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cyp15g0101dxb cyv15g0101dxb single-channel hotlink ii? transceiver cypress semiconductor corporation ? 198 champion court ? san jose , ca 95134-1709 ? 408-943-2600 document number: 38-02031 rev. *n revised april 17, 2012 single-channel hotlink ii? transceiver features second-generation hotlink ? technology compliant to multiple standards ? escon ? , dvb-asi, fibre channel and gigabit ethernet (ieee802.3z) ? cpri? compliant ? cyv15g0101dxb compliant to smpte 259m and smpte 292m ? 8b/10b encoded or 10-bit unencoded data single-channel transceiver operates from 195 to 1500 mbaud serial data rate selectable parity check/generate selectable input clocking options selectable 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 input and parallel output interface internal phase-locked loops (plls) with no external pll components dual differential pecl-compatible serial inputs ? internal dc-restoration dual differential pecl-compatible serial outputs ? source matched for driving 50 ? transmission lines ? no external bias resistors required ? signaling-rate controlled edge-rates optional elasticity buffer in receive path optional phase align buffer in transmit path 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 1.25 w at 3.3 v typical single 3.3 v supply 100-ball bga pb-free package option available 0.25 bicmos technology functional description the cyp15g0101dxb [1] single-channel hotlink ii? transceiver is a point-to-point communications building block allowing the transfer of data over a high-speed serial link (optical fiber, balanced, and unbalanced copper transmission lines) at signaling speeds ranging from 195 to 1500 mbaud. the transmit channel accepts parallel characters in an input register, encodes each character for transport, and converts it to serial data. the receive channel accepts serial data and converts it to parallel data, frames t he data to character boundaries, decodes the framed characters into data and special characters, and presents these characters to an output register. figure 1 illustrates typical connections between independent host systems and corresponding cyp( v)15g0101dxb parts. as a second-generation hotlink device, the cyp(v)15g0101dxb extends the hotlink ii family with enhanced levels of integration and faster data rates, while maintaining serial-link compatibility (data, command, and bist) with other hotlink devices. 10 10 10 10 serial link cyp(v)15g0101dxb system host system host backplane or cabled connections figure 1. hotlink ii system connections cyp(v)15g0101dxb note 1. cyv15g0101dxb refers to smpte 259m and smpte 292m compliant devic es. cyp15g0101dxb refers to devices not compliant to smpte 2 59m and smpte 292m pathological test requirements. cyp(v)15g0101dxb refers both devices.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 2 of 43 the cyv15g0101dxb satisfies the smpte 259m and smpte 292m compliance as per the eg34-1999 pathological test requirements. the transmit (tx) section of the cyp(v)15g0101dxb single-channel hotlink ii consists of a byte-wide channel. the 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)15g0101dxb single-channel hotlink ii consists of a byte-wide channel. the channel accepts a serial bit-stream from one of two pecl-compatible differential line receivers and, using a completely integrated pll clo ck synchronizer, recovers the timing information necessary for data reconstruction. the recovered bit-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. 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 interfaces from one or multiple sources, the receive interface may be configured to present data relative to a recovered clock or to a local reference clock. the transmit and the receive channels contain bist pattern generators and checkers, respectively. this bist hardware allows at-speed testing of the high-speed serial data paths in both transmit and receive sections, as well as 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 swit ches, routers, base-stations, servers and video transmission systems. the cyv15g0101dxb is verified by testing to be compliant to all the pathological test patterns documented in smpte eg34-1999, for both the smpt e 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. x10 serializer phase encoder 8b/10b decoder 8b/10b x11 framer deserializer tx rx txd[7:0] rxd[7:0] out ?? out2 ? in1 ? in2 ? align buffer elasticity buffer txct[1:0] rxst[2:0] transceiver logic block diagram
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 3 of 43 txrate character-rate clock bit-rate clock hml txclk 8 txct[1:0] txd[7:0] txop input register txper 2 phase-align buffer scsel 12 parity check bist lfsr 8b/10b 12 12 10 shifter out1+ out1? out2+ out2? txlb character-rate clock spdsel txrst txmode[1:0] parctl refclk+ refclk? transmit pll clock multiplier transmit mode txclko+ txclko? 2 logic block diagram bistle oele = internal signal bist enable latch output enable 4 2 latch txcksel in1+ in1? in2+ in2? insel txlb character-rate clock clock & data recovery pll shifter lpen lfi 8 rxst[2:0] rxd[7:0] rxop 3 receive signal monitor output register elasticity buffer 10b/8b bist framer rxclk+ rxclk? ? 2 framchar rfmode rfen rxmode sdasel jtag boundary scan controller tdo tms tclk tdi clock select rxrate trstz decmode rx pll enable latch rxle boe[1:0] rxcksel rxclkc+ delay
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 4 of 43 contents pin configuration ............................................................ 5 pin descriptions ............................................................... 6 cyp(v)15g0101dxb hotlink ii operation .................. 12 cyp(v)15g0101dxb transmit da ta path ................ 12 transmit modes ......................................................... 13 transmit bist ........................................................... 15 serial output drivers ................................................. 16 transmit pll clock multiplier .................................... 16 cyp(v)15g0101dxb receive data path ....................... 16 serial line receivers .......... ...................................... 16 signal detect/link fault ............................................ 17 clock/data recovery ................................................. 18 deserializer/framer ................................................... 18 10b/8b decoder block ........... .............. .............. ....... 19 receive bist operation ............................................ 19 receive elasticity buffer .... ........................................ 20 receive modes .......................................................... 20 power control ............................................................ 20 output bus ................................................................ 21 parity generation ...................................................... 22 jtag support ............................................................ 23 maximum ratings ........................................................... 25 power-up requirements ............................................ 25 dc electrical characteristics ........................................ 25 ac test loads and waveforms ..................................... 26 cyp(v)15g0101dxb ac characte ristics ........ .............. 27 switching waveforms for the hotlink ii transmitter . 29 x3.230 codes and notation conventions .................... 33 notation conventions ................................................ 33 8b/10b transmission code ....................................... 33 transmission order ................................................... 33 valid and invalid transmission characters ............... 33 use of the tables for generating transmission characters ........................................................................ 34 use of the tables for checking the validity of received transmission characte rs .................................. 34 ordering information ...................................................... 40 ordering code definitions ..... .................................... 40 package diagram ............................................................ 41 acronyms ........................................................................ 41 document conventions ................................................ 41 document history page ................................................. 42 sales, solutions, and legal information ...................... 43 worldwide sales and design s upport ......... .............. 43 products .................................................................... 43 psoc solutions ......................................................... 43
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 5 of 43 pin configuration top view 1 2 3 4 5 6 7 8 9 10 a v cc in2+ v cc out2? rxmode txmode[1] in1+ v cc out1? v cc b v cc in2? tdo out2+ txrate txmode[0] in1? #nc [2] out1+ v cc c rfen lpen rxle rxclkc+ rxrate sdasel spdsel parctl rfmode insel d boe[0] boe[1] framchar gnd gnd gnd gnd tms trstz tdi e bistle decmode oele gnd gnd gnd gnd tclk rxcksel txcksel f rxst[2] rxst[1] rxst[0] gnd gnd gnd gnd txper refclk? refclk+ g rxop rxd[1] rxd[5] gnd gnd gnd gnd txop txclko+ txclko? h rxd[0] rxd[2] rxd[6] lfi txct[1] txd[6] txd[3] txclk txrst #nc [2] j v cc rxd[3] rxd[7] rxclk? txct[0] txd[5] txd[2] txd[0] #nc [2] v cc k v cc rxd[4] v cc rxclk+ txd[7] txd[4] txd[1] v cc scsel v cc bottom view 10 9 8 7 6 5 4 3 2 1 v cc out1? v cc in1+ txmode[1] rxmode out2? v cc in2+ v cc a v cc out1+ #nc [2] in1? txmode[0] txrate out2+ tdo in2? v cc b insel rfmode parctl spdsel sdasel rxrate rxclkc+ rxle lpen rfen c tdi trstz tms gnd gnd gnd gnd framchar boe[1] boe[0] d txcksel rxcksel tclk gnd gnd gnd gnd oele decmode bistle e refclk+ refclk? txper gnd gnd gn d gnd rxst[0] rxst[1] rxst[2] f txclko? txclko+ txop gnd gnd gnd gnd rxd[5] rxd[1] rxop g #nc [2] txrst txclk txd[3] txd[6] txct[1] lfi rxd[6] rxd[2] rxd[0] h v cc #nc [2] txd[0] txd[2] txd[5] txct[0] rxclk? rxd[7] rxd[3] v cc j v cc scsel v cc txd[1] txd[4] txd[7] rxclk+ v cc rxd[4] v cc k note 2. #nc = do not connect.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 6 of 43 pin descriptions cyp(v)15g0101dxb single-channel hotlink ii pin name i/o characteristics signal description transmit path data signals txper lvttl output, changes relative to refclk ? [3] transmit path parity error . active high. asserted (high) if parity checking is enabled (parctl ? low) and a parity error is detected at the encoder. this output is high for one transmit character-clock period to indicate de tection of a parity error in the character presented to the encoder. if a parity error is detected, the character in e rror is replaced with a c0.7 character to force a corresponding bad-character detection at the re mote end of the link. this replacement takes place regardless of the encoded/un- encoded state of the interface. when bist is enabled for the specific transmi t channel, bist progress is presented on this output. once every 511 character times (plu s a 16-character word sync sequence when the receive channel is clocked by refclk, i.e., rxcksel = low), the txper signal pulses high for one transmit-character clo ck period (if rxcksel = mid) or seventeen transmit-character clock periods (if rxcksel = l ow or high) to indicate a complete pass through the bist sequence. for rxcksel = low or high, if txmode[1:0] = ll, then no word sync sequence is sent in bist, and t xper pulses high for one transmit-character clock period. this output also provides an indication of a phase-align buffer underflow/overflow condition. when the phase-align buffer is enabled (txcksel ? low, or txcksel = low and txrate = high), and an underflow/overflow condition is detected, txper is asserted and remains asserted until either an atomic wo rd sync sequence is transmitted or txrst is sampled low to recenter the phase-align buffer. txct[1:0] lvttl input, synchronous, sampled by txclk ? or refclk ? [3] transmit control . these inputs are captured on the rising edge of the transmit interface clock as selected by txcksel, and are passed to th e encoder or transmit shifter. they identify how the txd[7:0] characters are interpreted. when the encoder is enabled, these inputs determine if the txd[7:0] character is encoded as data, a special char acter code, a k28.5 fill character or a word sync sequence. when th e encoder is bypassed, these inputs are interpreted as data bits. see table 1 for details. txd[7:0] lvttl input, synchronous, sampled by txclk ? or refclk ? [3] transmit data inputs . these inputs are captured on the risi ng 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] ? low), txd[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. txop lvttl input, synchronous, internal pull-up, sampled by txclk ? or refclk ? [3] transmit path odd parity . when parity checking is enabled (parctl ? low), the parity captured at this input is xo red with the data on the txd bus (and sometimes txct[1:0]) to verify the integrity of the captured character. see table 2 for details. scsel lvttl input, synchronous, internal pull-down, sampled by txclk ? or refclk ? [3] 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 path is configured to select txclk to clock t he input register (txcksel = mid or high), scsel is captured relative to txclk ? . note 3. when refclk is configured for half-rate operation (txrate = high), this input is sampled (or the outputs change) relative to both the rising and falling edges of refclk.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 7 of 43 txrst lvttl input, asynchronous, internal pull-up, sampled by refclk ? [4] transmit clock phase reset . active low. when sampled low, the transmit phase-align buffer is allowed to adjust its 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 relati onship between the txclk and the internal character-rate clock is fixed a nd the device operates normally. when configured fo r half-rate refclk sampling of t he transmit character stream (txcksel = low and txrate = high ), assertion of txrst is only used to clear phase-align buffer faults caused by highly asymmetric reference clock periods or reference clocks with excessive cycle-to-cycle jitter. during this alignment pe riod, 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 of 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 phas e 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 assertion and deassertion of trstz , after the presence of a valid txclk and after allowing enough time for the txpll to lock to the reference clock (as specified by parameter t txlock ). transmit path clock and clock control txcksel 3-level select static control input [5] transmit clock select . selects the clock source used to write data into the transmit input register of the transmit chann el. when low, the input register is clocked by refclk ? . [4] when high or mid, txclk ? is the input register clock for txd[7:0] and txct[1:0]. when txrate=high, configuring txcksel = high or mid is an invalid mode of operation. txclko ? lvttl output transmit clock output . this true and complement output cl ock is synthesized by the transmit pll and is synchronous to the internal transmi t 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. txrate lvttl input, static control input, internal pull-down 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 multipli es refclk by 10 to generate the serial bit-rate clock. see ta b l e 9 for a list of operating serial rates. when refclk is selected to clock the receive parallel interfaces (rxcksel = low), the txrate input also determine s if the clocks on the rxclk ? and rxclkc ? outputs are full or half-rate. when txrate = high (refclk is half-rate), the rxclk and rxclkc+ output clocks are also half-rate clocks and follow t he frequency and duty cycle of the refclk input. when txrate = low (refclk is full-rate), the rxclk and rxclkc+ output clocks are also full-rate clocks and follow the frequency and duty cycle of the refclk input. when txrate=high, configuring txcksel = high or mid is an invalid mode of operation. txclk lvttl clock input, internal pull-down transmit path input clock . this clock must be frequency-coherent to txclko ? , but may be offset in phase. the internal operating phase of the input clock (relative to reflck or txclko+) is adjusted when txrst = low and locked when txrst =high. transmit path mode control txmode[1:0] 3-level select [5] static control inputs transmit operating mode . these inputs are interpreted to select one of nine operating modes of the transmit path. see ta b l e 3 for a list of operating modes. notes 4. when refclk is configured for half-rate operation (txrate = high), this input is sampled (or the outputs change) relative to both the rising and falling edges of refclk. 5. 3-level select inputs are used for static configuration. they are ternary (not binary) inputs that make use of non-standard l ogic levels of low, mid, and high. the low level is usually implement ed by direct connection to v ss (ground). the high level is usually im plemented by direct connection to v cc (power). when not connected or allowed to float, a 3-level select input will self-bias to the mid level. pin descriptions cyp(v)15g0101dxb single-channel hotlink ii (continued) pin name i/o characteristics signal description
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 8 of 43 receive path data signals rxd[7:0] lvttl output, synchronous to the rxclk ? output (or refclk ?? input [6] when rxcksel = low) parallel data output . these outputs change following the rising edge of the selected receive interface clock. when the decoder is enabled (d ecmode = high or mid), t hese outputs represent either received data or a special character. the status of the received data is represented by the values of rxst[2:0]. when the decoder is bypassed (decmode = lo w), rxd[7:0] become the higher order bits of the 10-bit received character. see table 13 for details. rxst[2:0] lvttl output, synchronous to the rxclk ? output (or refclk ?? input [6] when rxcksel = low) parallel status output . these outputs change following the rising edge of the selected receive interf ace clock. when the decoder is bypassed (decmode = low), rxst[1:0] become the two low-order bits of the 10-bit received character, whil e rxst[2] = high indicates the presence of a comma character in the output register. when the decoder is enabled (decmode = high or mid), rxst[2:0] provide status of the received signal. see ta b l e 1 6 for a list of receive character status. rxop 3-state, lvttl output, synchronous to the rxclk ? output (or refclk ?? input [6] when rxcksel = low) receive path odd parity. when parity generation is enabled (parctl ? low), the parity output is valid for the data on the rxd bus bits. when parity generation is disabled (parctl = low) , this output driver is disabled (high z). receive path clock and clock control rxclk ? 3-state, lvttl output clock receive character clock output . when configured such that th e output data path is clocked by the recovered clock (rxcksel = mid), these true and complement clocks are the receive interface clocks which are used to control ti ming of output data (rxd[7:0], rxst[2:0] and rxop). this clock is output continuously at either the dual-character rate (1/20 th the serial bit-rate) or character rate (1/10 th the serial bit-rate) of the data being received, as selected by rxrate. when configured such that the output data path is clocked by refclk instead of recovered clock (rxcksel = low), the rxclk ? output drivers present a buffered and delayed form of refclk. in this mode, rxclk ? and rxclkc+ are buffered forms of refclk that are slightly different in phase, but follow the fr equency and duty cycle of refclk. this phase difference allows the user to select the opti mal set-up/hold timing for their specific interface. rxclkc+ 3-state, lvttl output delayed refclk+ when rxcksel = low . delayed form of refclk+, used for transfer of output data to a host system. this output is only enabled when the receive parallel interface is configured to present data relative to refclk (rxcksel = low). when rxcksel = low, the rxclkc+ follows the frequency and duty cycle of refclk+. rxrate lvttl input static control input, internal pull-down receive clock rate select . when low, the rxclk ? recovered clock outputs are complementary clocks operating at the recovered character rate. data for the receive channel should be latched on either the rising edge of rxclk+ or falling edge of rxclk?. when high, the rxclk ? recovered clock outputs are complementary clocks operating at half the character rate. data for the receive channel should be latched alternately on the rising edge of rxclk+ and rxclk?. when the output r egister is operated wi th refclk clocking (rxcksel = low), rxrate is not interpreted and rxclk follows th e frequency and duty cycle of refclk. rfen lvttl input, asynchronous, internal pull-down reframe enable . active high. when high, the framer in the receive channel is enabled to frame per the presently enabled framing mode and selected framing character. note 6. when refclk is configured for half-rate operation (txrate = high), this input is sampled (or the outputs change) relative to both the rising and falling edges of refclk. pin descriptions cyp(v)15g0101dxb single-channel hotlink ii (continued) pin name i/o characteristics signal description
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 9 of 43 rxmode 3-level select [7] static control input receive operating mode . this input selects one of two rxst channel status reporting modes and is only interpreted when the decoder is enabled (decmode ? low). see table 19 for details. framchar 3-level select [7] 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 a nd negative disparity vers ions 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 = low is reserved for component test. rfmode 3-level select static control input [7] reframe mode select . used to select the type of char acter framing used to adjust the character boundaries (based on detection of on e or more framing characters in the data stream. this signal operates in conjunction with 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 dat a stream. this mode of framing stretches the recovered character-rate clock for one or multiple cycles to alig n 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 (five characters), 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) in the received data stream, on identical 10-bit boundaries, on four directly adjacent characters. the recovered character clock remains in the same phase regardless of character offset. parctl 3-level select static control input [7] parity check/generate control . used to control the parity check and generate functions. when low, parity checking is disabled, a nd the rxop output is disabled (high z). when mid, and the 8b/10b encoder and decoder are enabled (txmode[1] ? low, decmode ? low), txd[7:0] inputs are checked (along with txop) for valid odd parity, and odd parity is generated fo r the rxd[7:0] outputs and pr esented on rxop. when the 8b/10b encoder and decoder are disabled (txmode[1] ? low, decmode ? low), the txd[7:0] and txct[1:0] inputs are checked (a long with txop) for valid odd parity, and odd parity is generated for t he rxd[7:0] and rxst[1:0] ou tputs and presented on rxop. when high, parity generation and checking ar e enabled. the txd[7:0] and txct[1:0] inputs are checked (along with txop) for valid odd pa rity, and odd parity is generated for the rxd[7:0] and rxst[2:0] out puts and presented on rxop. see table 2 and ta b l e 1 5 for details. decmode 3-level select static control input [7] decoder mode select . when low, the decoder is bypasse d and raw 10-bit characters are passed to the output register. when the de coder is bypassed, rxcksel must be mid. when mid, the cypress decoder table for special code characters is used. when high, the alternate decoder table for special code characters is used. see table 21 for a list of the special codes supported in both encoded modes. rxcksel 3-level select [7] static control input receive clock mode . selects the receive clock source used to transfer data to the output registers and configures the elasti city buffer in the receive path. when low, the output register is clocked by refclk. rxclk ?? and rxclkc+ present buffered and delayed forms of refclk. when mid, the rxclk ? output follows the recovered clock as selected by rxrate and the elasticity buffer is bypassed. when the 10b/8b decoder and elasticity buffer are bypassed (decmode=low), rxcksel must be mid. configuring rxcksel = high is an invalid mode of operation. note 7. 3-level select inputs are used for static configuration. they are ternary (not binary) inputs that make use of non-standard l ogic levels of low, mid, and high. the low level is usually implement ed by direct connection to v ss (ground). the high level is usually im plemented by direct connection to v cc (power). when not connected or allowed to float, a 3-level select input will self-bias to the mid level. pin descriptions cyp(v)15g0101dxb single-channel hotlink ii (continued) pin name i/o characteristics signal description
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 10 of 43 device control signals spdsel 3-level select, [8] static control input serial rate select . this input specifies t he operating bit-rate range of both transmit and receive plls. low = 195?400 mbaud, mi d = 400?800 mbaud, high = 800?1500 mbaud. when spdsel=low, setting txrate=high (hal f-rate reference cl ock) is invalid. refclk ? differential lvpecl or single-ended lvttl input clock 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 rang e controller block of the receive cdr plls. this input clock may also be se lected to clock the transmit and receive parallel interfaces. when driven by a single-ended lvcmos or lvttl clock source, the clock source may be connected to either the true or complement refclk input, with the alternate refclk input left open (floating). when driven by an lvpecl clock source, the clock must be a differential clock, using both inputs. when txcksel = low, re fclk is also used as the clock for the parallel transmit data (input ) interface. when rxcksel = low and decoder is enabled, the elasticity buffer is enabled and refclk is used as the clock source for the parallel receive data (output) interface. if the elasticity buffer is used, framing characters will be inse rted or deleted to/from the data stream to compensate for frequency differences between the reference clock and recovered clock. when addition happens, a k28.5 will be appended immediately after a framing character 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. trstz lvttl input, internal pull-up device reset . active low. initializes all state machines and counters in the device. when sampled low by the rising edge of refl ck, 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. analog i/o and control out1 ? cml differential output primary differential serial data outputs . these pecl-compatible cml outputs (+3.3 v referenced) are capable of driving terminated tr ansmission lines or standard fiber-optic trans- mitter modules. out2 ? cml differential output secondary differential serial data outputs . these pecl-compatible cml outputs (+3.3 v referenced) are capable of driving terminated tr ansmission lines or standard fiber-optic trans- mitter modules. in1 ? lvpecl differential input, with internal dc restoration primary differential serial data inputs . these inputs accept the serial data stream for deserialization and decoding. the in1 ?? serial stream is passed to the receiver clock and data recovery (cdr) circuit to extract the data content when insel = high. in2 ? lvpecl differential input, with internal dc restoration secondary differential serial data inputs . these inputs accept the serial data stream for deserialization and decoding. the in2 ?? serial stream is passed to the receiver cdr circuit to extract the data content when insel = low. insel lvttl input, asynchronous receive input selector . determines which external serial bi t stream is passed to the receiver cdr. when high, the in1 ? input is selected. when low, the in2 ? input is selected. sdasel 3-level select, [8] static control input signal detect amplitude level select . allows selection of one of three predefined amplitude trip points for a valid signal indication, as listed in table 10 . lpen lvttl input, asynchronous, internal pull-down loop-back-enable . active high. when asserted (high), the transmit serial data is internally routed to the receiver cdr circuit.all enabled seri al drivers are forced to differential logic ?1.? all serial data inputs are ignored. 8. 3-level select inputs are used for static configuration. they are ternary (not binary) inputs that make use of non-standard l ogic levels of low, mid, and high. the low level is usually implement ed by direct connection to v ss (ground). the high level is usually im plemented by direct connection to v cc (power). when not connected or allowed to float, a 3-level select input will self-bias to the mid level. pin descriptions cyp(v)15g0101dxb single-channel hotlink ii (continued) pin name i/o characteristics signal description
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 11 of 43 oele lvttl input, asynchronous, internal pull-up serial driver output enable latch enable . active high. when oele = high, the signals on the boe[1:0] inputs dire ctly control the outx ? differential drivers. when the boe[x] input is high, the associated outx ? differential driver is enabled. when the boe[x] input is low, the associated outx ? differential driver is powered down. when oele returns low, the last values present on boe[1:0] are captured in t he internal output enable latch. the specific mapping of boe[1:0] signals to trans mit output enables is listed in table 14 . if the device is reset (trstz is sampled low), the latch is reset to disable both outputs. bistle lvttl input, asynchronous, internal pull-up transmit and receive bist latch enable . active high. when bistle = high, the signals on the boe[1:0] 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. when the boe[x] input is high, the associated transmit or receive channel is configured for normal da ta transmission or reception. when bistle returns low, the last values present on boe[1: 0] are captured in the internal bist enable latch. the specific mapping of boe[1:0] signals to transmit a nd receive bist enables is listed in ta b l e 1 4 . when the latch is closed, if the device is reset (trstz is sampled low), the latch is reset to disable bist on both the transmit and receive channels. rxle lvttl input, asynchronous, internal pull-up receive channel power-control latch enable . active high. when rxle = high, the signal on the boe[0] input directly controls the power enable for the receive pll and analog logic. when the boe[0] input is high, the re ceive channel pll and analog logic are active. when the boe[0] input is low, the receive channel pll and analog logic are placed in a non-functional power saving mode. when rxle returns low, the last value present on boe[0] is captured in the internal rx pll enable latch. the specif ic mapping of boe[1:0] signals to the receive channel enable is listed in ta b l e 1 4 . when the latch is closed, if the device is reset (trstz is sampled low), the latch is reset to disable the receive channel. boe[1:0] lvttl input, asynchronous, internal pull-up bist, serial output, and receive channel enables . these inputs are passed to and through the output enable latch when oele = high, and captured in this latch when oele returns low. these inputs are passed to and through the bist enable latch when bistle = high, and captured in this latch when bistle retu rns low. these inputs are passed to and through the receive channel enable latch when rxle = h igh, and captured in this latch when rxle returns low. lfi lvttl output, asynchronous link fault indication output . active low. lfi 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. jtag interface tms lvttl input, internal pull-up test mode select . used to control access to the jtag test modes. if maintained high for > 5 tclk cycles, the jtag test co ntroller is reset. the t ap controller is also reset automatically upon application of power to the device. tclk lvttl input, internal pull-down jtag test clock . tdo three-state lvttl output test data out . jtag data output buffer which is high z while jtag test mode is not selected. tdi lvttl input, internal pull-up test data in . jtag data input port. power v cc +3.3 v power gnd signal and power ground for all internal circuits. pin descriptions cyp(v)15g0101dxb single-channel hotlink ii (continued) pin name i/o characteristics signal description
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 12 of 43 cyp(v)15g0101dxb hotlink ii operation the cyp(v)15g0101dxb is a highly configurable device designed to support reliable tran sfer of large quantities of data using high-speed serial links from a single source to one or more destinations. cyp(v)15g0101dxb transmit data path operating modes the transmit path of the cyp(v)15g0101dxb supports a single character-wide data path. this data path is used in multiple operating modes as controlled by the txmode[1:0] inputs. input register the bits in the input register support different assignments, based on if the character is unen coded, encoded with two control bits, or encoded with three control bits. these assignments are shown in table 1 . the input register captures a mini mum of eight data bits and two control bits on each input clock cycle. when the encoder is bypassed, the txct[1:0] control bits are part of the pre-encoded 10-bit data character. when the encoder is enabled (txmode[1] ? low), the txct[1:0] bits are interpreted along with the txd[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 characters. phase-align buffer data from the input register is passed either to the encoder or to the phase-align buffer. when the transmit path is operated synchronous to refclk ? (txcksel = low and txrate = low), the phase-align buffer is bypassed and data is passed directly to the parity check and encoder block to reduce latency. when an input register clock with an uncontrolled phase relationship to refc lk is selected (txcksel ? low) or if data is captured on both edges of refclk (txrate = high), the phase-align buffer is enabled. this buffer is used to absorb clock phase differences between the presently selected input clock and the internal character clock. initialization of the phase-align buffer 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 sampl ed internally to synchronize it to the internal transmit path state machine. once set, the input clock is allowed to skew in time up to half a character period in either direction relative to refclk ? ; that is ? 180. this time shift allows the delay path of the character clock (relative to reflck ? ) 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 txper output. this output indicates a continuous error until the phase-align buffer is reset. while the erro r remains active, the transmitter outputs a continuous c0.7 character to indicate to the remote receiver that an error condition is present in the link. in specific transmit modes, it is also possible to reset the phase-align buffer with minimal disruption of the serial data stream. when the transmit interfac e 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 recenter the phase-align buffer and clear the error condition. [10] parity support in addition to the ten data and co ntrol bits that are captured at the transmit input register, a txop input is also available. this allows the cyp(v)15g0101dxb to support odd parity checking. parity checking is available for all operating modes (including encoder bypass). the spec ific mode of parity checking is controlled by the parctl input, and operates per table 2 . when parctl = mid (open) and the encoder is enabled (txmode[1] ? low), only the txd[7:0] data bits are checked for odd parity along with the txop bit. when parctl = high with the encoder enabled (or mid with the encoder bypassed), the txd[7:0] and txct[1:0] inputs are checked for odd parity along with the txop bit. when parctl = low, parity checking is disabled. table 1. input register bit assignments [9] signal name unencoded (encoder bypassed) encoded (encoder enabled) two-bit control three-bit control txd[0] (lsb) din[0] txd[0] txd[0] txd[1] din[1] txd[1] txd[1] txd[2] din[2] txd[2] txd[2] txd[3] din[3] txd[3] txd[3] txd[4] din[4] txd[4] txd[4] txd5] din[5] txd[5] txd[5] txd[6] din[6] txd[6] txd[6] txd[7] din[7] txd[7] txd[7] txct[0] din[8] txct[0] txct[0] txct[1] (msb) din[9] txct[1] txct[1] scsel n/a n/a scsel notes 9. the txop input is also captured in the input register, bu t its interpretation is under the separate control of parctl. 10. one or more k28.5 characters may be added or lost from the data stream during this reset operation. when used with non-cypre ss devices that require a complete 16-character word sync sequence for proper receive elasticity buffer alignment, it is recommend that the sequence be followed b y a second word sync sequence to ensure proper operation.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 13 of 43 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), detection of a parity error causes a positive disparity version of a c0.7 transmission character to be passed to the transmit shifter. encoder the character, received from t he input register or phase-align buffer and parity check logic, is then passed to the encoder logic. this block interprets each character and any 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 ei ght -bit special character code accepted in the input register the 10-bit equivalen t 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 charac ter 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 ch aracters generated are controlled by the txmode[1:0], scsel, txct[1:0], and txd[7:0] inputs for each character. data encoding raw data, as received directly fr om 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 of the 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 the txct[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 21 . when directed to encode the character as a data character, it is encoded using the data character encoding rules in ta b l e 2 0 . the 8b/10b encoder is standar ds compliant with ansi/ncits asc x3.230-1994 (fibre chan nel), ieee 802.3z (gigabit ethernet), the ibm ? escon ? and ficon?, and digital video broadcast (dvb-asi) standards for data transport. many of the special character codes listed in ta b l e 2 1 may be generated by more than one input character. the cyp(v)15g0101dxb is designed to support two independent (but non-overlapping) special character code tables. this allows the cyp(v)15g0101dxb 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 3-level select inputs allow one of nine transmit modes to be selected. the transmit modes are listed in table 3 . the encoded modes (tx modes 3 through 8) support multiple encoding tables. these encoding tables vary by the specific combinations of scsel, txct[1], and txct[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 0?encoder bypass table 2. input register bits checked for parity [12] signal name transmit parity check mode (parctl) low mid high txmode[1] = low txmode[1] ? low txd[0] x [11] xx txd[1] x x x txd[2] x x x txd[3] x x x txd[4] x x x txd[5] x x x txd[6] x x x txd[7] x x x txct[0] x x txct[1] x x txop x x x notes 11. bits marked as x are xored together. result must be a logic-1 for parity to be valid. 12. transmit path parity errors are reported on the txper output.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 14 of 43 when the encoder is bypassed, the character captured from the txd[7:0] and txct[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) regardless of the running disparity of the previous character. with the encoder bypassed, the txct[1:0] inputs are considered part of the data character and do not perform a control function that would otherwise modify th e interpretation of the txd[7:0] bits. the bit usage and mapping of these control bits when the encoder is bypassed is shown in ta b l e 4 . in encoder bypass mode, the scsel input is ignored. all clocking modes interpret the data in the same way. tx modes 1 and 2?factory test modes these modes enable specific fact ory test configurations. they are not considered normal operating modes of the device. entry or configuration into these test modes will not damage the device. tx mode 3?atomic word sync and scsel control of special codes when configured in tx mode 3, the scsel input is captured along with the txct[1:0] data control inputs. these bits combine to control the interpretation of the txd[7:0] bits and the characters generated by them. these bits are interpreted as listed in table 5 . when txcksel = mid or high, th e transmit channel captures data into its input register using the txclk clock. word sync sequence when txct[1:0] = 11, a 16-character sequence of k28.5 characters, known as a word sync sequence, is generated on the transmit channel. this seque nce of k28.5 characters may start with either a positive or negative disparity k28.5 (as 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 16 characters have been generated. the content of the i nput register is ignored for the duration of this 16-character sequence. at the end of this sequence, if the txct[1:0] = 11 condition is sampled again, the sequence restarts and remains uninterrupted for the following 15 character clocks. if parity checking is enabled, the character used to start the word sync sequence must also have correct odd parity. this is true even though the contents of the txd[7:0] bits do not directly control the generati on of characters during the word sync sequence. once the sequence is started, parity is not checked on the following 15 characters in the word sync sequence. table 3. transmit operating modes tx mode operating mode mode number txmode [1:0] word sync sequence support scsel control txct function 0 ll none none encoder bypass 1lm none none reserved for test 2lh none none reserved for test 3 ml atomic special character encoder control 4 mm atomic word sync encoder control 5 mh atomic none encoder control 6 hl interruptible special character encoder control 7 hm interruptible word sync encoder control 8 hh interruptible none encoder control table 4. encoder bypass mode (txmode[1:0] = ll) signal name bus weight 10b name txd[0] (lsb) [13] 2 0 a txd[1] 2 1 b txd[2] 2 2 c txd[3] 2 3 d txd[4] 2 4 e txd[5] 2 5 i txd[6] 2 6 f txd[7] 2 7 g txct[0] 2 8 h txct[1] (msb) 2 9 j table 5. tx modes 3 and 6 encoding scsel txct[1] txct[0] characters generated x x 0 encoded data character 0 0 1 k28.5 fill character 1 0 1 special character code x 1 1 16-character word sync sequence note 13. lsb is shifted out first.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 15 of 43 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 se quence is started as soon as the txct[1:0] = 11 condition is detec ted on the channel. in order for the sequence to contin ue, the txct[1:0] inputs must be sampled as 00 for the remaining 15 characters of the sequence. if at any time a sample period exists where txct[1:0] ? 00, the word sync sequence is terminated, and a character representing the 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 txct[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 pari ty. the detection of a character with incorrect parity during a word sync sequence (regardless of the state of txct[1:0]) 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 register for the transmit channel is clocked by refclk. [14] when txcksel = high or mid, the input register for the transmit channel is clocked with txclk ? . tx mode 4?atomic word sync and scsel control of word sync sequence generation when configured in tx mode 4, the scsel input is captured along with the txct[1:0] data control inputs. these bits combine to control the interpretation of the txd[7:0] bits and the characters generated by them. these bits are interpreted as listed in table 6 . tx mode 4 also supports an atomic word sync sequence. unlike tx mode 3, this sequence is started when both scsel and txct[0] are sampled 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 that documented for tx mode 3. tx mode 5?atomic word sync, no scsel when configured in tx mode 5, the scsel signal is not used. the txct[1:0] inputs control t he characters generated by the channel. the specific characters generated by these bits are listed in table 7 . tx mode 5 also has the capabili ty of generating an atomic word sync sequence. for the sequence to be started, the txct[1:0] inputs must both be sampled high. the generation and operation of this word sync sequence is the same as that documented for tx mode 3. transmit bist the transmit channel contains an internal pattern generator that can be used to validate both device and link operation. this generator is enabled by the boe[1] signal, as listed in table 8 (when the bistle latch enable input is high). when enabled, a register in the 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 an identical lfsr in the attached receiver. if the receive channel is configured for refclk clocking (rxcksel = low), each pass is preceded by a 16-character word sync sequence to allow elasticity buffer alignment and management of clock-frequency variations. when the bistle signal is high, if the boe[1] input is low, the bist generator in the transmit channel is enabled (and if boe[0] = low the bist checker in the receive channel is enabled). when bistle returns low, the values of the boe[1:0] 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 again. a device reset (trstz sampled low), also presets the bist enable latch to disable bist on both the transmit and receive channels. all data and data-control information present at the txd[7:0] and txct[1:0] inputs are ignored when bist is active on the transmit channel. table 6. tx modes 4 and 7 encoding scsel txct[1] txct[0] characters generated x x 0 encoded data character 0 0 1 k28.5 fill character 0 1 1 special character code 1 x 1 16-character word sync sequence table 7. tx modes 5 and 8 encoding scsel txct[1] txct[0] characters generated x 0 0 encoded data character x 0 1 k28.5 fill character x 1 0 special character code x 1 1 16-character word sync sequence note 14. when refclk is configured for half-rate operation (txrate = high), this input is sampled (or the outputs change) relative to both the rising and falling edges of refclk.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 16 of 43 serial output drivers the serial interface output drivers use high-performance differential current mode logic (cml) to provide source-matched drivers for the transmission lines. these serial drivers accept data from the transmit shifter. these outputs have signal swings equivalent to that of standard pecl drivers, and are capable of driving ac-coupled optical modules or ac-coupled transmission lines. when configured for local loop-back (lpen = high), the enabled serial drivers are configured to drive a static differential logic-1. each serial driver can be enabled or disabled through the boe[1:0] inputs, as controlled by the oele latch-enable signal. when oele = high, the signals present on the boe[1:0] inputs are passed through the serial output enable latch to control the serial driver. the boe[1:0] input with out1 ? and out2 ?? driver is listed in ta b l e 8 . when oele = high and boe[x] = high, the associated serial driver is enabled to drive any attached transmission line. when oele = high and boe[x] = low, the associated driver is disabled and internally configured for minimum power dissipation. if both serial drivers for the channel are disabled, the internal logic for the transmit channel is also configured for lowest power operation. when oele returns low, the values present on the boe[1:0] inputs ar e latched in the output enable latch, and remain there until oele returns high to open the latch again. a device reset (trstz sampled low) clears this latch and disables both serial drivers. note . when both serial output drivers are disabled and a driver 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 multipli er accepts a character-rate or half-character-rate external cl ock 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 path. this clock multiplier pll can accept a refclk input between 19.5 mhz and 150 mhz, however, this clock range is limited by the operating mode of the c yp(v)15g0101dxb clock multiplier (controlled by txrate) and by the level on the spdsel input. when txrate=high, configuring txcksel = high or mid is an invalid mode of operation. spdsel is a 3-level select [15] (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 9 . the refclk ? input is a differential input with each input internally biased to 1.4 v. if the refclk+ input is connected to a ttl, lvttl, or lvcmos clock source, 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 0 v-differential crossing point remains within the parametric range supported by the input. cyp(v)15g0101dxb r eceive data path serial line receivers two differential line receivers, in1 ?? and in2 ? , are available for accepting serial data streams. the active serial line receiver is selected using the insel input. both serial line receivers have differential inputs, 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 v diffs > 100 mv, or 200-mv peak-to-peak differential. each line receiver can be dc- or ac-coupled to +3.3 v powered fiber-optic interface modules (any ecl/pecl logic family, not limited to 100 k pecl) or ac-coupled to +5 v-powered optical modules. the common-mode tolerance of the receivers accommodates a wide range of signal termination voltages. each receiver provides internal dc-restoration, to the center of the receiver?s common mode range, for ac-coupled signals. table 8. output enable, bist, and receive channel enable signal map boe input output controlled (oele) bist channel enable (bistle) receive pll channel enable (rxle) boe[1] out2 ? transmit x boe[0] out1 ? receive receive table 9. operating speed settings spdsel txrate refclk frequency (mhz) signaling rate (mbaud) low 1 reserved 195?400 0 19.5?40 mid (open) 1 20?40 400?800 0 40?80 high 1 40?75 800?1500 0 80?150 note 15. when refclk is configured for half-rate operation (txrate = high), this input is sampled (or the outputs change) re lative to both the rising and falling edges of refclk.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 17 of 43 the local loop-back input (lpen) allows the serial transmit data to be routed internally back to the clock and data recovery circuit. when configured for local loop-back, the transmit serial driver outputs are forced to output a differential logic-1. this prevents local diagnostic patterns from being broadcast to attached remote receivers. signal detect/link fault each selected line rece iver (i.e., that rout ed to the clock and data recovery pll) is simu ltaneously 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) [16] 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 lfi (link fault indicator) output. analog amplitude while most signal monitors are based on fixed constants, the analog amplitude level detection is adjustable to allow operation with highly attenuated signals, or in high-noise environments. this adjustment is made through the sdasel signal, a 3-level select [17] (ternary) input, which sets the trip point for the detection of a valid signal at one of three levels, as listed in ta b l e 1 0 . the analog signal detect monitor is active for the present line receiver, as selected by the insel input. when configured for local loop-back (lpen = high), the analog signal detect monitor is disabled. transition density the transition detecti on 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 (within the referenced period), the transition detection logic asserts lfi . the lfi output remains asserted until at least one transition is detected in each of three adj acent received characters. range control the clock/data recovery (cdr) ci rcuit 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 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 [16] 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 (rxclk) 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)15g0101dxb receive channel can be enabled and disabled through the boe[0] input, as controlled by the rxle latch-enable signal. when rxle = high, the signal present on the boe[0] input is passed th rough the receive channel enable latch to control the pll and lo gic of the receive channel. the boe[1:0] input functions are listed in ta b l e 8 . when rxle = high and boe[0] = high, the receive channel is enabled to receive and recover a serial stream from the line receiver. when rxle = high and boe[0] = low, the receive channel is disabled and internally configured for minimum power dissipation. when disabled, the channel indicates a constant lfi output. when rxle returns low, the values present on the boe[1:0] inputs are latched in the receive channel enable latch, and remain there until rxle returns high to open the latch again. [19] table 10. analog amplitude detect valid signal levels [18] sdasel typical signal with peak amplitudes above low 140-mv p-p differential mid (open) 280-mv p-p differential high 420-mv p-p differential notes 16. refclk has no phase or frequency relationship with the recovered cl ock(s) and only acts as a centering reference to reduce c lock synchronization time. refclk must be within 1500 ppm (0.15%) of the remote transmitter?s pll reference (refclk) frequency. although transmitting to a hotl ink 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. 17. when refclk is configured for half-rate operation (txrate = high), this input is sampled (or the outputs change) relative to both the rising and falling edges of refclk. 18. the peak amplitudes listed in this table are for typical wave forms that have generally 3?4 transitions for every ten bits. i n a worse case environment the signals may have a sign-wave appearance (highest transition density with r epeating 0101...). signal peak amp litudes levels within this envi ronment type could increase the values in the table above by approximately 100 mv. 19. when a disabled receive channel is reenabled, the status of the lfi output and data on the parallel outputs may be indeterminate for up to 2 ms.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 18 of 43 clock/data recovery the extraction of a bit-rate clock and recovery of bits from a received serial stream is performed by a cdr block within the receive channel. the clock extraction function is performed by a high-performance embedded pll that tracks the frequency of the transitions in the incoming bi t stream and aligns the phase of the internal bit-rate clock to the transitions in the serial data stream. the cdr accepts a c haracter-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 reduce pll acquisition time 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 (rxclk) 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 rxclk 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 [20] 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 lfi output can be used to select an alternate data stream. when an lfi indication is detect ed, external logic can toggle selection of the in1 ? and in2 ? inputs through the insel input. when a port switch takes place, it is nec essary for the receive pll to reacquire the new serial stream and frame to the incoming character boundaries. deserializer/framer each cdr circuit extracts bits from the 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 these characters in the data stream are used to determine the character boundaries of all following characters. framing character the cyp(v)15g0101dxb allows selection of two combinations of framing characters to suppo rt requirements of different interfaces. the selection of the framing character is made through the framchar input. the specific bit combinations of these framing characters are listed in table 11 . 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. framer the framer operates in one of th ree different modes, as selected by the rfmode input. in additi on, the framer itself may be enabled or disabled through the rfen input. when rfen = low, the framer is disabled, and no combination of bits in a received data stream will alter the character boundaries. when rfen = high, the framer -mode selected by rfmode is enabled. when rfmode = low, the low-latency framer is selected. 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 reco vered clock, the clock period is not stretched by more than two bit-periods in any one clock cycle. when operated wit h 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 cl ock (rxrate = high), the output of properly framed characters may be delayed by up to 14 character-clock cycles from the de tection of the selected framing character. [22] table 11. framing character selector framchar bits detected in framer character name bits detected low reserved for test mid (open) comma+ comma? 00111110xx [21] or 11000001xx high ?k28.5 ? k28.5 0011111010 or 1100000101 notes 20. refclk has no phase or frequency relationship with the recove red clock(s) and only acts as a centering reference to reduce c lock synchronization time. refclk must be within 1500 ppm (0.15%) of the remote transmitter?s pll reference (refclk) frequency. although transmitting to a hotl ink 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. 21. the standard definition of a comma contains only seven bits. ho wever, since all valid comma characters within the 8b/10b cha racter set also have the 8th bit as an inversion of the 7th bit, the compare pattern is extended to a full eight bits to reduce the possibility of a framing error. 22. 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.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 19 of 43 when rfmode = mid (open), the cypress-mode multi-byte framer is selected. the required detection of multiple framing characters makes the link much mo re 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 th at 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 bound aries are only adjusted if the selected framing character is de tected at least twice within a span of 50-bits, with both instances on identical 10-bit character boundaries. when rfmode = high, the alte rnate-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 mo de, 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 consec utive characters, on identical 10-bit boundaries, before character framing is adjusted. framing is enabled when rfen = high. if rfen = low, the framer is disabled. when the fram er is disabled, no changes are made to the recovered character boundary, 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 patter ns 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 th e 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 20 and table 21 of this data sheet. valid data characters are indicated by a 000b bit-combination on the rxst[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 th e output register. in this mode, the receive elasticity buffers are bypassed, and rxcksel must be mid. when decmode = mid (or open), the 10-bit transmission characters are decoded using table 20 and table 21 . received special code characters are de coded using the cypress column of ta b l e 2 1 . when decmode = high, the 10-bit transmission characters are decoded using table 20 and ta ble 21 . received special code characters are decoded us ing the alternate column of ta b l e 2 1 . receive bist operation the receiver interface contains an internal pattern generator that can be used to validate both device and link operation. this generator is enabled by the boe[0] signal as listed in table 8 (when the bistle latch enable input is high). when enabled, a register in the 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 pseudo-random sequence that can be matched to an identical lfsr in the attached transmitter. if the receive channels are configured for refclk clocking (rxcksel ? low), each pass is preceded by a 16-character word sync sequence. when synchronized with the received data stream, the receiver checks each character in the decoder with each character generated by the lfsr and indicates compare errors and bist status at the rxst[2:0] bi ts of the output register. when the bistle signal is high, if the boe[0] in put is low the bist generator/checker in the receive channel is enabled (and if boe[1] = low the bist generat or in the transmit channel is enabled). when bistle returns low, the values of the boe[1:0] 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 again. 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 rxst[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. rxst[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 the receive channel. the status reported on rxst[2:0] by the bist state machine are listed in table 16 . 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)15g0101dxb is identical to that in the cy7b933 and cy7c924dx, allowing interoperable systems to be built when used at compatible serial signaling rates.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 20 of 43 if the number of invalid characters received ever exceeds the number of valid characters by 16, 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 refclk clocking (rxcksel = low), 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 = low. 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-mode multi-byte fram er is enabled (rfmode = high) and the receiver outputs are clocked relative to a recovered clock (rxcksel ? mid), it is necessary to frame the receiver before bist is enabled. if the receiver outputs are clocked relative to refclk (rxcksel = low), the transmitter precedes every 511 character bist sequence with a 16-character word sync sequence. receive elasticity buffer the receive channel contains an elasticity buffer that is designed to support multiple clocking modes. this buffer allows 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 uncon- trolled phase relative to the elasticity buffer write clock. the elasticity buffer is 10 characters deep, and supports a 12-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 this buffer is always the recovered clock for the read channel. the read clock for the elasticity buffer can be set to character-rate refclk (rxcksel = low and decmode ? low). the write clock for the elasticity buffer is always recovered clock. when rxcksel = low, the rece ive channel is clocked by refclk. the rxclk ? and rxclkc+ outputs present buffered and delayed forms of refclk. in this mode, the receive elasticity buffer is enabled. for refclk clocking, the elasticity buffer must be able to insert k28.5 characters and delete framing characters as appropriate. the elasticity buffer is bypassed whenever the decoder is bypassed (decmode = low). when the decoder and elasticity buffer are bypassed, rxckselx must be set to mid. when rxcksel = mid (or open), the receive channel output register is clo cked by the recovered clock. the insertion of a k28.5 or delet ion of a framing character can occur at any time. however, the actual timing on these insertions and deletions is controlled in pa rt 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 an elasticity buffer overflow or underflow in the receive channel, a minimum density of framing characters must be present in the received data stream. prior to reception of valid data, at least one word sync sequence (or at least four framing characters) must be received to allow the receive elasticity buffer to be centered. the elasticity buffer may also be centered by a device reset operation initiated through the trstz input. however, following such an event, the cyp(v)15g0101dxb will normally require a framing event before it will correctly decode characters. receive modes the operating mode of the receive path is set through the rxmode input. the ?reserved for test? setting (rxmode = m) is not allowed, even if the receiver is not being used, as it will stop normal function of t he device. when the decoder is disabled, the rxmode se tting is ignored as long as it is not a test mode. these modes determi ne the rxst status reporting. the different receive modes are listed in ta b l e 1 2 . power control the cyp(v)15g0101dxb supports user control of the powered up or down state of the transmit and receive channel. the receive channel is controlled by the rxle signal and the values present on the boe[1:0] bus. th e transmit channel is controlled by the oele signal and the valu es present on the boe[1:0] bus. if either the transmit or the receive channel is not used, then powering down the unused channel will save power and reduce system heat generati on. controlling system power dissipation will improve the system performance. receive channel when rxle = high, the signal on the boe[0] input directly controls the power enable for the receive pll and the analog circuit. when boe[0] = high, the receive channel and its analog circuits are active. when boe[0] = low, the receive channel and its analog circuits are powered down. when rxle returns low, the values present on the boe[1:0] inputs are latched in the receive channel enable latch. when a disabled receive channel is re-enabled, the status of the lfi output and data on the parallel outputs for the receive channel may be indeterminate for up to 2 ms. transmit channel when oele = high, the signals on the boe[1:0] inputs directly control the power enables for the serial drivers. when a boe[1:0] input is high, the associated serial driver is enabled. when a boe[1:0] input is low, the associated serial driver is disabled. when both serial drivers are powered down, the logic in the entire transmit channel is also powered down. when oele returns low, the values presen t on the boe[1:0] inputs are latched in the output enable latch. device reset state when the cyp(v)15g0101dxb is reset by assertion of trstz , both the transmit enable and receive enable latches are cleared, and the bist enable latch is prese t. in this state, the transmit and receive channels are disabled, and bist is disabled. table 12. receive operating modes rx mode rxst status reporting mode number rxmode 0 l status a 1m reserved for test 2 h status b
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 21 of 43 following a device reset, it is necessary to enable the transmit and receive channels for normal operation. this can be done by sequencing the appropriate values on the boe[1:0] inputs while the oele and rxle signals are raised and lowered. for systems that do not require dynami c control of po wer, or want the part 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[1:0] signals to a stable high will then enable the transmit and receive channels as soon as the trstz signal is deasserted. output bus the 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. this mapping is shown in table 13 . when the 10b/8b decoder is bypassed (decmode = low), the framed 10-bit character is presented to the receiver output register, along with a status outp ut (comdet) indicating 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 ta b l e 1 4 . the comdet output is high when the character in the output register 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 is also enabled (rfmode = low, rxrate = high, and rxcksel = mid), the framer will st retch the recovered clock to the nearest 20-bit boundary such that the rising edge of rxclk+ occurs when comdet = high in the output register. 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 rxclk+ occurs when comdet = high in the output register. this adjustment only occurs when the framer is enabled (rfen = high). when the framer is disabled, the clock boundaries are not adjusted, and comdet may be asserted during the rising edge of rxclk? (if an odd number of characters were received following the initial framing). table 13. output register bit assignments [23] signal name decmode = low decmode = mid or high rxst[2] (lsb) comdet rxst[2] rxst[1] dout[0] rxst[1] rxst[0] dout[1] rxst[0] rxd[0] dout[2] rxd[0] rxd[1] dout[3] rxd[1] rxd[2] dout[4] rxd[2] rxd[3] dout[5] rxd[3] rxd[4] dout[6] rxd[4] rxd[5] dout[7] rxd[5] rxd[6] dout[8] rxd[6] rxd[7] (msb) dout[9] rxd[7] table 14. decoder bypass mode (decmode = low) signal name bus weight 10b name rxst[2] (lsb) comdet rxst[1] 2 0 a rxst[0] 2 1 b rxd[0] 2 2 c rxd[1] 2 3 d rxd[2] 2 4 e rxd[3] 2 5 i rxd[4] 2 6 f rxd[5] 2 7 g rxd[6] 2 8 h rxd[7] (msb) 2 9 j note 23. the rxop output is also driven from the output register, but its interpretation is under the separate control of parctl.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 22 of 43 parity generation in addition to the eleven data and status bits that are presented, an rxop parity output is also available. this allows the cyp(v)15g0101dxb to support odd parity generation. to handle a wide range of system environments, the cyp(v)15g0101dxb supports different forms of parity gener- ation (in addition to no parity). when the decoder is enabled (decmode ? low), parity can be generated on the rxd[7:0] character the rxd[7:0] character and rxst[2:0] status. when the decoder is bypassed (decmode = low), parity can be generated on the rxd[7:0] and rxst[1:0] bits the rxd[7:0] and rxst[2:0] bits. these modes differ in the number of bits which are included in the parity calculation. for all cases, 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 ta b l e 1 5 . parity generation is enabled through the 3-level select parctl input. when parctl = low, parity checking is disabled, and the rxop output is disabled (high z). when parctl = mid (open) and the decoder is enabled (decmode ? low), odd parity is generated for the received and decoded character in the rxd[7:0] signals and is presented on the rxop output. when parctl = mid (open) and the decoder is bypassed (decmode = low), odd parity is generated for the received and decoded character in th e rxd[7:0] and rxst[1:0] bit positions. when parctl = high, odd parity is generated for the txd[7:0] and the rxst[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 operati ons (regardless of the state of decmode) character violations. these conditions normally overlap; for example, 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 ta b l e 1 6 . within these status decodes, t here are three forms of status reporting. the two normal or data status reporting modes (type a and type b) are selectable through the rxmode input. these status types allow compat ibility with legacy systems, while allowing full reporti ng in new systems. the third status type is used for reporting receive bist status and progress. bist status state machine when the receive path is enabled to look for and compare the received data stream with the bist pattern, the rxst[2:0] bits identify the present state of the bist compare operation. the bist state machine has multiple states, as shown in figure 2 on page 24 and ta b l e 1 6 . 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 great er than 16, the state machine is forced to the wait_for_bist state where it monitors the interface for the first character (d 0.0) of the next bist sequence. also, if the elasticity buffer ever hits and overflow/underflow condition, the status is forced to the bist_start until the buffer is re-centered (approximately nine character periods). to ensure compatibility between the source and destination systems when operating in bist, the sending and receiving ends of the bist sequence must use the same clock setup (rxcksel = mid or rxcksel = low). table 15. output register parity generation signal name receive parity gene rate mode (parctl) low [24] mid high decmode = low decmode ? low rxst[2] x [25] rxst[1] x x rxst[0] x x rxd[0] x x x rxd[1] x x x rxd[2] x x x rxd[3] x x x rxd[4] x x x rxd[5] x x x rxd[6] x x x rxd[7] x x x notes 24. receive path parity output driver (rxop) is disabled (high z) when parctl = low. 25. when the decoder is bypassed (decmode = low) and bist is not enabl ed (receive bist latch output is high), rxst[2] is driven to a logic-0, except when the character in the output buffer is a framing character.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 23 of 43 jtag support the cyp(v)15g0101dxb 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)15g0101dxb is ?1c804069?x. 3-level select inputs each 3-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. table 16. receive character status bits rxst[2:0] priority description type-a status type-b status receive bist status (receive bist = enabled) 000 7 normal character received . the valid data character on the output bus meets all the formatting requireme nts of data characters listed in ta b l e 2 0 . bist data compare . character compared correctly 001 7 special code detected . the valid special character on the output bus meets all the formatting requirements of the special code characters listed in ta b l e 2 1 , but is not the presently selected framing character or a decoder violation indication. bist command compare . character compared correctly 010 2 receive elasticity buffer underrun/overrun error . the receive buffer was not able to add/drop a k28.5 or framing character. reserved bist last good . last character of bist sequence detected and valid. 011 5 framing character detected . this indicates that a character matching the patterns identified as a framing char acter (as selected by framchar) was detected. the decoded value of this ch aracter is present on the output bus. reserved 100 4 codeword violation . the character on the output bus is a c0.7. this indicates that the received characte r cannot be decoded into any valid character. bist last bad . last character of bist sequence detected invalid. 101 1 pll out of lock . this indicates a pll out of lock condition. 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. 110 6 running disparity error . the character on the output bus is a c4.7, c1.7, or c2.7. bist error . while comparing characters, a mismatch was found in one or more of the decoded character bits. 111 3 reserved bist wait . the receiver is comparing characters. but has not yet found the start of bist character to enable the lfsr.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 24 of 43 receive bist detected low monitor data received rxst = bist_start (101) no rx pll out of lock yes, rxst = bist_data_compare (000) or bist_command_compare(001) compare next character auto-abort condition mismatch end-of-bist state yes, rxst = bist_last_bad (100) ye s no no, rxst = bist_error (110) data or command match command rxst = bist_command_compare (001) end-of-bist state data yes, rxst = bist_last_good (010) no rxst = bist_data_compare (000) figure 2. receive bist state machine elasticity buffer error start of bist detected rxst = bist_wait (111) ye s rxst = bist_start (101) no
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 25 of 43 maximum ratings exceeding maximum ratings may shorten the useful life of the device. user guidelines are not tested. storage temperature... ............... ............... ?65 c to +150 c ambient temperature with power applied ............. ............... ............... ?55 c to +125 c supply voltage to ground potenti al ...............?0.5 v to +3.8 v dc voltage applied to lvttl outputs in high z state...................................... ?0.5 v to v cc + 0.5 v output current into lvttl outputs (low) ................... 60 ma dc input voltage .................................. ?0.5 v to v cc + 0.5 v static discharge voltage........................................... > ? 2000 v (per mil-std-883, method 3015) latch-up current ..................................................... > 200 ma power-up requirements the cyp(v)15g0101dxb requires one power-supply. the voltage on any input or i/o pin cannot exceed the power pin during power-up. operating range range ambient temperature v cc commercial 0 c to +70 c +3.3 v ? 5% industrial ?40 c to +85 c +3.3 v ? 5% dc electrical characteristics over the operating range parameter description test conditions min max unit lvttl-compatible outputs v oht output high voltage i oh = ? 4 ma, v cc = min 2.4 v cc v v olt output low voltage i ol = 4 ma, v cc = min 0 0.4 v i ost output short circuit current v out = 0v [26] ?20 ?100 ma i ozl high z output leakage current ?20 20 a lvttl-compatible inputs v iht input high voltage 2.0 v cc + 0.3 v v ilt input low voltage ?0.5 0.8 v i iht input high current refclk input, v in = v cc ? 1.5 ma other inputs, v in = v cc ? +40 a i ilt input low current refclk input, v in = 0.0 v ? ?1.5 ma other inputs, v in = 0.0 v ? -40 a i ihpdt input high current with internal pull-down v in = v cc ? +200 a i ilput input low current wi th internal pull-up v in = 0.0 v ? ?200 a lvdiff inputs: refclk ? v diff [27] input differential voltage 400 v cc mv v ihhp highest input high voltage 1.2 v cc v v illp lowest input low voltage 0.0 v cc / 2 v v comref [28] common mode range 1.0 v cc ? 1.2 v 3-level inputs v ihh 3-level input high voltage min ? v cc ? max 0.87 v cc v cc v v imm 3-level input mid voltage min ? v cc ? max 0.47 v cc 0.53 v cc v v ill 3-level input low voltage min ? v cc ? max 0.0 0.13 v cc v i ihh input high current v in = v cc ? 200 a i imm input mid current v in = v cc /2 ?50 50 a i ill input low current v in = gnd ? ?200 a differential cml serial outputs: out1 ? , out2 ? v ohc output high voltage (v cc referenced) 100 ? differential load v cc ? 0.5 v cc ??? 0.2 v 150 ? differential load v cc ??? 0.5 v cc ??? 0.2 v notes 26. tested one output at a time, output shorted for less than one second, less than 10% duty cycle. 27. this is the minimum difference in voltage between the true and complement inputs required to ensure detection of a logic-1 o r 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. 28. 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.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 26 of 43 ac test loads and waveforms v olc output low voltage (v cc referenced) 100 ? differential load v cc ??? 1.4 v cc ??? 0.7 v 150 ? differential load v cc ??? 1.4 v cc ??? 0.7 v v odif output differential voltage |(out+) ? (out ? )| 100 ? differential load 450 900 mv 150 ? differential load 560 1000 mv differential serial line receiver inputs: in1 ? , in2 ? v diffs [29] input differential voltage |(in+) ? (in ? )| 100 1200 mv v ihe highest input high voltage ? v cc v v ile lowest input low voltage v cc ? 2.0 ? v i ihe input high current v in =v ihe max ? 1350 a i ile input low current v in =v ile min ?700 ? a v com [30, 31] common mode input range v cc ? 1.95 v cc ? 0.05 v power supply typ [33] max [32] unit i cc power supply current refclk= max commercial 390 500 ma industrial 510 ma i cc power supply current refclk = 125 mhz commercial 390 500 ma industrial 510 ma dc electrical characteristics over the operating range (continued) parameter description test conditions min max unit 2.0 v 0.8 v gnd 2.0 v 0.8 v 80% 20% 80% 20% r l 3.0 v v th = 1.4 v ? 270 ps ? 270 ps [35] v th = 1.4 v 3.3 v r1 r2 r1 = 590 ? r2 = 435 ? (includes fixture and probe capacitance) c l ? 7 pf (a) lvttl output test load r l = 100 ? (b) cml output test load c l (c) lvttl input test waveform (d) cml/lvpecl input test waveform ? 1ns ? 1 ns v ihe v ile v ihe v ile [34] [34] notes 29. this is the minimum difference in voltage between the true and complement inputs required to ensure detection of a logic-1 o r 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. 30. 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. 31. not applicable for ac-coupled interfac es. for ac-coupled interfaces, v diffs requirement still needs to be satisfied. 32. maximum i cc is measured with v cc = max, with all serial drivers enabled, parallel outputs unloaded, sending a alternating 01 pattern to the serial input receiver. 33. typical i cc is measured under similar conditions except with v cc = 3.3v, t a = 25c, parallel outputs unloaded, rxcksel = mid, and with one serial line driver sending a continuous alternating 01 pattern to the serial input receiver. 34. cypress uses constant current (ate) load configurations and forcing functions. this figure is for reference only. 5pf differ ential load reflects tester capacitance, and is recommended at low data rates only. 35. the lvttl switching threshold is 1.4v. al l timing references are made relative to the point where the signal edges crosses t his threshold voltage.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 27 of 43 cyp(v)15g0101dxb ac characteristics over the operating range parameter description min max unit transmitter lvttl switching characteristics f ts txclk clock frequency 19.5 150 mhz t txclk txclk period 6.66 51.28 ns t txclkh [36] txclk high time 2.2 ? ns t txclkl [36] txclk low time 2.2 ? ns t txclkr [36, 37, 38] txclk rise time 0.2 1.7 ns t txclkf [36, 37, 38] txclk fall time 0.2 1.7 ns t txds transmit data det-up time to ? txclk ? (txcksel ? low) 1.7 ? ns t txdh transmit data hold time from txclk ?? (txcksel ? low) 0.8 ? ns f tos txclko clock frequency = 1x or 2x refclk frequency 19.5 150 mhz t txclko txclko period 6.66 51.28 ns t txclkod+ txclko+ duty cycle wi th 60% high time ?1.0 +0.5 ns t txclkod? txclko? duty cycle with 40% high time ?0.5 +1.0 ns receiver lvttl switching characteristics f rs rxclk clock output frequency 9.75 150 mhz t rxclkp rxclk period 6.66 102.56 ns t rxclkh rxclk high time (rxrate = low) 2.33 [36] 26.64 ns rxclk high time (rxrate = high) 5.66 52.28 ns t rxclkl rxclk low time (rxrate = low) 2.33 [36] 26.64 ns rxclk low time (rxrate = high) 5.66 52.28 ns t rxclkd rxclk duty cycle centered at 50% ?1.0 +1.0 ns t rxclkr [36] rxclk rise time 0.3 1.2 ns t rxclkf [36] rxclk fall time 0.3 1.2 ns t rxdv? [39] status and data valid time to rxclk (rxcksel = mid) 5ui ? 1.5 ? ns status and data valid time to rxclk ? (half rate recovered clock) 5ui ? 1.0 ? ns t rxdv+ [39] status and data valid time from rxclk ? (rxcksel = mid) 5ui ? 1.8 ? ns status and data valid time from rxclk ? (half rate recovered clock) 5ui ? 2.3 ? ns refclk switching characteristics over the operating range f ref refclk clock frequency 19.5 150 mhz t refclk refclk period 6.6 51.28 ns t refh refclk high time (txrate = high) 5.9 ? ns refclk high time (txrate = low) 2.9 [36] ? ns t refl refclk low time (txrate = high) 5.9 ? ns refclk low time (txrate = low) 2.9 [36] ? ns t refd [40] refclk duty cycle 30 70 % t refr [36, 37, 38] refclk rise time (20% ? 80%) ? 2 ns t reff [36, 37, 38] refclk fall time (20% ? 80%) ? 2 ns t trefds transmit data setup time to ? refclk (txcksel ?? low) 1.7 ? ns t trefdh transmit data hold time from refclk ? (txcksel ?? low) 0.8 ? ns notes 36. tested initially and after any design or process changes that may affect t hese parameters, but not 100% tested. 37. the ratio of rise time to falling time must not vary by greater than 2:1. 38. for a given operating frequency, neither rise or fall specific ation can be greater than 20% of the clock-cycle period or the data sheet maximum time. 39. parallel data output specifications are only valid if all inputs or outputs are loaded with similar dc and ac loads. 40. the duty cycle specification is a simultaneous condition with the t refh and t refl parameters. this means that at faster character rates the refclk duty cycle cannot be as large as 30%?70%.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 28 of 43 t rrefda [43] receive data access time from refclk (rxcksel ?? low) ? 9.5 ns t rrefdv receive data valid time from refclk ? (rxcksel ?? low) 2.5 ? ns t refdv? received data valid time to rxclk (rxcksel = low) 10ui ? 4.7 ? ns t refdv+ received data valid time from rxclk (rxcksel = low) 0.5 ? ns t refcdv? received data valid time to rxclkc (rxcksel = low) 10ui ? 4.3 ? ns t refcdv+ received data valid time fr om rxclkc (rxcksel = low) ?0.2 ? ns t refrx [41, 42] refclk frequency referenced to extracted received clock frequency ?1500 +1500 ppm transmit serial outputs and tx pll characteristics t b bit time 5100 666 ps t rise [42] cml output rise time 20%?80% (cml test load) spdsel = high 60 270 ps spdsel = mid 100 500 ps spdsel = low 180 1000 ps t fall [42] cml output fall time 80%?20% (cml test load) spdsel = high 60 270 ps spdsel = mid 100 500 ps spdsel = low 180 1000 ps t dj [42, 44, 46] deterministic jitter (peak-peak) ieee 802.3z [47] ? 25 ps t rj [42, 45, 46] random jitter ( ? ) ieee 802.3z [47] ? 11 ps t txlock transmit pll lock to refclk ? 200 us receive serial inputs and cdr pll characteristics t rxlock receive pll lock to input data stream (cold start) ? 376k ui [48] receive pll lock to input data stream ? 376k ui t rxunlock receive pll unlock rate ? 46 ui t jtol [46] total jitter tolerance ieee 802.3z [47] 600 ? ps t djtol [46] deterministic jitter tolerance ieee 802.3z [47] 370 ? ps capacitance [42] parameter description test conditions max unit c inttl ttl input capacitance t a = 25 c, f 0 = 1 mhz, v cc = 3.3 v 7 pf c inpecl pecl input capacitance t a =25 c, f 0 =1 mhz, v cc = 3.3 v 4 pf notes 41. refclk has no phase or frequency relationship with the recover ed clock(s) and only acts as a centering reference to reduce c lock synchronization time. refclk must be within 1500 ppm (0.15%) of the remote transmitter?s pll reference (refclk) frequency. although transmitting to a hotl ink ii receiver necessitates the frequency difference between the transmitt er and receiver reference clocks to be within 1500 ppm, the stability of the cry stal 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, t o be ieee 802.3z gigabit ethernet compliant, the frequency stability of the crystal needs to be within 100 ppm. 42. tested initially and after any design or process changes that may affect t hese parameters, but not 100% tested. 43. since this timing parameter is greater than the minimum time period of refclk it sets an upper limit to the frequency in whi ch refclkx can be used to clock the receive data out of the output register. for predictable timi ng, users can use this parameter only if refclk period is grea ter than sum of t rrefda 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. 44. while sending continuous k28.5s , outputs loaded to a balanced 100 ? load, measured at the cross point of the differential outputs over the operating range. 45. 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. 46. total jitter is calculated at an assumed ber of 1e ?? 12. hence: total jitter (t j ) = (t rj * 14) + t dj . 47. also meets all jitter generation and jitter tolerance requiremen ts as specified by smpte 259m, smpte 292m, cpri, escon, fico n, fibre channel and dvb-asi. 48. receiver ui (unit interval) is calculated as 1/(f ref * 20) (when rxrate = high) or 1/(f ref * 10) (when rxrate = low) if no data is being received, or 1/(f ref * 20)(when rxrate = high) or 1/(f ref * 10) (when rxrate = low) of the remote transmitter if data is being received. in an operating link this is equivalent to t b cyp(v)15g0101dxb ac characteristics over the operating range (continued) parameter description min max unit
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 29 of 43 switching waveforms for th e hotlink ii transmitter notes 49. when refclk is configured for half-rate operation (txrate = high) and data is captured using refclk instead of txclk clock (txcksel = low), data is captured using both the rising and falling edges of refclk. 50. the txclko output is at twice the rate of refclk when txrate = high and same rate as refclk when txrate = low. txclko does n ot follow the duty cycle of refclk. 51. the rising edge of txclko output has no direct phase relationship to the refclk input. txclk txd[7:0], txct[1:0], t txdh t txds t txclk t txclkh t txclkl transmit interface write timing txop, scsel txcksel ? low refclk transmit interface t refclk t refh t refl t trefds t trefdh write timing txcksel = low txrate = low txd[7:0], txct[1:0], txop, scsel t trefdh transmit interface write timing txcksel = low txrate = high refclk t refclk t refl t refh note 49 txd[7:0], txct[1:0], txop, scsel t trefds t trefds t trefdh note 49 txclko t txclko transmit interface txclko timing txcksel = low txrate = high refclk t refclk t refl t refh note 50 note 51 t txclkod+ t txclkod ?
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 30 of 43 notes 52. the rising edge of txclko output has no direct phase relationship to the refclk input. 53. rxclk and rxclk+ are delayed versions of refclk when rxck sel = low, and are different in phase from each other. 54. when operated with a half-rate refclk, the setup and hold specifications for data relative to rxclk are relative to both ris ing and falling edges of the clock output txclko t txclko t txclkod+ t txclkod ? transmit interface txclko timing txcksel = low txrate = low refclk note 50 note 52 t refclk t refh t refl refclk rxd[7:0], rxst[2:0], t rrefdv t refclk t refh t refl receive interface read timing rxop rxcksel = low txrate = low rxclk t refdv+ t refdv ? note 53 t rrefda rxclkc+ t refcdv+ t refcdv ? refclk rxd[7:0], rxst[2:0], t rrefdv t refclk t refh t refl receive interface read timing rxop rxcksel = low txrate = high t rrefda rxclk t refdv+ t refdv ? note 53 note 54 t rrefda t rrefdv rxclkc+ t refcdv+ t refcdv ?
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 31 of 43 rxclk+ rxd[7:0], rxst[2:0], t rxdv+ t rxclkp t rxclkh t rxclkl receive interface read timing rxop rxcksel = mid rxrate = low rxclk ? t rxdv ? rxclk+ rxd[7:0], rxst[2:0], t rxdv+ t rxclkp t rxclkh t rxclkl receive interface read timing rxop rxcksel = mid rxrate = high rxclk ? t rxdv ?
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 32 of 43 table 17. package coordinate signal allocation ball id signal name signal type ball id signal name signal type ball id signal name signal type a1 vcc power d5 gnd ground g9 txclko+ lvttl out a2 in2+ cml in d6 gnd ground g10 txclko? lvttl out a3 vcc power d7 gnd ground h1 rxd[0] lvttl out a4 out2? cml out d8 tms lvttl in pu h2 rxd[2] lvttl out a5 rxmode 3-level sel d9 trstz lvttl in pu h3 rxd[6] lvttl out a6 txmode[1] 3-level sel d10 tdi lvttl in pu h4 lfi lvttl out a7 in1+ cml in e1 bistle lvttl in pu h5 txct[1] lvttl in a8 vcc power e2 decmode 3-level sel h6 txd[6] lvttl in a9 out1? cml out e3 oele lvttl in pu h7 txd[3] lvttl in a10 vcc power e4 gnd ground h8 txclk lvttl in pd b1 vcc power e5 gnd ground h9 txrst lvttl in pu b2 in2? cml in e6 gnd ground h10 #nc no connect b3 tdo lvttl 3-s out e7 gnd ground j1 vcc power b4 out2+ cml out e8 tclk lvttl in pd j2 rxd[3] lvttl out b5 txrate lvttl in pd e9 rxcksel 3-level sel j3 rxd[7] lvttl out b6 txmode[0] 3-level sel e10 txcksel 3-level sel j4 rxclk? lvttl out b7 in1? cml in f1 rxst[2] lvttl out j5 txct[0] lvttl in b8 #nc no connect f2 rxst[1] lvttl out j6 txd[5] lvttl in b9 out1+ cml out f3 rxst[0] lvttl out j7 txd[2] lvttl in b10 vcc power f4 gnd ground j8 txd[0] lvttl in c1 rfen lvttl in pd f5 gnd ground j9 #nc no connect c2 lpen lvttl in pd f6 gnd ground j10 vcc power c3 rxle lvttl in pu f7 gnd ground k1 vcc power c4 rxclkc+ lvttl 3-s out f8 txper lvttl out k2 rxd[4] lvttl out c5 rxrate lvttl in pd f9 refclk? pecl in k3 vcc power c6 sdasel 3-level sel f10 refclk+ pecl in k4 rxclk+ lvttl out c7 spdsel 3-level sel g1 rxop lvttl 3-s out k5 txd[7] lvttl in c8 parctl 3-level sel g2 rxd[1] lvttl out k6 txd[4] lvttl in c9 rfmode 3-level sel g3 rxd[5] lvttl out k7 txd[1] lvttl in c10 insel lvttl in g4 gnd ground k8 vcc power d1 boe[0] lvttl in pu g5 gnd ground k9 scsel lvttl in pd d2 boe[1] lvttl in pu g6 gnd ground k10 vcc power d3 framchar 3-level sel g7 gnd ground d4 gnd ground g8 txop lvttl in pu
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 33 of 43 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 trans- mission 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 eigh t-bit data, and the letters a, b, c, d, e, i, f, g, h, j for encoded 10-bit data. there is a correspon- dence 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, respec- tively, 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?76543210 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, not e 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 trans- mission code: bits: abcdei fghj 101001 0101 each valid transmission characte r 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 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 patter ns 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. frana szek. ?a dc-balanced, parti- tioned-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 balanc ed (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 archit ecture/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 charac ters are labeled a, b, c, d, e, i, f, g, h, j. bit ?a ? is transmitted first follow ed 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 transmitter
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 34 of 43 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 (transmitter?s running disparity) and that have been received (receiver?s running disparity). running disparity for a transmission character is calculated from sub-blocks, where the fi rst 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 runni ng disparity at the end of the six-bit sub-block. running disparity at the end of the trans- mission character is the runni ng 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 an y 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 th e end of the four-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 the table is found for the valid data byte or the special character byte for which a transmission character is to be generated (encoded). the current value of the transmitter?s running di sparity is used to select the transmission character from its corresponding column. for each trans- mission character transmitted, a new value of the running disparity is calculated. this new value is used as the trans- mitter?s current running disparity for the next valid data byte or special character byte to be encoded and transmitted. ta b l e 1 8 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 receiver?s 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 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 tr ansmission character?s validity, the received transmission character is used to calculate a new value of running disparity. the new value is used as the receiver?s current running disparity for the next received trans- mission character. 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 ma y 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. ta b l e 1 9 shows an example of this behavior. table 18. valid transmission characters data byte name d in or q out hex value 765 43210 d0.0 000 00000 00 d1.0 000 00001 01 d2.0 000 00010 02 . . . . . . . . d5.2 010 00101 45 . . . . . . . . d30.7 111 11110 fe d31.7 111 11111 ff table 19. code violations resulting from prior errors rd character rd character rd character rd transmitted data character ? d21.1 ? d10.2 ? d23.5 + transmitted bit stream ? 101010 1001 ? 010101 0101 ? 111010 1010 + bit stream after error ? 101010 1011 + 010101 0101 + 111010 1010 + decoded data character ? d21.0 + d10.2 + code violation +
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 35 of 43 table 20. valid data characters (txctx[0] = 0, rxstx[2:0] = 000) data byte name bits current rd ? current rd+ data byte name bits current rd ? current rd+ hgf edcba abcdei fghj abcdei fghj hgf edcba abcdei fghj abcdei fghj d0.0 000 00000 100111 0100 011000 1011 d0.1 001 00000 100111 1001 011000 1001 d1.0 000 00001 011101 0100 100010 1011 d1.1 001 00001 011101 1001 100010 1001 d2.0 000 00010 101101 0100 010010 1011 d2.1 001 00010 101101 1001 010010 1001 d3.0 000 00011 110001 1011 110001 0100 d3.1 001 00011 110001 1001 110001 1001 d4.0 000 00100 110101 0100 001010 1011 d4.1 001 00100 110101 1001 001010 1001 d5.0 000 00101 101001 1011 101001 0100 d5.1 001 00101 101001 1001 101001 1001 d6.0 000 00110 011001 1011 011001 0100 d6.1 001 00110 011001 1001 011001 1001 d7.0 000 00111 111000 1011 000111 0100 d7.1 001 00111 111000 1001 000111 1001 d8.0 000 01000 111001 0100 000110 1011 d8.1 001 01000 111001 1001 000110 1001 d9.0 000 01001 100101 1011 100101 0100 d9.1 001 01001 100101 1001 100101 1001 d10.0 000 01010 010101 1011 010101 0100 d10.1 001 01010 010101 1001 010101 1001 d11.0 000 01011 110100 1011 110100 0100 d11.1 001 01011 110100 1001 110100 1001 d12.0 000 01100 001101 1011 001101 0100 d12.1 001 01100 001101 1001 001101 1001 d13.0 000 01101 101100 1011 101100 0100 d13.1 001 01101 101100 1001 101100 1001 d14.0 000 01110 011100 1011 011100 0100 d14.1 001 01110 011100 1001 011100 1001 d15.0 000 01111 010111 0100 101000 1011 d15.1 001 01111 010111 1001 101000 1001 d16.0 000 10000 011011 0100 100100 1011 d16.1 001 10000 011011 1001 100100 1001 d17.0 000 10001 100011 1011 100011 0100 d17.1 001 10001 100011 1001 100011 1001 d18.0 000 10010 010011 1011 010011 0100 d18.1 001 10010 010011 1001 010011 1001 d19.0 000 10011 110010 1011 110010 0100 d19.1 001 10011 110010 1001 110010 1001 d20.0 000 10100 001011 1011 001011 0100 d20.1 001 10100 001011 1001 001011 1001 d21.0 000 10101 101010 1011 101010 0100 d21.1 001 10101 101010 1001 101010 1001 d22.0 000 10110 011010 1011 011010 0100 d22.1 001 10110 011010 1001 011010 1001 d23.0 000 10111 111010 0100 000101 1011 d23.1 001 10111 111010 1001 000101 1001 d24.0 000 11000 110011 0100 001100 1011 d24.1 001 11000 110011 1001 001100 1001 d25.0 000 11001 100110 1011 100110 0100 d25.1 001 11001 100110 1001 100110 1001 d26.0 000 11010 010110 1011 010110 0100 d26.1 001 11010 010110 1001 010110 1001 d27.0 000 11011 110110 0100 001001 1011 d27.1 001 11011 110110 1001 001001 1001 d28.0 000 11100 001110 1011 001110 0100 d28.1 001 11100 001110 1001 001110 1001 d29.0 000 11101 101110 0100 010001 1011 d29.1 001 11101 101110 1001 010001 1001 d30.0 000 11110 011110 0100 100001 1011 d30.1 001 11110 011110 1001 100001 1001 d31.0 000 11111 101011 0100 010100 1011 d31.1 001 11111 101011 1001 010100 1001 d0.2 010 00000 100111 0101 011000 0101 d0.3 011 00000 100111 0011 011000 1100 d1.2 010 00001 011101 0101 100010 0101 d1.3 011 00001 011101 0011 100010 1100 d2.2 010 00010 101101 0101 010010 0101 d2.3 011 00010 101101 0011 010010 1100
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 36 of 43 d3.2 010 00011 110001 0101 110001 0101 d3.3 011 00011 110001 1100 110001 0011 d4.2 010 00100 110101 0101 001010 0101 d4.3 011 00100 110101 0011 001010 1100 d5.2 010 00101 101001 0101 101001 0101 d5.3 011 00101 101001 1100 101001 0011 d6.2 010 00110 011001 0101 011001 0101 d6.3 011 00110 011001 1100 011001 0011 d7.2 010 00111 111000 0101 000111 0101 d7.3 011 00111 111000 1100 000111 0011 d8.2 010 01000 111001 0101 000110 0101 d8.3 011 01000 111001 0011 000110 1100 d9.2 010 01001 100101 0101 100101 0101 d9.3 011 01001 100101 1100 100101 0011 d10.2 010 01010 010101 0101 010101 0101 d10.3 011 01010 010101 1100 010101 0011 d11.2 010 01011 110100 0101 110100 0101 d11.3 011 01011 110100 1100 110100 0011 d12.2 010 01100 001101 0101 001101 0101 d12.3 011 01100 001101 1100 001101 0011 d13.2 010 01101 101100 0101 101100 0101 d13.3 011 01101 101100 1100 101100 0011 d14.2 010 01110 011100 0101 011100 0101 d14.3 011 01110 011100 1100 011100 0011 d15.2 010 01111 010111 0101 101000 0101 d15.3 011 01111 010111 0011 101000 1100 d16.2 010 10000 011011 0101 100100 0101 d16.3 011 10000 011011 0011 100100 1100 d17.2 010 10001 100011 0101 100011 0101 d17.3 011 10001 100011 1100 100011 0011 d18.2 010 10010 010011 0101 010011 0101 d18.3 011 10010 010011 1100 010011 0011 d19.2 010 10011 110010 0101 110010 0101 d19.3 011 10011 110010 1100 110010 0011 d20.2 010 10100 001011 0101 001011 0101 d20.3 011 10100 001011 1100 001011 0011 d21.2 010 10101 101010 0101 101010 0101 d21.3 011 10101 101010 1100 101010 0011 d22.2 010 10110 011010 0101 011010 0101 d22.3 011 10110 011010 1100 011010 0011 d23.2 010 10111 111010 0101 000101 0101 d23.3 011 10111 111010 0011 000101 1100 d24.2 010 11000 110011 0101 001100 0101 d24.3 011 11000 110011 0011 001100 1100 d25.2 010 11001 100110 0101 100110 0101 d25.3 011 11001 100110 1100 100110 0011 d26.2 010 11010 010110 0101 010110 0101 d26.3 011 11010 010110 1100 010110 0011 d27.2 010 11011 110110 0101 001001 0101 d27.3 011 11011 110110 0011 001001 1100 d28.2 010 11100 001110 0101 001110 0101 d28.3 011 11100 001110 1100 001110 0011 d29.2 010 11101 101110 0101 010001 0101 d29.3 011 11101 101110 0011 010001 1100 d30.2 010 11110 011110 0101 100001 0101 d30.3 011 11110 011110 0011 100001 1100 d31.2 010 11111 101011 0101 010100 0101 d31.3 011 11111 101011 0011 010100 1100 d0.4 100 00000 100111 0010 011000 1101 d0.5 101 00000 100111 1010 011000 1010 d1.4 100 00001 011101 0010 100010 1101 d1.5 101 00001 011101 1010 100010 1010 d2.4 100 00010 101101 0010 010010 1101 d2.5 101 00010 101101 1010 010010 1010 d3.4 100 00011 110001 1101 110001 0010 d3.5 101 00011 110001 1010 110001 1010 d4.4 100 00100 110101 0010 001010 1101 d4.5 101 00100 110101 1010 001010 1010 d5.4 100 00101 101001 1101 101001 0010 d5.5 101 00101 101001 1010 101001 1010 d6.4 100 00110 011001 1101 011001 0010 d6.5 101 00110 011001 1010 011001 1010 table 20. valid data characters (txctx[0] = 0, rxstx[2:0] = 000) (continued) data byte name bits current rd ? current rd+ data byte name bits current rd ? current rd+ hgf edcba abcdei fghj abcdei fghj hgf edcba abcdei fghj abcdei fghj
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 37 of 43 d7.4 100 00111 111000 1101 000111 0010 d7.5 101 00111 111000 1010 000111 1010 d8.4 100 01000 111001 0010 000110 1101 d8.5 101 01000 111001 1010 000110 1010 d9.4 100 01001 100101 1101 100101 0010 d9.5 101 01001 100101 1010 100101 1010 d10.4 100 01010 010101 1101 010101 0010 d10.5 101 01010 010101 1010 010101 1010 d11.4 100 01011 110100 1101 110100 0010 d11.5 101 01011 110100 1010 110100 1010 d12.4 100 01100 001101 1101 001101 0010 d12.5 101 01100 001101 1010 001101 1010 d13.4 100 01101 101100 1101 101100 0010 d13.5 101 01101 101100 1010 101100 1010 d14.4 100 01110 011100 1101 011100 0010 d14.5 101 01110 011100 1010 011100 1010 d15.4 100 01111 010111 0010 101000 1101 d15.5 101 01111 010111 1010 101000 1010 d16.4 100 10000 011011 0010 100100 1101 d16.5 101 10000 011011 1010 100100 1010 d17.4 100 10001 100011 1101 100011 0010 d17.5 101 10001 100011 1010 100011 1010 d18.4 100 10010 010011 1101 010011 0010 d18.5 101 10010 010011 1010 010011 1010 d19.4 100 10011 110010 1101 110010 0010 d19.5 101 10011 110010 1010 110010 1010 d20.4 100 10100 001011 1101 001011 0010 d20.5 101 10100 001011 1010 001011 1010 d21.4 100 10101 101010 1101 101010 0010 d21.5 101 10101 101010 1010 101010 1010 d22.4 100 10110 011010 1101 011010 0010 d22.5 101 10110 011010 1010 011010 1010 d23.4 100 10111 111010 0010 000101 1101 d23.5 101 10111 111010 1010 000101 1010 d24.4 100 11000 110011 0010 001100 1101 d24.5 101 11000 110011 1010 001100 1010 d25.4 100 11001 100110 1101 100110 0010 d25.5 101 11001 100110 1010 100110 1010 d26.4 100 11010 010110 1101 010110 0010 d26.5 101 11010 010110 1010 010110 1010 d27.4 100 11011 110110 0010 001001 1101 d27.5 101 11011 110110 1010 001001 1010 d28.4 100 11100 001110 1101 001110 0010 d28.5 101 11100 001110 1010 001110 1010 d29.4 100 11101 101110 0010 010001 1101 d29.5 101 11101 101110 1010 010001 1010 d30.4 100 11110 011110 0010 100001 1101 d30.5 101 11110 011110 1010 100001 1010 d31.4 100 11111 101011 0010 010100 1101 d31.5 101 11111 101011 1010 010100 1010 d0.6 110 00000 100111 0110 011000 0110 d0.7 111 00000 100111 0001 011000 1110 d1.6 110 00001 011101 0110 100010 0110 d1.7 111 00001 011101 0001 100010 1110 d2.6 110 00010 101101 0110 010010 0110 d2.7 111 00010 101101 0001 010010 1110 d3.6 110 00011 110001 0110 110001 0110 d3.7 111 00011 110001 1110 110001 0001 d4.6 110 00100 110101 0110 001010 0110 d4.7 111 00100 110101 0001 001010 1110 d5.6 110 00101 101001 0110 101001 0110 d5.7 111 00101 101001 1110 101001 0001 d6.6 110 00110 011001 0110 011001 0110 d6.7 111 00110 011001 1110 011001 0001 d7.6 110 00111 111000 0110 000111 0110 d7.7 111 00111 111000 1110 000111 0001 d8.6 110 01000 111001 0110 000110 0110 d8.7 111 01000 111001 0001 000110 1110 d9.6 110 01001 100101 0110 100101 0110 d9.7 111 01001 100101 1110 100101 0001 d10.6 110 01010 010101 0110 010101 0110 d10.7 111 01010 010101 1110 010101 0001 table 20. valid data characters (txctx[0] = 0, rxstx[2:0] = 000) (continued) data byte name bits current rd ? current rd+ data byte name bits current rd ? current rd+ hgf edcba abcdei fghj abcdei fghj hgf edcba abcdei fghj abcdei fghj
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 38 of 43 d11.6 110 01011 110100 0110 110100 0110 d11.7 111 01011 110100 1110 110100 1000 d12.6 110 01100 001101 0110 001101 0110 d12.7 111 01100 001101 1110 001101 0001 d13.6 110 01101 101100 0110 101100 0110 d13.7 111 01101 101100 1110 101100 1000 d14.6 110 01110 011100 0110 011100 0110 d14.7 111 01110 011100 1110 011100 1000 d15.6 110 01111 010111 0110 101000 0110 d15.7 111 01111 010111 0001 101000 1110 d16.6 110 10000 011011 0110 100100 0110 d16.7 111 10000 011011 0001 100100 1110 d17.6 110 10001 100011 0110 100011 0110 d17.7 111 10001 100011 0111 100011 0001 d18.6 110 10010 010011 0110 010011 0110 d18.7 111 10010 010011 0111 010011 0001 d19.6 110 10011 110010 0110 110010 0110 d19.7 111 10011 110010 1110 110010 0001 d20.6 110 10100 001011 0110 001011 0110 d20.7 111 10100 001011 0111 001011 0001 d21.6 110 10101 101010 0110 101010 0110 d21.7 111 10101 101010 1110 101010 0001 d22.6 110 10110 011010 0110 011010 0110 d22.7 111 10110 011010 1110 011010 0001 d23.6 110 10111 111010 0110 000101 0110 d23.7 111 10111 111010 0001 000101 1110 d24.6 110 11000 110011 0110 001100 0110 d24.7 111 11000 110011 0001 001100 1110 d25.6 110 11001 100110 0110 100110 0110 d25.7 111 11001 100110 1110 100110 0001 d26.6 110 11010 010110 0110 010110 0110 d26.7 111 11010 010110 1110 010110 0001 d27.6 110 11011 110110 0110 001001 0110 d27.7 111 11011 110110 0001 001001 1110 d28.6 110 11100 001110 0110 001110 0110 d28.7 111 11100 001110 1110 001110 0001 d29.6 110 11101 101110 0110 010001 0110 d29.7 111 11101 101110 0001 010001 1110 d30.6 110 11110 011110 0110 100001 0110 d30.7 111 11110 011110 0001 100001 1110 d31.6 110 11111 101011 0110 010100 0110 d31.7 111 11111 101011 0001 010100 1110 table 20. valid data characters (txctx[0] = 0, rxstx[2:0] = 000) (continued) data byte name bits current rd ? current rd+ data byte name bits current rd ? current rd+ hgf edcba abcdei fghj abcdei fghj hgf edcba abcdei fghj abcdei fghj
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 39 of 43 table 21. valid special character codes and sequences (txctx = special character code or rxstx[2:0] = 001) [55,56] s.c. code name s.c. byte name current rd ? abcdei fghj current rd+ abcdei fghj cypress alternate s.c. byte name [57] bits hgf edcba s.c. byte name [57] bits hgf edcba k28.0 c0.0 (c00) 000 00000 c28.0 (c1c) 000 11100 001111 0100 110000 1011 k28.1 [58] c1.0 (c01) 000 00001 c28.1 (c3c) 001 11100 001111 1001 110000 0110 k28.2 [58] c2.0 (c02) 000 00010 c28.2 (c5c) 010 11100 001111 0101 110000 1010 k28.3 c3.0 (c03) 000 00011 c28.3 (c7c) 011 11100 001111 0011 110000 1100 k28.4 [58] c4.0 (c04) 000 00100 c28.4 (c9c) 100 11100 001111 0010 110000 1101 k28.5 [58, 59] c5.0 (c05) 000 00101 c28.5 (cbc) 101 11100 001111 1010 110000 0101 k28.6 [58] c6.0 (c06) 000 00110 c28.6 (cdc) 110 11100 001111 0110 110000 1001 k28.7 [58, 60] c7.0 (c07) 000 00111 c28.7 (cfc) 111 11100 001111 1000 110000 0111 k23.7 c8.0 (c08) 000 01000 c23.7 (cf7) 111 10111 111010 1000 000101 0111 k27.7 c9.0 (c09) 000 01001 c27.7 (cfb) 111 11011 110110 1000 001001 0111 k29.7 c10.0 (c0a) 000 01010 c29.7 (cfd) 111 11101 101110 1000 010001 0111 k30.7 c11.0 (c0b) 000 01011 c30.7 (cfe) 111 11110 011110 1000 100001 0111 end of frame sequence eofxx [61] c2.1 (c22) 001 00010 c2.1 (c22) 001 00010 ? k28.5,dn.xxx0 +k28.5,dn.xxx1 code rule violation and svs tx pattern exception [60, 62] c0.7 (ce0) 111 00000 c0.7 (ce0) 111 00000 [66] 100111 1000 011000 0111 ? k28.5 [63] c1.7 (ce1) 111 00001 c1.7 (ce1) 111 00001 [66] 001111 1010 001111 1010 +k28.5 [64] c2.7 (ce2) 111 00010 c2.7 (ce2) 111 00010 [66] 110000 0101 110000 0101 running disparity violation pattern exception [65] c4.7 (ce4) 111 00100 c4.7 (ce4) 111 00100 [66] 110111 0101 001000 1010 notes 55. all codes not shown are reserved. 56. notation for special character code name is consistent with fibre channel and escon naming conventions. special character co de 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 p atterns (i.e., c0.0 through c31.7), or in hex notation (i.e., cnn where nn = the specified value between 00 and ff). 57. both the cypress and alternate encodings may be used for data tr ansmission to generate specific special character codes. the decoding process for received characters generates cypress codes or alternate code s as selected by the decmode configuration input. 58. these characters are used for control of escon interfaces. they can be sent as embedded commands or other markers when not o perating using escon protocols. 59. the k28.5 character is used for framing operations by the re ceiver. it is also the pad or fill character transmitted to main tain the serial link when no user data is available. 60. care must be taken when using this specia l character code. when a k28.7(c7.0) or svs(c0.7) is followed by a d11.x or d20.x,a n alias k28.5 sync character is created. these s equences can cause err oneous framing and should be avoided while rfen = high. 61. c2.1 = transmit either ? k28.5+ or +k28.5 ? as determined by current rd and modify the transmission c haracter 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 wher ein the second data byte is determined by the current rd. for example, to send ?eofdt? the c ontroller could issue the sequence c2.1 ? d21.4 ? d21.4 ? d21.4, and the hotlink transmitter 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 ?eof dti? the controller could issue the sequence c2.1 ? d10.4 ? d21.4 ? d21.4, and the hotlink 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 specia l character, since k28.5 is decoded as c5 .0, c1.7, or c2.7, and the subsequent bytes are decoded as data. 62. c0.7 = transmit a deliberate code rule violation. the code chosen for this function follows the normal running disparity rules. the re ceiver will only output this special character if the transmission characte r being decoded is not found in the tables. 63. 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. 64. 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 outpu t c2.7 if +k28.5 is received with rd ? , otherwise k28.5 is decoded as c5.0 or c1.7. 65. 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 dispar ity does not match. this might indicate that an error occurre d in a prior byte. 66. supported only for data transmission. the re ceive status for these conditions will be re ported by specific combinations of r eceive status bits.
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 40 of 43 ordering code definitions ordering information speed ordering code package name package type operating range standard cyp15g0101dxb-bbxc bb100 pb-free 100-ball grid array commercial standard cyp15g0101dxb-bbxi bb100 pb-free 100-ball grid array industrial standard cyv15g0101dxb-bbxc bb100 pb-free 100-ball grid array commercial x = temperature grade = c or i (c = commercial; i = industrial) x = pb-free bb = 100-ball bga fixed value part identifier company id: cy = cypress cy x15g0101 - x bb x dxb
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 41 of 43 package diagram figure 3. 100-ball thin ball grid array (11 11 1.4 mm) bb100 acronyms the following table lists the acro nyms that are used in this document. document conventions 51-85107 *d table 22. acronyms used in this datasheet acronym description bga ball grid array bist built-in self test i/o input/output jtag joint test action group pll phase-locked loop tms test mode select tdo test data out tdi test data in table 23. units of measure acronym description c degree celsius k ? kilohm a microampere s microsecond ma milliampere ms millisecond mv millivolt na nanoampere ? ohm pf picofarad vvolt wwatt
cyp15g0101dxb cyv15g0101dxb document number: 38-02031 rev. *n page 42 of 43 document history page document title: cyp15g0101dxb/cyv15g0101dxb single-channel hotlink ii? transceiver document number: 38-02031 revision ecn submission date orig. of change description of change ** 113123 05/20/02 tps new data sheet *a 119704 10/30/02 lnm changed txper description changed txclko description changed rxcksel to include rxclkc+ removed disparity reference from rfmode removed the low setting for framchar and related references removed references to atm transport changed the i ost boundary values changed v odif and v olc for cml output changed the t txclkr and t txclkf min. values changed t txds , t txdh , t trefds , and t trefdh changed t refdv? , t refcdv? , and t refcdv+ changed the jtag id from 0c804069 to 1c804069 added a section for characterization and standards compliance changed i/o type of rxclkc in i/o coordinates table *b 122209 12/28/02 rbi minor change document control corrected document history page *c 122546 02/13/03 cgx 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 *d 124994 04/15/03 pot changed cyp15g0101dxb to cy p(v)15g0101dxb 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 associat ed specifications accordingly *e 128366 7/3/03 pds rev ised the value of t rrefdv, t refadv+ and t refcdv+ *f 128835 7/31/03 kkv minor change: corrections due to editorial error - old f ile used for *e revision (reestablishing *d changes) *g 131898 12/10/03 pds w hen txcksel = mid or high, txrate = high is an in valid mode. made appropriate changes to reflect this invalid condition removed requirement of ac coupling fo r serial i/os for interfacing with lvpecl i/os changed lfi to asynchronous output expanded the cdr range controller?s permissible frequency offset between incoming serial signaling rate and reference clock from 200-ppm to 1500-ppm (changed parameter t refrx ) *h 211461 see ecn kkv minor change: package diagram isn?t legible in pdf *i 230621 see ecn lar updated package information in features list to reflect correct package *j 338721 see ecn sua added cyw15g0101dxb part nu mber for obsai rp3 compliance to support operating data rate upto 1540 mbaud. made changes to reflect obsai rp3 and cpr compliance. added pb-free package option for all parts listed in the datasheet. changed mbd to mbaud in spdsel pin description *k 2898355 03/24/2010 cgx removed inactive parts from ordering information. updated packaging information.
document number: 38-02031 rev. *n revised april 17, 2012 page 43 of 43 hotlink is a registered trademark, and hotlink ii and multiframe are trademarks, of cypress semiconductor corporation. cpri is a trademark of siemens ag. ibm and escon are registered trademarks, and ficon is a trademark, of international business machines. all products and company names mentioned in this document may be the trademarks of their respective holders. cyp15g0101dxb cyv15g0101dxb ? cypress semiconductor corporation, 2002-2012. the information contained herein is subject to change without notice. cypress s emiconductor corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a cypress product. nor does it convey or imply any license under patent or other rights. cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement wi th cypress. furthermore, cypress 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 products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies cypress against all charges. any source code (software and/or firmware) is owned by cypress semiconductor corporation (cypress) and is protected by and subj ect to worldwide patent protection (united states and foreign), united states copyright laws and internatio nal treaty provisions. cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the cypress source code and derivative works for the sole purpose of creating custom software and or firmware in su pport of licensee product to be used only in conjunction with a cypress integrated circuit as specified in the applicable agreement. any reproduction, modification, translation, compilation, or repre sentation of this source code except as specified above is prohibited without the express written permission of cypress. disclaimer: cypress makes no warranty of any kind, express or implied, with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. cypress reserves the right to make changes without further notice to t he materials described herein. cypress does not assume any liability arising out of the application or use of any product or circuit described herein. cypress does not authori ze 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? prod uct in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies cypress against all charges. use may be limited by and subject to the applicable cypress software license agreement. sales, solutions, and legal information worldwide sales and design support cypress maintains a worldwide network of offices, solution center s, manufacturer?s representatives, and distributors. to find t he office closest to you, visit us at cypress locations . products automotive cypress.co m/go/automotive clocks & buffers cypress.com/go/clocks interface cypress. com/go/interface lighting & power control cypress.com/go/powerpsoc cypress.com/go/plc memory cypress.com/go/memory optical & image sensing cypress.com/go/image psoc cypress.com/go/psoc touch sensing cyp ress.com/go/touch usb controllers cypress.com/go/usb wireless/rf cypress.com/go/wireless psoc solutions psoc.cypress.com/solutions psoc 1 | psoc 3 | psoc 5 *l 3053045 10/08/2010 cgx updated ordering information and added ordering code definitions . added acronyms and document conventions . minor edits and updated in new template. *m 3243269 04/28/2011 saac removed the following part numbers from the ordering information on page 40 since the parts are no longer active. (cdt 98703) a) cyp15g0101dxb-bbi b) cyv15g0101dxb-bbi c) cyw15g0101dxb-bbxi removed all references to the part cyw15g0101dxb from the datasheet (cdt 98703). *n 3589088 04/17/2012 saac removed the part number cyp15g0101dxb-bbc from the ordering infor- mation on page 40 as the part is no longer active. updated package diagram 51-85107 (from rev *c to *d). document title: cyp15g0101dxb/cyv15g0101dxb single-channel hotlink ii? transceiver document number: 38-02031 revision ecn submission date orig. of change description of change

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