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| CYP15G0401DXB CYV15G0401DXB Quad HOTLink II Transceiver Features Quad channel transceiver for 195 to 1500 MBaud serial signaling rate Aggregate throughput of 12 GBits/second Second-generation HOTLink(R) technology Compliant to multiple standards ESCON, DVB-ASI, Fibre Channel and Gigabit Ethernet (IEEE802.3z) CYV15G0401DXB also compliant to SMPTE 259M and SMPTE 292M 8B/10B encoded or 10-bit unencoded data Selectable parity check/generate Selectable multi-channel bonding options Four 8-bit channels Two 16-bit channels One 32-bit channel N x 32-bit channel support (inter-chip) Skew alignment support for multiple bytes of offset Selectable input/output clocking options MultiFrame Receive Framer Bit and Byte alignment Comma or full K28.5 detect Single- or multi-byte framer for byte alignment Low-latency option Synchronous LVTTL parallel interface Optional Elasticity Buffer in Receive Path Optional Phase Align Buffer in Transmit Path Internal phase-locked loops (PLLs) with no external PLL components 10 10 10 System Host 10 10 10 10 10 Dual differential PECL-compatible serial inputs per channel Internal DC-restoration Dual differential PECL-compatible serial outputs per channel Source matched for 50 transmission lines No external bias resistors required Signaling-rate controlled edge-rates Compatible with fiber-optic modules copper cables circuit board traces JTAG boundary scan Built-In Self-Test (BIST) for at-speed link testing Per-channel Link Quality Indicator Analog signal detect Digital signal detect Low power 2.5W @ 3.3V typical Single 3.3V supply 256-ball thermally enhanced BGA 0.25 BiCMOS technology Functional Description The CYP(V)15G0401DXB[1] Quad HOTLink II Transceiver is a point-to-point or point-to-multipoint communications building block allowing the transfer of data over high-speed serial links (optical fiber, balanced, and unbalanced copper transmission lines) at signaling speeds ranging from 195-to-1500 MBaud per serial link. 10 Serial Links 10 10 System Host 10 10 10 10 10 CYP15G0401DXB Serial Links Serial Links Serial Links Backplane or Cabled Connections Note: 1. CYV15G0401DXB refers to SMPTE 259M and SMPTE 292M compliant devices. CYP15G0401DXB refers to devices not compliant to SMPTE 259M and SMPTE 292M pathological test requirements. CYP(V)15G0401DXB refers to both devices. Figure 1. HOTLink II System Connections Cypress Semiconductor Corporation Document #: 38-02002 Rev. *K 3901 North First Street San Jose, CA 95134 408-943-2600 Revised March 16, 2004 CYP15G0401DXB CYP15G0401DXB CYV15G0401DXB The CYV15G0401DXB satisfies the SMPTE 259M and SMPTE 292M compliance as per the EG34-1999 Pathological Test Requirements. The multiple channels in each device may be combined to allow transport of wide buses across significant distances with minimal concern for offsets in clock phase or link delay. Each transmit channel accepts parallel characters in an Input Register, encodes each character for transport, and converts it to serial data. Each receive channel accepts serial data and converts it to parallel data, decodes the data into characters, and presents these characters to an Output Register. Figure 1 illustrates typical connections between independent host systems and corresponding CYP15G0401DXB parts. As a second-generation HOTLink device, the CYP(V)15G0401DXB extends the HOTLink family with enhanced levels of integration and faster data rates, while maintaining serial-link compatibility (data, command, and BIST) with other HOTLink devices. The transmit (TX) section of the CYP(V)15G0401DXB Quad HOTLink II consists of four byte-wide channels that can be operated independently or bonded to form wider buses. Each channel can accept either eight-bit data characters or pre-encoded 10-bit transmission characters. Data characters are passed from the Transmit Input Register to an embedded 8B/10B Encoder to improve their serial transmission characteristics. These encoded characters are then serialized and output from dual Positive ECL (PECL)-compatible differential transmission-line drivers at a bit-rate of either 10- or 20-times the input reference clock. The receive (RX) section of the CYP(V)15G0401DXB Quad HOTLink II consists of four byte-wide channels that can be operated independently or synchronously bonded for greater bandwidth. Each channel accepts a serial bit-stream from one of two PECL-compatible differential line receivers and, using a completely integrated PLL Clock Synchronizer, recovers the timing information necessary for data reconstruction. Each recovered serial stream is deserialized and framed into characters, 8B/10B decoded, and checked for transmission errors. Recovered decoded characters are then written to an internal Elasticity Buffer, and presented to the destination host system. The integrated 8B/10B Encoder/Decoder may be bypassed for systems that present externally encoded or scrambled data at the parallel interface. For those systems using buses wider than a single byte, the four independent receive paths can be bonded together to allow synchronous delivery of data across a two-byte-wide (16-bit) path, or across all four bytes (32-bit). Multiple CYP(V)15G0401DXB devices may be bonded together to provide synchronous transport of buses wider than 32 bits. The parallel I/O interface may be configured for numerous forms of clocking to provide the highest flexibility in system architecture. In addition to clocking the transmit path, the receive interface may be configured to present data relative to a recovered clock or to a local reference clock. Each transmit and receive channel contains an independent BIST pattern generator and checker. This BIST hardware allows at-speed testing of the high-speed serial data paths in each transmit and receive section, and across the interconnecting links. HOTLink II devices are ideal for a variety of applications where parallel interfaces can be replaced with high-speed, point-to-point serial links. Some applications include interconnecting backplanes on switches, routers, servers and video transmission systems. The CYV15G0401DXB is verified by testing to be compliant to all the pathological test patterns documented in SMPTE EG34-1999, for both the SMPTE 259M and 292M signaling rates. The tests ensure that the receiver recovers data with no errors for the following patterns: 1. Repetitions of 20 ones and 20 zeros. 2. Single burst of 44 ones or 44 zeros. 3. Repetitions of 19 ones followed by 1 zero or 19 zeros followed by 1 one. Document #: 38-02002 Rev. *K Page 2 of 53 CYP15G0401DXB CYV15G0401DXB CYP(V)15G0401DXB Transceiver Logic Block Diagram x10 x11 x10 x11 x10 x11 x10 x11 Phase Align Buffer Encoder 8B/10B Elasticity Buffer Decoder 8B/10B Framer Phase Align Buffer Encoder 8B/10B Elasticity Buffer Decoder 8B/10B Framer Phase Align Buffer Encoder 8B/10B Elasticity Buffer Decoder 8B/10B Framer Phase Align Buffer Encoder 8B/10B Elasticity Buffer Decoder 8B/10B Framer Serializer Deserializer Serializer Deserializer Serializer Deserializer Serializer Deserializer TX RX TX RX TX RX TX RX Document #: 38-02002 Rev. *K Page 3 of 53 CYP15G0401DXB CYV15G0401DXB Transmit Path Block Diagram REFCLK+ REFCLK TXRATE SPDSEL TXCLKO+ TXCLKO TXMODE[1:0] TXCKSEL TXPERA SCSEL Input Register TXDA[7:0] TXOPA TXCTA[1:0] 2 8 2 Character-Rate Clock Transmit Mode BIST Enable Latch 4 Output Enable Latch 8 Shifter Parity Check 12 12 BIST LFSR 8B/10B 10 OUTA1+ OUTA1 OUTA2+ OUTA2 TXLBA Transmit PLL Clock Multiplier Character-Rate Clock Bit-rate Clock BISTLE BOE[7:0] RBIST[D:A] OELE = Internal Signal 12 HML TXCLKA TXPERB Phase-align Buffer BIST LFSR 8B/10B Input Register Shifter Parity Check TXDB[7:0] TXOPB TXCTB[1:0] 8 2 11 11 12 10 OUTB1+ OUTB1 OUTB2+ OUTB2 TXLBB HML TXCLKB TXPERC Phase-align Buffer Input Register Shifter Parity Check TXDC[7:0] TXOPC TXCTC[1:0] 8 2 11 11 12 BIST LFSR 8B/10B 10 OUTC1+ OUTC1 OUTC2+ OUTC2 TXLBC HML TXCLKC TXPERD Phase-align Buffer BIST LFSR 8B/10B Input Register Shifter Parity Check TXDD[7:0] TXOPD TXCTD[1:0] 8 11 11 12 10 OUTD1+ OUTD1 OUTD2+ OUTD2 TXLBD HML TXCLKD TXRST PARCTL Document #: 38-02002 Rev. *K Parity Control Page 4 of 53 Phase-align Buffer CYP15G0401DXB CYV15G0401DXB Receive Path Block Diagram RXLE BOE[7:0] RX PLL Enable Latch = Internal Signal TRSTZ JTAG Boundary Scan Controller TMS TCLK TDI TDO LFIA Elasticity Buffer 10B/8B BIST Framer Output Register Shifter 8 3 RXDA[7:0] RXOPA RXSTA[2:0] RXCLKA+ RXCLKA LFIB Elasticity Buffer 10B/8B BIST Framer Shifter Output Register 8 3 RXDB[7:0] RXOPB RXSTB[2:0] RXCLKB+ RXCLKB LFIC Elasticity Buffer 10B/8B BIST Framer Output Register Shifter 8 3 RXDC[7:0] RXOPC RXSTC[2:0] RXCLKC+ RXCLKC LFID Elasticity Buffer 10B/8B BIST Output Register Framer Shifter 8 3 RXDD[7:0] RXOPD RXSTD[2:0] RXCLKD+ RXCLKD 2 Bonding Control Parity Control Character-Rate Clock Receive Signal Monitor Clock & Data Recovery PLL SDASEL LPEN INSELA INA1+ INA1 INA2+ INA2 TXLBA Clock Select 2 INSELB INB1+ INB1 INB2+ INB2 TXLBB Receive Signal Monitor Clock & Data Recovery PLL Clock Select 2 INSELC INC1+ INC1 INC2+ INC2 TXLBC Receive Signal Monitor Clock & Data Recovery PLL Clock Select 2 INSELD IND1+ IND1 IND2+ IND2 TXLBD RBIST[D:A] FRAMCHAR RXRATE RFEN RFMODE RXCKSEL DECMODE RXMODE[1:0] Receive Signal Monitor Clock & Data Recovery PLL Clock Select 2 2 BONDST BOND_ALL BOND_INH MASTER Page 5 of 53 Document #: 38-02002 Rev. *K CYP15G0401DXB CYV15G0401DXB Pin Configuration (Top View)[2] 1 A B C D E F G H J K L M N P R T U V W Y INC1- 2 OUT C1OUT C1+ TMS 3 INC2- 4 OUT C2OUT C2+ 5 VCC 6 IND1- 7 OUT D1OUT D1+ SDA SEL SPD SEL 8 GND 9 IND2- 10 OUT D2OUT D2+ 11 INA1- 12 OUT A1OUT A1+ 13 GND 14 INA2- 15 OUT A2OUT A2+ RX MODE [0] RX MODE [1] 16 VCC 17 INB1- 18 OUT B1OUT B1+ RX RATE RXLE 19 INB2- 20 OUT B2OUT B2+ TDO INC1+ INC2+ VCC IND1+ GND IND2+ INA1+ GND INA2+ VCC INB1+ INB2+ TDI INSELC INSELB VCC PAR CTL RF MODE GND BOE[7] BOE[5] BOE[3] BOE[1] GND TX MODE [0] TX MODE [1] VCC TX RATE BOND INH VCC LPEN TCLK TRSTZ INSELD INSELA VCC GND BOE[6] BOE[4] BOE[2] BOE[0] GND VCC RFEN MAS TER VCC VCC VCC VCC VCC VCC VCC TXPER C TXDC [7] GND TXOP C TXCK SEL GND TXDC [0] TXDC [4] GND RXCK SEL TXDC [1] GND BISTLE RXSTB RXOPB RXSTB [1] [0] DEC MODE GND OELE FRAM CHAR GND RXDB [1] GND GND TXCTC [1] RXDC [2] RXDC [3] RXDC [4] GND TXDC [5] TXDC [2] TXDC [3] LFIC RXSTB [2] RXDB [3] RXDB [6] RXDB [0] RXDB [4] LFIB RXDB [5] RXDB [7] RXCLK B TXDB [7] GND RXDB [2] RXCLK B+ TXDB [6] TXCLK B GND RXCLK TXCTC C [0] RXCLK TXCLK C+ C RXDC [5] GND RXDC [7] GND TXDC [6] RXDC [6] GND TXCTB TXCTB [1] [0] GND GND RXDC [1] RXDC [0] RXSTC RXSTC [0] [1] TXOP D VCC TXDB [5] TXDB [1] VCC TXDB [4] TXDB [0] VCC TXDB [3] TXOP B VCC TXDB [2] TXPER B VCC RXSTC RXOP TXPER [2] C D VCC VCC VCC TXDD [0] TXDD [3] TXDD [5] TXDD [6] TXDD [1] TXDD [4] TXDD [7] TXCLK D TXDD [2] TXCTD [1] VCC RXDD [2] RXDD [3] RXDD [4] RXDD [5] RXDD [1] RXSTD [0] RXSTD [1] RXDD [0] GND RX OPD BOND _ALL REF CLKREF CLK+ TXDA [1] BOND ST[1] GND TXDA [4] TXDA [3] TXDA [2] TXDA [0] TXCTA [0] TXDA [7] TXDA [6] TXDA [5] VCC RXDA RXOPA RXSTA RXSTA [2] [2] [1] RXDA [7] LFIA RXDA [3] RXCLK ARXDA [0] RXDA [4] RXDA [6] RXSTA [0] RXDA [1] RXDA[ 5] TXCTD RXDD [0] [6] LFID RXCLK D RXCLK D+ VCC GND RXSTD BOND [2] ST[0] GND VCC VCC GND TXCLK TXRST TXOPA SCSEL OTXCLK O+ N/C TXCLK TXPER A A GND VCC RXDD [7] VCC GND GND VCC TXCTA RXCLK [1] A+ Note: 2. N/C = Do Not Connect Document #: 38-02002 Rev. *K Page 6 of 53 CYP15G0401DXB CYV15G0401DXB Pin Configuration (Bottom View)[3] 20 OUT B2OUT B2+ TDO 19 INB2- 18 OUT B1OUT B1+ RX RATE RXLE 17 INB1- 16 VCC 15 OUT A2OUT A2+ RX MODE [0] RX MODE [1] 14 INA2- 13 GND 12 OUT A1OUT A1+ 11 INA1- 10 OUT D2OUT D2+ 9 IND2- 8 GND 7 OUT D1OUT D1+ SDA SEL SPD SEL 6 IND1- 5 VCC 4 OUT C2OUT C2+ 3 INC2- 2 OUT C1OUT C1+ TMS 1 INC1- A B C D E F G H J K L M N P R T U V W Y INB2+ INB1+ VCC INA2+ GND INA1+ IND2+ GND IND1+ VCC INC2+ INC1+ LPEN TX RATE BOND INH VCC VCC TX MODE [0] TX MODE [1] GND BOE[1] BOE[3] BOE[5] BOE[7] GND PAR CTL RF MODE VCC INSELB INSELC TDI MAS TER VCC RFEN VCC GND BOE[0] BOE[2] BOE[4] BOE[6] GND VCC INSELA INSELD TRSTZ TCLK VCC VCC VCC VCC VCC VCC RXSTB [0] RXDB [1] GND RXOP B FRAM CHAR GND RXSTB BISTLE [1] OELE DEC MODE GND RXCK SEL TXDC [1] GND TXDC [0] TXDC [4] GND TXOP C TXCK SEL GND TXPER C TXDC [7] GND GND RXDB [2] RXCLK B+ TXDB [6] TXCLK B GND RXDB [5] RXDB [7] RXCLK BTXDB [7] GND RXDB [0] RXDB [4] LFIB RXSTB [2] RXDB [3] RXDB [6] TXDC [3] LFIC TXDC [2] TXDC [5] TXCTC [1] TXCTC RXCLK RXDC [0] C[2] TXCLK RXCLK C C+ RXDC [7] GND RXDC [5] GND RXDC [3] RXDC [4] GND TXDC [6] RXDC [6] GND TXCTB TXCTB [0] [1] GND GND TXDB [2] TXPER B VCC TXDB [3] TXOP B VCC TXDB [4] TXDB [0] VCC TXDB [5] TXDB [1] VCC RXSTC RXSTC RXDC [1] [0] [0] TXOP D VCC RXDC [1] TXPER RXOP RXSTC D C [2] VCC VCC VCC RXSTA RXSTA RXOPA RXDA [1] [2] [2] RXSTA [0] RXDA [1] RXDA [5] RXDA [0] RXDA [4] RXDA [6] RXDA [3] RXCLK ARXDA [7] LFIA VCC TXCTA [0] TXDA [7] TXDA [6] TXDA [5] TXDA [4] TXDA [3] TXDA [2] TXDA [0] GND TXDA [1] BOND ST[1] SCSEL REF CLKREF CLK+ TXOP A BOND _ALL BOND ST[0] TXRST RXOP D RXSTD [2] TXCLK OTXCLK O+ GND RXDD [1] RXSTD [0] RXSTD [1] RXDD [0] RXDD [2] RXDD [3] RXDD [4] RXDD [5] VCC TXCTD [1] RXDD [6] RXCLK D RXCLK D+ TXDD [2] TXCTD [0] LFID TXDD [1] TXDD [4] TXDD [7] TXCLK D TXDD [0] TXDD [3] TXDD [5] TXDD [6] VCC GND GND VCC VCC GND GND VCC RXCLK TXCTA A+ [1] VCC GND TXPER TXCLK A A N/C GND VCC RXDD [7] Note: 3. N/C = Do Not Connect Document #: 38-02002 Rev. *K Page 7 of 53 CYP15G0401DXB CYV15G0401DXB Pin Descriptions CYP(V)15G0401DXB Quad HOTLink II Transceiver Pin Name TXPERA TXPERB TXPERC TXPERD I/O Characteristics LVTTL Output, changes relative to REFCLK [4] Signal Description Transmit Path Parity Error. Active HIGH. Asserted (HIGH) if parity checking is enabled and a parity error is detected at the Encoder. This output is HIGH for one transmit character clock period to indicate detection of a parity error in the character presented to the Encoder. If a parity error is detected, the character in error is replaced with a C0.7 character to force a corresponding bad-character detection at the remote end of the link. This replacement takes place regardless of the encoded/non-encoded state of the interface. When BIST is enabled for the specific transmit channel, BIST progress is presented on these outputs. Once every 511 character times (plus a 16-character Word Sync Sequence when the receive channels are clocked by a common clock, i.e., RXCKSEL = LOW or HIGH), the associated TXPERx signal will pulse HIGH for one transmit-character clock period (if RXCKSEL= MID) or seventeen transmit- character clock periods (if RXCKSEL = LOW or HIGH and Encoder is enabled) to indicate a complete pass through the BIST sequence. Therefore, in this case TXPERx signal will pulse HIGH for one transmit-character clock period. These outputs also provide indication of a transmit Phase-align Buffer underflow or overflow. When the transmit Phase-align Buffers are enabled (TXCKSEL LOW, or TXCKSEL = LOW and TXRATE = HIGH), if an underflow or overflow condition is detected, TXPERx for the channel in error is asserted and remains asserted until either an atomic Word Sync Sequence is transmitted or TXRST is sampled LOW to re-center the transmit Phase-align Buffers. TXCTA[1:0] TXCTB[1:0] TXCTC[1:0] TXCTD[1:0] LVTTL Input, synchronous, sampled by the selected TXCLKx or REFCLK [4] LVTTL Input, synchronous, sampled by the selected TXCLKx or REFCLK [4] LVTTL Input, synchronous, internal pull-up, sampled by the respective TXCLKx or REFCLK [4] LVTTL Input, synchronous, internal pull-down, sampled by TXCLKA or REFCLK [4] Transmit Control. These inputs are captured on the rising edge of the transmit interface clock as selected by TXCKSEL, and are passed to the Encoder or Transmit Shifter. They identify how the associated TXDx[7:0] characters are interpreted. When the Encoder is bypassed, these inputs are interpreted as data bits of 10-bit input character. When the Encoder is enabled, these inputs determine if the TXDx[7:0] character is encoded as Data, a Special Character code, a K28.5 fill character or a Word Sync Sequence. See Table 1 for details. Transmit Data Inputs. These inputs are captured on the rising edge of the transmit interface clock as selected by TXCKSEL and passed to the Encoder or Transmit Shifter. When the Encoder is enabled (TXMODE[1:0] LOW), TXDx[7:0] specify the specific data or command character to be sent. When the Encoder is bypassed, these inputs are interpreted as data bits of the 10-bit input character. See Table 1 for details. Transmit Path Odd Parity. When parity checking is enabled (PARCTL LOW), the parity captured at these inputs is XORed with the data on the associated TXDx bus (and sometimes TXCT[1:0]) to verify the integrity of the captured character. See Table 2 for details. Special Character Select. Used in some transmit modes along with TXCTx[1:0] to encode special characters or to initiate a Word Sync Sequence. When the transmit paths are configured for independent input clocks (TXCKSEL = MID), SCSEL is captured relative to TXCLKA . Transmit Path Data Signals TXDA[7:0] TXDB[7:0] TXDC[7:0] TXDD[7:0] TXOPA TXOPB TXOPC TXOPD SCSEL Note: 4. When REFCLK is configured for half-rate operation (TXRATE = HIGH), these inputs are sampled (or the outputs change) relative to both the rising and falling edges of REFCLK. Document #: 38-02002 Rev. *K Page 8 of 53 CYP15G0401DXB CYV15G0401DXB Pin Descriptions (continued) CYP(V)15G0401DXB Quad HOTLink II Transceiver Pin Name TXRST I/O Characteristics LVTTL Input, asynchronous, internal pull-up, sampled by REFCLK [4] Signal Description Transmit Clock Phase Reset. Active LOW. When sampled LOW, the transmit Phase-align Buffers are allowed to adjust their data-transfer timing (relative to the selected input clock) to allow clean transfer of data from the Input Register to the Encoder or Transmit Shifter. When TXRST is sampled HIGH, the internal phase relationship between the associated TXCLKx and the internal character-rate clock is fixed and the device operates normally. When configured for half-rate REFCLK sampling of the transmit character stream (TXCKSEL = LOW and TXRATE = HIGH), assertion of TXRST is only used to clear Phase-align buffer faults caused by highly asymmetric REFCLK periods or REFCLKs with excessive cycle-to-cycle jitter. During this alignment period, one or more characters may be added to or lost from all the associated transmit paths as the transmit Phase-align Buffers are adjusted. TXRST must be sampled LOW by a minimum of two consecutive rising edges REFCLK to ensure the reset operation is initiated correctly on all channels. This input is ignored when both TXCKSEL and TXRATE are LOW, since the phase align buffer is bypassed. In all other configurations, TXRST should be asserted during device initialization to ensure proper operation of the Phase-align buffer. TXRST should be asserted after the presence of a valid TXCLKx and after allowing enough time for the TXPLL to lock to the reference clock (as specified by parameter tTXLOCK). [5] Transmit Path Clock and Clock Control TXCKSEL Three-level Select static control input , Transmit Clock Select. Selects the clock source, used to write data into the transmit Input Register of the transmit channel(s). When LOW, REFCLK [4] is used as the Input Register clock for TXDx[7:0] and TXCTx[1:0] of all channels. When MID, TXCLKx is used as the Input Register clock for TXDx[7:0] and TXCTx[1:0]. When HIGH, TXCLKA is used as the Input Register clock for TXDx[7:0] and TXCTx[1:0] of all channels. Transmit Clock Output. This true and complement output clock is synthesized by the transmit PLL and is synchronous to the internal transmit character clock. It has the same frequency as REFCLK (when TXRATE = LOW), or twice the frequency of REFCLK (when TXRATE = HIGH). This output clock has no direct phase relationship to REFCLK. Transmit PLL Clock Rate Select. When TXRATE = HIGH, the Transmit PLL multiplies REFCLK by 20 to generate the serial bit-rate clock. When TXRATE = LOW, the transmit PLL multiples REFCLK by 10 to generate the serial bit-rate clock. See Table 11 for a list of operating serial rates. When REFCLK is selected to clock the receive parallel interfaces (RXCKSEL = LOW), the TXRATE input also determines if the clocks on the RXCLKA and RXCLKC outputs are full or half-rate. When TXRATE = HIGH (REFCLK is half-rate), the RXCLKA and RXCLKC output clocks are also half-rate clocks and follow the frequency and duty cycle of the REFCLK input. When TXRATE = LOW (REFCLK is full-rate), the RXCLKA and RXCLKC output clocks are full-rate clocks and follow the frequency and duty cycle of the REFCLK input. When TXCKSEL = MID or HIGH (TXCLKx or TXCLKA selected to clock input register), configuring TXRATE = HIGH (Half-rate REFCLK) is an invalid mode of operation. TXCLKA TXCLKB TXCLKC TXCLKD LVTTL Clock Input, internal pull-down Transmit Path Input Clocks. These clocks must be frequency-coherent to TXCLKO , but may be offset in phase. The internal operating phase of each input clock (relative to REFLCK or TXCLKO ) is adjusted when TXRST = LOW and locked when TXRST = HIGH. TXCLKO LVTTL Output TXRATE LVTTL Input, static control input, internal pull-down Note: 5. Three-level select inputs are used for static configuration. They are ternary (not binary) inputs that make use of non-standard logic levels of LOW, MID, and HIGH. The LOW level is usually implemented by direct connection to VSS (ground). The HIGH level is usually implemented by direct connection to VCC. When not connected or allowed to float, a Three-level select input will self-bias to the MID level. Document #: 38-02002 Rev. *K Page 9 of 53 CYP15G0401DXB CYV15G0401DXB Pin Descriptions (continued) CYP(V)15G0401DXB Quad HOTLink II Transceiver Pin Name I/O Characteristics Signal Description Transmit Operating Mode. These inputs are interpreted to select one of nine operating modes of the transmit path. See Table 3 for a list of operating modes. Parallel Data Output. These outputs change following the rising edge of the selected receive interface clock. When the Decoder is enabled (DECMODE = HIGH or MID), these outputs represent either received data or special characters. The status of the received data is represented by the values of RXSTx[2:0]. When the Decoder is bypassed (DECMODE = LOW), RXDx[7:0] become the higher order bits of the 10-bit received character. See Table 18 for details. RXSTA[2:0] RXSTB[2:0] RXSTC[2:0] RXSTD[2:0] LVTTL Output, synchronous to the selected RXCLKx output (or REFCLK input[4] when RXCKSEL = LOW) Parallel Status Output. These outputs change following the rising edge of the selected receive interface clock. When the Decoder is bypassed (DECMODE = LOW), RXSTx[1:0] become the two low-order bits of the 10-bit received character, while RXSTx[2] = HIGH indicates the presence of a Comma character in the Output Register. See Table 18 for details. When the Decoder is enabled (DECMODE = HIGH or MID), RXSTx[2:0] provide status of the received signal. See Table 20, 21 and 22 for a list of Receive Character status. RXOPA RXOPB RXOPC RXOPD three-state, LVTTL Output, synchronous to the selected RXCLKx output (or REFCLK input[4] when RXCKSEL = LOW) Receive Path Odd Parity. When parity generation is enabled (PARCTL LOW), the parity output at these pins is valid for the data on the associated RXDx bus bits. When parity generation is disabled (PARCTL = LOW) these output drivers are disabled (High-Z). Transmit Path Mode Control TXMODE[1:0] Three-level Select [5] static control inputs Receive Path Data Signals RXDA[7:0] RXDB[7:0] RXDC[7:0] RXDD[7:0] LVTTL Output, synchronous to the selected RXCLKx output (or REFCLK input[4] when RXCKSEL = LOW) Receive Path Clock and Clock Control RXRATE LVTTL Input, static control Receive Clock Rate Select. When LOW, the RXCLKx recovered clock outputs are input, internal pull-down complementary clocks operating at the recovered character rate. Data for the associated receive channels should be latched on the rising edge of RXCLKx+ or falling edge of RXCLKx. When HIGH, the RXCLKx recovered clock outputs are complementary clocks operating at half the character rate. Data for the associated receive channels should be latched alternately on the rising edge of RXCLKx+ and RXCLKx. When REFCLK is selected to clock the output registers (RXCKSELx = LOW), RXRATEx is not interpreted. The RXCLKA and RXCLKC output clocks will follow the frequency and duty cycle of REFCLK. FRAMCHAR Three-level Select [5], static control input Framing Character Select. Used to select the character or portion of a character used for character framing of the received data streams. When MID, the Framer looks for both positive and negative disparity versions of the eight-bit Comma character. When HIGH, the Framer looks for both positive and negative disparity versions of the K28.5 character. Configuring FRAMCHAR to LOW is reserved for component test. Reframe Enable for All Channels. Active HIGH. When HIGH, the framers in all four channels are enabled to frame per the presently enabled framing mode as selected by RFMODE and selected framing character as selected by FRAMCHAR. Receive Operating Mode. These inputs are interpreted to select one of nine operating modes of the receive path. See Table 14 for details. RFEN LVTTL Input, asynchronous, internal pull-down RXMODE[1:0] Three-level Select [5], static control inputs Document #: 38-02002 Rev. *K Page 10 of 53 CYP15G0401DXB CYV15G0401DXB Pin Descriptions (continued) CYP(V)15G0401DXB Quad HOTLink II Transceiver Pin Name RXCLKA RXCLKB RXCLKC RXCLKD I/O Characteristics Three-state, LVTTL Output clock or static control input Signal Description Receive Character Clock Output or Clock Select Input. When configured such that all output data paths are clocked by the recovered clock (RXCKSEL = MID), these true and complement clocks are the receive interface clocks which are used to control timing of output data (RXDx[7:0], RXSTx[2:0] and RXOPx). These clocks are output continuously at either the dual-character rate (1/20 th the serial bit-rate) or character rate (1/10th the serial bit-rate) of the data being received, as selected by RXRATE. When configured such that all output data paths are clocked by REFCLK instead of a recovered clock (RXCKSEL = LOW), the RXCLKA and RXCLKC output drivers present a buffered and delayed form of REFCLK. RXCLKA and RXCLKC are buffered forms of REFCLK that are slightly different in phase. This phase difference allows the user to select the optimal setup/hold timing for their specific interface. When RXCKSEL = LOW and quad channel bonding is enabled, RXCLKB+ and RXCLKD+ are static control inputs used to select the master channel for bonding and status control. When RXCKSEL = HIGH and quad-channel bonding is enabled, one of the recovered clocks from channels A, B, C or D can be selected to clock the bonded output data. The selection of the recovered clock is made by RXCLKB+ and RXCLKD+ which act as static control inputs in this mode. Both RXCLKA and RXCLKC output buffered forms of the recovered clock selected from receive channel A, B, C, or D. See Table 15 for details. When RXCKSEL = HIGH and dual-channel bonding is enabled, one of the recovered clocks from channels A or B is selected to present bonded data from channels A and B, and one of the recovered clocks from channels C or D is selected to present bonded data from channels C and D. RXCLKA output the recovered clock from either receive channel A or receive channel B as selected by RXCLKB+ to clock the bonded output data from channels A and B, and RXCLKC output the recovered clock from either receive channel C or receive channel D as selected by RXCLKD+ to the clock the bonded output data from channels C and D. See Table 16 for details. RXCKSEL Three-level Select [5], static control input Receive Clock Mode. Selects the receive clock source used to transfer data to the Output Registers. When LOW, all four Output Registers are clocked by REFCLK. RXCLKB and RXCLKD outputs are disabled (High-Z), and RXCLKA and RXCLKC present buffered and delayed forms of REFCLK. This clocking mode is required for channel bonding across multiple devices. When MID, each RXCLKx output follows the recovered clock for the respective channel, as selected by RXRATE. When the 10B/8B Decoder and Elasticity Buffer are bypassed (DECMODE = LOW), RXCKSEL must be MID. When HIGH and channel bonding is enabled in dual-channel mode (RX modes 3 and 5), RXCLKA outputs the recovered clock from either receive channel A or B as selected by RXCLKB+, and RXCLKC outputs the recovered clock from either receive channel C or D as selected by RXCLKD+. These output clocks may operate at the character-rate or half the character-rate as selected by RXRATE. When HIGH and channel bonding is enabled in quad channel mode (RX modes 6 and 8), or if the receive channels are operated in independent mode (RX modes 0 and 2), RXCLKA and RXCLKC output the recovered clock from receive channel A, B, C, or D, as selected by RXCLKB+ and RXCLKD+. This output clock may operate at the character-rate or half the character-rate as selected by RXRATE. Document #: 38-02002 Rev. *K Page 11 of 53 CYP15G0401DXB CYV15G0401DXB Pin Descriptions (continued) CYP(V)15G0401DXB Quad HOTLink II Transceiver Pin Name DECMODE Three-level Select [5], static control input I/O Characteristics Signal Description Decoder Mode Select. This input selects the behavior of the Decoder block. When LOW, the Decoder is bypassed and raw 10-bit characters are passed to the Output Register. When the Decoder is bypassed, RXCKSEL must be MID. When MID, the Decoder is enabled and the Cypress decoder table for Special Code characters is used. When HIGH, the Decoder is enabled and the alternate decoder table for Special Code characters is used. See Table 27 for a list of the Special Codes supported in both encoded modes. RFMODE Three-level Select [5], static control input Reframe Mode Select. Used to select the type of character framing used to adjust the character boundaries (based on detection of one or more framing characters in the received serial bit stream). This signal operates in conjunction with the presently enabled channel bonding mode, and the type of framing character selected. When LOW, the Low-Latency Framer is selected. This will frame on each occurrence of the selected framing character(s) in the received data stream. This mode of framing stretches the recovered character-rate clock for one or multiple cycles to align that clock with the recovered data. When MID, the Cypress-mode Multi-Byte parallel Framer is selected. This requires a pair of the selected framing character(s), on identical 10-bit boundaries, within a span of 50 bits, before the character boundaries are adjusted. The recovered character clock remains in the same phase regardless of character offset. When HIGH, the alternate mode Multi-Byte parallel Framer is selected. This requires detection of the selected framing character(s) of the allowed disparities in the received serial bit stream, on identical 10-bit boundaries, on four directly adjacent characters. The recovered character clock remains in the same phase regardless of character offset. Device Control Signals PARCTL Three-level Select [5], static control input Parity Check/Generate Control. Used to control the different parity check and generate functions. When LOW, parity checking is disabled, and the RXOPx outputs are all disabled (High-Z). When MID, and the 8B/10B Encoder and Decoder are enabled (TXMODE[1] LOW, DECMODE LOW), TXDx[7:0] inputs are checked (along with TXOPx) for valid ODD parity, and ODD parity is generated for the RXDx[7:0] outputs and presented on RXOPx. When the Encoder and Decoder are disabled (TXMODE[1] LOW, DECMODE LOW), theTXDx[7:0] and TXCTx[1:0] inputs are checked (along with TXOPx) for valid ODD parity, and ODD parity is generated for the RXDx[7:0] and RXSTx[1:0] outputs and presented on RXOPx. When HIGH, parity checking and generation are enabled. The TXDx[7:0] and TXCTx[1:0] inputs are checked (along with TXOPx) for valid ODD parity, and ODD parity is generated for the RXDx[7:0] and RXSTx[2:0] outputs and presented on RXOPx. See Table 2 and 19 for details. Serial Rate Select. This input specifies the operating bit-rate range of both transmit and receive PLLs. LOW = 195400 MBd, MID = 400800 MBd, HIGH = 8001500 MBd. When SPDSEL is LOW, setting TXRATE = HIGH (Half-rate Reference Clock) is invalid. Device Reset. Active LOW. Initializes all state machines and counters in the device. When sampled LOW by the rising edge of REFCLK , this input resets the internal state machines and sets the Elasticity Buffer pointers to a nominal offset. When the reset is removed (TRSTZ sampled HIGH by REFCLK ), the status and data outputs will become deterministic in less than 16 REFCLK cycles. The BISTLE, OELE, and RXLE latches are reset by TRSTZ. If the Elasticity Buffer or the Phase-align Buffer are used, TRSTZ should be applied after power up to initialize the internal pointers into these memory arrays. SPDSEL Three-level Select [5] static control input LVTTL Input, internal pull-up TRSTZ Document #: 38-02002 Rev. *K Page 12 of 53 CYP15G0401DXB CYV15G0401DXB Pin Descriptions (continued) CYP(V)15G0401DXB Quad HOTLink II Transceiver Pin Name REFCLK I/O Characteristics Differential LVPECL or single-ended LVTTL Input Clock Signal Description Reference Clock. This clock input is used as the timing reference for the transmit PLL. It is also used as the centering frequency of the Range Controller block of the Receive CDR PLLs.This input clock may also be selected to clock the transmit and receive parallel interfaces. When driven by a single-ended LVCMOS or LVTTL clock source, connect the clock source to either the true or complement REFCLK input, and leave the alternate REFCLK input open (floating). When driven by an LVPECL clock source, the clock must be a differential clock, using both inputs. When TXCKSEL = LOW, REFCLK is also used as the clock for the parallel transmit data (input) interface. When RXCKSEL = LOW, the Elasticity Buffer is enabled and REFCLK is used as the clock for the parallel receive data (output) interface. If the Elasticity Buffer is used, framing characters will be inserted or deleted to/from the data stream to compensate for frequency differences between the reference clock and recovered clock. When an addition happens, a K28.5 will be appended immediately after a framing is detected in the Elasticity Buffer. When deletion happens, a framing character will be removed from the data stream when detected in the Elasticity Buffer. Analog I/O and Control OUTA1 OUTB1 OUTC1 OUTD1 OUTA2 OUTB2 OUTC2 OUTD2 INA1 INB1 INC1 IND1 INA2 INB2 INC2 IND2 INSELA INSELB INSELC INSELD SDASEL LPEN CML Differential Output CML Differential Output Primary Differential Serial Data Outputs. These PECL-compatible CML outputs (+3.3V referenced) are capable of driving terminated transmission lines or standard fiber-optic transmitter modules. Secondary Differential Serial Data Outputs. These PECL-compatible CML outputs (+3.3V referenced) are capable of driving terminated transmission lines or standard fiber-optic transmitter modules. LVPECL Differential Input Primary Differential Serial Data Inputs. These inputs accept the serial data stream for deserialization and decoding. The INx1 serial streams are passed to the receiver Clock and Data Recovery (CDR) circuits to extract the data content when INSELx = HIGH. LVPECL Differential Input Secondary Differential Serial Data Inputs. These inputs accept the serial data stream for deserialization and decoding. The INx2 serial streams are passed to the receiver Clock and Data Recovery (CDR) circuits to extract the data content when INSELx = LOW. LVTTL Input, asynchronous Three-level Select [5] static configuration input LVTTL Input, asynchronous, internal pull-down LVTTL Input, asynchronous, internal pull-up Receive Input Selector. Determines which external serial bit stream is passed to the receiver Clock and Data Recovery circuit. When HIGH, the INx1 input is selected. When LOW, the INx2 input is selected. Signal Detect Amplitude Level Select. Allows selection of one of three predefined amplitude trip points for a valid signal indication, as listed in Table 12. All-Port Loop-Back Enable. Active HIGH. When asserted (HIGH), the transmit serial data from each channel is internally routed to the associated receiver Clock and Data Recovery (CAR) circuit. All enabled serial drivers are forced to differential logic 1. All serial data inputs are ignored. Serial Driver Output Enable Latch Enable. Active HIGH. When OELE = HIGH, the signals on the BOE[7:0] inputs directly control the OUTxy differential drivers. When the BOE[x] input is HIGH, the associated OUTxy differential driver is enabled. When the BOE[x] input is LOW, the associated OUTxy differential driver is powered down. The specific mapping of BOE[7:0] signals to transmit output enables is listed in Table 10. When OELE returns LOW, the last values present on BOE[7:0] are captured in the internal Output Enable Latch. If the device is reset (TRSTZ is sampled LOW), the latch is reset to disable all outputs. OELE Document #: 38-02002 Rev. *K Page 13 of 53 CYP15G0401DXB CYV15G0401DXB Pin Descriptions (continued) CYP(V)15G0401DXB Quad HOTLink II Transceiver Pin Name BISTLE I/O Characteristics LVTTL Input, asynchronous, internal pull-up Signal Description Transmit and Receive BIST Latch Enable. Active HIGH. When BISTLE = HIGH, the signals on the BOE[7:0] inputs directly control the transmit and receive BIST enables. When the BOE[x] input is LOW, the associated transmit or receive channel is configured to generate or compare the BIST sequence respectively. When the BOE[x] input is HIGH, the associated transmit or receive channel is configured for normal data transmission or reception. The specific mapping of BOE[7:0] signals to transmit and receive BIST enables is listed in Table 10. When BISTLE returns LOW, the last values present on BOE[7:0] are captured in the internal BIST Enable Latch. When the latch is closed, if the device is reset (TRSTZ is sampled LOW), the latch is reset to disable BIST on all transmit and receive channels. Receive Channel Power-control Latch Enable. Active HIGH. When RXLE = HIGH, the signals on the BOE[7:0] inputs directly control the power enables for the receive PLLs and analog circuitry. When the BOE[7:0] input is HIGH, the associated receive channel A through D PLL and analog circuitry are active. When the BOE[7:0] input is LOW, the associated receive channel A through D PLL and analog circuitry are powered down. The specific mapping of BOE[7:0] signals to the associated receive channel enables is listed in Table 10. When RXLE returns LOW, the last values present on BOE[7:0] are captured in the internal RX PLL Enable Latch. When the device is reset (TRSTZ = LOW), the latch is reset to disable all receive channels. BIST, Serial Output, and Receive Channel Enables. These inputs are passed to and through the Output Enable Latch when OELE is HIGH, and captured in this latch when OELE returns LOW. These inputs are passed to and through the BIST Enable Latch when BISTLE is HIGH, and captured in this latch when BISTLE returns LOW. These inputs are passed to and through the Receive Channel Enable Latch when RXLE is HIGH, and captured in this latch when RXLE returns LOW. Link Fault Indication Output. Active LOW. LFIx is the logical OR of four internal conditions: 1. Received serial data frequency outside expected range 2. Analog amplitude below expected levels 3. Transition density lower than expected 4. Receive Channel disabled. Bonding Control BONDST[1:0] Bidirectional Open Drain, Bonding Status. These signals are only used when multiple devices are bonded internal pull-up together. They communicate the status of Elasticity Buffer management events from master device of the bonding domain to the slave devices of the same bonding domain. These outputs change at the same character rate as the receive output data buses, but are connected only to all the slave CYP(V)15G0401DXB devices. When MASTER = LOW, these are output signals and present the Elasticity Buffer status from the selected master receive channel of the device configured as the master. Receive master channel selection is performed using the RXCLKB+ and RXCLKD+ inputs. The BONDST[1:0] Outputs of the master device must be connected to BONDST[1:0] Inputs of all the slave devices in the bonding domain. These status outputs indicate one of four possible conditions, on a synchronous basis, to the slave devices. These conditions are: 00Reserved 01Add one K28.5 immediately following the next framing character received 10Delete next framing character received 11Normal data. These outputs are driven only when the device is configured as a master, all four channels are bonded together, and the receive parallel interface is clocked by REFCLK . RXLE LVTTL Input, asynchronous, internal pull-up BOE[7:0] LVTTL Input, asynchronous, internal pull-up LFIA LFIB LFIC LFID LVTTL Output, Asynchronous Document #: 38-02002 Rev. *K Page 14 of 53 CYP15G0401DXB CYV15G0401DXB Pin Descriptions (continued) CYP(V)15G0401DXB Quad HOTLink II Transceiver Pin Name MASTER I/O Characteristics Signal Description LVTTL Input, Master Device Select. When LOW, the present device is configured as the master, static configuration input, and BONDST[1:0] outputs are driven. When HIGH, the present device is configured internal pull-down as a slave, and BONDST[1:0] are inputs. MASTER is only interpreted when configured for quad channel bonding, and the receive parallel interface is clocked by REFCLK . Bidirectional Open Drain, All Channels Bonded Indicator. Active HIGH, wired AND. BOND_ALL pins from all Internal pull-up CYP(V)15G0401DXB devices in the same bonding domain must be wired together. After bonding resolution is completed and when HIGH, all receive channels have detected valid framing. This output is LOW during the bonding resolution process. This output is driven only when configured for four channel bonding, and the receive parallel interface is clocked by REFCLK . LVTTL Input, Parallel Bond Inhibit. Active LOW. When asserted (LOW), this signal inhibits the static configuration input, adjustment of character offsets in all receive channels if the Bonding Sequence has Internal pull-up not been detected in all bonded channels. When HIGH, all channels that have detected the Bonding Sequence are allowed to align their Receive Elasticity Buffer pipelines. For any channels to bond, the selected master channel must be a member of the group. When multiple devices are used together, the BOND_INH input on all parts must be configured the same. LVTTL Input, internal pull-up LVTTL Input, internal pull-down Three-state LVTTL Output Test Mode Select. Used to control access to the JTAG Test Modes. If maintained high for 5 TCLK cycles, the JTAG test controller is reset. The TAP controller is also reset automatically upon application of power to the device. JTAG Test Clock Test Data Out. JTAG data output buffer which is High-Z while JTAG test mode is not selected. BOND_ALL BOND_INH JTAG Interface TMS TCLK TDO TDI Power VCC GND +3.3V Power Signal and power ground for all internal circuits. Register captures a minimum of eight data bits and two control bits on each input clock cycle. When the Encoder is bypassed, the TXCTx[1:0] control bits, are part of the preencoded 10-bit character. LOW), the When the Encoder is enabled (TXMODE[1] TXCTx[1:0] bits are interpreted along with the associated TXDx[7:0] character to generate the specific 10-bit transmission character. When TXMODE[0] HIGH, an additional special character select (SCSEL) input is also captured and interpreted. This SCSEL input is used to modify the encoding of the associated characters. When the transmit Input Registers are clocked by a common clock (TXCLKA or REFCLK ), this SCSEL input can be changed on a clock-by-clock basis and affects all four channels. When operated with a separate input clock on each transmit channel, this SCSEL input is sampled synchronous to TXCLKA . While the value on SCSEL still affects all channels, it is interpreted when the character containing it is read from the transmit Phase-align Buffer (where all four paths are internally clocked synchronously). LVTTL Input, internal pull-up Test Data In. JTAG data input port. CYP(V)15G0401DXB HOTLink II Operation The CYP(V)15G0401DXB is a highly configurable device designed to support reliable transfer of large quantities of data, using high-speed serial links, from one or multiple sources to one or multiple destinations. This device supports four single-byte or single-character channels that may be combined to support transfer of wider buses. CYP(V)15G0401DXB Transmit Data Path Operating Modes The transmit path of the CYP(V)15G0401DXB supports four character-wide data paths. These data paths are used in multiple operating modes as controlled by the TXMODE[1:0] inputs. Input Register The bits in the Input Register for each channel support different assignments, based on if the character is unencoded, encoded with two control bits, or encoded with three control bits. These assignments are shown in Table 1. Each Input Document #: 38-02002 Rev. *K Page 15 of 53 CYP15G0401DXB CYV15G0401DXB Table 1. Input Register Bit Assignments [6] Encoded Signal Name TXDx[0] (LSB) output a continuous C0.7 character to indicate to the remote receiver that an error condition is present in the link. 3-bit Control TXDx[0] TXDx[1] TXDx[2] TXDx[3] TXDx[4] TXDx[5] TXDx[6] TXDx[7] TXCTx[0] TXCTx[1] SCSEL In specific transmit modes, it is also possible to reset the Phase-align Buffers individually and with minimal disruption of the serial data stream. When the transmit interface is configured for generation of atomic Word Sync Sequences (TXMODE[1] = MID) and a Phase-align Buffer error is present, the transmission of a Word Sync Sequence will re-center the Phase-align Buffer and clear the error condition.[7] Parity Support In addition to the ten data and control bits that are captured at each transmit Input Register, a TXOPx input is also available on each channel. This allows the CYP(V)15G0401DXB to support ODD parity checking for each channel. Parity checking is available for all operating modes (including Encoder Bypass). The specific mode of parity checking is controlled by the PARCTL input, and operates per Table 2. Table 2. Input Register Bits Checked for Parity [8] Transmit Parity Check Mode (PARCTL) MID Signal Name TXDx[0] TXDx[1] TXDx[2] TXDx[3] TXDx[4] TXDx[5] TXDx[6] TXDx[7] TXCTx[0] TXCTx[1] TXOPx LOW TXMODE[1] = LOW X [9] X X X X X X X X X X X TXMODE[1] LOW HIGH X X X X X X X X X X X X X X X X X X X Unencoded DINx[0] DINx[1] DINx[2] DINx[3] DINx[4] DINx[5] DINx[6] DINx[7] DINx[8] DINx[9] N/A 2-bit Control TXDx[0] TXDx[1] TXDx[2] TXDx[3] TXDx[4] TXDx[5] TXDx[6] TXDx[7] TXCTx[0] TXCTx[1] N/A TXDx[1] TXDx[2] TXDx[3] TXDx[4] TXDx[5] TXDx[6] TXDx[7] TXCTx[0] TXCTx[1] (MSB) SCSEL Phase-align Buffer Data from the Input Registers are passed either to the Encoder or to the associated Phase-align Buffer. When the transmit paths are operated synchronous to REFCLK (TXCKSEL = LOW and TXRATE = LOW), the Phase-align Buffers are bypassed and data is passed directly to the Parity Check and Encoder blocks to reduce latency. When an Input-Register clock with an uncontrolled phase relationship to REFCLK is selected (TXCKSEL LOW) or if data is captured on both edges of REFCLK (TXRATE = HIGH), the Phase-align Buffers are enabled. These buffers are used to absorb clock phase differences between the presently selected input clock and the internal character clock. Initialization of the Phase-align Buffers takes place when the TXRST input is sampled LOW by two consecutive rising edges of REFCLK. When TXRST is returned HIGH, the present input clock phase relative to REFCLK is set. TXRST is an asynchronous input, but is sampled internally to synchronize it to the internal transmit path state machines. Once set, the input clocks are allowed to skew in time up to half a character period in either direction relative to REFCLK; i.e., 180. This time shift allows the delay paths of the character clocks (relative to REFCLK) to change due to operating voltage and temperature, while not affecting the design operation. If the phase offset, between the initialized location of the input clock and REFCLK , exceeds the skew handling capabilities of the Phase-align Buffer, an error is reported on the associated TXPERx output. This output indicates a continuous error until the Phase-align Buffer is reset. While the error remains active, the transmitter for the associated channel will When PARCTL is MID (open) and the Encoders are enabled (TXMODE[1] LOW), only the TXDx[7:0] data bits are checked for ODD parity along with the associated TXOPx bit. When PARCTL = HIGH with the Encoder enabled (or MID with the Encoder bypassed), the TXDx[7:0] and TXCTx[1:0] inputs are checked for ODD parity along with the associated TXOPx bit. When PARCTL = LOW, parity checking is disabled. When parity checking and the Encoder are both enabled (TXMODE[1] LOW), the detection of a parity error causes a C0.7 character of proper disparity to be passed to the Transmit Shifter. When the Encoder is bypassed (TXMODE[1] = LOW, LOW), detection of a parity error causes a positive disparity version of a C0.7 transmission character to be passed to the Transmit Shifter. Notes: 6. The TXOPx inputs are also captured in the associated Input Register, but their interpretation is under the separate control of PARCTL. 7. One or more K28.5 characters may be added or lost from the data stream during this reset operation. When used with non-Cypress devices that require a complete 16-character Word Sync Sequence for proper Receive Elasticity Buffer alignment, it is recommend that the sequence be followed by a second Word Sync Sequence to ensure proper operation. 8. Transmit path parity errors are reported on the associated TXPERx output. 9. Bits marked as X are XORed together. Result must be a logic-1 for parity to be valid. Document #: 38-02002 Rev. *K Page 16 of 53 CYP15G0401DXB CYV15G0401DXB Encoder The character, received from the Input Register or Phase-align Buffer and Parity Check Logic, is then passed to the Encoder logic. This block interprets each character and any associated control bits, and outputs a 10-bit transmission character. Depending on the configured operating mode, the generated transmission character may be the 10-bit pre-encoded character accepted in the Input Register the 10-bit equivalent of the eight-bit Data character accepted in the Input Register the 10-bit equivalent of the eight-bit Special Character code accepted in the Input Register the 10-bit equivalent of the C0.7 SVS character if parity checking was enabled and a parity error was detected the 10-bit equivalent of the C0.7 SVS character if a Phase-align Buffer overflow or underflow error is present a character that is part of the 511-character BIST sequence a K28.5 character generated as an individual character or as part of the 16-character Word Sync Sequence. The selection of the specific characters generated are controlled by the TXMODE[1:0], SCSEL, TXCTx[1:0], and TXDx[7:0] inputs for each character. Data Encoding Raw data, as received directly from the Transmit Input Register, is seldom in a form suitable for transmission across a serial link. The characters must usually be processed or transformed to guarantee a minimum transition density (to allow the serial receive PLL to extract a clock from the data stream). a DC-balance in the signaling (to prevent baseline wander). run-length limits in the serial data (to limit the bandwidth requirements of the serial link). the remote receiver a way of determining the correct character boundaries (framing). When the Encoder is enabled (TXMODE[1] LOW), the characters to be transmitted are converted from Data or Special Character codes to 10-bit transmission characters (as selected by their respective TXCTx[1:0] and SCSEL inputs), using an integrated 8B/10B Encoder. When directed to encode the character as a Special Character code, it is encoded using the Special Character encoding rules listed in Table 27. When directed to encode the character as a Data character, it is encoded using the Data Character encoding rules in Table 26. The 8B/10B Encoder is standards compliant with ANSI/NCITS ASC X3.230-1994 (Fibre Channel), IEEE 802.3z (Gigabit Ethernet), the IBM ESCON and FICON channels, Digital Video Broadcast (DVB-ASI), and ATM Forum standards for data transport. Many of the Special Character codes listed in Table 27 may be generated by more than one input character. The CYP(V)15G0401DXB is designed to support two independent (but non-overlapping) Special Character code tables. This allows the CYP(V)15G0401DXB to operate in mixed environments with other Cypress HOTLink devices using the enhanced Cypress command code set, and the reduced command sets of other non-Cypress devices. Even when used in an environment that normally uses non-Cypress Special Character codes, the selective use of Cypress command codes can permit operation where running disparity and error handling must be managed. Following conversion of each input character from eight bits to a 10-bit transmission character, it is passed to the Transmit Shifter and is shifted out LSB first, as required by ANSI and IEEE standards for 8B/10B coded serial data streams. Transmit Modes The operating mode of the transmit path is set through the TXMODE[1:0] inputs. These static three-level select inputs allow one of nine transmit modes to be selected. The transmit modes are listed in Table 3 Table 3. Transmit Operating Modes TX Mode TXMODE [1:0] Mode Number Word Sync Sequence Support None Operating Mode SCSEL Control None None None Special Character Word Sync None Special Character Word Sync None TXCTx Function Encoder Bypass Reserved for test Reserved for test Encoder Control Encoder Control Encoder Control Encoder Control Encoder Control Encoder Control 0 1 2 3 4 5 6 7 8 LL LM None LH None ML Atomic MM Atomic MH Atomic HL Interruptible HM Interruptible HH Interruptible The encoded modes (TX Modes 3 through 8) support multiple encoding tables. These encoding tables vary by the specific combinations of SCSEL, TXCTx[1], and TXCTx[0] that are used to control the generation of data and control characters. These multiple encoding forms allow maximum flexibility in interfacing to legacy applications, while also supporting numerous extensions in capabilities. TX Mode 0Encoder Bypass When the Encoder is bypassed, the character captured from the TXDx[7:0] and TXCTx[1:0] inputs is passed directly to the Transmit Shifter without modification. If parity checking is enabled (PARCTL LOW) and a parity error is detected, the 10-bit character is replaced with the 1001111000 pattern (+C0.7 character). With the Encoder bypassed, the TXCTx[1:0] inputs are considered part of the data character and do not perform a control function that would otherwise modify the interpretation of the TXDx[7:0] bits. The bit usage and mapping of these control bits when the Encoder is bypassed is shown in Table 4. In Encoder Bypass mode, the SCSEL input is ignored. All clocking modes interpret the data the same, with no internal linking between channels. TX Modes 1 and 2Factory Test Modes These modes enable specific factory test configurations. They are not considered normal operating modes of the device. Page 17 of 53 Document #: 38-02002 Rev. *K CYP15G0401DXB CYV15G0401DXB Table 4. Encoder Bypass Mode (TXMODE[1:0] = LL) TXDx[0] (LSB)[10] TXDx[1] TXDx[2] TXDx[3] TXDx[4] TXDx[5] TXDx[6] TXDx[7] TXCTx[0] TXCTx[1] (MSB) Signal Name Bus Weight 20 2 21 2 10Bit Name a b c d e i f g h j 23 24 2 5 determined by the current running disparity and the 8B/10B coding rules). The disparity of the second and third K28.5 characters in this sequence are reversed from what normal 8B/10B coding rules would generate. The remaining K28.5 characters in the sequence follow all 8B/10B coding rules. The disparity of the generated K28.5 characters in this sequence follow a pattern of either ++++++++ or ++++++++. When TXMODE[1] = MID (open, TX modes 3, 4, and 5), the generation of this character sequence is an atomic (non-interruptible) operation. Once it has been successfully started, it cannot be stopped until all sixteen characters have been generated. The content of the associated Input Registers is ignored for the duration of this 16-character sequence. At the end of this sequence, if the TXCTx[1:0] = 11 condition is sampled again, the sequence restarts and remains uninterruptible for the following fifteen character clocks. If parity checking is enabled, the character used to start the Word Sync Sequence must also have correct ODD parity. Once the sequence is started, parity is not checked on the following fifteen characters in the Word Sync Sequence. When TXMODE[1] = HIGH (TX modes 6, 7, and 8), the generation of the Word Sync Sequence becomes an interruptible operation. In TX Mode 6, this sequence is started as soon as the TXCTx[1:0] = 11 condition is detected on a channel. In order for the sequence to continue on that channel, the TXCTx[1:0] inputs must be sampled as 00 for the remaining fifteen characters of the sequence. If at any time a sample period exists where TXCTx[1:0] 00, the Word Sync Sequence is terminated, and a character representing the associated data and control bits is generated by the Encoder. This resets the Word Sync Sequence state machine such that it will start at the beginning of the sequence at the next occurrence of TXCTx[1:0] = 11. When parity checking is enabled and TXMODE[1] = HIGH, all characters (including those in the middle of a Word Sync Sequence) must have correct parity. The detection of a character with incorrect parity during a Word Sync Sequence will interrupt that sequence and force generation of a C0.7 SVS character. Any interruption of the Word Sync Sequence causes the sequence to terminate. When TXCKSEL = LOW, the Input Registers for all four transmit channels are clocked by REFCLK.[4] When TXCKSEL = HIGH, the Input Registers for all four transmit channels are clocked with TXCLKA . In these clock modes all four sets of TXCTx[1:0] inputs operate synchronous to the SCSEL input.[11] TX Mode 4Atomic Word Sync and SCSEL Control of Word Sync Sequence Generation When configured in TX Mode 4, the SCSEL input is captured along with the associated TXCTx[1:0] data control inputs. These bits combine to control the interpretation of the TXDx[7:0] bits and the characters generated by them. These bits are interpreted as listed in Table 6. 26 28 27 29 Entry or configuration of the device into these modes will not damage the device. TX Mode 3 Word Sync and SCSEL Control of Special Codes When configured in TX Mode 3, the SCSEL input is captured along with the associated TXCTx[1:0] data control inputs. These bits combine to control the interpretation of the TXDx[7:0] bits and the characters generated by them. These bits are interpreted as listed in Table 5. When TXCKSEL = MID, all transmit channels capture data into their Input Registers using independent TXCLKx clocks. In this mode, the SCSEL input is sampled only by TXCLKA . When the character (accepted in the Channel-A Input Register) has passed through the Phase-align Buffer and any selected parity validation, the level captured on SCSEL is passed to the Encoder of the remaining channels during this same cycle. Table 5. TX Modes 3 and 6 Encoding TXCTx[1] TXCTx[0] SCSEL Characters Generated X 0 1 X X 0 0 1 0 Encoded data character 1 K28.5 fill character 1 Special character code 1 16-character Word Sync Sequence To avoid the possible ambiguities that may arise due to the uncontrolled arrival of SCSEL relative to the characters in the alternate channels, SCSEL is often used as static control input. Word Sync Sequence When TXCTx[1:0] = 11, a 16-character sequence of K28.5 characters, known as a Word Sync Sequence, is generated on the associated channel. This sequence of K28.5 characters may start with either a positive or negative disparity K28.5 (as Note: 10. LSB is shifted out first. 11. When operated in any configuration where receive channels are bonded together, TXCKSEL must be either LOW or HIGH (not MID) to ensure that associated characters are transmitted in the same character cycle. Document #: 38-02002 Rev. *K Page 18 of 53 CYP15G0401DXB CYV15G0401DXB When TXCKSEL = MID, all transmit channels operate independently. In this mode, the SCSEL input is sampled only by TXCLKA . When the character accepted in the Channel-A Input Register has passed any selected validation and is ready to be passed to the Encoder, the level captured on SCSEL is passed to the Encoders of the remaining channels during this same cycle. Table 6. TX Modes 4 and 7 Encoding TXCTx[1] TXCTx[0] SCSEL dual-channel bonding is enabled (RXMODE[1] = MID), the CYP(V)15G0401DXB is configured such that channels A and B are bonded together to form a two-character-wide path, and channels C and D are bonded together to form a second two-character-wide path. When operated in this two-channel bonded mode, the TXCTA[0] and TXCTB[0] inputs control the interpretation of the data on both the A and B channels, while the TXCTC[0] and TXCTD[0] inputs control the interpretation of the data on both the C and D channels. The characters on each half of these bonded channels are controlled by the associated TXCTx[1] bit. The specific characters generated by these control bit combinations are listed in Table 8. Note especially that any time TXCTB[0] is sampled HIGH, both channels A and B start generating an atomic Word Sync Sequence, regardless of the state of any of the other bits in the A or B Input Registers. In a similar fashion, anytime TXCTD[0] is sampled HIGH, both the C and D channels start generation of an atomic Word Sync Sequence. When RXMODE[1] = HIGH, the CYP(V)15G0401DXB is configured for quad-channel bonding, such that channels A, B, C, and D are bonded together to form a four-character-wide path. When operated in this mode, the TXCTA[0] and TXCTB[0] inputs control the interpretation of the data on all four channels. The characters generated on these bonded channels are controlled by the associated TXCTx[1] bit. The specific characters generated by these bits are listed in Table 9. Unlike dual-channel bonded modes, when all four channels are bonded together, the TXCTC[0] and TXCTD[0] inputs are ignored. Transmit BIST Each transmit channel contains an internal pattern generator that can be used to validate both device and link operation. These generators are enabled by the associated BOE[x] signals listed in Table 10 (when the BISTLE latch enable input is HIGH). When enabled, a register in the associated transmit channel becomes a signature pattern generator by logically converting to a Linear Feedback Shift Register (LFSR). This LFSR generates a 511-character sequence that includes all Data and Special Character codes, including the explicit violation symbols. This provides a predictable yet pseudo-random sequence that can be matched to identical LFSR in the attached Receiver(s). If the receive channels are configured for common clock operation (RXCKSEL MID) and Encoder is enabled (TXMODE[1] LOW) each pass is preceded by a 16-character Word Sync Sequence to allow Elasticity Buffer alignment and management of clockfrequency variations. When the BISTLE signal is HIGH, any BOE[x] input that is LOW enables the BIST generator in the associated transmit channel (or the BIST checker in the associated receive channel). When BISTLE returns LOW, the values of all BOE[x] signals are captured in the BIST Enable Latch. These values remain in the BIST Enable Latch until BISTLE is returned HIGH to open the latch. A device reset (TRSTZ sampled LOW), presets the BIST Enable Latch to disable BIST on all channels. All data and data-control information present at the associated TXDx[7:0] and TXCTx[1:0] inputs are ignored when BIST is active on that channel. Page 19 of 53 Characters Generated Encoded data character K28.5 fill character Special character code 16-character Word Sync Sequence X 0 0 1 X 0 1 X 0 1 1 1 Changing the state of SCSEL will change the relationship of the characters to other channels. SCSEL should either be used as a static configuration input, or changed only when the state of TXCTx[1:0] on the alternate channels are such that SCSEL is ignored during the change. TX Mode 4 also supports an Word Sync Sequence. Unlike TX Mode 3, this sequence starts when SCSEL and TXCTx[0] are both high. With the exception of the combination of control bits used to initiate the sequence, the generation and operation of this Word Sync Sequence is the same as for TX Mode 3. TX Mode 5Atomic Word Sync generation without SCSEL. When configured in TX Mode 5, the SCSEL signal is not used. In addition to the standard character encodings, two additional encoding mappings are controlled by the Channel Bonding selection made through the RXMODE[1:0] inputs. For non-bonded operation, the TXCTx[1:0] inputs for each channel control the characters generated by that channel. The specific characters generated by these bits are listed in Table 7. Table 7. TX Modes 5 and 8 Encoding, Non-bonded (RXMODE[1] = LOW) TXCTx[1] TXCTx[0] SCSEL Characters Generated Encoded data character K28.5 fill character Special character code 16-character Word Sync Sequence X X X X 0 0 1 1 0 1 0 1 TX Mode 5 also has the capability of generating an atomic Word Sync Sequence. For the sequence to be started, the TXCTx[1:0] inputs must both be sampled HIGH. The generation and operation of this Word Sync Sequence is the same as TX Mode 3Two additional encoding maps are provided for use when receive channel bonding is enabled. When Document #: 38-02002 Rev. *K CYP15G0401DXB CYV15G0401DXB Table 8. TX Modes 5 and 8, Dual-channel Bonded (RXMODE[1] = MID) TXCTB[1] TXCTB[0] TXCTC[1] TXCTC[0] TXCTD[1] TXCTD[0] TXCTA[1] TXCTA[0] SCSEL Characters Generated Encoded data character on channel A K28.5 fill character on channel A Special character code on channel A 16-character word sync on channel A Encoded data character on channel B K28.5 fill character on channel B Special character code on channel B 16-character word sync on channel B 16-character word sync on channels A and B Encoded data character on channel C K28.5 fill character on channel C Special character code on channel C 16-character word sync on channel C Encoded data character on channel D K28.5 fill character on channel D Special character code on channel D 16-character word sync on channel D 16-character word sync on channels C and D X X X X X X X X X X X X X X X X X X 0 0 1 1 X X X X X X X X X X X X X X 0 1 0 1 0 1 0 1 X X X X X X X X X X X X X X 0 0 1 1 X X X X X X X X X X 0 0 0 0 0 0 0 0 1 X X X X X X X X X X X X X X X X X X 0 0 1 1 X X X X X X X X X X X X X X 0 1 0 1 0 1 0 1 X X X X X X X X X X X X X X 0 0 1 1 X X X X X X X X X X 0 0 0 0 0 0 0 0 1 Table 9. TX Modes 5 and 8, Quad-Channel Bonded (RXMODE[1] = HIGH) TXCTB[1] TXCTB[0] TXCTC[1] TXCTC[0] TXCTD[1] TXCTD[0] TXCTA[1] TXCTA[0] SCSEL Characters Generated Encoded data character on channel A K28.5 fill character on channel A Special character code on channel A 16-character word sync on channel A Encoded data character on channel B K28.5 fill character on channel B Special character code on channel B 16-character word sync on channel B Encoded data character on channel C K28.5 fill character on channel C Special character code on channel C 16-character word sync on channel C Encoded data character on channel D K28.5 fill character on channel D Special character code on channel D 16-character word sync on channel D 16-character word sync on channels A, B, C, and D X X X X X X X X X X X X X X X X X 0 0 1 1 X X X X X X X X X X X X X 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 X X X X X 0 0 1 1 X X X X X X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 X X X X X X X X 0 0 1 1 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 0 0 1 1 X X X X X X X X X X X X X X X X X X Document #: 38-02002 Rev. *K Page 20 of 53 CYP15G0401DXB CYV15G0401DXB Serial Output Drivers The serial interface Output Drivers use high-performance differential CML (Current Mode Logic) to provide source-matched drivers for the transmission lines. These Serial Drivers accept data from the Transmit Shifters. These outputs have signal swings equivalent to that of standard PECL drivers, and are capable of driving AC-coupled optical modules or transmission lines. When configured for local loopback (LPEN = HIGH), all enabled Serial Drivers are configured to drive a static differential logic-1. Each Serial Driver can be enabled or disabled separately through the BOE[7:0] inputs, as controlled by the OELE latch-enable signal. When OELE is HIGH, the signals present on the BOE[7:0] inputs are passed through the Serial Output Enable Latch to control the Serial Driver. The BOE[7:0] input associated with a specific OUTxy driver is listed in Table 10. When OELE is HIGH and BOE[x] is HIGH, the associated Serial Driver is enabled. When OELE is HIGH and BOE[x] is LOW, the associated Serial Driver is disabled and internally powered down. If both Serial Drivers for a channel are in this disabled state, the associated internal logic for that channel is also powered down. When OELE returns LOW, the values present on the BOE[7:0] inputs are latched in the Output Enable Latch, and remain there until OELE returns HIGH to enable the latch. A device reset (TRSTZ sampled LOW) clears this latch and disables all Serial Drivers. Table 10. Output Enable, BIST, and Receive Channel Enable Signal Map BOE Input BOE[7] BOE[6] BOE[5] BOE[4] BOE[3] BOE[2] BOE[1] BOE[0] Output Controlled (OELE) OUTD2 OUTD1 OUTC2 OUTC1 OUTB2 OUTB1 OUTA2 OUTA1 BIST Channel Enable (BISTLE) Transmit D Receive D Transmit C Receive C Transmit B Receive B Transmit A Receive A Receive PLL Channel Enable (RXLE) X Receive D X Receive C X Receive B X Receive A When TXRATE = HIGH (Half-rate REFCLK), TXCKSEL = HIGH or MID (TXCLKx or TXCLKA selected to clock input register) is an invalid mode of operation. SPDSEL is a static three-level select [5] (ternary) input that selects one of three operating ranges for the serial data outputs and inputs. The operating serial signaling-rate and allowable range of REFCLK frequencies are listed in Table 11. Table 11. Operating Speed Settings SPDSEL LOW MID (Open) HIGH TXRATE 1 0 1 0 1 0 REFCLK Frequency (MHz) reserved 19.540 2040 4080 4075 80150 Signaling Rate (MBaud) 195400 400800 8001500 The REFCLK input is a differential input with each input internally biased to 1.4V. If the REFCLK+ input is connected to a TTL, LVTTL, or LVCMOS clock source, REFCLK can be left floating and the input signal is recognized when it passes through the internally biased reference point. When both the REFCLK+ and REFCLK inputs are connected, the clock source must be a differential clock. This can be either a differential LVPECL clock that is DC- or AC-coupled, or a differential LVTTL or LVCMOS clock. By connecting the REFCLK input to an external voltage source or resistive voltage divider, it is possible to adjust the reference point of the REFCLK+ input for alternate logic levels. When doing so, it is necessary to ensure that the input differential crossing point remains within the parametric range supported by the input. CYP(V)15G0401DXB Receive Data Path Serial Line Receivers Two differential Line Receivers, INx1 and INx2 , are available on each channel for accepting serial data streams. The active Serial Line Receiver on a channel is selected using the associated INSELx input. The Serial Line Receiver inputs are differential, and can accommodate wire interconnect and filtering losses or transmission line attenuation greater than 16 dB. For normal operation, these inputs should receive a signal of at least VIDIFF > 100 mV, or 200 mV peak-to-peak differential. Each Line Receiver can be DC- or AC-coupled to +3.3V powered fiber-optic interface modules (any ECL/PECL family, not limited to 100K PECL) or AC-coupled to +5V powered optical modules. The common-mode tolerance of these line receivers accommodates a wide range of signal termination voltages. Each receiver provides internal DC-restoration, to the center of the receivers common mode range, for AC-coupled signals. The local loopback input (LPEN) allows the serial transmit data to be routed internally back to the Clock and Data Recovery circuit associated with each channel. When configured for local loopback, all transmit Serial Driver outputs are forced to output a differential logic-1. This prevents local diagnostic patterns from being broadcast to attached remote receivers. NOTE: When all transmit channels are disabled (i.e., both outputs disabled in all channels) and a channel is re-enabled, the data on the Serial Drivers may not meet all timing specifications for up to 200 s. Transmit PLL Clock Multiplier The Transmit PLL Clock Multiplier accepts a character-rate or half-character-rate external clock at the REFCLK input, and multiples that clock by 10 or 20 (as selected by TXRATE) to generate a bit-rate clock for use by the Transmit Shifter. It also provides a character-rate clock used by the transmit paths. This clock multiplier PLL can accept a REFCLK input between 20 MHz and 150 MHz, however, this clock range is limited by the operating mode of the CYP(V)15G0401DXB clock multiplier (controlled by TXRATE) and by the level on the SPDSEL input. Document #: 38-02002 Rev. *K Page 21 of 53 CYP15G0401DXB CYV15G0401DXB Signal Detect/Link Fault Each selected Line Receiver (i.e., that routed to the clock and data recovery PLL) is simultaneously monitored for analog amplitude above limit specified by SDASEL transition density greater than specified limit range controller reports the received data stream within normal frequency range (1500 ppm)[12] receive channel enabled All of these conditions must be valid for the Signal Detect block to indicate a valid signal is present. This status is presented on the LFIx (Link Fault Indicator) output associated with each receive channel. Table 12. Analog Amplitude Detect Valid Signal Levels [13] SDASEL LOW HIGH Typical signal with peak amplitudes above 140 mV p-p differential 420 mV p-p differential operates at, or near the rate of the incoming data stream for two primary cases: when the incoming data stream resumes after a time in which it has been missing when the incoming data stream is outside the acceptable frequency range To perform this function, the frequency of the VCO is periodically sampled and compared to the frequency of the REFCLK input. If the VCO is running at a frequency beyond 1500 ppm [12] as defined by the reference clock frequency, it is periodically forced to the correct frequency (as defined by REFCLK, SPDSEL, and TXRATE) and then released in an attempt to lock to the input data stream. The sampling and relock period of the Range Control is calculated as follows: RANGE CONTROL SAMPLING PERIOD = (REFCLKPERIOD) * (16000). During the time that the Range Control forces the PLL VCO to run at REFCLK*10 (or REFCLK*20 when TXRATE = HIGH) rate, the LFIx output will be asserted LOW. While the PLL is attempting to re-lock to the incoming data stream, LFIx may be either HIGH or LOW (depending on other factors such as transition density and amplitude detection) and the recovered byte clock (RXCLKx) may run at an incorrect rate (depending on the quality or existence of the input serial data stream). After a valid serial data stream is applied, it may take up to one RANGE CONTROL SAMPLING PERIOD before the PLL locks to the input data stream, after which LFIx should be HIGH. Receive Channel Enabled The CYP(V)15G0401DXB contains four receive channels that can be independently enabled and disabled. Each channel can be enabled or disabled separately through the BOE[7:0] inputs, as controlled by the RXLE latch-enable signal. When RXLE is HIGH, the signals present on the BOE[7:0] inputs are passed through the Receive Channel Enable Latch to control the PLLs and logic of the associated receive channel. The BOE[7:0] input associated with a specific receive channel is listed in Table 10. When RXLE is HIGH and BOE[x] is HIGH, the associated receive channel is enabled to receive and recover a serial stream. When RXLE is HIGH and BOE[x] is LOW, the associated receive channel is disabled and powered down. If a single channel of a bonded-pair or bonded-quad is disabled, the other receive channels may not bond correctly. If the disabled channel is selected as the master channel for insert/delete or recovered clock select, these functions will not work correctly. Any disabled channel indicates an asserted LFIx output. When RXLE returns LOW, the values present on the BOE[7:0] inputs are latched in the Receive Channel Enable Latch, and remain there until RXLE returns HIGH to open the latch again.[14] MID (Open) 280 mV p-p differential Analog Amplitude While most signal monitors are based on fixed constants, the analog amplitude level detection is adjustable. This allows operation with highly attenuated signals, or in high-noise environments. This adjustment is made through the SDASEL signal, a three-level select[5] input, which sets the trip point for the detection of a valid signal at one of three levels, as listed in Table 12. This control input affects the analog monitors for all receive channels. The Analog Signal Detect Monitors are active for the Line Receiver selected by the associated INSELx input. When the channel is configured for local loopback (LPEN = HIGH), no line receivers are selected, and the LFIx output for each channel reports only the receive VCO frequency out-of-range and transition density status of the associated transmit signal. When local loopback is active, the Analog Signal Detect Monitors are disabled. Transition Density The Transition Detection logic checks for the absence of any transitions spanning greater than six transmission characters (60 bits). If no transitions are present in the data received on a channel, the Transition Detection logic for that channel will assert LFIx. The LFIx output remains asserted until at least one transition is detected in each of three adjacent received characters. Range Controls The Clock/Data Recovery (CDR) circuit includes logic to monitor the frequency of the Phase Locked Loop (PLL) Voltage Controlled Oscillator (VCO) used to sample the incoming data stream. This logic ensures that the VCO Notes: 12. REFCLK has no phase or frequency relationship with the recovered clock(s) and only acts as a centering reference to reduce clock synchronization time. REFCLK must be within 1500 PPM (0.15%) of the remote transmitters PLL reference (REFCLK) frequency. Although transmitting to a HOTLink II receiver necessitates the frequency difference between the transmitter and receiver reference clocks to be within 1500-PPM, the stability of the crystal needs to be within the limits specified by the appropriate standard when transmitting to a remote receiver that is compliant to that standard. For example, to be IEEE 802.3z Gigabit Ethernet compliant, the frequency stability of the crystal needs to be within 100 PPM. 13. The peak amplitudes listed in this table are for typical waveforms that have generally 3 4 transitions for every ten bits. In a worse case environment the signals may have a sign-wave appearance (highest transition density with repeating 0101...). Signal peak amplitudes levels within this environment type could increase the values in the table above by approximately 100 mV. 14. When a disabled receive channel is re-enabled, the status of the associated LFIx output and data on the parallel outputs for the associated channel may be indeterminate for up to 2 ms. Document #: 38-02002 Rev. *K Page 22 of 53 CYP15G0401DXB CYV15G0401DXB Clock/Data Recovery The extraction of a bit-rate clock and recovery of bits from each received serial stream is performed by a separate Clock/Data Recovery (CDR) block within each receive channel. The clock extraction function is performed by embedded phase-locked loops (PLLs) that track the frequency of the transitions in the incoming bit streams and align the phase of their internal bit-rate clocks to the transitions in the selected serial data streams. The specific bit combinations of these framing characters are listed in Table 13. When the specific bit combination of the selected framing character is detected by the Framer, the boundaries of the characters present in the received data stream are known. Table 13. Framing Character Selector Bits Detected in Framer FRAMCHAR LOW MID (Open) HIGH Framer The Framer on each channel operates in one of three different modes, as selected by the RFMODE input. In addition, the Framer itself may be enabled or disabled through the RFEN input. When RFEN = LOW, the framers in all four receive paths are disabled, and no combination of bits in a received data stream will alter the character boundaries. When RFEN = HIGH, the Framer selected by RFMODE is enabled on all four channels. When RFMODE = LOW, the Low-Latency Framer is selected[16]. This Framer operates by stretching the recovered character clock until it aligns with the received character boundaries. In this mode, the Framer starts its alignment process on the first detection of the selected framing character. To reduce the impact on external circuits that make use of a recovered clock, the clock period is not stretched by more than two bit-periods in any one clock cycle. When operated with a character-rate output clock (RXRATE = LOW), the output of properly framed characters may be delayed by up to nine character-clock cycles from the detection of the selected framing character. When operated with a half-character-rate output clock (RXRATE = HIGH), the output of properly framed characters may be delayed by up to fourteen character-clock cycles from the detection of the selected framing character. When RFMODE = MID (open), the Cypress-mode Multi-Byte Framer is selected. The required detection of multiple framing characters makes the associated link much more robust to incorrect framing due to aliased framing characters in the data stream. In this mode, the Framer does not adjust the character clock boundary, but instead aligns the character to the already recovered character clock. This ensures that the recovered clock does not contain any significant phase changes or hops during normal operation or framing, and allows the recovered clock to be replicated and distributed to other external circuits or components using PLL-based clock distribution elements. In this framing mode, the character boundaries are only adjusted if the selected framing character is detected at least twice within a span of 50 bits, with both instances on identical 10-bit character boundaries. Character Name Bits Detected Reserved for test Comma+ or Comma K28.5 or +K28.5 00111110XX [15] or 11000001XX 0011111010 or 1100000101 Each CDR accepts a character-rate (bit-rate / 10) or half-character-rate (bit-rate / 20) reference clock from the REFCLK input. This REFCLK input is used to ensure that the VCO (within the CDR) is operating at the correct frequency. to reduce PLL acquisition time and to limit unlocked frequency excursions of the CDR VCO when there is no input data present at the selected Serial Line Receiver. Regardless of the type of signal present, the CDR will attempt to recover a data stream from it. If the frequency of the recovered data stream is outside the limits of the range control monitor, the CDR will switch to track REFCLK instead of the data stream. Once the CDR output (RXCLKx) frequency returns back close to REFCLK frequency, the CDR input will be switched back to track the input data stream. In case no data is present at the input this switching behavior may result in brief RXCLKx frequency excursions from REFCLK. However, the validity of the input data stream is indicated by the LFIx output. The frequency of REFCLK is required to be within 1500 ppm[12] of the frequency of the clock that drives the REFCLK input of the remote transmitter to ensure a lock to the incoming data stream. For systems using multiple or redundant connections, the LFIx output can be used to select an alternate data stream. When an LFIx indication is detected, external logic can toggle selection of the associated INx1 and INx2 inputs through the associated INSELx input. When a port switch takes place, it is necessary for the receive PLL for that channel to reacquire the new serial stream and frame to the incoming character boundaries. If channel bonding is also enabled, a channel alignment event is also required before the output data may be considered usable. Deserializer/Framer Each CDR circuit extracts bits from the associated serial data stream and clocks these bits into the Shifter/Framer at the bit-clock rate. When enabled, the Framer examines the data stream, looking for one or more Comma or K28.5 characters at all possible bit positions. The location of this character in the data stream is used to determine the character boundaries of all following characters. Framing Character The CYP(V)15G0401DXB allows selection of two combinations of framing characters to support requirements of different interfaces. The selection of the framing character is made through the FRAMCHAR input. Notes: 15. The standard definition of a Comma contains only seven bits. However, since all valid Comma characters within the 8B/10B character set also have the eighth bit as an inversion of the seventh bit, the compare pattern is extended to a full eight bits to reduce the possibility of a framing error. 16. When Receive BIST is enabled on a channel, the Low-Latency Framer must not be enabled. The BIST sequence contains an aliased K28.5 framing character, which would cause the Receiver to update its character boundaries incorrectly. Document #: 38-02002 Rev. *K Page 23 of 53 CYP15G0401DXB CYV15G0401DXB When RFMODE = HIGH, the Alternate-mode Multi-Byte Framer is enabled. Like the Cypress-mode Multi-Byte Framer, multiple framing characters must be detected before the character boundary is adjusted. In this mode, the Framer does not adjust the character clock boundary, but instead aligns the character to the already recovered character clock. In this mode, the data stream must contain a minimum of four of the selected framing characters, received as consecutive characters, on identical 10-bit boundaries, before character framing is adjusted. Framing for all channels is enabled when RFEN = HIGH. If RFEN = LOW, the Framer for each channel is disabled. When the framers are disabled, no changes are made to the recovered character boundaries on any channel, regardless of the presence of framing characters in the data stream. 10B/8B Decoder Block The Decoder logic block performs three primary functions: decoding the received transmission characters back into Data and Special Character codes comparing generated BIST patterns with received characters to permit at-speed link and device testing generation of ODD parity on the decoded characters. 10B/8B Decoder The framed parallel output of each Deserializer Shifter is passed to the 10B/8B Decoder where, if the Decoder is enabled (DECMODE LOW), it is transformed from a 10-bit transmission character back to the original Data and Special Character codes. This block uses the 10B/8B Decoder patterns in Table 26 and Table 27 of this data sheet. Valid data characters are indicated by a 000b bit-combination on the associated RXSTx[2:0] status bits, and Special Character codes are indicated by a 001b bit-combination on these same status outputs. Framing characters, invalid patterns, disparity errors, and synchronization status are presented as alternate combinations of these status bits. The 10B/8B Decoder operates in two normal modes, and can also be bypassed. The operating mode for the Decoder is controlled by the DECMODE input. When DECMODE = LOW, the Decoder is bypassed and raw 10-bit characters are passed to the Output Register. In this mode, channel bonding is not possible, the Receive Elasticity Buffers are bypassed, and RXCKSEL must be MID. This clock mode generates separate RXCLKx outputs for each receive channel. When DECMODE = MID (or open), the 10-bit transmission characters are decoded using Table 26 and Table 27. Received Special Code characters are decoded using the Cypress column of Table 27. When DECMODE = HIGH, the 10-bit transmission characters are decoded using Table 26 and Table 27. Received Special Code characters are decoded using the Alternate column of Table 27. In all settings where the Decoder is enabled, the receive paths may be operated as separate channels or bonded to form various multi-channel buses. Receive BIST Operation The Receiver interfaces contain internal pattern generators that can be used to validate both device and link operation. Document #: 38-02002 Rev. *K These generators are enabled by the associated BOE[x] signals listed in Table 10 (when the BISTLE latch enable input is HIGH). When enabled, a register in the associated receive channel becomes a pattern generator and checker by logically converting to a Linear Feedback Shift Register (LFSR). This LFSR generates a 511-character sequence that includes all Data and Special Character codes, including the explicit violation symbols. This provides a predictable yet pseudorandom sequence that can be matched to an identical LFSR in the attached Transmitter(s). If the receive channels are configured for common clock operation (RXCKSEL MID) each pass is preceded by a 16-character Word Sync Sequence. When synchronized with the received data stream, the associated Receiver checks each character in the Decoder with each character generated by the LFSR and indicates compare errors and BIST status at the RXSTx[2:0] bits of the Output Register. See Table 22 for details. When the BISTLE signal is HIGH, any BOE[x] input that is LOW enables the BIST generator/checker in the associated Receive channel (or the BIST generator in the associated Transmit channel). When BISTLE returns LOW, the values of all BOE[x] signals are captured in the BIST Enable Latch. These values remain in the BIST Enable Latch until BISTLE is returned HIGH. All captured signals in the BIST Enable Latch are set HIGH (i.e., BIST is disabled) following a device reset (TRSTZ is sampled LOW). When BIST is first recognized as being enabled in the Receiver, the LFSR is preset to the BIST-loop start-code of D0.0. This D0.0 character is sent only once per BIST loop. The status of the BIST progress and any character mismatches is presented on the RXSTx[2:0] status outputs. Code rule violations or running disparity errors that occur as part of the BIST loop do not cause an error indication. RXSTx[2:0] indicates 010b or 100b for one character period per BIST loop to indicate loop completion. This status can be used to check test pattern progress. These same status values are presented when the Decoder is bypassed and BIST is enabled on a receive channel. The status reported on RXSTx[2:0] by the BIST state machine are listed in Table 22. When Receive BIST is enabled, the same status is reported on the receive status outputs regardless of the state of DECMODE. The specific patterns checked by each receiver are described in detail in the Cypress application note HOTLink Built-In Self-Test. The sequence compared by the CYP(V)15G0401DXB when RXCKSEL = MID is identical to that in the CY7B933 and CY7C924DX, allowing interoperable systems to be built when used at compatible serial signaling rates. If the number of invalid characters received ever exceeds the number of valid characters by sixteen, the receive BIST state machine aborts the compare operations and resets the LFSR to the D0.0 state to look for the start of the BIST sequence again. When the receive paths are configured for common clock operation (RXCKSEL MID), each pass must be preceded by a 16-character Word Sync Sequence to allow output buffer alignment and management of clock frequency variations. This is automatically generated by the transmitter when its local RXCKSEL MID and Encoder is enabled (TXMODE[1] LOW). Page 24 of 53 CYP15G0401DXB CYV15G0401DXB The BIST state machine requires the characters to be correctly framed for it to detect the BIST sequence. If the Low Latency Framer is enabled (RFMODE = LOW), the Framer will misalign to an aliased framing character within the BIST sequence. If the Alternate Multi-Byte Framer is enabled (RFMODE = HIGH) and the Receiver outputs are clocked relative to a recovered clock, it is necessary to frame the Receiver before BIST is enabled. Receive Elasticity Buffer Each receive channel contains an Elasticity Buffer that is designed to support multiple clocking modes. These buffers allow data to be read using an Elasticity Buffer read-clock that is asynchronous in both frequency and phase from the Elasticity Buffer write clock, or to use a read clock that is frequency coherent but with uncontrolled phase relative to the Elasticity Buffer write clock. Each Elasticity Buffer is 10-characters deep, and supports a twelve-bit wide data path. It is capable of supporting a decoded character, three status bits, and a parity bit for each character present in the buffer. The write clock for these buffers is always the recovered clock for the associated read channel. The read clock for the Elasticity Buffers may come from one of three selectable sources. It may be a character-rate REFCLK (RXCKSEL = LOW and DECMODE LOW) recovered clock from an alternate receive channel (RXCKSEL = HIGH and DECMODE LOW). These Elasticity Buffers are also used to align the output data streams when multiple channels are bonded together. More details on how the Elasticity Buffer is used for Independent Channel Modes and Channel Bonded Modes is discussed in the next section. The Elasticity Buffers are bypassed whenever the Decoders are bypassed (DECMODE = LOW). When the Decoders and Elasticity Buffers are bypassed, RXCKSELx must be set to MID. Receive Modes The operating mode of the receive path is set through the RXMODE[1:0] inputs. The Reserved for test settings (RXMODE0 = M) is not allowed, even if the receiver is not being used, as it will stop normal function of the device. When the decoder is disabled, the RXMODE[1:0] settings are ignored as long as they are not test modes. These modes determine the type (if any) of channel bonding and status reporting. The different receive modes are listed in Table 14. Independent Channel Modes In independent channel modes (RX Modes 0 and 2, where RXMODE[1] = LOW), all four receive paths may be clocked in any clock mode selected by RXCKSEL. When RXCKSEL = LOW, all four receive channels are clocked by REFCLK. RXCLKB and RXCLKD outputs are disabled (High-Z), and the RXCLKA and RXCLKC outputs present a buffered and delayed form of REFCLK. In this mode, the Receive Elasticity Buffers are enabled. For REFCLK clocking, the Elasticity Buffers must be able to insert K28.5 characters and delete framing characters as appropriate. The insertion of a K28.5 or deletion of a framing character can occur at any time on any channel, however, the actual timing on these insertions and deletions is controlled in part by the how the transmitter sends its data. Insertion of a K28.5 character can only occur when the receiver has a framing character in the Elasticity Buffer. Likewise, to delete a framing character, one must also be present in the Elasticity Buffer. To prevent a receive buffer overflow or underflow on a receive channel, a minimum density of framing characters must be present in the received data streams. Table 14. Receive Operating Modes RX Mode RXMODE [1:0] Mode Number Channel Bonding Independent Independent Dual Dual Quad Quad Operating Mode RXSTx Status Reporting Status A Reserved for test Status B Status A Reserved for test Status B Status A Reserved for test Status B 0 1 2 3 4 5 6 7 8 LL LM LH ML MM MH HL HM HH When RXCKSEL = MID (or open), each received channel Output Register is clocked by the recovered clock for that channel. Since no characters may be added or deleted, the receiver Elasticity Buffer is bypassed. When RXCKSEL = HIGH in independent channel mode, all channels are clocked by the selected recovered clock. This selection is made using the RXCLKB+ and RXCLKD+ signals as inputs per Table 15. This selected clock is always output on RXCLKA and RXCLKC . In this mode the Receive Elasticity Buffers are enabled. When data is output using a recovered clock (RXCKSEL = HIGH), the receive channels are not allowed to insert and delete characters, except as necessary for Elasticity Buffer alignment. When the Elasticity Buffer is used, prior to reception of valid data, a Word Sync Sequence (or at least four framing characters) must be received to center the Elasticity Buffers. The Elasticity Buffer may also be centered by a device reset operation initiated by TRSTZ input. However, following such an event, the CYP(V)15G0401DXB also requires a framing event before it will correctly decode characters. When RXCKSEL = HIGH, since the Elasticity Buffer is not allowed to insert or delete framing characters, the transmit clocks on all received channels must all be from a common source. Table 15. Independent and Quad Channel Bonded Recovered Clock or Master Channel Select RXCLKB+ 0 0 1 1 RXCLKD+ 0 1 0 1 RXCLKA /RXCLKC Clock Source RXCLKA RXCLKB RXCLKC RXCLKD Document #: 38-02002 Rev. *K Page 25 of 53 CYP15G0401DXB CYV15G0401DXB Dual-Channel Bonded Modes In dual-channel bonded modes (RX Modes 3 and 5, where RXMODE[1] = MID or open), the associated receive channel pair Output Registers must be clocked by a common clock. This mode does not operate when RXCKSEL = MID. Proper operation in this mode requires that the associated transmit data streams are clocked from a common reference with no long-term character slippage between the bonded channels. In dual-channel mode this means that channels A and B must be clocked from a common reference, and channels C and D must be clocked from a common reference. Prior to the reception of valid data, a Word Sync Sequence (or that portion necessary to align the receive buffers) must be received on the bonded channels (within the allowable inter-channel skew window) to allow the Receive Elasticity Buffers to be centered. While normal characters may be output prior to this alignment event, they are not necessarily aligned to the same word boundaries as when they were transmitted. When RXCKSEL = LOW, all four receive channels are clocked by REFCLK. RXCLKB and RXCLKD outputs are disabled (High-Z), and RXCLKA and RXCLKC present a buffered and delayed form of REFCLK. In this mode, the Receive Elasticity Buffers are enabled. For REFCLK clocking, the Elasticity Buffers must be able to insert K28.5 characters and delete framing characters as appropriate. While these insertions and deletions can take place at any time, they must occur at the same time on both channels that are bonded together. This is necessary to keep the data in the bonded channel-pairs properly aligned. This insert and delete process is controlled by the channel selected using the RXCLKB+ and RXCLKD+ inputs as listed in Table 16. When RXCKSEL = HIGH, the A and B channels are clocked by the selected recovered clock, and the C and D channels are clocked by the selected recovered clock, as shown in Table 16. The output clock for the channel A/B bonded-pair is output continuously on RXCLKA . The clock source for this output is selected from the recovered clock for channel A or channel B using the RXCLKB+ input. The output clock for the channel C/D bonded-pair is output continuously on RXCLKC . The clock source for this output is selected from the recovered clock for channel C or channel D using the RXCLKD+ input. Table 16. Dual-Channel Bonded Recovered Clock Select Clock Source RXCLKB+ 0 1 X X RXCLKD+ X X 0 1 RXCLKA RXCLKA RXCLKB RXCLKC RXCLKD RXCLKC Registers must be clocked by a common clock. This mode does not operate when RXCKSEL = MID. Proper operation in this mode requires that the four transmit data streams are clocked from a common reference with no long-term character slippage between the bonded channels. In quad-channel modes this means that the transmit channels A, B, C, and D must all be clocked from a common reference. Prior to the delivery of valid data, at least one Word Sync Sequence (or that portion necessary to align the receive buffers) must be received on all four bonded channels (within the allowable inter-channel skew window) to allow the Receive Elasticity Buffers to be centered and aligned. When RXCKSEL = LOW, all four receive channels are clocked by the internal derivative of REFCLK. RXCLKB and RXCLKD outputs are disabled (High-Z), and RXCLKA and RXCLKC present a buffered and delayed form of REFCLK. In this mode the Receive Elasticity Buffers are enabled. For REFCLK clocking, the Elasticity Buffers must be able to insert K28.5 characters and delete framing characters as appropriate. While these insertions and deletions can take place at any time, they must occur at the same time on all four channels. This is necessary to keep the data in the four bonded channels properly aligned. This insert and delete process is controlled by the master channel selected using the RXCLKB+ and RXCLKD+ inputs as listed in Table 15. When RXCKSEL = HIGH, all four receive-channel Output Registers are clocked by the selected recovered clock. The clock select for quad channel mode is the same as that for independent channel operation. This selection is made using the RXCLKB+ and RXCLKD+ inputs, as shown in Table 15. The output clock for the four bonded channels is output continuously on RXCLKA and RXCLKC . When data is output using a recovered clock (RXCKSEL = HIGH), receive channels are not allowed to insert and delete characters, except as necessary for Elasticity Buffer alignment. Multi-device Bonding When configured for quad-channel bonding (RXMODE[1] = HIGH) it is also possible to bond channels across multiple devices. This form of channel bonding is only possible when RXCKSEL = LOW, selecting REFCLK as the output clock for all channels on all devices. In this mode, the BONDST[1:0] signals of all bonding devices must be connected together to pass Elasticity buffer management events between the devices. This is necessary to keep the data on all bonded devices in common alignment. One device must be selected as the controlling device by driving the MASTER pin on that device LOW. All other devices must have their MASTER pin HIGH to prevent having multiple active drivers on the BONDST bus. Within the master device, a single receive channel is selected as the master channel for generation of the different BONDST[1:0] status. This selection is made using the RXCLKB+ and RXCLKD+ inputs, as shown in Table 15. This allows the master channel selection to be changed through external control of the MASTER, RXCLKB+, and RXCLKD+ inputs.[17] When data is output using a recovered clock (RXCKSEL = HIGH), receive channels are not allowed to insert and delete characters, except as necessary for Elasticity Buffer alignment. Quad Channel Modes In quad-channel modes (RX modes 6 and 7, where RXMODE[1] = HIGH), all four receive channel Output Note: 17. Any change in the master device or channel must be followed by assertion of TRSTZ to properly initialize the device. Document #: 38-02002 Rev. *K Page 26 of 53 CYP15G0401DXB CYV15G0401DXB In this mode, the BOND_ALL signal of all bonding devices must be connected together. The BOND_ALL signal is a wired AND and the signal is LOW during the bonding resolution process. After the completion of bonding resolution it returns HIGH. Power Control The CYP(V)15G0401DXB supports user control of the powered up or down state of each transmit and receive channel. The receive channels are controlled by the RXLE signal and the values present on the BOE[7:0] bus. The transmit channels are controlled by the OELE signal and the values present on the BOE[7:0] bus. Powering down unused channels will save power and reduce system heat generation. Controlling system power dissipation will improve the system performance. Receive Channels When RXLE is HIGH, the signals on the BOE[7:0] inputs directly control the power enables for the receive PLLs and analog circuits. When a BOE[7:0] input is HIGH, the associated receive channel [A through D] PLL and analog logic are active. When a BOE[7:0] input is LOW, the associated receive channel [A through D] PLL and analog circuits are powered down. When RXLE returns LOW, the last values present on the BOE[7:0] inputs are captured in the Receive Channel Enable Latch. The specific BOE[7:0] input signal associated with a receive channel is listed in Table 10. If a single channel of a bonded-pair or quad is disabled, this may prevent the other receive channels from bonding. If the disabled channel has been selected as the master channel for insert/delete functions, or for recovered clock select, these functions will not operate. Any disabled receive channel will indicate a constant LFIx output. When a disabled receive channel is re-enabled, the status of the associated LFIx output and data on the parallel outputs for the associated channel may be indeterminate for up to 2 ms. Transmit Channels When OELE is HIGH, the signals on the BOE[7:0] inputs directly control the power enables for the Serial Drivers. When a BOE[x] input is HIGH, the associated Serial Driver is enabled. When a BOE[x] input is LOW, the associated Serial Driver is disabled and powered down. If both Serial Drivers of a channel are disabled, the internal logic for that transmit channel is powered down. When OELE returns LOW, the values present on the BOE[7:0] inputs are latched in the Output Enable Latch. Device Reset State When the CYP(V)15G0401DXB is reset by assertion of TRSTZ, the Transmit Enable and Receive Enable Latches are both cleared, and the BIST Enable Latch is preset. In this state, all transmit and receive channels are disabled, and BIST is disabled on all channels. Following a device reset, it is necessary to enable the transmit and receive channels used for normal operation. This can be done by sequencing the appropriate values on the BOE[7:0] inputs while the OELE and RXLE signals are raised and lowered. For systems that do not require dynamic control of power, or want the device to power up in a fixed configuration, it is also possible to strap the RXLE and OELE control signals HIGH to permanently enable their associated latches. Connection of the associated BOE[7:0] signals to a stable HIGH will then enable the respective transmit and receive channels as soon as the TRSTZ signal is deasserted. Output Bus Each receive channel presents a 12-signal output bus consisting of an eight-bit data bus a three-bit status bus a parity bit. The bit assignments of the Data and Status are dependent on the setting of DECMODE. The bits are assigned as per Table 17. Table 17. Output Register Bit Assignments [18] Signal Name RXSTx[2] (LSB) RXSTx[1] RXSTx[0] RXDx[0] RXDx[1] RXDx[2] RXDx[3] RXDx[4] RXDx[5] RXDx[6] RXDx[7] (MSB) DECMODE = LOW COMDETx DOUTx[0] DOUTx[1] DOUTx[2] DOUTx[3] DOUTx[4] DOUTx[5] DOUTx[6] DOUTx[7] DOUTx[8] DOUTx[9] DECMODE = MID or HIGH RXSTx[2] RXSTx[1] RXSTx[0] RXDx[0] RXDx[1] RXDx[2] RXDx[3] RXDx[4] RXDx[5] RXDx[6] RXDx[7] When the 10B/8B Decoder is bypassed (DECMODE = LOW), the framed 10-bit character and a single status bit (COMDET) are presented at the receiver Output Register. The status output indicates if the character in the Output Register is one of the selected framing characters. The bit usage and mapping of the external signals to the raw 10B transmission character is shown in Table 18. The COMDETx outputs are HIGH when the character in the Output Register for the associated channel contains the selected framing character at the proper character boundary, and LOW for all other bit combinations. When the Low-Latency Framer and half-rate receive port clocking are also enabled (RFMODE = LOW, RXRATE = HIGH, and RXCKSEL LOW), the Framer will stretch the recovered clock to the nearest 20-bit boundary such that the rising edge of RXCLKx+ occurs when COMDETx is present on the associated output bus. Notes: 18. The RXOPx outputs are also driven from the associated Output Register, but their interpretation is under the separate control of PARCTL. Document #: 38-02002 Rev. *K Page 27 of 53 CYP15G0401DXB CYV15G0401DXB Table 18. Decoder Bypass Mode (DECMODE = LOW) . Table 19. Output Register Parity Generation Receive Parity Generate Mode (PARCTL) MID Signal Name RXSTx[2] RXSTx[1] RXSTx[0] RXDx[0] RXDx[1] RXDx[2] RXDx[3] RXDx[4] RXDx[5] RXDx[6] RXDx[7] X X X X X X X X X X X X X X X X X X LOW [19] Signal Name RXSTx[2] (LSB) RXSTx[1] RXSTx[0] RXDx[0] RXDx[1] RXDx[2] RXDx[3] RXDx[4] RXDx[5] RXDx[6] RXDx[7] (MSB) Bus Weight COMDETx 2 2 0 1 10Bit Name a b c d e i f g h j DECMODE = LOW DECMODE LOW HIGH X [20] X X X X X X X X X X 22 24 25 23 26 27 8 2 29 When the Cypress or Alternate Mode Framer is enabled and half-rate receive port clocking is also enabled (RFMODE LOW and RXRATE = HIGH), the output clock is not modified when framing is detected, but a single pipeline stage may be added or subtracted from the data stream by the Framer logic such that the rising edge of RXCLKx+ occurs when COMDETx is present on the associated output bus. This adjustment only occurs when the Framer is enabled (RFEN = HIGH). When the Framer is disabled, the clock boundaries are not adjusted, and COMDETx may be asserted during the rising edge of RXCLK (if an odd number of characters were received following the initial framing). Parity Generation In addition to the eleven data and status bits that are presented by each channel, an RXOPx parity output is also available on each channel. This allows the CYP(V)15G0401DXB to support ODD parity generation for each channel. To handle a wide range of system environments, the CYP(V)15G0401DXB supports different forms of parity generation, including no parity. When the decoders are enabled (DECMODE LOW), parity can be generated on the RXDx[7:0] character the RXDx[7:0] character and RXSTx[2:0] status. When the decoders are bypassed (DECMODE = LOW), parity can be generated on the RXDx[7:0] and RXSTx[1:0] bits the RXDx[7:0] and RXSTx[2:0] bits. These modes differ in the number of bits which are included in the parity calculation. Only ODD parity is provided which ensures that at least one bit of the data bus is always a logic-1. Those bits covered by parity generation are listed in Table 19. Parity generation is enabled through the three-level select PARCTL input. When PARCTL = LOW, parity checking is disabled, and the RXOPx outputs are all disabled (High-Z). When PARCTL = MID (open) and the decoders are enabled (DECMODE LOW), ODD parity is generated for the received and decoded character in the RXDx[7:0] signals and is presented on the associated RXOPx output. When PARCTL = MID and the decoders are bypassed (DECMODE = LOW), ODD parity is generated for the received and decoded character in the RXDx[7:0] and RXSTx[1:0] bit positions. When PARCTL = HIGH, ODD parity is generated for the RXDx[7:0] and the associated RXSTx[2:0] status bits. Receive Status Bits When the 10B/8B Decoder is enabled (DECMODE LOW), each character presented at the Output Register includes three associated status bits. These bits are used to identify: if the contents of the data bus are valid the type of character present the state of receive BIST operations (regardless of the state of DECMODE) character violations channel bonding status. These conditions normally overlap; e.g., a valid data character received with incorrect running disparity is not reported as a valid data character. It is instead reported as a Decoder violation of some specific type. This implies a hierarchy or priority level to the various status bit combinations. The hierarchy and value of each status is listed in Table 20 when channel bonding enabled and in Table 21 when channel bonding is disabled. Within these status codes, there are three modes of status reporting. The two data status reporting modes (Type A and Type B) are selectable through the RXMODE[0] input. These status types allow compatibility with legacy systems, while allowing full reporting in new systems. These status values are generated in part by the Receive Synchronization State Machine, and are listed in Table 20. The receive status when the channels are operated independently with channel bonding disabled is shown in Table 21. The receive status when Receive BIST is enabled is shown in Table 22. Notes: 19. Receive path parity output drivers (RXOPx) are disabled (High-Z) when PARCTL = LOW. 20. When the Decoder is bypassed (DECMODE = LOW) and BIST is not enabled (Receive BIST Latch output is HIGH), RXSTx[2] is driven to a logic-0, except when the character in the output buffer is a framing character. Document #: 38-02002 Rev. *K Page 28 of 53 CYP15G0401DXB CYV15G0401DXB Receive Synchronization State Machine when Channel Bonding is enabled Each receive channel contains a Receive Synchronization State Machine that is enabled whenever the receive channels are configured for channel bonding (RXMODE[1] LOW). This machine handles loss and recovery of bit, channel, and word framing, and part of the control for channel bonding. Separate forms of the state machine exist for the two different types of status reporting. When operated without channel bonding (RXMODE[1] = LOW, RX Modes 0 and 2), these state machines are disabled and characters are decoded directly as shown in Table 21. Status Type-A Receive State Machine This machine has four primary states: NO_SYNC, RESYNC, COULD_NOT_BOND, and IN_SYNC, as shown in Figure 2. The IN_SYNC state can respond with multiple status types, while others can respond with only one type. Status Type-B Receive State Machine This machine has four primary states: NO_SYNC, RESYNC, IN_SYNC, and COULD_NOT_BOND, as shown in Figure 3. Some of these states can respond with only one status value, while others can respond with multiple status types. Table 20. Receive Character Status Bits when Channel Bonding is enabled RXSTx [2:0] Priority 000 001 010 7 7 2 Description RX Status A RX Status B Normal Character Received. The valid Data character on the output bus meets all the formatting requirements of Data characters listed in Table 26. Special Code Detected. The valid special character on the output bus meets all the formatting requirements of the Special Code characters listed in Table 27, but is not the presently selected framing character or a decoder violation indication. Receive Elasticity Buffer Underrun/Overrun Error. Channel Lock Detected. Asserts when the bonded The receive buffer was not able to add/drop a K28.5 or channels have detected RESYNC within the allotted framing character. window. Presented only on the last cycle before aligned data is presented. Framing Character Detected. This indicates that a character matching the patterns identified as a framing character (as selected by FRAMCHAR) was detected. The decoded value of this character is present to the associated output bus. Codeword Violation. The character on the output bus is a C0.7. This indicates that the received character cannot be decoded into any valid character. Loss of Sync. The character on the bus is invalid, due to an event that has caused the receive channels to lose synchronization. When channel bonding is enabled, this indicates that one or more channels have either lost bit synchronization (loss of character framing), or that the bonded channels are no longer in proper character alignment. When the channels are operated independently (with the decoder enabled), this indicates a PLL Out of Lock condition. Loss of Sync. The character on the bus is invalid, due to an event that has caused the receive channels to lose synchronization. When channel bonding is enabled, this indicates that one or more channels have either lost bit synchronization (loss of character framing), or that the bonded channels are no longer in proper character alignment. When the channels are operated independently (with the decoder enabled), this indicates a PLL Out of Lock condition. Also used to indicate Receive Elasticity Buffer underflow/ overflow errors. 011 100 101 5 4 1 110 111 6 3 Running Disparity Error. The character on the output bus is a C4.7, C1.7, or C2.7. Resync. The receiver state machine is in the Resynchronization state. In this state the data on the output bus reflects the presently decoded FRAMCHAR. Document #: 38-02002 Rev. *K Page 29 of 53 CYP15G0401DXB CYV15G0401DXB Reset IN_SYNC 5 NO_SYNC RXSTx=101 6 4 3 4 COULD_NOT_BOND RXSTx=101 1 RESYNC RXSTx=111 2 Table 21. # State Transition Conditions 1 (BOND_INH = LOW) AND (Deskew Window Expired) 2 FRAMCHAR Detected 3 (Elasticity Buffer Under/Overrun) OR (RX PLL Loss of Lock) OR (Any Decoder Error) 4 Four Consecutive FRAMCHAR Detected 5 (Elasticity Buffer Under/Overrun) OR (RX PLL Loss of Lock) OR (Four Consecutive Decoder Errors) OR (Invalid Minus Valid = 4) 6 Valid Character other than a FRAMCHAR Figure 2. Status Type-A Receive State Machine for Channel Bonding Document #: 38-02002 Rev. *K Page 30 of 53 CYP15G0401DXB CYV15G0401DXB Reset RXSTx = 101 IN_SYNC 5 NO_SYNC RXSTx = 010 4 6 RXSTx = 010 1 RXSTx = 111 6 7 RXSTx = 101 3 4 RESYNC_IN_SYNC RXSTx=011 RESYNC RXSTx=111 2 2 Table 21. # Condition 1 (BOND_INH = LOW OR Master Channel Did Not Bond) AND (Deskew Window Expired) OR (Decoder Error) 2 FRAMCHAR Detected 3 (Elasticity Buffer Under/Overrun) OR (RX PLL Loss of Lock) OR (Any Decoder Error) OR (BOND_INH = LOW) OR (Master Channel Did Not Bond) AND (Deskew Window Expired)) 4 Four Consecutive FRAMCHAR Detected 5 (Elasticity Buffer Under/Overrun) OR (RX PLL Loss of Lock) OR (Four Consecutive Decoder Errors) OR (Invalid Minus Valid = 4) 6 (Last FRAMCHAR Before a Valid Character) AND (Bonded to MASTER Channel) 7 (Elasticity Buffer Under/Overrun) OR (RX PLL Loss of Lock) Figure 3. Status Type-B Receive State Machine for Channel Bonding Document #: 38-02002 Rev. *K Page 31 of 53 CYP15G0401DXB CYV15G0401DXB Table 21. Receive character status when channels are operated in independent mode (RXMODE[1:0] = LL or LH) RXSTx[2:0] 000 001 010 011 100 101 110 111 Priority 7 7 2 5 4 1 6 3 Type-A Status Type-B status Normal Character Received. The valid data character with the correct running disparity received Special Code Detected. Special code other than the selected framing character or decoder violation received INVALID Receive Elasticity Buffer underrun/overrun error. The receive elasticity buffer was not able to add/drop a K28.5 or framing character. Framing Character Detected. This indicates that a character matching the patterns identified as a framing character was detected. The decoded value of this character is present on the associated output bus. Codeword Violation. The character on the output bus is a C0.7. This indicates that the received character cannot be decoded into any valid character. PLL Out Of Lock Indication Running Disparity Error. The character on the output bus is a C4.7, C1.7 or C2.7 INVALID Receive BIST Status (Receive BIST = Enabled) BIST Data Compare. Character compared correctly BIST Command Compare. Character compared correctly BIST Last Good. Last Character of BIST sequence detected and valid. RESERVED for TEST BIST Last Bad. Last Character of BIST sequence detected invalid. BIST Start. Receive BIST is enabled on this channel, but character compares have not yet commenced. This also indicates a PLL Out of Lock condition, and Elasticity Buffer overflow/underflow conditions. BIST Error. While comparing characters, a mismatch was found in one or more of the decoded character bits. BIST Wait. The receiver is comparing characters. but has not yet found the start of BIST character to enable the LFSR. Table 22. Receive character status when channels are operated to receive BIST Data RXSTx[2:0] 000 001 010 011 100 101 110 111 Priority 7 7 2 5 4 1 6 3 Document #: 38-02002 Rev. *K Page 32 of 53 CYP15G0401DXB CYV15G0401DXB BIST Status State Machine When a receive path is enabled to look for and compare the received data stream with the BIST pattern, the RXSTx[2:0] bits identify the present state of the BIST compare operation. The BIST state machine has multiple states, as shown in Figure 4 and Table 22. When the receive PLL detects an out-of-lock condition, the BIST state is forced to the Start-of-BIST state, regardless of the present state of the BIST state machine. If the number of detected errors ever exceeds the number of valid matches by greater than sixteen, the state machine is forced to the WAIT_FOR_BIST state where it monitors the interface for the first character (D0.0) of the next BIST sequence. Also, if the Elasticity Buffer ever hits an overflow/underflow condition, the status is forced to the BIST_START until the buffer is recentered (approximately nine character periods). To ensure compatibility between the source and destination systems when operating in BIST modes, the sending and receiving ends of the link must use the same receive clock setup. (RXCKSEL = MID or RXCKSEL MID). JTAG Support The CYP(V)15G0401DXB contains a JTAG port to allow system level diagnosis of device interconnect. Of the available JTAG modes, only boundary scan is supported. This capability is present only on the LVTTL inputs, LVTTL outputs and the REFCLK clock input. The high-speed serial inputs and outputs are not part of the JTAG test chain. JTAG ID The JTAG device ID for the CYP(V)15G0401DXB is 1C800069x. Three-level Select Inputs Each Three-level select input reports as two bits in the scan register. These bits report the LOW, MID, and HIGH state of the associated input as 00, 10, and 11, respectively. Document #: 38-02002 Rev. *K Page 33 of 53 CYP15G0401DXB CYV15G0401DXB Monitor Data Received RXSTx = BIST_WAIT (111) RXSTx = BIST_START (101) Yes Start of BIST Detected Elasticity Buffer Error Receive BIST Detected LOW RXSTx = BIST_START (101) RX PLL Out of Lock No No Yes, RXSTx = BIST_COMMAND_COMPARE (001) OR BIST_DATA_COMPARE (000) Mismatch Compare Next Character Match RXSTx = BIST_COMMAND_COMPARE (001) Yes Auto-Abort Condition No Data or Command Command Data RXSTx = BIST_DATA_COMPARE (000) End-of-BIST State Yes, RXSTx = BIST_LAST_BAD (100) End-of-BIST State No Yes, RXSTx = BIST_LAST_GOOD (010) No, RXSTx = BIST_ERROR (110) Figure 4. Receive BIST State Machine Document #: 38-02002 Rev. *K Page 34 of 53 CYP15G0401DXB CYV15G0401DXB Maximum Ratings (Above which the useful life may be impaired. User guidelines only, not tested.) Storage Temperature .................................. 65C to +150C Ambient Temperature with Power Applied....55C to +125C Supply Voltage to Ground Potential ............... 0.5V to +3.8V DC Voltage Applied to LVTTL Outputs in High-Z State .......................................0.5V to VCC + 0.5V DC Input Voltage.................................... 0.5V to VCC + 0.5V Static Discharge Voltage.......................................... > 2000 V (per MIL-STD-883, Method 3015) Latch-up Current..................................................... > 200 mA Power-up Requirements The CYP(V)15G0401DXB requires one power-supply. The Voltage on any input or I/O pin cannot exceed the power pin during power-up Operating Range Range Commercial Industrial Ambient Temperature 0C to +70C 40C to +85C +3.3V 5% +3.3V 5% VCC Output Current into LVTTL Outputs (LOW)..................60 mA CYP(V)15G0401DXB DC Electrical Characteristics Over the Operating Range Parameter VOHT Description Output HIGH Voltage Output LOW Voltage Output Short Circuit Current High-Z Output Leakage Current Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current REFCLK Input, VIN = VCC Other Inputs, VIN = VCC REFCLK Input, VIN = 0.0V Other Inputs, VIN = 0.0V Test Conditions IOH = 4 mA, VCC = Min. = 0V[21] Min. 2.4 0 20 20 2.0 0.5 Max. VCC 0.4 20 VCC + 0.3 0.8 1.5 +40 1.5 40 +200 200 400 1.2 0.0 1.0 Min. Min. Min. VCC VCC VCC Max. Max. Max. 0.87 * VCC 0.0 VCC 100 Unit V V mA A V V mA A mA A A A mV V V V V V V A A A V V LVTTL-compatible Outputs VOLT IOST IOZL IOL = 4 mA, VCC = Min. VOUT LVTTL-compatible Inputs VILT IIHT IILT VIHT IIHPDT IILPUT Input HIGH Current with internal pull-down VIN = VCC Input LOW Current with internal pull-up Input Differential Voltage Highest Input HIGH Voltage Lowest Input LOW voltage Common Mode Range Three-level Input HIGH Voltage Three-level Input MID Voltage Three-level Input LOW Voltage Input HIGH Current Input MID current Input LOW current Output HIGH Voltage (VCC referenced) VIHHP VILLP VDIFF[22] LVDIFF Inputs: REFCLK VIN = 0.0V VCOMREF[23] VIHH VILL IIHH Three-level Inputs VCC 1.2V VCC VCC/2 VCC VIMM 0.47 * VCC 0.53 * VCC 0.13 * VCC 200 50 200 OUTC1 , OUTC2 , OUTD1 , OUTD2 VCC 0.5 VCC 0.5 VCC 0.2 VCC 0.2 IIMM IILL VIN = VCC VIN = VCC/2 VIN = GND 100 150 50 Differential CML Serial Outputs: OUTA1 , OUTA2 , OUTB1 , OUTB2 VOHC differential load differential load Notes: 21. Tested one output at a time, output shorted for less than one second, less than 10% duty cycle. 22. This is the minimum difference in voltage between the true and complement inputs required to ensure detection of a logic-1 or logic-0. A logic-1 exists when the true (+) input is more positive than the complement ( ) input. A logic-0 exists when the complement ( ) input is more positive than true (+) input. 23. The common mode range defines the allowable range of REFCLK+ and REFCLK when REFCLK+ = REFCLK . This marks the zero-crossing between the true and complement inputs as the signal switches between a logic-1 and a logic-0. Document #: 38-02002 Rev. *K Page 35 of 53 CYP15G0401DXB CYV15G0401DXB CYP(V)15G0401DXB DC Electrical Characteristics Over the Operating Range (continued) Parameter VOLC VODIF Description Output LOW Voltage (VCC referenced) Output Differential Voltage |(OUT+) (OUT)| Input Differential Voltage |(IN+) Highest Input HIGH Voltage Lowest Input LOW Voltage Input HIGH Current Input LOW Current Common Mode Input Range VIN = VIHE Max. VIN = VILE Min. VCC 2.0 700 VCC 1.95 VCC 0.05 Typ.[26] Commercial Industrial Commercial Industrial 830 870 Max.[27] 1060 1100 1060 1100 mA mA mA mA (IN )| 100 150 100 150 Test Conditions differential load differential load differential load differential load Min. VCC 1.4 VCC 1.4 450 560 100 Max. VCC 0.7 VCC 0.7 900 1000 1200 VCC 1350 Unit V V mV mV mV V V A A V VIHE VILE IILE IIHE VDIFFS [22] Differential Serial Line Receiver Inputs: INA1 , INA2 , INB1 , INB2 , INC1 , INC2 , IND1 , IND2 VCOM [24, 25] Power Supply ICC ICC Power Supply Current REFCLK = Max. Power Supply Current REFCLK = 125 MHz Test Loads and Waveforms 3.3V R1 = 590 R2 = 435 CL CL 7 pF (Includes fixture and probe capacitance) R1 RL = 100 RL R2 [28] (b) CML Output Test Load V IHE VIHE 80% 20% 270 ps VILE 80% [28] (a) LVTTL Output Test Load 3.0V Vth = 1.4V GND 1 ns 2.0V 0.8V 2.0V 0.8V V th = 1.4V 1 ns VILE 20% 270 ps CYP(V)15G0401DXB AC Characteristics Over the Operating Range Parameter fTS TXCLKx Clock Frequency TXCLKx Period TXCLKx HIGH Time TXCLKx LOW Time Description Min. 19.5 6.66 2.2 2.2 Max. 150 51.28 Unit MHz ns ns ns CYP(V)15G0401DXB Transmitter LVTTL Switching Characteristics Over the Operating Range tTXCLK (c) LVTTL Input Test Waveform [29] (d) CML/LVPECL Input Test Waveform tTXCLKH [30] tTXCLKL [30] Notes: 24. The common mode range defines the allowable range of INPUT+ and INPUT when INPUT+ = INPUT . This marks the zero-crossing between the true and complement inputs as the signal switches between a logic-1 and a logic-0. 25. Not applicable for AC-coupled interfaces. For AC-coupled interfaces, VDIFFS requirement still needs to be satisfied. 26. Maximum ICC is measured with VCC = MAX, RXCKSEL = LOW, with all TX and RX channels and Serial Line Drivers enabled, sending a continuous alternating 01 pattern to the associated receive channel, and outputs unloaded. 27. Typical ICC is measured under similar conditions except with VCC = 3.3V, TA = 25C, RXCKSEL = LOW, with all TX and RX channels enabled and one Serial Line Driver per transmit channel sending a continuous alternating 01 pattern to the associated receive channel. The redundant outputs on each channel are powered down and the parallel outputs are unloaded. 28. Cypress uses constant current (ATE) load configurations and forcing functions. This figure is for reference only. 5-pF differential load reflects tester capacitance, and is recommended at low data rates only. 29. The LVTTL switching threshold is 1.4V. All timing references are made relative to the point where the signal edges crosses the threshold voltage. 30. Tested initially and after any design or process changes that may affect these parameters, but not 100% tested. Document #: 38-02002 Rev. *K Page 36 of 53 CYP15G0401DXB CYV15G0401DXB CYP(V)15G0401DXB AC Characteristics Over the Operating Range (continued) tTXCLKR[30, 31, 32] tTXCLKF[30, 31, 32] tTXDS fTOS tTXDH tTXCLKO Parameter Description TXCLKx Rise Time TXCLKx Fall Time Transmit Data Set-Up Time to TXCLKx (TXCKSEL Transmit Data Hold Time from TXCLKx (TXCKSEL TXCLKO Period TXCLKO+ Duty Cycle with 60% HIGH time TXCLKO Duty Cycle with 40% HIGH time RXCLKx Clock Output Frequency RXCLKx Period RXCLKx HIGH Time (RXRATE = LOW) RXCLKx HIGH Time (RXRATE = HIGH) RXCLKx LOW Time (RXRATE = LOW) RXCLKx LOW Time (RXRATE = HIGH) RXCLKx Duty Cycle centered at 50% RXCLKx Rise Time RXCLKx Fall Time Status and Data Valid Time to RXCLKx (RXCKSEL HIGH or MID) Status and Data Valid Time to RXCLKx (HALF RATE RECOVERED CLOCK) Status and Data Valid Time From RXCLKx (RXCKSEL HIGH or MID) Status and Data Valid Time From RXCLKx (HALF RATE RECOVERED CLOCK) REFCLK Clock Frequency REFCLK Period REFCLK HIGH Time (TXRATE = HIGH) REFCLK HIGH Time (TXRATE = LOW) REFCLK LOW Time (TXRATE = HIGH) [34] Min. 0.2 0.2 LOW) LOW) 1.7 0.8 20 6.66 1.0 0.5 9.75 2.33 [30] 2.33 [30] 5.66 1.0 0.3 0.3 5UI 1.5 5UI 1.0 5UI 1.8 5UI 2.3 5.66 6.66 Max. 1.7 1.7 Unit ns ns ns ns TXCLKO Clock Frequency = 1x or 2x REFCLK Frequency 150 50 +0.5 +1.0 150 102.56 26.64 52.28 26.64 52.28 +1.0 1.2 1.2 MHz ns ns ns MHz ns ns ns ns ns ns ns ns ns ns ns ns tTXCLKOD+ tTXCLKOD fRS CYP(V)15G0401DXB Receiver LVTTL Switching Characteristics Over the Operating Range tRXCLKP tRXCLKH tRXCLKL tRXCLKD tRXCLKR [30] tRXCLKF [30] tRXDV [33] tRXDV+ [33] CYP(V)15G0401DXB REFCLK Switching Characteristics Over the Operating Range fREF 19.5 6.6 2.9 [30] 2.9 [30] 30 70 2 2 LOW) LOW) LOW) LOW) 2.5 1.7 0.8 9.5 5.9 5.9 150 51.28 MHz ns ns ns ns ns % ns ns ns ns ns ns tREFCLK tREFH tREFL tREFD REFCLK LOW Time (TXRATE = LOW) REFCLK Duty Cycle REFCLK Rise Time (20% 80%) REFCLK Fall Time (20% 80%) Transmit Data Setup Time to REFCLK (TXCKSEL Transmit Data Hold Time from REFCLK (TXCKSEL Receive Data Access Time from REFCLK (RXCKSEL Receive Data Valid Time from REFCLK (RXCKSEL tREFR [30, 31, 32] tREFF [30, 31, 32] tTREFDS tTREFDH tRREFDA[35] tRREFDV Notes: 31. The ratio of rise time to falling time must not vary by greater than 2:1. 32. For a given operating frequency, neither rise or fall specification can be greater than 20% of the clock-cycle period or the data sheet maximum time. 33. Parallel data output specifications are only valid if all inputs or outputs are loaded with similar DC and AC loads. 34. The duty cycle specification is a simultaneous condition with the tREFH and tREFL parameters. This means that at faster character rates the REFCLK duty cycle cannot be as large as 30% 70%. 35. Since this timing parameter is greater than the minimum time period of REFCLK it sets an upper limit to the frequency in which REFCLKx can be used to clock the receive data out of the output register. For predictable timing, users can use this parameter only if REFCLK period is greater than sum of tRREFDA and set-up time of the upstream device. When this condition is not true, RXCLKC or RXCLKA (a buffered or delayed version of REFCLK when RXCKSELx = LOW) could be used to clock the receive data out of the device. Document #: 38-02002 Rev. *K Page 37 of 53 CYP15G0401DXB CYV15G0401DXB CYP(V)15G0401DXB AC Characteristics Over the Operating Range (continued) Parameter tREFADV tREFADV+ Description Received Data Valid Time to RXCLKA (RXCKSEL = LOW) Received Data Valid Time from RXCLKA (RXCKSEL = LOW) Received Data Valid Time to RXCLKC (RXCKSEL = LOW) Received Data Valid Time from RXCLKC (RXCKSEL = LOW) REFCLK Frequency Referenced to Received Clock Period Description Bit Time CML Output Rise Time 20% 80% (CML Test Load) CML Output Fall Time 80% 20% (CML Test Load) Deterministic Jitter (peak-peak) Random Jitter ( ) Transmit PLL lock to REFCLK Receive PLL lock to input data stream (cold start) Receive PLL lock to input data stream Receive PLL Unlock Rate Total Jitter Tolerance Deterministic Jitter Tolerance IEEE 802.3z IEEE 802.3z 600 370 SPDSEL = HIGH SPDSEL = MID SPDSEL = LOW SPDSEL = HIGH SPDSEL = MID SPDSEL = LOW IEEE 802.3z IEEE 802.3z Condition Min. 10UI 4.7 0.5 10UI 4.3 0.2 1500 Min. 5100 50 100 180 50 100 180 +1500 Max. 660 270 500 1000 270 500 1000 25 11 200 376K 376K 46 Max. Unit ns ns ns ns ppm Unit ps ps ps ps ps ps ps ps ps us UI[39] UI UI ps ps tREFCDV tREFCDV+ tREFRX [12] Parameter tB tRISE [30] CYP(V)15G0401DXB Transmit Serial Outputs and TX PLL Characteristics Over the Operating Range tFALL [30] tDJ [30, 36, 38] tTXLOCK tRJ [30, 37, 38] CYP(V)15G0401DXB Receive Serial Inputs and CDR PLL Characteristics Over the Operating Range tRXLOCK tRXUNLOCK tJTOL[38] tDJTOL[38 ] Capacitance [30] Parameter CINTTL CINPECL Description TTL Input Capacitance PECL input Capacitance Test Conditions TA = 25C, f0 = 1 MHz, VCC = 3.3V TA = 25C, f0 = 1 MHz, VCC = 3.3V Max. 7 4 Unit pF pF Notes: 36. While sending continuous K28.5s, outputs loaded to a balanced 100 load, measured at the cross point of differential outputs, over the operating range. 37. While sending continuous K28.7s, after 100,000 samples measured at the cross point of differential outputs, time referenced to REFCLK input, over the operating range. 38. Total jitter is calculated at an assumed BER of 1E 12. Hence: total jitter (tJ) = (tRJ * 14) + tDJ. 39. Receiver UI (Unit Interval) is calculated as 1/(fREF * 20) (when RXRATE = HIGH) or 1/(fREF * 10) (when RXRATE = LOW) if no data is being received, or 1/(fREF * 20) (when RXRATE = HIGH) or 1/(fREF * 10) (when RXRATE = LOW) of the remote transmitter if data is being received. In an operating link this is equivalent to tB. Document #: 38-02002 Rev. *K Page 38 of 53 CYP15G0401DXB CYV15G0401DXB CYP(V)15G0401DXB HOTLink II Transmitter Switching Waveforms Transmit Interface Write Timing TXCKSEL LOW TXCLKx TXDx[7:0], TXCTx[1:0], TXOPx, SCSEL tTXCLKH tTXCLK tTXCLKL tTXDS tTXDH tREFCLK Transmit Interface Write Timing TXCKSEL = LOW TXRATE = LOW REFCLK TXDx[7:0], TXCTx[1:0], TXOPx, SCSEL tREFH tREFL tTREFDS tTREFDH tREFCLK tREFH Note 40 Note 40 Transmit Interface Write Timing TXCKSEL = LOW TXRATE = HIGH REFCLK tREFL TXDx[7:0], TXCTx[1:0], TXOPx, SCSEL tTREFDS tTREFDS tTREFDH tTREFDH Transmit Interface TXCLKO Timing TXCKSEL = LOW TXRATE = HIGH REFCLK Note 42 tREFCLK tREFH tREFL tTXCLKOD+ tTXCLKO tTXCLKOD Note 41 TXCLKO Notes: 40. When REFCLK is configured for half-rate operation (TXRATE = HIGH) and data is captured using REFCLK instead of a TXCLKx clock (TXCKSEL = LOW), data is captured using both the rising and falling edges of REFCLK. 41. The TXCLKO output is at twice the rate of REFCLK when TXRATE = HIGH and same rate as REFCLK when TXRATE = LOW. TXCLKO does not follow the duty cycle of REFCLK. 42. The rising edge of TXCLKO output has no direct phase relationship to the REFCLK input. Document #: 38-02002 Rev. *K Page 39 of 53 CYP15G0401DXB CYV15G0401DXB CYP(V)15G0401DXB HOTLink II Transmitter Switching Waveforms (continued) Transmit Interface TXCLKO Timing TXCKSEL = LOW TXRATE = LOW REFCLK Note 42 tREFH tREFCLK tREFL Note 41 tTXCLKOD+ tTXCLKO tTXCLKOD TXCLKO Switching Waveforms for the CYP(V)15G0401DXB HOTLink II Receiver Receive Interface Read Timing RXCKSEL = LOW TXRATE = LOW REFCLK tREFH tREFCLK tREFL tRREFDA RXDx[7:0], RXSTx[2:0], RXOPx tRREFDV tREFADV+ tREFCDV+ RXCLKA RXCLKC Note 43 tREFADV tREFCDV Receive Interface Read Timing RXCKSEL = LOW TXRATE = HIGH REFCLK tREFH tREFCLK tREFL tRREFDV RXDx[7:0], RXSTx[2:0], RXOPx tRREFDA tRREFDV tRREFDA tREFADV+ tREFCDV+ RXCLKA RXCLKC Note 43 tREFADV tREFCDV Note 44 Notes: 43. RXCLKA and RXCLKC are delayed in phase from REFCLK, and are different in phase from each other. 44. When operated with a half-rate REFCLK, the setup and hold specifications for data relative to RXCLKA and RXCLKC are relative to both rising and falling edges of the respective clock output. Document #: 38-02002 Rev. *K Page 40 of 53 CYP15G0401DXB CYV15G0401DXB Switching Waveforms for the CYP(V)15G0401DXB HOTLink II Receiver (continued) Receive Interface Read Timing RXCKSEL = HIGH or MID RXRATE = LOW RXCLKx+ tRXCLKH tRXCLKP tRXCLKL RXCLKx tRXDV RXDx[7:0], RXSTx[2:0], RXOPx tRXDV+ Receive Interface Read Timing RXCKSEL = HIGH or MID RXRATE = HIGH RXCLKx+ tRXCLKH tRXCLKP tRXCLKL RXCLKx tRXDV RXDx[7:0], RXSTx[2:0], RXOPx tRXDV+ Document #: 38-02002 Rev. *K Page 41 of 53 CYP15G0401DXB CYV15G0401DXB Table 23. Package Coordinate Signal Allocation Ball ID A01 A02 A03 A04 A05 A06 A07 A08 A09 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 B01 B02 B03 B04 B05 B06 B07 B08 B09 B10 B11 B12 B13 B14 B15 B16 B17 B18 B19 B20 C01 C02 C03 Signal Name INC1 OUTC1 INC2 OUTC2 VCC IND1 OUTD1 GND IND2 OUTD2 INA1 OUTA1 GND INA2 OUTA2 VCC INB1 OUTB1 INB2 OUTB2 INC1+ OUTC1+ INC2+ OUTC2+ VCC IND1+ OUTD1+ GND IND2+ OUTD2+ INA1+ OUTA1+ GND INA2+ OUTA2+ VCC INB1+ OUTB1+ INB2+ OUTB2+ TDI TMS INSELC Signal Type CML IN CML OUT CML IN CML OUT POWER CML IN CML OUT GROUND CML IN CML OUT CML IN CML OUT GROUND CML IN CML OUT POWER CML IN CML OUT CML IN CML OUT CML IN CML OUT CML IN CML OUT POWER CML IN CML OUT GROUND CML IN CML OUT CML IN CML OUT GROUND CML IN CML OUT POWER CML IN CML OUT CML IN CML OUT LVTTL IN PU LVTTL IN PU LVTTL IN Ball ID C04 C05 C06 C07 C08 C09 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 D01 D02 D03 D04 D05 D06 D07 D08 D09 D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 E01 E02 E03 E04 E17 E18 Signal Name INSELB VCC PARCTL SDASEL GND BOE[7] BOE[5] BOE[3] BOE[1] GND TXMODE[0] RXMODE[0] VCC TXRATE RXRATE LPEN TDO TCLK TRSTZ INSELD INSELA VCC RFMODE SPDSEL GND BOE[6] BOE[4] BOE[2] BOE[0] GND TXMODE[1] RXMODE[1] VCC BOND_INH RXLE RFEN MASTER VCC VCC VCC VCC VCC VCC Signal Type LVTTL IN POWER 3-LEVEL SEL 3-LEVEL SEL GROUND LVTTL IN PU LVTTL IN PU LVTTL IN PU LVTTL IN PU GROUND 3-LEVEL SEL 3-LEVEL SEL POWER LVTTL IN PD LVTTL IN PD LVTTL IN PD LVTTL 3-S OUT LVTTL IN PD LVTTL IN PU LVTTL IN LVTTL IN POWER 3-LEVEL SEL 3-LEVEL SEL GROUND LVTTL IN PU LVTTL IN PU LVTTL IN PU LVTTL IN PU GROUND 3-LEVEL SEL 3-LEVEL SEL POWER LVTTL IN PU LVTTL IN PU LVTTL IN PD LVTTL IN PD POWER POWER POWER POWER POWER POWER Ball ID E19 E20 F01 F02 F03 F04 F17 F18 F19 F20 G01 G02 G03 G04 G17 G18 G19 G20 H01 H02 H03 H04 H17 H18 H19 H20 J01 J02 J03 J04 J17 J18 J19 J20 K01 K02 K03 K04 K17 K18 K19 K20 L01 Signal Name VCC VCC TXPERC TXOPC TXDC[0] RXCKSEL BISTLE RXSTB[1] RXOPB RXSTB[0] TXDC[7] TXCKSEL TXDC[4] TXDC[1] DECMODE OELE FRAMCHAR RXDB[1] GND GND GND GND GND GND GND GND TXCTC[1] TXDC[5] TXDC[2] TXDC[3] RXSTB[2] RXDB[0] RXDB[5] RXDB[2] RXDC[2] RXCLKC TXCTC[0] LFIC RXDB[3] RXDB[4] RXDB[7] RXCLKB+ RXDC[3] Signal Type POWER POWER LVTTL OUT LVTTL IN PU LVTTL IN 3-LEVEL SEL LVTTL IN PU LVTTL OUT LVTTL 3-S OUT LVTTL OUT LVTTL IN 3-LEVEL SEL LVTTL IN LVTTL IN 3-LEVEL SEL LVTTL IN PU 3-LEVEL SEL LVTTL OUT GROUND GROUND GROUND GROUND GROUND GROUND GROUND GROUND LVTTL IN LVTTL IN LVTTL IN LVTTL IN LVTTL OUT LVTTL OUT LVTTL OUT LVTTL OUT LVTTL OUT LVTTL OUT LVTTL IN LVTTL OUT LVTTL OUT LVTTL OUT LVTTL OUT LVTTL I/O PD LVTTL OUT Document #: 38-02002 Rev. *K Page 42 of 53 CYP15G0401DXB CYV15G0401DXB Table 23. Package Coordinate Signal Allocation (continued) Ball ID L02 L03 L04 L17 L18 L19 L20 M01 M02 M03 M04 M17 M18 M19 M20 N01 N02 N03 N04 N17 N18 N19 N20 P01 P02 P03 P04 P17 P18 P19 P20 R01 R02 R03 R04 R17 R18 R19 R20 T01 T02 T03 T04 Signal Name RXCLKC+ TXCLKC TXDC[6] RXDB[6] LFIB RXCLKB TXDB[6] RXDC[4] RXDC[5] RXDC[7] RXDC[6] TXCTB[1] TXCTB[0] TXDB[7] TXCLKB GND GND GND GND GND GND GND GND RXDC[1] RXDC[0] RXSTC[0] RXSTC[1] TXDB[5] TXDB[4] TXDB[3] TXDB[2] RXSTC[2] RXOPC TXPERD TXOPD TXDB[1] TXDB[0] TXOPB TXPERB VCC VCC VCC VCC Signal Type LVTTL I/O PD LVTTL IN PD LVTTL IN LVTTL OUT LVTTL OUT LVTTL OUT LVTTL IN LVTTL OUT LVTTL OUT LVTTL OUT LVTTL OUT LVTTL IN LVTTL IN LVTTL IN LVTTL IN PD GROUND GROUND GROUND GROUND GROUND GROUND GROUND GROUND LVTTL OUT LVTTL OUT LVTTL OUT LVTTL OUT LVTTL IN LVTTL IN LVTTL IN LVTTL IN LVTTL OUT LVTTL 3-S OUT LVTTL OUT LVTTL IN PU LVTTL IN LVTTL IN LVTTL IN PU LVTTL OUT POWER POWER POWER POWER Ball ID T17 T18 T19 T20 U01 U02 U03 U04 U05 U06 U07 U08 U09 U10 U11 U12 U13 U14 U15 U16 U17 U18 U19 U20 V01 V02 V03 V04 V05 V06 V07 V08 V09 V10 V11 V12 V13 V14 V15 V16 V17 V18 V19 Signal Name VCC VCC VCC VCC TXDD[0] TXDD[1] TXDD[2] TXCTD[1] VCC RXDD[2] RXDD[1] GND RXOPD BOND_ALL REFCLK TXDA[1] GND TXDA[4] TXCTA[0] VCC RXDA[2] RXOPA RXSTA[2] RXSTA[1] TXDD[3] TXDD[4] TXCTD[0] RXDD[6] VCC RXDD[3] RXSTD[0] GND RXSTD[2] BONDST[0] REFCLK+ BONDST[1] GND TXDA[3] TXDA[7] VCC RXDA[7] RXDA[3] RXDA[0] Signal Type POWER POWER POWER POWER LVTTL IN LVTTL IN LVTTL IN LVTTL IN POWER LVTTL OUT LVTTL OUT GROUND LVTTL 3-S OUT OPEN DR PECL IN LVTTL IN GROUND LVTTL IN LVTTL IN POWER LVTTL OUT LVTTL OUT LVTTL OUT LVTTL OUT LVTTL IN LVTTL IN LVTTL IN LVTTL OUT POWER LVTTL OUT LVTTL OUT GROUND LVTTL OUT OPEN DR PECL IN OPEN DR GROUND LVTTL IN LVTTL IN POWER LVTTL OUT LVTTL OUT LVTTL OUT Ball ID V20 W01 W02 W03 W04 W05 W06 W07 W08 W09 W10 W11 W12 W13 W14 W15 W16 W17 W18 W19 W20 Y01 Y02 Y03 Y04 Y05 Y06 Y07 Y08 Y09 Y10 Y11 Y12 Y13 Y14 Y15 Y16 Y17 Y18 Y19 Y20 Signal Name RXSTA[0] TXDD[5] TXDD[7] LFID RXCLKD VCC RXDD[4] RXSTD[1] GND TXCLKO TXRST TXOPA SCSEL GND TXDA[2] TXDA[6] VCC LFIA RXCLKA RXDA[4] RXDA[1] TXDD[6] TXCLKD RXDD[7] RXCLKD+ VCC RXDD[5] RXDD[0] GND TXCLKO+ N/C TXCLKA TXPERA GND TXDA[0] TXDA[5] VCC TXCTA[1] RXCLKA+ RXDA[6] RXDA[5] Signal Type LVTTL OUT LVTTL IN LVTTL IN LVTTL OUT LVTTL OUT POWER LVTTL OUT LVTTL OUT GROUND LVTTL OUT LVTTL IN PU LVTTL IN PU LVTTL IN PD GROUND LVTTL IN LVTTL IN POWER LVTTL OUT LVTTL OUT LVTTL OUT LVTTL OUT LVTTL IN LVTTL IN LVTTL OUT LVTTL I/O PD POWER LVTTL OUT LVTTL OUT GROUND LVTTL OUT NO CONNECT LVTTL IN PD LVTTL OUT GROUND LVTTL IN LVTTL IN POWER LVTTL IN LVTTL I/O PD LVTTL OUT LVTTL OUT Document #: 38-02002 Rev. *K Page 43 of 53 CYP15G0401DXB CYV15G0401DXB X3.230 Codes and Notation Conventions Information to be transmitted over a serial link is encoded eight bits at a time into a 10-bit Transmission Character and then sent serially, bit by bit. Information received over a serial link is collected ten bits at a time, and those Transmission Characters that are used for data characters are decoded into the correct eight-bit codes. The 10-bit Transmission Code supports all 256 eight-bit combinations. Some of the remaining Transmission Characters (Special Characters) are used for functions other than data transmission. The primary use of a Transmission Code is to improve the transmission characteristics of a serial link. The encoding defined by the Transmission Code ensures that sufficient transitions are present in the serial bit stream to make clock recovery possible at the Receiver. Such encoding also greatly increases the likelihood of detecting any single or multiple bit errors that may occur during transmission and reception of information. In addition, some Special Characters of the Transmission Code selected by Fibre Channel Standard contain a distinct and easily recognizable bit pattern that assists the receiver in achieving character alignment on the incoming bit stream. Notation Conventions The documentation for the 8B/10B Transmission Code uses letter notation for the bits in an eight-bit byte. Fibre Channel Standard notation uses a bit notation of A, B, C, D, E, F, G, H for the eight-bit byte for the raw eight-bit data, and the letters a, b, c, d, e, i, f, g, h, j for encoded 10-bit data. There is a correspondence between bit A and bit a, B and b, C and c, D and d, E and e, F and f, G and g, and H and h. Bits i and j are derived, respectively, from (A,B,C,D,E) and (F,G,H). The bit labeled A in the description of the 8B/10B Transmission Code corresponds to bit 0 in the numbering scheme of the FC-2 specification, B corresponds to bit 1, as shown below. FC-2 bit designation 76543210 HOTLink D/Q designation 7 6 5 4 3 2 1 0 8B/10B bit designation HGFEDCBA To clarify this correspondence, the following example shows the conversion from an FC-2 Valid Data Byte to a Transmission Character. FC-2 45H Bits: 7654 3210 0100 0101 Converted to 8B/10B notation, note that the order of bits has been reversed): Data Byte Name D5.2 Bits: ABCDE FGH 10100 010 Translated to a transmission Character in the 8B/10B Transmission Code: Bits: abcdei fghj 101001 0101 Each valid Transmission Character of the 8B/10B Transmission Code has been given a name using the following convention: cxx.y, where c is used to show whether the Transmission Character is a Data Character (c is set to D, and SC/D = LOW) or a Special Character (c is set to K, and SC/D = HIGH). When c is set to D, xx is the decimal value of the binary number Document #: 38-02002 Rev. *K composed of the bits E, D, C, B, and A in that order, and the y is the decimal value of the binary number composed of the bits H, G, and F in that order. When c is set to K, xx and y are derived by comparing the encoded bit patterns of the Special Character to those patterns derived from encoded Valid Data bytes and selecting the names of the patterns most similar to the encoded bit patterns of the Special Character. Under the above conventions, the Transmission Character used for the examples above, is referred to by the name D5.2. The Special Character K29.7 is so named because the first six bits (abcdei) of this character make up a bit pattern similar to that resulting from the encoding of the unencoded 11101 pattern (29), and because the second four bits (fghj) make up a bit pattern similar to that resulting from the encoding of the unencoded 111 pattern (7). This definition of the 10-bit Transmission Code is based on the following references. A.X. Widmer and P.A. Franaszek. A DC-Balanced, Partitioned-Block, 8B/10B Transmission Code IBM Journal of Research and Development, 27, No. 5: 440-451 (September, 1983). U.S. Patent 4,486,739. Peter A. Franaszek and Albert X. Widmer. Byte-Oriented DC Balanced (0.4) 8B/10B Partitioned Block Transmission Code (December 4, 1984). Fibre Channel Physical and Signaling Interface (ANS X3.230-1994 ANSI FC-PH Standard). IBM Enterprise Systems Architecture/390 ESCON I/O Interface (document number SA22-7202). 8B/10B Transmission Code The following information describes how the tables are used for both generating valid Transmission Characters (encoding) and checking the validity of received Transmission Characters (decoding). It also specifies the ordering rules to be followed when transmitting the bits within a character and the characters within any higher-level constructs specified by a standard. Transmission Order Within the definition of the 8B/10B Transmission Code, the bit positions of the Transmission Characters are labeled a, b, c, d, e, i, f, g, h, j. Bit a is transmitted first followed by bits b, c, d, e, i, f, g, h, and j in that order. Note that bit i is transmitted between bit e and bit f, rather than in alphabetical order. Valid and Invalid Transmission Characters The following tables define the valid Data Characters and valid Special Characters (K characters), respectively. The tables are used for both generating valid Transmission Characters and checking the validity of received Transmission Characters. In the tables, each Valid-Data-byte or Special-Character-code entry has two columns that represent two Transmission Characters. The two columns correspond to the current value of the running disparity. Running disparity is a binary parameter with either a negative () or positive (+) value. After powering on, the Transmitter may assume either a positive or negative value for its initial running disparity. Upon transmission of any Transmission Character, the transmitter will select the proper version of the Transmission Character based on the current running disparity value, and the TransPage 44 of 53 CYP15G0401DXB CYV15G0401DXB mitter calculates a new value for its running disparity based on the contents of the transmitted character. Special Character codes C1.7 and C2.7 can be used to force the transmission of a specific Special Character with a specific running disparity as required for some special sequences in X3.230. After powering on, the Receiver may assume either a positive or negative value for its initial running disparity. Upon reception of any Transmission Character, the Receiver decides whether the Transmission Character is valid or invalid according to the following rules and tables and calculates a new value for its Running Disparity based on the contents of the received character. The following rules for running disparity are used to calculate the new running-disparity value for Transmission Characters that have been transmitted and received. Running disparity for a Transmission Character is calculated from sub-blocks, where the first six bits (abcdei) form one sub-block and the second four bits (fghj) form the other sub-block. Running disparity at the beginning of the six-bit sub-block is the running disparity at the end of the previous Transmission Character. Running disparity at the beginning of the four-bit sub-block is the running disparity at the end of the six-bit sub-block. Running disparity at the end of the Transmission Character is the running disparity at the end of the four-bit sub-block. Running disparity for the sub-blocks is calculated as follows: 1. Running disparity at the end of any sub-block is positive if the sub-block contains more ones than zeros. It is also positive at the end of the six-bit sub-block if the six-bit sub-block is 000111, and it is positive at the end of the four-bit sub-block if the four-bit sub-block is 0011. 2. Running disparity at the end of any sub-block is negative if the sub-block contains more zeros than ones. It is also negative at the end of the six-bit sub-block if the six-bit sub-block is 111000, and it is negative at the end of the six-bit sub-block if the four-bit sub-block is 1100. 3. Otherwise, running disparity at the end of the sub-block is the same as at the beginning of the sub-block. Use of the Tables for Generating Transmission Characters The appropriate entry in Table 26 for the Valid Data byte or Table 27 for Special Character byte identify which Transmission Character is to be generated. The current value of the Transmitters running disparity is used to select the Transmission Character from its corresponding column. For each Transmission Character transmitted, a new value of the running disparity is calculated. This new value is used as the Transmitters current running disparity for the next Valid Data Table 25. Code Violations Resulting from Prior Errors RD Transmitted data character Transmitted bit stream Bit stream after error Decoded data character Character D21.1 101010 1001 101010 1011 D21.0 RD + + Character D10.2 010101 0101 010101 0101 D10.2 RD + + Character D23.5 111010 1010 111010 1010 Code Violation RD + + + + byte or Special Character byte to be encoded and transmitted. Table 24 shows naming notations and examples of valid transmission characters. Use of the Tables for Checking the Validity of Received Transmission Characters The column corresponding to the current value of the Receivers running disparity is searched for the received Transmission Character. If the received Transmission Character is found in the proper column, then the Transmission Character is valid and the associated Data byte or Special Character code is determined (decoded). If the received Transmission Character is not found in that column, then the Transmission Character is invalid. This is called a code violation. Independent of the Transmission Characters validity, the received Transmission Character is used to calculate a new value of running disparity. The new value is used as the Receivers current running disparity for the next received Transmission Character. Table 24. Valid Transmission Characters Data Byte Name D0.0 D1.0 D2.0 . . D5.2 . . D30.7 D31.7 765 DIN or QOUT 43210 Hex Value 00 01 02 . . 45 . . FE FF 000 000 000 . . 010 . . 111 111 00000 00001 00010 . . 00101 . . 11110 11111 Detection of a code violation does not necessarily show that the Transmission Character in which the code violation was detected is in error. Code violations may result from a prior error that altered the running disparity of the bit stream which did not result in a detectable error at the Transmission Character in which the error occurred. Table 25 shows an example of this behavior. Document #: 38-02002 Rev. *K Page 45 of 53 CYP15G0401DXB CYV15G0401DXB Table 26. Valid Data Characters (TXCTx[0] = 0, RXSTx[2:0] = 000) Data Byte Name D0.0 D1.0 D2.0 D3.0 D4.0 D5.0 D6.0 D7.0 D8.0 D9.0 D10.0 D11.0 D12.0 D13.0 D14.0 D15.0 D16.0 D17.0 D18.0 D19.0 D20.0 D21.0 D22.0 D23.0 D24.0 D25.0 D26.0 D27.0 D28.0 D29.0 D30.0 D31.0 Bits HGF EDCBA 000 00000 000 00001 000 00010 000 00011 000 00100 000 00101 000 00110 000 00111 000 01000 000 01001 000 01010 000 01011 000 01100 000 01101 000 01110 000 01111 000 10000 000 10001 000 10010 000 10011 000 10100 000 10101 000 10110 000 10111 000 11000 000 11001 000 11010 000 11011 000 11100 000 11101 000 11110 000 11111 Current RD abcdei fghj 100111 0100 011101 0100 101101 0100 110001 1011 110101 0100 101001 1011 011001 1011 111000 1011 111001 0100 100101 1011 010101 1011 110100 1011 001101 1011 101100 1011 011100 1011 010111 0100 011011 0100 100011 1011 010011 1011 110010 1011 001011 1011 101010 1011 011010 1011 111010 0100 110011 0100 100110 1011 010110 1011 110110 0100 001110 1011 101110 0100 011110 0100 101011 0100 Current RD+ abcdei fghj 011000 1011 100010 1011 010010 1011 110001 0100 001010 1011 101001 0100 011001 0100 000111 0100 000110 1011 100101 0100 010101 0100 110100 0100 001101 0100 101100 0100 011100 0100 101000 1011 100100 1011 100011 0100 010011 0100 110010 0100 001011 0100 101010 0100 011010 0100 000101 1011 001100 1011 100110 0100 010110 0100 001001 1011 001110 0100 010001 1011 100001 1011 010100 1011 Data Byte Name D0.1 D1.1 D2.1 D3.1 D4.1 D5.1 D6.1 D7.1 D8.1 D9.1 D10.1 D11.1 D12.1 D13.1 D14.1 D15.1 D16.1 D17.1 D18.1 D19.1 D20.1 D21.1 D22.1 D23.1 D24.1 D25.1 D26.1 D27.1 D28.1 D29.1 D30.1 D31.1 Bits HGF EDCBA 001 00000 001 00001 001 00010 001 00011 001 00100 001 00101 001 00110 001 00111 001 01000 001 01001 001 01010 001 01011 001 01100 001 01101 001 01110 001 01111 001 10000 001 10001 001 10010 001 10011 001 10100 001 10101 001 10110 001 10111 001 11000 001 11001 001 11010 001 11011 001 11100 001 11101 001 11110 001 11111 Current RD abcdei fghj 100111 1001 011101 1001 101101 1001 110001 1001 110101 1001 101001 1001 011001 1001 111000 1001 111001 1001 100101 1001 010101 1001 110100 1001 001101 1001 101100 1001 011100 1001 010111 1001 011011 1001 100011 1001 010011 1001 110010 1001 001011 1001 101010 1001 011010 1001 111010 1001 110011 1001 100110 1001 010110 1001 110110 1001 001110 1001 101110 1001 011110 1001 101011 1001 Current RD+ abcdei fghj 011000 1001 100010 1001 010010 1001 110001 1001 001010 1001 101001 1001 011001 1001 000111 1001 000110 1001 100101 1001 010101 1001 110100 1001 001101 1001 101100 1001 011100 1001 101000 1001 100100 1001 100011 1001 010011 1001 110010 1001 001011 1001 101010 1001 011010 1001 000101 1001 001100 1001 100110 1001 010110 1001 001001 1001 001110 1001 010001 1001 100001 1001 010100 1001 Document #: 38-02002 Rev. *K Page 46 of 53 CYP15G0401DXB CYV15G0401DXB Table 26. Valid Data Characters (TXCTx[0] = 0, RXSTx[2:0] = 000) (continued) Data Byte Name D0.2 D1.2 D2.2 D3.2 D4.2 D5.2 D6.2 D7.2 D8.2 D9.2 D10.2 D11.2 D12.2 D13.2 D14.2 D15.2 D16.2 D17.2 D18.2 D19.2 D20.2 D21.2 D22.2 D23.2 D24.2 D25.2 D26.2 D27.2 D28.2 D29.2 D30.2 D31.2 D0.4 Bits HGF EDCBA 010 00000 010 00001 010 00010 010 00011 010 00100 010 00101 010 00110 010 00111 010 01000 010 01001 010 01010 010 01011 010 01100 010 01101 010 01110 010 01111 010 10000 010 10001 010 10010 010 10011 010 10100 010 10101 010 10110 010 10111 010 11000 010 11001 010 11010 010 11011 010 11100 010 11101 010 11110 010 11111 100 00000 Current RD abcdei fghj 100111 0101 011101 0101 101101 0101 110001 0101 110101 0101 101001 0101 011001 0101 111000 0101 111001 0101 100101 0101 010101 0101 110100 0101 001101 0101 101100 0101 011100 0101 010111 0101 011011 0101 100011 0101 010011 0101 110010 0101 001011 0101 101010 0101 011010 0101 111010 0101 110011 0101 100110 0101 010110 0101 110110 0101 001110 0101 101110 0101 011110 0101 101011 0101 100111 0010 Current RD+ abcdei fghj 011000 0101 100010 0101 010010 0101 110001 0101 001010 0101 101001 0101 011001 0101 000111 0101 000110 0101 100101 0101 010101 0101 110100 0101 001101 0101 101100 0101 011100 0101 101000 0101 100100 0101 100011 0101 010011 0101 110010 0101 001011 0101 101010 0101 011010 0101 000101 0101 001100 0101 100110 0101 010110 0101 001001 0101 001110 0101 010001 0101 100001 0101 010100 0101 011000 1101 Data Byte Name D0.3 D1.3 D2.3 D3.3 D4.3 D5.3 D6.3 D7.3 D8.3 D9.3 D10.3 D11.3 D12.3 D13.3 D14.3 D15.3 D16.3 D17.3 D18.3 D19.3 D20.3 D21.3 D22.3 D23.3 D24.3 D25.3 D26.3 D27.3 D28.3 D29.3 D30.3 D31.3 D0.5 Bits HGF EDCBA 011 00000 011 00001 011 00010 011 00011 011 00100 011 00101 011 00110 011 00111 011 01000 011 01001 011 01010 011 01011 011 01100 011 01101 011 01110 011 01111 011 10000 011 10001 011 10010 011 10011 011 10100 011 10101 011 10110 011 10111 011 11000 011 11001 011 11010 011 11011 011 11100 011 11101 011 11110 011 11111 101 00000 Current RD abcdei fghj 100111 0011 011101 0011 101101 0011 110001 1100 110101 0011 101001 1100 011001 1100 111000 1100 111001 0011 100101 1100 010101 1100 110100 1100 001101 1100 101100 1100 011100 1100 010111 0011 011011 0011 100011 1100 010011 1100 110010 1100 001011 1100 101010 1100 011010 1100 111010 0011 110011 0011 100110 1100 010110 1100 110110 0011 001110 1100 101110 0011 011110 0011 101011 0011 100111 1010 Current RD+ abcdei fghj 011000 1100 100010 1100 010010 1100 110001 0011 001010 1100 101001 0011 011001 0011 000111 0011 000110 1100 100101 0011 010101 0011 110100 0011 001101 0011 101100 0011 011100 0011 101000 1100 100100 1100 100011 0011 010011 0011 110010 0011 001011 0011 101010 0011 011010 0011 000101 1100 001100 1100 100110 0011 010110 0011 001001 1100 001110 0011 010001 1100 100001 1100 010100 1100 011000 1010 Page 47 of 53 Document #: 38-02002 Rev. *K CYP15G0401DXB CYV15G0401DXB Table 26. Valid Data Characters (TXCTx[0] = 0, RXSTx[2:0] = 000) (continued) Data Byte Name D1.4 D2.4 D3.4 D4.4 D5.4 D6.4 D7.4 D8.4 D9.4 D10.4 D11.4 D12.4 D13.4 D14.4 D15.4 D16.4 D17.4 D18.4 D19.4 D20.4 D21.4 D22.4 D23.4 D24.4 D25.4 D26.4 D27.4 D28.4 D29.4 D30.4 D31.4 Bits HGF EDCBA 100 00001 100 00010 100 00011 100 00100 100 00101 100 00110 100 00111 100 01000 100 01001 100 01010 100 01011 100 01100 100 01101 100 01110 100 01111 100 10000 100 10001 100 10010 100 10011 100 10100 100 10101 100 10110 100 10111 100 11000 100 11001 100 11010 100 11011 100 11100 100 11101 100 11110 100 11111 Current RD abcdei fghj 011101 0010 101101 0010 110001 1101 110101 0010 101001 1101 011001 1101 111000 1101 111001 0010 100101 1101 010101 1101 110100 1101 001101 1101 101100 1101 011100 1101 010111 0010 011011 0010 100011 1101 010011 1101 110010 1101 001011 1101 101010 1101 011010 1101 111010 0010 110011 0010 100110 1101 010110 1101 110110 0010 001110 1101 101110 0010 011110 0010 101011 0010 Current RD+ abcdei fghj 100010 1101 010010 1101 110001 0010 001010 1101 101001 0010 011001 0010 000111 0010 000110 1101 100101 0010 010101 0010 110100 0010 001101 0010 101100 0010 011100 0010 101000 1101 100100 1101 100011 0010 010011 0010 110010 0010 001011 0010 101010 0010 011010 0010 000101 1101 001100 1101 100110 0010 010110 0010 001001 1101 001110 0010 010001 1101 100001 1101 010100 1101 Data Byte Name D1.5 D2.5 D3.5 D4.5 D5.5 D6.5 D7.5 D8.5 D9.5 D10.5 D11.5 D12.5 D13.5 D14.5 D15.5 D16.5 D17.5 D18.5 D19.5 D20.5 D21.5 D22.5 D23.5 D24.5 D25.5 D26.5 D27.5 D28.5 D29.5 D30.5 D31.5 Bits HGF EDCBA 101 00001 101 00010 101 00011 101 00100 101 00101 101 00110 101 00111 101 01000 101 01001 101 01010 101 01011 101 01100 101 01101 101 01110 101 01111 101 10000 101 10001 101 10010 101 10011 101 10100 101 10101 101 10110 101 10111 101 11000 101 11001 101 11010 101 11011 101 11100 101 11101 101 11110 101 11111 Current RD abcdei fghj 011101 1010 101101 1010 110001 1010 110101 1010 101001 1010 011001 1010 111000 1010 111001 1010 100101 1010 010101 1010 110100 1010 001101 1010 101100 1010 011100 1010 010111 1010 011011 1010 100011 1010 010011 1010 110010 1010 001011 1010 101010 1010 011010 1010 111010 1010 110011 1010 100110 1010 010110 1010 110110 1010 001110 1010 101110 1010 011110 1010 101011 1010 Current RD+ abcdei fghj 100010 1010 010010 1010 110001 1010 001010 1010 101001 1010 011001 1010 000111 1010 000110 1010 100101 1010 010101 1010 110100 1010 001101 1010 101100 1010 011100 1010 101000 1010 100100 1010 100011 1010 010011 1010 110010 1010 001011 1010 101010 1010 011010 1010 000101 1010 001100 1010 100110 1010 010110 1010 001001 1010 001110 1010 010001 1010 100001 1010 010100 1010 Document #: 38-02002 Rev. *K Page 48 of 53 CYP15G0401DXB CYV15G0401DXB Table 26. Valid Data Characters (TXCTx[0] = 0, RXSTx[2:0] = 000) (continued) Data Byte Name D0.6 D1.6 D2.6 D3.6 D4.6 D5.6 D6.6 D7.6 D8.6 D9.6 D10.6 D11.6 D12.6 D13.6 D14.6 D15.6 D16.6 D17.6 D18.6 D19.6 D20.6 D21.6 D22.6 D23.6 D24.6 D25.6 D26.6 D27.6 D28.6 D29.6 D30.6 D31.6 Bits HGF EDCBA 110 00000 110 00001 110 00010 110 00011 110 00100 110 00101 110 00110 110 00111 110 01000 110 01001 110 01010 110 01011 110 01100 110 01101 110 01110 110 01111 110 10000 110 10001 110 10010 110 10011 110 10100 110 10101 110 10110 110 10111 110 11000 110 11001 110 11010 110 11011 110 11100 110 11101 110 11110 110 11111 Current RD abcdei fghj 100111 0110 011101 0110 101101 0110 110001 0110 110101 0110 101001 0110 011001 0110 111000 0110 111001 0110 100101 0110 010101 0110 110100 0110 001101 0110 101100 0110 011100 0110 010111 0110 011011 0110 100011 0110 010011 0110 110010 0110 001011 0110 101010 0110 011010 0110 111010 0110 110011 0110 100110 0110 010110 0110 110110 0110 001110 0110 101110 0110 011110 0110 101011 0110 Current RD+ abcdei fghj 011000 0110 100010 0110 010010 0110 110001 0110 001010 0110 101001 0110 011001 0110 000111 0110 000110 0110 100101 0110 010101 0110 110100 0110 001101 0110 101100 0110 011100 0110 101000 0110 100100 0110 100011 0110 010011 0110 110010 0110 001011 0110 101010 0110 011010 0110 000101 0110 001100 0110 100110 0110 010110 0110 001001 0110 001110 0110 010001 0110 100001 0110 010100 0110 Data Byte Name D0.7 D1.7 D2.7 D3.7 D4.7 D5.7 D6.7 D7.7 D8.7 D9.7 D10.7 D11.7 D12.7 D13.7 D14.7 D15.7 D16.7 D17.7 D18.7 D19.7 D20.7 D21.7 D22.7 D23.7 D24.7 D25.7 D26.7 D27.7 D28.7 D29.7 D30.7 D31.7 Bits HGF EDCBA 111 00000 111 00001 111 00010 111 00011 111 00100 111 00101 111 00110 111 00111 111 01000 111 01001 111 01010 111 01011 111 01100 111 01101 111 01110 111 01111 111 10000 111 10001 111 10010 111 10011 111 10100 111 10101 111 10110 111 10111 111 11000 111 11001 111 11010 111 11011 111 11100 111 11101 111 11110 111 11111 Current RD abcdei fghj 100111 0001 011101 0001 101101 0001 110001 1110 110101 0001 101001 1110 011001 1110 111000 1110 111001 0001 100101 1110 010101 1110 110100 1110 001101 1110 101100 1110 011100 1110 010111 0001 011011 0001 100011 0111 010011 0111 110010 1110 001011 0111 101010 1110 011010 1110 111010 0001 110011 0001 100110 1110 010110 1110 110110 0001 001110 1110 101110 0001 011110 0001 101011 0001 Current RD+ abcdei fghj 011000 1110 100010 1110 010010 1110 110001 0001 001010 1110 101001 0001 011001 0001 000111 0001 000110 1110 100101 0001 010101 0001 110100 1000 001101 0001 101100 1000 011100 1000 101000 1110 100100 1110 100011 0001 010011 0001 110010 0001 001011 0001 101010 0001 011010 0001 000101 1110 001100 1110 100110 0001 010110 0001 001001 1110 001110 0001 010001 1110 100001 1110 010100 1110 Document #: 38-02002 Rev. *K Page 49 of 53 CYP15G0401DXB CYV15G0401DXB Table 27. Valid Special Character Codes and Sequences (TXCTx = special character code or RXSTx[2:0] = 001) [45, 46] S.C. Byte Name Cypress S.C. Code Name K28.0 K28.1 [48] K28.2 [48] K28.3 K28.4 [48] K28.6 [48] K23.7 K27.7 K29.7 K30.7 EOFxx [51] S.C. Byte Name [47] C0.0 C1.0 C2.0 C3.0 C4.0 C5.0 C6.0 C7.0 C8.0 C9.0 C10.0 C11.0 C2.1 C0.7 C1.7 C2.7 C4.7 (C00) (C01) (C02) (C03) (C04) (C05) (C06) (C07) (C08) (C09) (C0A) (C0B) (C22) (CE0) (CE1) (CE2) (CE4) Alternate Bits HGF EDCBA 000 11100 001 11100 010 11100 011 11100 100 11100 101 11100 110 11100 111 11100 111 10111 111 11011 111 11101 111 11110 001 00010 111 00000[56] 111 00001[56] 111 00010[56] 111 00100[56] Current RD abcdei fghj 001111 0100 001111 1001 001111 0101 001111 0011 001111 0010 001111 1010 001111 0110 001111 1000 111010 1000 110110 1000 101110 1000 011110 1000 K28.5, Dn.xxx0 100111 1000 001111 1010 110000 0101 110111 0101 Current RD+ abcdei fghj 110000 1011 110000 0110 110000 1010 110000 1100 110000 1101 110000 0101 110000 1001 110000 0111 000101 0111 001001 0111 010001 0111 100001 0111 +K28.5, Dn.xxx1 011000 0111 001111 1010 110000 0101 001000 1010 Bits S.C. Byte Name [47] HGF EDCBA 000 00000 000 00001 000 00010 000 00011 000 00100 000 00101 000 00110 000 00111 000 01000 000 01001 000 01010 000 01011 001 00010 111 00000 111 00001 111 00010 111 00100 C28.0 C28.1 C28.2 C28.3 C28.4 C28.5 C28.6 C28.7 C23.7 C27.7 C29.7 C30.7 C2.1 C0.7 C1.7 C2.7 C4.7 (C1C) (C3C) (C5C) (C7C) (C9C) (CBC) (CDC) (CFC) (CF7) (CFB) (CFD) (CFE) (C22) (CE0) (CE1) (CE2) (CE4) K28.5 [48, 49] K28.7 [48, 50] End of Frame Sequence Code Rule Violation and SVS Tx Pattern K28.5 [53] Exception[50, 52] +K28.5[54] Exception[55] Running Disparity Violation Pattern Notes: 45. All codes not shown are reserved. 46. Notation for Special Character Code Name is consistent with Fibre Channel and ESCON naming conventions. Special Character Code Name is intended to describe binary information present on I/O pins. Common usage for the name can either be in the form used for describing Data patterns (i.e., C0.0 through C31.7), or in hex notation (i.e., Cnn where nn = the specified value between 00 and FF). 47. Both the Cypress and alternate encodings may be used for data transmission to generate specific Special Character Codes. The decoding process for received characters generates Cypress codes or Alternate codes as selected by the DECMODE configuration input. 48. These characters are used for control of ESCON interfaces. They can be sent as embedded commands or other markers when not operating using ESCON protocols. 49. The K28.5 character is used for framing operations by the receiver. It is also the pad or fill character transmitted to maintain the serial link when no user data is available. 50. Care must be taken when using this Special Character code. When a K28.7(C7.0) or SVS(C0.7) is followed by a D11.x or D20.x, an alias K28.5 sync character is created. These sequences can cause erroneous framing and should be avoided while RFEN = HIGH. 51. C2.1 = Transmit either K28.5+ or +K28.5 as determined by Current RD and modify the Transmission Character that follows, by setting its least significant bit to 1 or 0. If Current RD at the start of the following character is plus (+) the LSB is set to 0, and if Current RD is minus ( ) the LSB becomes 1. This modification allows construction of X3.230 EOF frame delimiters wherein the second data byte is determined by the Current RD. For example, to send EOFdt the controller could issue the sequence C2.1 D21.4 D21.4 D21.4, and the HOTLink IITransmitter will send either K28.5 D21.4 D21.4 D21.4 or K28.5 D21.5 D21.4 D21.4 based on Current RD. Likewise to send EOFdti the controller could issue the sequence C2.1 D10.4 D21.4 D21.4, and the HOTLink II Transmitter will send either K28.5 D10.4 D21.4 D21.4 or K28.5 D10.5 D21.4 D21.4 based on Current RD. The receiver will never output this Special Character, since K28.5 is decoded as C5.0, C1.7, or C2.7, and the subsequent bytes are decoded as data. 52. C0.7 = Transmit a deliberate code rule violation. The code chosen for this function follows the normal Running Disparity rules. The receiver will only output this Special Character if the Transmission Character being decoded is not found in the tables. 53. C1.7 = Transmit Negative K28.5 ( K28.5+) disregarding Current RD. The receiver will only output this Special Character if K28.5 is received with the wrong running disparity. The receiver will output C1.7 if K28.5 is received with RD+, otherwise K28.5 is decoded as C5.0 or C2.7. 54. C2.7 = Transmit Positive K28.5 (+K28.5 ) disregarding Current RD. The receiver will only output this Special Character if K28.5 is received with the wrong running disparity. The receiver will output C2.7 if +K28.5 is received with RD , otherwise K28.5 is decoded as C5.0 or C1.7. 55. C4.7 = Transmit a deliberate code rule violation to indicate a Running Disparity violation. The receiver will only output this Special Character if the Transmission Character being decoded is found in the tables, but Running Disparity does not match. This might indicate that an error occurred in a prior byte. 56. Supported only for data transmission. The receive status for these conditions will be reported by specific combinations of receive status bits. Document #: 38-02002 Rev. *K Page 50 of 53 CYP15G0401DXB CYV15G0401DXB Ordering Information Speed Standard Standard Standard Standard Ordering Code CYP15G0401DXB-BGC CYP15G0401DXB-BGI CYV15G0401DXB-BGC CYV15G0401DXB-BGI Package Name BL256 BL256 BL256 BL256 Package Type 256-ball Thermally Enhanced Ball Grid Array 256-ball Thermally Enhanced Ball Grid Array 256-ball Thermally Enhanced Ball Grid Array 256-ball Thermally Enhanced Ball Grid Array Operating Range Commercial Industrial Commercial Industrial Package Diagram 256-Lead L2 Ball Grid Array (27 x 27 x 1.57 mm) BL256 IN ExUE ieoooii i YNIOUI xoUo oioiE/ Hoie O Y Hoi O Y HoeeooieoieeE/ i ic ie ie ie ie ii ii ii ii i c e e e e i i i i Y U U U U O O O O O O I I E E E C NIINO ExUE oOO IxUU/ iioii i YNIOUI xoUo I ioe O oiE/ ieoooii iioee ioie ioeeooiee oce IUUo oie Y oe OxOo oeooi Y iep ICo IUIxOU OOU oie Y oi OxO IN NU ONOU YNONEOU IN IN NU OOI IxUU ExUE 51-85123-*E HOTLink is a registered trademark, and HOTLink II, and MultiFrame are trademarks, of Cypress Semiconductor. IBM and ESCON are registered trademarks, and FICON is a trademark, of International Business Machines. All product and company names mentioned in this document are the trademarks of their respective holders. Document #: 38-02002 Rev. *K (c) Cypress Semiconductor Corporation, 2004. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. Page 51 of 53 iioii CYP15G0401DXB CYV15G0401DXB Document History Page Document Title: CYP(V)15G0401DXB Quad HOTLink II Transceiver Document Number: 38-02002 REV. ** *A *B *C ECN No. Issue Date Orig. of Change SZV AMV TME TPS Description of Change Change from Spec number: 38-00876 to 38-02002 Changed Marketing part number Change Marketing part number from CYP15G0401DX to CYP15G0401 Changed common mode input information and duty cycle of transmit clocks Updated max voltage power and release under ecn control Changed the wording of REFCLK input coupling on both inputs for LVTTL clock input Addition of TXCLKO+ and the TXCLKO+ specs Changed the TXCLKO clock output to refect the new timing Changed the Half Clock drawing so that the viald time was at clock edges Changed the input power Changed the spec for the serial output levels at the different terminations Changed the common mode input range of the serial input Increased the Serial input current under the conditions of VCC and min Added to the Duty cycle of the transmit and receiver clock signals The rise time of the serial inputs and receiver were changed The half rate timing drawing changed from not valid at clock edges to viald at clock edges Added new timing line for status valid time of half clock signals Max voltage reduced from 4.2V to 3.8V Matched the common specs with the family of parts Changed many names from lower case to upper case Changed in five places = to Changed the power to typical to 2.8W Added Escon, DVB-ASI, SMPTE to features Under PARCTL control reworded statement When HIGH Under RXLE Reworded and reformatted the text Under BOND_ALL added when bonding resolution is completed Removed repeated information in Power Control section Corrected statement for bonded BIST Changed TXCLKO description Changed TXPERx description Changed typical power from 2.8W to 2.9W Removed the LOW setting for FRAMCHAR and related references Changed VODIF and VOLC for CML output Changed the IOST boundary values Changed the tTXCLKR and tTXCLKF min. values Changed tTXDS & tTXDH and tTREFDS & tTREFDH Changed tREFADV and tREFCDV Changed the JTAG ID from 0C800069 to 1C800069 Changed Minimum tRISE/tFALL for CML Changed tRXLOCK Changed tDJ, tRJ Changed tJTOL Changed tTXLOCK Changed tRXCLKH, tRXCLKL Changed tTXCLKOD+, tTXCLKOD Changed Power Specs Changed verbiage...Paragraph: Clock/Data Recovery Changed verbiage...Paragraph: Range Control Added Power-up Requirements Changed CYP15G0401DXB to CYP(V)15G0401DXB to abbreviate title. Type corresponding to the Video compliant parts Reduced the lower limit of the serial signaling rate from 200 Mbaud to 195 Mbaud and changed the associated specifications accordingly Added CYPV15G0401DXB to title 105840 03/21/01 108025 06/20/01 108437 07/19/01 112986 11/12/01 *D 2/26/02 TPS *E 118650 09/30/02 LNM *F 121906 02/12/03 CGX *G 124996 03/21/03 POT Document #: 38-02002 Rev. *K Page 52 of 53 CYP15G0401DXB CYV15G0401DXB Document History Page (continued) Document Title: CYP(V)15G0401DXB Quad HOTLink II Transceiver Document Number: 38-02002 REV. *H *I *J ECN No. 126908 128365 Issue Date 5/12/03 7/23/03 Orig. of Change KKV PDS PDS Description of Change Corrected footnote 1 Implemented corrections to table format Revised the value of tRREFDV, tREFADV+ and tREFCDV+ When TXCKSEL = MID or HIGH, TXRATE = HIGH is an invalid mode. Made appropriate changes to reflect this invalid condition. Removed requirement of AC coupling for Serial I/Os for interfacing with LVPECL I/Os. Changed LFIx to Asynchronous output. Expanded the CDR Range Controllers permissible frequency offset between incoming serial signalling rate and Reference clock from 200-PPM to 1500-PPM (changed parameter tREFRX). Added Table for RXSTx[2:0] status for non-bonded (Independent Channel) mode of operation for clarity. Separated the Receive BIST status to a new Table for clarity. Revised Typical Power numbers to match final characterization data. Minor change: package diagram disappeared from online pdf 131897 12/10/03 *K 211429 See ECN KKV Document #: 38-02002 Rev. *K Page 53 of 53 |
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