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exar corporation 48720 kato road, fremont ca, 94538 ? (510) 668-7000 ? fax (510) 668-7017 ? www.exar.com xrt86vl34 quad t1/e1/j1 framer/liu combo - hardware description january 2007 rev. v1.2.0 general description the xrt86vl34 is a four-channel 1.544 mbit/s or 2.048 mbit/s ds1/e1/j1 framer and liu integrated solution featuring r 3 technology (relayless, reconfigurable, redundancy). the physical interface is optimized with internal impedance, and with the patented pad structure, the xrt86vl34 provides protection from power failures and hot swapping. the xrt86vl34 contains an integrated ds1/e1/j1 framer and liu which provide ds1/e1/j1 framing and error accumulation in accordance with ansi/itu_t specifications. each framer has its own framing synchronizer and transmit-receive slip buffers. the slip buffers can be independently enabled or disabled as required and can be configured to frame to the common ds1/e1/j1 signal formats. each framer block contains its own transmit and receive t1/e1/j1 framing function. there are 3 transmit hdlc controllers per channel which encapsulate contents of the transmit hdlc buffers into lapd message frames. there are 3 receive hdlc controllers per channel which extract the payload content of receive lapd message frames from the incoming t1/e1/j1 data stream and write the contents into the receive hdlc buffers. each framer also contains a transmit and overhead data input port, which permits data link terminal equipment direct access to the outbound t1/e1/j1 frames. likewise, a receive overhead output data port permits data link terminal equipment direct access to the data link bits of the inbound t1/e1/j1 frames. the xrt86vl34 fully meets all of the latest t1/e1/j1 specifications: ansi t1/e1.107-1988, ansi t1/ e1.403-1995, ansi t1/e1.231-1993, ansi t1/ e1.408-1990, at&t tr 62411 (12-90) tr54016, and itu g-703, g.704, g706 and g.733, at&t pub. 43801, and ets 300 011, 300 233, jt g.703, jt g.704, jt g706, i.431. extensive test and diagnostic functions include loop-backs, boundary scan, pseudo random bit sequence (prbs) test pattern generation, performance monitor, bit error rate (ber) meter, forced error insertion, and lapd unchannelized data payload processing according to itu-t standard q.921. applications and features (next page) f igure 1. xrt86vl34 4- channel ds1 (t1/e1/j1) f ramer /liu c ombo performance monitor prbs generator & analyser hdlc/lapd controllers liu & loopback control dma interface signaling & alarms jtag wr ale_as rd rdy_dtack p select a[13:0] d[7:0] microprocessor interface 4 3 tx serial clock rx serial clock 8khz sync osc back plane 1.544-16.384 mbit/s local pcm highway st-bus 2-frame slip buffer elastic store tx serial data in tx liu interface 2-frame slip buffer elastic store rx liu interface rx framer rx serial data out rtip rring ttip tring external data link controller tx overhead in rx overhead out xrt86vl34 1 of 4-channels tx framer llb lb system (terminal) side line side 1:1 turns ratio 1:2 turns ratio memory intel/motorola p configuration, control & status monitor rxlos txon int
xrt86vl34 2 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 applications ? high-density t1/e1/j1 interfaces for multiplexers, switches, lan routers and digital modems ? sonet/sdh terminal or add/drop multiplexers (adms) ? t1/e1/j1 add/drop multiplexers (mux) ? channel service units (csus): t1/e1/j1 and fractional t1/e1/j1 ? digital access cross-connect system (dacs) ? digital cross-connect systems (dcs) ? frame relay switches and access devices (frads) ? isdn primary rate interfaces (pra) ? pbxs and pcm channel bank ? t3 channelized access concentrators and m13 mux ? wireless base stations ? atm equipment with integrated ds1 interfaces ? multichannel ds1 test equipment ? t1/e1/j1 performance monitoring ? voice over packet gateways ? routers features ? four independent, full duplex ds1 tx and rx framer/lius ? two 512-bit (two-frame) elastic store, pcm frame slip buffers (fifo) on tx and rx provide up to 8.192 mhz asynchronous back plane connections with jitter and wander attenuation ? supports input pcm and signaling data at 1.544, 2.048, 4.096 and 8.192 mbits. also supports 4-channel multiplexed 12.352/16.384 (hmvip/h.100) mbit/s on the back plane bus ? programmable output clocks for fractional t1/e1/j1 ? supports channel associated signaling (cas) ? supports common ch annel signalling (ccs) ? supports isdn primary rate interface (isdn pri) signaling ? extracts and inserts robbed bit signaling (rbs) ? 3 integrated hdlc controllers per channel for transmit and receive, each controller having two 96-byte buffers (buffer 0 / buffer 1) ? hdlc controllers support ss7 ? timeslot assignable hdlc ? v5.1 or v5.2 interface ? automatic performance report generation (pmon status) can be inserted into the transmit lapd interface every 1 second or for a single transmission ? alarm indication signal with customer installation signature (ais-ci) ? remote alarm indication with customer installation (rai-ci) ? gapped clock interface mode for transmit and receive.
xrt86vl34 3 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description ? intel/motorola and power pc interfaces for configuration, control and status monitoring ? parallel search algorithm for fast frame synchronization ? wide choice of t1 framing structures: sf/d4, esf, slc ? 96, t1dm and n-frame (non-signaling) ? direct access to d and e channels for fast transmission of data link information ? prbs, qrss, and network loop code generation and detection ? programmable interrupt output pin ? supports programmed i/o and dma modes of read-write access ? each framer block encodes and decodes the t1/e1/j1 frame serial data ? detects and forces red (sai), yellow (rai) and blue (ais) alarms ? detects oof, lof, los errors and cofa conditions ? loopbacks: local (llb) and line remote (lb) ? facilitates inverse multiplexing for atm ? performance monitor with one second polling ? boundary scan (ieee 1149.1) jtag test port ? accepts external 8khz sync reference ? 1.8v inner core ? 3.3v cmos operation with 5v tolerant inputs ? 225-pin pbga package with -40 c to +85 c operation ordering information p art n umber p ackage o perating t emperature r ange xrt86vl34ib 225 plastic ball grid array -40 c to +85 c
xrt86vl34 i quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 list of paragraphs 1.0 pin descriptions ........................................................................................................ ......................6
xrt86vl34 a rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description list of tables table 1:: list by pin number .................................................................................................. ........................................... 4 table 2:: .................................................................................................................... ........................................................ 6 table 3:: pin description structure ........................................................................................... ......................................... 6 table 4:: xrt86vl34 power consumption ........................................................................................ ............................ 41 table 5:: e1 receiver electrical characteristics .............................................................................. ................................ 49 table 6:: t1 receiver electrical characteristics .............................................................................. ................................ 50 table 7:: e1 transmitter electrical characteristics ........................................................................... ............................... 50 table 8:: e1 transmit return loss requirement ................................................................................. ........................... 51 table 9:: t1 transmitter electrical characteristics ........................................................................... ............................... 51 table 10:: transmit pulse mask specification .................................................................................. ............................... 52 table 11:: dsx1 interface isolated pulse mask and corner points ............................................................... ................... 53 table 12:: ac electrical characteristics ...................................................................................... .................................... 54 table 13:: intel microprocessor interface timing specifications ............................................................... ...................... 55 table 14:: intel microprocessor interface timing specifications ............................................................... ...................... 56 table 15:: motorola asychronous mode microprocessor interface timing specifications ........................................... ... 57 table 16:: power pc 403 microprocessor interface timing specifications ........................................................ ............. 58
xrt86vl34 i quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 list of figures figure 1.: xrt86vl34 4-channel ds1 (t1/e1/j1) framer/liu combo ................................................................ ............. 1 figure 2.: framer system transmit timing diagram (base rate/non-mux) .......................................................... ......... 42 figure 3.: framer system receive timing diagram (rxserclk as an output) ....................................................... ..... 43 figure 4.: framer system receive timing diagram (rxserclk as an input) ........................................................ ....... 44 figure 5.: framer system transmit timing diagram (hmvip and h100 mode) ........................................................ ..... 45 figure 6.: framer system receive timing diagram (hmvip/h100 mode) ............................................................. ........ 46 figure 7.: framer system transmit overhead timing diagram ..................................................................... ................. 47 figure 8.: framer system receive overhead timing diagram (rxserclk as an output) ........................................... 48 figure 9.: framer system receive overhead timing diagram (rxserclk as an input) .............................................. 4 8 figure 10.: itu g.703 pulse template .......................................................................................... .................................. 52 figure 11.: dsx-1 pulse template (normalized amplitude) ....................................................................... ...................... 53 figure 12.: intel p interface timing during programmed i/o read and write operations when ale is not tied ?high? 55 figure 13.: intel p interface timing during programmed i/o read and write operations when ale is tied ?high? .. 56 figure 14.: motorola asychronous mode interface signals during programmed i/o read and write operations ......... 57 figure 15.: power pc 403 interface signals during programmed i/o read and write operations ............................... 58
xrt86vl34 4 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description t able 1: l ist by p in n umber p in p in n ame a1 gndpll a2 avdd18 a3 e1mclknout a4 mclkin a5 vss a6 trst a7 rxserclk0 a8 rxchclk0 a9 rxohclk0 a10 txmsync0 a11 txohclk0 a12 txserclk0 a13 txchclk0 a14 txchn0_3 a15 rxser1 a16 rxchclk1 a17 rxchn1_2 a18 rxsync1 b1 vddpll18 b2 jtag_ring b3 agnd b4 t1mclknout b5 atestmode b6 tdi b7 rxlos0 b8 dvdd18 b9 rxchn0_2 b10 rxchn0_4 b11 testmode b12 txchn0_0 b13 txchn0_2 b14 vss b15 rxchn1_1 b16 rxoh1 b17 rxcasync1 b18 txsync1 c1 gndpll c2 vddpll18 c3 jtag_tip c4 dvdd18 c5 dgnd c6 tms c7 tclk c8 rxcrcsync0 c9 rxchn0_1 c10 rxchn0_3 c11 rxoh0 c12 txoh0 c13 rxcrcsync1 c14 txchn0_4 c15 txchclk1 c16 vss c17 txmsync1 c18 rxlos1 d1 gndpll d2 vddpll18 d3 vddpll18 d4 gndpll d5 tdo d6 rxser0 d7 rxchn0_0 d8 rxsync0 d9 txsync0 d10 rxcasync0 d11 txser0 d12 txchn0_1 p in p in n ame d13 rxserclk1 d14 rxchn1_0 d15 rxserclk2 d16 vdd d17 rxohclk1 d18 rxchn1_3 e1 rtip0 e2 rgnd0 e3 rvdd0 e4 ttip0 e5 analog e15 txohclk1 e16 txser1 e17 rxchn1_4 e18 txserclk1 f1 rring0 f2 tgnd0 f3 tvdd0 f4 tring0 f15 txoh1 f16 txchn1_0 f17 txchn1_1 f18 rxsync2 g1 rtip1 g2 rgnd1 g3 rvdd1 g4 ttip1 g15 rxchn2_1 g16 rxlos2 g17 txchn1_2 g18 txchn1_3 h1 rring1 h2 tgnd1 h3 tvdd1 p in p in n ame h4 tring1 h15 rxcasync2 h16 rxchn2_0 h17 rxchclk2 h18 txchn1_4 j1 rtip2 j2 rgnd2 j3 rvdd2 j4 ttip2 j15 txserclk2 j16 dvdd18 j17 rxcrcsync2 j18 rxser2 k1 rring2 k2 tgnd2 k3 tvdd2 k4 tring2 k15 rxoh2 k16 rxchn2_4 k17 rxohclk2 k18 rxchn2_2 l1 rtip3 l2 rgnd3 l3 rvdd3 l4 ttip3 l15 txsync2 l16 rxchn2_3 l17 txmsync2 l18 txser2 m1 rring3 m2 tgnd3 m3 tvdd3 m4 tring3 m15 vss p in p in n ame
xrt86vl34 5 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 m16 vss m17 txchn2_1 m18 txchn2_0 n1 txon n2 lop n3 rxtsel n4 8kextosc n15 txchn2_4 n16 txchn2_3 n17 txchclk2 n18 txohclk2 p1 reset p2 e1oscclk p3 vdd p4 t1oscclk p15 txoh2 p16 rxsync3 p17 rxchnclk3 p18 rxoh3 r1 req0 r2 8ksync r3 req1 r4 vss r5 addr2 r6 addr6 r7 addr10 r8 int r9 addr11 r10 addr12 r11 data7 r12 txmsync3 r13 dvdd18 r14 txoh3 r15 vdd p in p in n ame r16 rxohclk3 r17 rxcrcsync3 r18 rxchn3_0 t1 faddr t2 ack0 t3 rdy t4 data0 t5 vss t6 addr3 t7 addr7 t8 ptype2 t9 vdd t10 data4 t11 txchn3_4 t12 txchn3_2 t13 txchn3_0 t14 rxchn3_3 t15 rxchn3_2 t16 txchn2_2 t17 rxserclk3 t18 rxcasync3 u1 iaddr u2 ack1 u3 data1 u4 dben u5 addr0 u6 addr4 u7 dvdd18 u8 ale u9 addr9 u10 blast u11 data6 u12 txchn3_3 u13 txchn3_1 p in p in n ame u14 rxchn3_4 u15 txsync3 u16 vss u17 rxser3 u18 rlos3 v1 pclk v2 ptype0 v3 rd v4 ptype1 v5 addr1 v6 addr5 v7 addr8 v8 data2 v9 data3 v10 data5 v11 addr13 v12 wr v13 cs v14 txser3 v15 txserclk3 v16 txohclk3 v17 txchclk3 v18 rxchn3_1 p in p in n ame
xrt86vl34 6 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description 1.0 pin descriptions there are five types of pins defined throughout this pin description and the corresponding symbol is presented in table below. the per-channel pin is indicated by the channel number or the letter ?n? which is appended at the end of the signal name, for example, txsern, where "n" indicates channels 0 to 3. all output pins are "tri- stated" upon hardware r eset . the structure of the pin description is divided into twelve groups, as presented in the table below t able 2: s ymbol p in t ype i input o output i/o bidirectional gnd ground pwr power t able 3: p in d escription s tructure s ection p age n umber transmit system side interface page 7 transmit overhead interface page 15 receive overhead interface page 17 receive system side interface page 18 receive line interface page 26 transmit line interface page 28 timing interface page 28 jtag interface page 30 microprocessor interface page 31 power pins (3.3v) page 39 power pins (1.8v) page 39 ground pins page 40
xrt86vl34 7 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 transmit system side interface s ignal n ame b all # t ype o utput d rive ( m a) d escription txser0/ txpos0 txser1/ txpos1 txser2/ txpos2 txser3/ txpos3 d11 e16 l18 v14 i - transmit serial data input (txsern)/transmit positive digital input (txposn): the exact function of these pins depends on the mode of operation selected, as described below. ds1/e1 mode - txsern these pins function as the transmit serial data input on the system side interface, which are latched on the rising edge of the txser - clkn pin. any payload data applied to this pin will be inserted into an outbound ds1/e1 frame and output to the line. in ds1 mode, the framing alignment bits, facility data link bits, crc-6 bits, and signaling information can also be inserted from this input pin if configured appropriately. in e1 mode, all data intended to be transported via time slots 1 through 15 and time slots 17 through 31 must be applied to this input pin. data intended for time slots 0 and 16 can also be applied to this input pin if configured accordingly. ds1 or e1 high-speed multiplexed mode* - txsern in this mode, these pins are used as the high-speed multiplexed data input pin on the system side. high-speed multiplexed data of chan - nels 0-3 must be applied to txser0 in a byte or bit-interleaved way. the framer latches in the multiplexed data on txser0 using txm - sync/txinclk and demultiplexes this data into 4 serial streams. the liu block will then output the data to the line interface using txserclkn. ds1 or e1 framer bypass mode - txposn in this mode, txsern is used for the positive digital input pin (txposn) to the liu. n ote : 1. *high-speed multiplexed modes include (for t1/e1) 16.384mhz hmvip, h.100, bit-multiplexed modes, and (for t1 only) 12.352mhz bit-multiplexed mode. 2. in ds1 high-speed modes, the ds-0 data is mapped into an e1 frame by ignoring every fourth time slot (don?t care). 3. these 8 pins are internally pulled ?high? for each channel.
xrt86vl34 8 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description txserclk0/ txlineclk0 txserclk1/ txlineclk1 txserclk2/ txlineclk2 txserclk3/ txlineclk3 a12 e18 j15 v15 i/o 12 transmit serial clock (txserclkn)/transmit line clock (txserclkn): the exact function of these pins depends on the mode of operation selected, as described below. in base-rate mode (1.544mhz/2.048mhz) - txserclkn: this clock signal is used by the transmit serial interface to latch the contents on the txsern pins into the t1/e1 framer on the rising edge of txserclkn. these pins can be configured as input or output as described below. when txserclkn is configured as input: these pins will be inputs if the txserclk is chosen as the timing source for the transmit framer. users must provide a 1.544mhz clock rate to this input pin for t1 mode of operation, and 2.048mhz clock rate in e1 mode. when txserclkn is configured as output: these pins will be outputs if either the recovered line clock or the mclk pll is chosen as the timing source for the t1/e1 transmit framer. the transmit framer will output a 1.544mhz clock rate in t1 mode of operation, and a 2.048mhz clock rate in e1 mode. ds1/e1 high-speed backplane modes* - txserclkn as input only in this mode, txserclk is an optional clock signal input which is used as the timing source for the transmit line interface, and is only required if txserclk is chosen as the timing source for the transmit framer. if txserclk is chosen as the timing source, system equip - ment should provide 1.544mhz (for t1 mode) or 2.048mhz (for e1 mode) to the txserclkn pins on each channel. txserclk is not required if either the recovered clock or mclk pll is chosen as the timing source of the device. high speed or multiplexed data is latched into the device using the txmsync/txinclk high-speed clock signal. ds1 or e1 framer bypass mode - txlineclkn in this mode, txserclkn is used as the transmit line clock (txli - neclk) to the liu. n ote : *high-speed backplane modes include (for t1/e1) 2.048mvip, 4.096mhz, 8.192mhz, 16.384mhz hmvip, h.100, bit-multiplexed modes, and (for t1 only) 12.352mhz bit-multiplexed mode. n ote : in ds1 high-speed modes, the ds-0 data is mapped into an e1 frame by ignoring every fourth time slot (don?t care). n ote : these 8 pins are internally pulled ?high? for each channel. transmit system side interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 9 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 txsync0/ txneg0 txsync1/ txneg1 txsync2/ txneg2 txsync3/ txneg3 d9 b18 l15 u15 i/o 12 transmit single frame sync pulse (txsyncn) / transmit nega - tive digital input (txnegn): the exact function of these pins depends on the mode of operation selected, as described below. ds1/e1 base rate mode (1.544mhz/2.048mhz) - txsyncn: these txsyncn pins are used to indicate the single frame boundary within an outbound t1/e1 frame. in both ds1 or e1 mode, the single frame boundary repeats every 125 microseconds (8khz). in ds1/e1 base rate, txsyncn can be configured as either input or output as described below. when txsyncn is configured as an input : users must provide a signal which must pulse "high" for one period of txserclk during the first bit of an outbound ds1/e1 frame. it is imperative that the txsync input signal be synchronized with the txserclk input signal. when txsyncn is configured as an output: the transmit t1/e1 framer will output a signal which pulses "high" for one period of txserclk during the first bit of an outbound ds1/e1 frame. ds1/e1 high-speed backplane modes* - txsyncn as input only: in this mode, txsyncn must be an input regardless of the clock source that is chosen to be the timing source for the transmit framer. in 2.048mvip/4.096/8.192mhz high-speed modes, txsyncn pins must be pulsed ?high? for one period of txserclk during the first bit of the outbound t1/e1 frame. in hmvip mode, txsync0 must be pulsed ?high? for 4 clock cycles of the txmsync/txinclk signal in the position of the first two and the last two bits of a multiplexed frame. in h.100 mode, txsync0 must be pulsed ?high? for 2 clock cycles of the txmsync/txinclk signal in the position of the first and the last bit of a multiplexed frame. ds1 or e1 framer bypass mode - txnegn in this mode, txsyncn is used as the negative digital input pin (txneg) to the liu. n ote : *high-speed backplane modes include (for t1/e1) 2.048mvip, 4.096mhz, 8.192mhz, 16.384mhz hmvip, h.100, bit-multiplexed modes, and (for t1 only) 12.352mhz bit-multiplexed mode. n ote : in ds1 high-speed modes, the ds-0 data is mapped into an e1 frame by ignoring every fourth time slot (don?t care). n ote : these 8 pins are internally pulled ?low? for each channel. transmit system side interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 10 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description txmsync0/ txinclk0 txmsync1/ txinclk1 txmsync2/ txinclk2 txmsync3/ txinclk3 a10 c17 l17 r12 i/o 12 multiframe sync pulse (txmsyncn) / transmit input clock (txin - clkn) the exact function of these pins depends on the mode of operation selected, as described below. ds1/e1 base rate mode (1.544mhz/2.048mhz) - txmsyncn in this mode, these pins are used to indicate the multi-frame boundary within an outbound ds1/e1 frame. in ds1 esf mode, txmsyncn repeats every 3ms. in ds1 sf mode, txmsyncn repeats every 1.5ms. in e1 mode, txmsyncn repeats every 2ms. if txmsyncn is configured as an input, txmsyncn must pulse "high" for one period of txserclk during the first bit of an outbound ds1/e1 multi-frame. it is imperative that the txmsync input signal be synchronized with the txserclk input signal. if txmsyncn is configured as an output, the transmit section of the t1/e1 framer will output and pulse txmsync "high" for one period of txserclk during the first bit of an outbound ds1/e1 frame. ds1/e1 high-speed backplane modes* - (txinclkn as input only) in this mode, txinclk0 must be used as the high-speed input clock pin for the backplane interface to latch in high-speed or multiplexed data on the txsern pin. the frequency of txinclk0 is presented in the table below. n otes : 1. *high-speed backplane modes include (for t1/e1) 2.048mvip, 4.096mhz, 8.192mhz, 16.384mhz hmvip, h.100, bit-multiplexed modes, and (for t1 only) 12.352mhz bit-multiplexed mode. 2. in ds1 high-speed modes, the ds-0 data is mapped into an e1 frame by ignoring every fourth time slot (don?t care). 3. these 8 pins are internally pulled ?low? for each channel. transmit system side interface s ignal n ame b all #t ype o utput d rive ( m a) d escription o peration m ode f requency of t x inclk0(mh z ) 2.048mvip non-multiplexed 2.048 4.096mhz non-multiplexed 4.096 8.192mhz non-multiplexed 8.192 12.352mhz bit-multiplexed (ds1 only) 12.352 16.384mhz bit-multiplexed 16.384 16.384 hmvip byte-multiplexed 16.384 16.384 h.100 byte-multiplexed 16.384
xrt86vl34 11 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 txchclk0 txchclk1 txchclk2 txchclk3 a13 c15 n17 v17 o 8 transmit channel clock output signal (txchclkn): the exact function of this pin depends on whether or not the transmit framer enables the transmit fractional/signaling interface to input frac - tional data, as described below. if transmit fractional/signaling interface is disabled: this pin indicates the boundary of each time slot of an outbound ds1/ e1 frame. in t1 mode, each of these output pins is a 192khz clock which pulses "high" during the lsb of each 24 time slots. in e1 mode, each of these output pins is a 256khz clock which pulses "high" dur - ing the lsb of each 32 time slots. the terminal equipment can use this clock signal to sample the txchn0 through txchn4 time slot identifier pins to determine which time slot is being processed. if transmit fractional/signaling interface is enabled: txchclkn is the fractional interface clock which either outputs a clock signal for the time slot that has been configured to input frac - tional data, or outputs an enable signal for the fractional time slot so that fractional data can be clocked into the device using the txser - clk pin. n ote : transmit fractional interface can be enabled by programming to bit 4 - txfr1544/txfr2048 bit from register 0xn120 to ?1?. transmit system side interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 12 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description txchn0_0/ txsig0 txchn1_0/ txsig1 txchn2_0/ txsig2 txchn3_0/ txsig3 b12 f16 m18 t13 i/o 8 transmit time slot octet identifier output 0 (txchnn_0) / trans - mit serial signaling input (txsign): the exact function of these pins depends on whether or not the trans - mit framer enables the transmit fractional/signaling interface, as described below: if transmit fractional/signaling interface is disabled - txchnn_0: these output pins (txchnn_4 through txchnn_0) reflect the five-bit binary value of the current time slot being processed by the transmit serial interface. terminal equipment can use the txchclk to sample the five output pins of each channel in order to identify the time slot being processed. this pin indicates the least significant bit (lsb) of the time slot channel being processed. if transmit fractional/signaling interface is enabled - txsign: these pins can be used to input robbed-bit signaling data to be inserted within an outbound ds1 frame or to input channel associ - ated signaling (cas) data within an outbound e1 frame, as described below. t1 mode: signaling data (a,b,c,d) of each channel must be provided on bit 4,5,6,7 of each time slot on the txsig pin if 16-code signaling is used. if 4-code signaling is selected, signaling data (a,b) of each channel must be provided on bit 4, 5 of each time slot on the txsig pin. if 2-code signaling is selected, signaling data (a) of each channel must be provided on bit 4 of each time slot on the txsig pin. e1 mode: signaling data in e1 mode can be provided on the txsign pins on a time-slot-basis as in t1 mode, or it can be provided on time slot 16 only via the txsign input pins. in the latter case, signaling data (a,b,c,d) of channel 1 and channel 17 must be inserted on the txsign pin during time slot 16 of frame 1, signaling data (a,b,c,d) of channel 2 and channel 18 must be inserted on the txsign pin during time slot 16 of frame 2...etc. the cas multiframe alignments bits (0000 bits) and the extra bits/alarm bit (xyxx) must be inserted on the txsign pin during time slot 16 of frame 0. n ote : transmit fractional interface can be enabled by programming to bit 4 - txfr1544/txfr2048 bit from register 0xn120 to ?1?. n ote : these 8 pins are internally pulled ?low? for each channel. transmit system side interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 13 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 txchn0_1/ txfrtd0 txchn1_1/ txfrtd1 txchn2_1/ txfrtd2 txchn3_1/ txfrtd3 d12 f17 m17 u13 i/o 8 transmit time slot octet identifier output 1 (txchnn_1) / trans - mit serial fractional input (txfrtdn): the exact function of these pins depends on whether or not the trans - mit framer enables the transmit fractional/signaling interface, as described below: if transmit fractional/signaling interface is disabled - txchnn_1 these output signals (txchnn_4 through txchnn_0) reflect the five- bit binary value of the current time slot being processed by the trans - mit serial interface. terminal equipment can use the txchclk to sample the five output pins of each channel in order to identify the time slot being processed. this pin indicates bit 1 of the time slot channel being processed. if transmit fractional/signaling interface is enabled - txfrtdn these pins are used as the fractional data input pins to input frac - tional ds1/e1 payload data which will be inserted within an outbound ds1/e1 frame. in this mode, terminal equipment can use either txchclk or txserclk to clock in fractional ds1/e1 payload data depending on the framer configuration. n otes : 1. transmit fractional/signaling interface can be enabled by programming to bit 4 - txfr1544/txfr2048 bit from register 0xn120 to ?1?. 2. these 8 pins are internally pulled ?low? for each channel. txchn0_2/ tx32mhz0 txchn1_2/ tx32mhz1 txchn2_2/ tx32mhz2 txchn3_2/ tx32mhz3 b13 g17 t16 t12 o 8 transmit time slot octet identifier output 2 (txchnn_2) / trans - mit 32.678mhz clock output (tx32mhz): the exact function of these pins depends on whether or not the trans - mit framer enables the transmit fractional/signaling interface, as described below: if transmit fractional/signaling interface is disabled - txchnn_2 these output signals (txchnn_4 through txchnn_0) reflect the five- bit binary value of the current time slot being processed by the trans - mit serial interface. terminal equipment can use the txchclk to sample the five output pins of each channel in order to identify the time slot being processed. this pin indicates bit 2 of the time slot channel being processed. if transmit fractional/signaling interface is enabled - tx32mhz these pins are used to output a 32.678mhz clock reference which is derived from the mclkin input pin. n ote : transmit fractional interface can be enabled by programming to bit 4 - txfr1544/txfr2048 bit from register 0xn120 to ?1?. transmit system side interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 14 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description txchn0_3/ txohsync0 txchn1_3/ txohsync1 txchn2_3/ txohsync2 txchn3_3/ txohsync3 a14 g18 n16 u12 o o 8 transmit time slot octet identifier output 3 (txchnn_3) / trans - mit overhead synchronization pulse (txohsyncn): the exact function of these pins depends on whether or not the trans - mit framer enables the transmit fractional/signaling interface, as described below: if transmit fractional/signaling interface is disabled - txchnn_3 these output signals (txchnn_4 through txchnn_0) reflect the five- bit binary value of the current time slot being processed by the trans - mit serial interface. terminal equipment can use the txchclk to sample the five output pins of each channel in order to identify the time slot being processed. this pin indicates bit 3 of the time slot channel being processed. if transmit fractional/signaling interface is enabled - txohsyncn these pins are used to output an overhead synchronization pulse which indicates the first bit of each multi-frame. n ote : transmit fractional interface can be enabled by programming to bit 4 - txfr1544/txfr2048 bit from register 0xn120 to ?1?. txchn0_4 txchn1_4 txchn2_4 txchn3_4 c14 h18 n15 t11 o 8 transmit time slot octet identifier output-bit 4 (txchnn_4): these output signals (txchnn_4 through txchnn_0) reflect the five- bit binary value of the current time slot being processed by the trans - mit serial interface. terminal equipment can use the txchclk to sample the five output pins of each channel in order to identify the time slot being processed. this pin indicates the most significant bit (msb) of the time slot channel being processed. transmit system side interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 15 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 transmit overhead interface s ignal n ame b all # t ype o utput d rive ( m a) d escription txoh0 txoh1 txoh2 txoh3 c12 f15 p15 r14 i - transmit overhead input (txohn): the exact function of these pins depends on the mode of oper - ation selected, as described below. ds1 mode these pins operate as the source of datalink bits which will be inserted into the datalink bits within an outbound ds1 frame if the framer is configured accordingly. datalink equipment can provide data to this input pin using the txohclkn clock at either 2khz or 4khz depending on the transmit datalink band - width selected. n ote : this input pin will be disabled if the framer is using the transmit hdlc controller, or the txser input as the source for the data link bits. e1 mode these pins operate as the source of datalink bits or signaling bits depending on the framer configuration, as described below. sourcing datalink bits from txohn: the e1 transmit framer will output a clock edge on txohclkn for each sa bit that has been configured to carry datalink infor - mation. terminal equipment can then use txohclkn to pro - vide datalink bits on txohn to be inserted into the sa bits within an outbound e1 frame. sourcing signaling bits from txohn: users must provide signaling data on txohn pins on time slot 16 only. signaling data (a,b,c,d) of channel 1 and channel 17 must be inserted on the txohn pin during time slot 16 of frame 1, signaling data (a,b,c,d) of channel 2 and channel 18 must be inserted on the txohn pin during time slot 16 of frame 2...etc. the cas multiframe alignments bits (0000 bits) and the extra bits/alarm bit (xyxx) must be inserted on the txohn pin during time slot 16 of frame 0. n ote : these 8 pins are internally pulled ?low? for each channel.
xrt86vl34 16 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description txohclk0 txohclk1 txohclk2 txohclk3 a11 e15 n18 v16 o 8 transmit oh serial clock output signal(txohclkn) this pin functions as an overhead output clock signal for the transmit overhead interface, and its function is explained below. ds1 mode if the txoh pins have been configured to be the source for datalink bits, the ds1 transmit framer will provide a clock edge for each data link bit. in ds1 esf mode, the txohclk can either be a 2khz or 4khz output signal depending on the selection of data link bandwidth (register 0xn10a). data link equipment can provide data to the txohn pin on the rising edge of txohclk. the framer latches the data on the falling edge of this clock signal. e1 mode if the txoh pins have been configured to be the source for data link bits, the e1 transmit framer will provide a clock edge for each national bit (sa bits) that has been configured to carry data link information. (register 0xn10a) transmit overhead interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 17 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 receive overhead interface s ignal n ame b all # t ype o utput d rive ( m a) d escription rxoh0 rxoh1 rxoh2 rxoh3 c11 b16 k15 p18 o 8 receive overhead output (rxohn): these pins function as the receive overhead output, or receive signaling output depending on the receive framer configuration, as described below. ds1 mode if the rxoh pins have been configured as the destination for the data link bits within an inbound ds1 frame, datalink bits will be output to the rxohn pins at either 2khz or 4khz depending on the receive datalink bandwidth selected. (register 0xn10c). if configured appropriately, signaling information in the receive signaling array registers (registers 0xn500-0xn51f) can also be output to the rxohn output pins. e1 mode these output pins will always output the contents of the national bits (sa4 through sa8) if these sa bits have been configured to carry data link information (register 0xn10c). the receive overhead output interface will provide a clock edge on rxohclkn for each sa bit carrying data link infor - mation. if configured appropriately, signaling information in the receive signaling array registers (registers 0xn500-0xn51f) can also be output to the rxohn output pins. rxohclk0 rxohclk1 rxohclk2 rxohclk3 a9 d17 k17 r16 o 8 receive overhead clock output (rxohclkn): this pin functions as an overhead output clock signal for the receive overhead interface, and its function is explained below. ds1 mode if the rxoh pins have been configured to be the destination for datalink bits, the ds1 transmit framer will output a clock edge for each data link bit. in ds1 esf mode, the rxo - hclk can either be a 2khz or 4khz output signal depending on the selection of data link bandwidth (register 0xn10c). data link equipment can clock out datalink bits on the rxohn pin using this clock signal. e1 mode the e1 receive framer provides a clock edge for each national bit (sa bits) that is configured to carry data link infor - mation. data link equipment can clock out datalink bits on the rxohn pin using this clock signal.
xrt86vl34 18 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description receive system side interface s ignal n ame b all # t ype o utput d rive ( m a) d escription rxsync0/ rxneg0 rxsync1/ rxneg1 rxsync2/ rxneg2 rxsync3/ rxneg3 d8 a18 f18 p16 i/o 12 receive single frame sync pulse (rxsyncn): the exact function of these pins depends on the mode of oper - ation selected, as described below. ds1/e1 base rate mode (1.544mhz/2.048mhz) - rxsyncn: these rxsyncn pins are used to indicate the single frame boundary within an inbound t1/e1 frame. in both ds1 or e1 mode, the single frame boundary repeats every 125 microsec - onds (8khz). in ds1/e1 base rate, rxsyncn can be configured as either input or output depending on the slip buffer configuration as described below. when rxsyncn is configured as an input : users must provide a signal which must pulse "high" for one period of rxserclk and repeats every 125 s. the receive serial interface will output the first bit of an inbound ds1/e1 frame during the provided rxsync pulse. n ote : it is imperative that the rxsync input signal be synchronized with the rxserclk input signal. when rxsyncn is configured as an output: the receive t1/e1 framer will output a signal which pulses "high" for one period of rxserclk during the first bit of an inbound ds1/e1 frame. ds1/e1 high-speed backplane modes* - rxsyncn as input only: in this mode, rxsyncn must be an input regardless of the slip buffer configuration. in 2.048mvip/4.096/8.192mhz high-speed modes, rxsyncn pins must be pulsed ?high? for one period of rxserclk during the first bit of the inbound t1/e1 frame. in hmvip mode, rxsync0 must be pulsed ?high? for 4 clock cycles of the rxserclk signal in the position of the first two and the last two bits of a multiplexed frame. in h.100 mode, rxsync0 must be pulsed ?high? for 2 clock cycles of the rxserclk signal in the position of the first and the last bit of a multiplexed frame. ds1 or e1 framer bypass mode - rxnegn in this mode, rxsyncn is used as the receive negative digital output pin (rxneg) from the liu. n ote : *high-speed backplane modes include (for t1/e1) 2.048mvip, 4.096mhz, 8.192mhz, 16.384mhz hmvip, h.100, bit-multiplexed modes, and (for t1 only) 12.352mhz bit-multiplexed mode. n ote : in ds1 high-speed modes, the ds-0 data is mapped into an e1 frame by ignoring every fourth time slot (don?t care). n ote : these 8 pins are internally pulled ?low? for each channel.
xrt86vl34 19 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 rxcrcsync0 rxcrcsync1 rxcrcsync2 rxcrcsync3 c8 c13 j17 r17 o 12 receive multiframe sync pulse (rxcrcsyncn): the rxcrcsyncn pins are used to indicate the receive multi- frame boundary. these pins pulse "high" for one period of rxserclk when the first bit of an inbound ds1/e1 multi-frame is being output on the rxcrcsyncn pin. ? in ds1 esf mode, rxcrcsyncn repeats every 3ms ? in ds1 sf mode, rxcrcsyncn repeats every 1.5ms ? in e1 mode, rxcrcsyncn repeats every 2ms. rxcasync0 rxcasync1 rxcasync2 rxcasync3 d10 b17 h15 t18 o 12 receive cas multiframe sync pulse (rxcasyncn): - e1 mode only the rxcasyncn pins are used to indicate the e1 cas multif- frame boundary. these pins pulse "high" for one period of rxserclk when the first bit of an e1 cas multi-frame is being output on the rxcasyncn pin. receive system side interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 20 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description rxserclk0/ rxlineclk0 rxserclk1/ rxlineclk1 rxserclk2/ rxlineclk2 rxserclk3/ rxlineclk3 a7 d13 d15 t17 i/o 12 receive serial clock signal (rxserclkn) / receive line clock (rxlineclkn): the exact function of these pins depends on the mode of oper - ation selected, as described below. in base-rate mode (1.544mhz/2.048mhz) - rxserclkn: these pins are used as the receive serial clock on the system side interface which can be configured as either input or output. the receive serial interface outputs data on rxsern on the ris - ing edge of rxserclkn. when rxserclkn is configured as input: these pins will be inputs if the slip buffer on the receive path is enabled. system side equipment must provide a 1.544mhz clock rate to this input pin for t1 mode of operation, and 2.048mhz clock rate in e1 mode. when rxserclkn is configured as output: these pins will be outputs if slip buffer is bypassed. the receive framer will output a 1.544mhz clock rate in t1 mode of opera - tion, and a 2.048mhz clock rate in e1 mode. ds1/e1 high-speed backplane modes* - (rxserclk as input only) in this mode, this pin must be used as the high-speed input clock for the backplane interface to output high-speed or multi - plexed data on the rxsern pin. the frequency of rxserclk is presented in the table below. n otes : 1. *high-speed backplane modes include (for t1/e1) 2.048mvip, 4.096mhz, 8.192mhz, 16.384mhz hmvip, h.100, bit-multiplexed modes, and (for t1 only) 12.352mhz bit-multiplexed mode. 2. for ds1 high-speed modes, the ds-0 data is mapped into an e1 frame by ignoring every fourth time slot (don?t care). receive system side interface s ignal n ame b all #t ype o utput d rive ( m a) d escription o peration m ode f requency of r x serclk(mh z ) 2.048mvip non-multiplexed 2.048 4.096mhz non-multiplexed 4.096 8.192mhz non-multiplexed 8.192 12.352mhz bit-multiplexed (ds1 only) 12.352 16.384mhz bit-multiplexed 16.384 16.384 hmvip byte-multiplexed 16.384 16.384 h.100 byte-multiplexed 16.384
xrt86vl34 21 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 rxserclk0/ rxlineclk0 rxserclk1/ rxlineclk1 rxserclk2/ rxlineclk2 rxserclk3/ rxlineclk3 a7 d13 d15 t17 i/o 12 (continued) ds1 or e1 framer bypass mode - rxlineclkn in this mode, rxserclkn is used as the receive line clock output pin (rxlineclk) from the liu. n ote : these 8 pins are internally pulled ?high? for each channel. rxser0/ rxpos0 rxser1/ rxpos1 rxser2/ rxpos2 rxser3/ rxpos3 d6 a15 j18 u17 o 12 receive serial data output (rxsern): the exact function of these pins depends on the mode of oper - ation selected, as described below. ds1/e1 mode - rxsern these pins function as the receive serial data output on the system side interface, which updates on the rising edge of the rxserclkn pin. all the framing alignment bits, facility data link bits, crc bits, and signaling information will also be extracted to this output pin. ds1 or e1 high-speed multiplexed mode* - rxsern in this mode, these pins are used as the high-speed multi - plexed data output pin on the system side. high-speed multi - plexed data of channels 0-3 will output on rxser0 in a byte or bit-interleaved way. the framer outputs the multiplexed data on rxser0 using the high-speed input clock (rxserclkn). ds1 or e1 framer bypass mode in this mode, rxsern is used as the positive digital output pin (rxposn) from the liu. n ote : *high-speed multiplexed modes include (for t1/e1) 16.384mhz hmvip, h.100, bit-multiplexed modes, and (for t1 only) 12.352mhz bit-multiplexed mode. n ote : in ds1 high-speed modes, the ds-0 data is mapped into an e1 frame by ignoring every fourth time slot (don?t care). receive system side interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 22 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description rxchn0_0/ rxsig0 rxchn1_0/ rxsig1 rxchn2_0/ rxsig2 rxchn3_0/ rxsig3 d7 d14 h16 r18 o 8 receive time slot octet identifier output (rxchnn_0) / receive serial signaling output (rxsign): the exact function of these pins depends on whether or not the receive framer enables the receive fractional/signaling inter - face, as described below: if receive fractional/signaling interface is disabled - rxchnn_0: these output pins (rxchnn_4 through rxchnn_0) reflect the five-bit binary value of the current time slot being output by the receive serial interface. system equipment can use the rxch - clkn to sample the five output pins of each channel to identify the time slot being output on these pins. rxchnn_0 indicates the least significant bit (lsb) of the time slot channel being output. if receive fractional/signaling interface is enabled - rxsign: these pins can be used to output robbed-bit signaling data within an inbound ds1 frame or to output channel associated signaling (cas) data within an inbound e1 frame, as described below. t1 mode: signaling data (a,b,c,d) of each channel will be out - put on bit 4,5,6,7 of each time slot on the rxsig pin if 16-code signaling is used. if 4-code signaling is selected, signaling data (a,b) of each channel w ill be output on bit 4, 5 of each time slot on the rxsig pin. if 2-code signaling is selected, signaling data (a) of each channel will be output on bit 4 of each time slot on the rxsig pin. e1 mode: signaling data in e1 mode will be output on the rxsign pins on a time-slot-basis as in t1 mode, or it can be output on time slot 16 only via the rxsign output pins. in the latter case, signaling data (a,b,c,d) of channel 1 and channel 17 will be output on the rxsign pin during time slot 16 of frame 1, signaling data (a,b,c,d) of channel 2 and channel 18 will be output on the rxsign pin during time slot 16 of frame 2...etc. the cas multiframe alignments bits (0000 bits) and the extra bits/alarm bit (xyxx) w ill be output on the rxsign pin during time slot 16 of frame 0. n ote : receive fractional/signaling interface can be enabled by programming to bit 4 - rxfr1544/rxfr2048 bit from register 0xn122 to ?1?. receive system side interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 23 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 rxchn0_1/ rxfrtd0 rxchn1_1/ rxfrtd1 rxchn2_1/ rxfrtd2 rxchn13_1/ rxfrtd3 c9 b15 g15 v18 o 8 receive time slot octet identifier output bit 1 (rxchnn_1) / receive serial fractional output (rxfrtdn): the exact function of these pins depends on whether or not the receive framer enables the receive fractional/signaling inter - face, as described below: if receive fractional/signaling interface is disabled - rxchnn_1: these output pins (rxchnn_4 through rxchnn_0) reflect the five-bit binary value of the current time slot being output by the receive serial interface. system equipment can use the rxch - clkn to sample the five output pins of each channel to identify the time slot being output on these pins. rxchnn_1 indicates bit 1 of the time slot channel being output. if receive fractional/signaling interface is enabled - rxfrtdn: these pins are used as the fractional data output pins to output fractional ds1/e1 payload data within an inbound ds1/e1 frame. in this mode, system equipment can use either rxch - clk or rxserclk to clock out fractional ds1/e1 payload data depending on the framer configuration. n ote : receive fractional/signaling interface can be enabled by programming to bit 4 - rxfr1544/rxfr2048 bit from register 0xn122 to ?1?. rxchn0_2/ rxchn0 rxchn1_2/ rxchn1 rxchn2_2/ rxchn2 rxchn3_2/ rxchn3 b9 a17 k18 t15 o 8 receive time slot octet identifier output-bit 2 (rxchnn_2) / receive time slot identifier serial output (rxchnn): the exact function of these pins depends on whether or not the receive framer enables the receive fractional/signaling inter - face, as described below: if receive fractional/signaling interface is disabled - rxchnn_2: these output pins (rxchnn_4 through rxchnn_0) reflect the five-bit binary value of the current time slot being output by the receive serial interface. system equipment can use the rxch - clkn to sample the five output pins of each channel to identify the time slot being output on these pins. rxchnn_2 indicates bit 2 of the time slot channel being output. if receive fractional/signaling interface is enabled - rxchnn these pins serially output the five-bit binary value of the time slot being output by the receive serial interface. n ote : receive fractional/signaling interface can be enabled by programming to bit 4 - rxfr1544/rxfr2048 bit from register 0xn122 to ?1?. receive system side interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 24 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description rxchn0_3/ rx8khz0 rxchn1_3/ rx8khz1 rxchn2_3/ rx8khz2 rxchn3_3/ rx8khz3 c10 d18 l16 t14 o 8 receive time slot octet identifier output-bit 3 (rxchnn_3) / receive 8khz clock output (rx8khzn): the exact function of these pins depends on whether or not the receive framer enables the receive fractional/signaling inter - face, as described below: if receive fractional/signaling interface is disabled - rxchnn_3: these output pins (rxchnn_4 through rxchnn_0) reflect the five-bit binary value of the current time slot being output by the receive serial interface. system equipment can use the rxch - clkn to sample the five output pins of each channel to identify the time slot being output on these pins. rxchnn_3 indicates bit 3 of the time slot channel being output. if receive fractional/signaling interface is enabled - rx8khzn: these pins output a reference 8khz clock signal derived from the mclkin input. n ote : receive fractional/signaling interface can be enabled by programming to bit 4 - rxfr1544/rxfr2048 bit from register 0xn122 to ?1?. rxchn0_4/ rxsclk0 rxchn1_4/ rxsclk1 rxchn2_4/ rxsclk2 rxchn3_4/ rxsclk3 b10 e17 k16 u14 o 8 receive time slot octet identifier output-bit 4 (rxchnn_4) / receive recovered line clock output (rxsclkn): the exact function of these pins depends on whether or not the receive framer enables the receive fractional/signaling inter - face, as described below: if receive fractional/signaling interface is disabled - rxchnn_4: these output pins (rxchnn_4 through rxchnn_0) reflect the five-bit binary value of the current time slot being output by the receive serial interface. system equipment can use the rxch - clkn to sample the five output pins of each channel to identify the time slot being output on these pins. rxchnn_4 indicates the most significant bit (msb) of the time slot channel being output. if receive fractional/signaling interface is enabled - receive recovered line clock output (rxsclkn): these pins output the recovered t1/e1 line clock (1.544mhz in t1 mode and 2.048mhz in e1 mode) for each channel. n ote : receive fractional/signaling interface can be enabled by programming to bit 4 - rxfr1544/rxfr2048 bit from register 0xn122 to ?1?. receive system side interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 25 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 rxchclk0 rxchclk1 rxchclk2 rxchclk3 a8 a16 h17 p17 o 8 receive channel clock output (rxchclkn): the exact function of this pin depends on whether or not the receive framer enables the receive fractional/signaling interface to output fractional data, as described below. if receive fractional/signaling interface is disabled: this pin indicates the boundary of each time slot of an inbound ds1/e1 frame. in t1 mode, each of these output pins is a 192khz clock which pulses "high" during the lsb of each 24 time slots. in e1 mode, each of these output pins is a 256khz clock which pulses "high" during the lsb of each 32 time slots. system equipment can use this clock signal to sample the rxchn0 through rxchn4 time slot identifier pins to determine which time slot is being output. if receive fractional/signaling interface is enabled: rxchclkn is the fractional interface clock which either outputs a clock signal for the time slot that has been configured to out - put fractional data, or outputs an enable signal for the fractional time slot so that fractional data can be clocked out of the device using the rxserclk pin. n ote : receive fractional interface can be enabled by programming to bit 4 - rxfr1544/rxfr2048 bit from register 0xn122 to ?1?. receive system side interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 26 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description receive line interface s ignal n ame b all # t ype o utput d rive ( m a) d escription rtip0 rtip1 rtip2 rtip3 e1 g1 j1 l1 i - receive positive analog input (rtipn): rtip is the positive differential input from the line interface. this input pin, along with the rring input pin, functions as the ?receive ds1/e1 line signal? input for the xrt86vl34 device. the user is expected to connect this signal and the rring input signal to a 1:1 transformer for proper operation. the center tap of the receive transformer should have a bypass capacitor of 0.1 f to ground (chip side) to improve long haul application receive capa - bilities. rring0 rring1 rring2 rring3 f1 h1 k1 m1 i - receive negative analog input (rringn): rring is the negative differential input from the line interface. this input pin, along with the rtip input pin, functions as the ?receive ds1/e1 line signal? input for the xrt86vl34 device. the user is expected to connect this signal and the rtip input sig - nal to a 1:1 transformer for proper operation. the center tap of the receive transformer should have a bypass capacitor of 0.1 f to ground (chip side) to improve long haul application receive capa - bilities. rxlos_0 rxlos_1 rxlos_2 rxlos_3 b7 c18 g16 u18 o 4 receive loss of signal output indicator (rlosn): the xrt86vl34 device will assert this output pin (i.e., toggle it ?high?) anytime (and for the duration that) the receive ds1/e1 framer or liu block declares the los defect condition. conversely, the xrt86vl34 device will tri-state this output pin any - time (and for the duration that) the receive ds1/e1 framer or liu block is not declaring the los defect condition. n otes : 1. this output pin will toggle "high" (to denote that los is being declared) whenever either the receive ds1/e1 framer or the receive ds1/e1 liu block (associated wtih channel n) declares the los defect condition. in other words, the state of this output pin is a logical or of the framer los and the liu los conditions. 2. since the xrt86vl34 device tri-states this output pin (anytime the channel is not declaring the los defect condition). therefore, the user must connect a "pull- down" resistor (ranging from 1k to 10k) to each rxlos output pin, in order to pull this output pin to the logic "low" condition, whenever the channel is not declaring the los defect condition.
xrt86vl34 27 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 rxtsel n3 i - receive termination control (rxtsel): upon power up, the receivers are in "high" impedance. switching to internal termination can be selected through the microprocessor interface by programming the appropriate channel register. how - ever, to switch control to the hardware pin, rxtcntl must be pro - grammed to "1" in the appropriate global register (0x0fe2). once control has been granted to the hardware pin, it must be pulled "high" to switch to internal termination. n ote : internally pulled "low" with a 50k resistor. receive line interface s ignal n ame b all #t ype o utput d rive ( m a) d escription rxtsel (pin) rx termination external internal 0 1 note: rxtcntl (bit) must be set to "1"
xrt86vl34 28 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description transmit line interface s ignal n ame b all # t ype d escription ttip0 ttip1 ttip2 ttip3 e4 g4 j4 l4 o transmit positive analog output (ttipn): ttip is the positive differential output to the line interface. this output pin, along with the corresponding tring output pin, function as the transmit ds1/ e1 output signal drivers for the xrt86vl34 device. the user is expected to connect this signal and the corresponding tring out - put signal to a 1:2 step up transformer for proper operation. this output pin will be tri-stated whenever the user sets the ?txon? input pin or register bit (0xnf02, bit 3) to ?0?. n ote : this pin should have a series line capacitor of 0.68 f for dc blocking purposes. tring0 tring1 tring2 tring3 f4 h4 k4 m4 o transmit negative analog output (tringn): tring is the negative differential output to the line interface. this output pin, along with the corresponding ttip output pin, function as the transmit ds1/ e1 output signal drivers for the xrt86vl34 device. the user is expected to connect this signal and the corresponding tring out - put signal to a 1:2 step up transformer for proper operation. n ote : this output pin will be tri-stated whenever the user sets the ?txon? input pin or register bit (0xnf02, bit 3) to ?0?. txon n1 i transmitter on this input pin permits the user to either enable or disable the transmit output driver within the transmit ds1/e1 liu block. if the txon pin is pulled ?low?, all 8 channels are tri-stated. when this pin is pulled ?high?, turning on or off the transmitters will be determined by the appropriate channel registers (address 0x0fn2, bit 3) low = disables the transmit output driver within the transmit ds1/e1 liu block. in this setting, the ttip and tring output pins of all 8 channels will be tri-stated. high = enables the transmit output driver within the transmit ds1/e1 liu block. in this setting, the corresponding ttip and tring output pins will be enabled or disabled by programming the appropriate channel register. (address 0x0fn2, bit 3) n ote : whenever the transmitters are turned off, the ttip and tring output pins will be tri-stated. timing interface s ignal n ame b all # t ype o utput d rive ( m a) d escription mclkin a4 i - master clock input: this pin is used to provide the timing reference for the internal master clock of the device. the frequency of this clock is pro - grammable from 8khz to 16.384mhz in register 0x0fe9. e1mclknout a3 o 12 liu e1 output clock reference this output pin is defaulted to 2.048mhz, but can be programmed to 4.096mhz, 8.192mhz, or 16.384mhz in register 0x0fe4.
xrt86vl34 29 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 t1mclknout b4 o 12 liu t1 output clock reference this output pin is defaulted to 1.544mhz, but can be programmed to output 3.088mhz, 6.176mhz, or 12.352mhz in register 0x0fe4. e1oscclk p2 o 8 framer e1 output clock reference this output pin is defaulted to 2.048mhz, but can be programmed to 65.536mhz in register 0x011e. t1oscclk p4 o 8 framer t1 output clock reference this output pin is defaulted to 1.544mhz, but can be programmed to output 49.408mhz in register 0x011e. 8ksync r2 o 8 8khz clock output reference this pin is an output reference of 8khz based on the mclkin input. therefore, the duty cycle of this output is determined by the time period of the input clock reference. 8kextosc n4 i - external oscillator select for normal operation, this pin should not be used, or pulled ?low?. this pin is internally pulled ?low? with a 50k resistor. analog e5 o factory test mode pin n ote : for internal use only lop n2 i - loss of power for e1 only this is a loss of power pin in the e1 application only. upon detecting lop in e1 mode, the device will automatically transmit the sa5 and sa6 bit to a different pattern, so that the receive ter - minal can detect a power failure in the network. please see register 0xn131 for the transmit sa control. timing interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 30 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description jtag interface the xrt86vl34 device?s jtag features comply with the ieee 1149.1 standard. please refer to the industry specification for additional information on boundary scan operations. s ignal n ame b all # t ype o utput d rive ( m a) d escription tck c7 i - test clock: boundary scan test clock input: the tclk signal is the clock for the tap controller, and it generates the boundary scan data register clocking. the data on tms and tdi is loaded on the positive edge of tck. data is observed at tdo on the falling edge of tck. tms c6 i - test mode select: boundary scan test mode select input. the tms signal controls the transitions of the tap controller in conjunction with the rising edge of the test clock (tck). n ote : for normal operation this pin must be pulled "high". tdi b6 i - test data in: boundary scan test data input the tdi signal is the serial test data input. n ote : this pin is internally pulled ?high?. tdo d5 o 8 test data out: boundary scan test data output the tdo signal is the serial test data output. trst a6 i - test reset input: the trst signal (active low) asynchronously resets the tap controller to the test-logic-reset state. n ote : this pin is internally pulled ?high? testmode b11 i - factory test mode pin n ote : this pin is internally pulled ?low?, and should be pulled ?low? for normal operation. atestmode b5 i - factory test mode pin n ote : this pin is internally pulled ?low?, and should be pulled ?low? for normal operation. atp_ring b2 i - atp_ring test pin this analog test pin is used for testing the continuity between the ttip/tring, rtip/rring of each channel and the on- board transformer. atp_tip c3 i - atp_tip test pin this analog test pin is used for testing the continuity between the ttip/tring, rtip/rring of each channel and the on- board transformer.
xrt86vl34 31 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 microprocessor interface s ignal n ame b all # t ype o utput d rive ( m a) d escription data0 data1 data2 data3 data4 data5 data6 data7 t4 u3 v8 v9 t10 v10 u11 r11 i/o 8 bidirectional microprocessor data bus these pins are used to drive and receive data over the bi-direc - tional data bus, whenever the microprocessor performs read or write operations with the microprocessor interface of the xrt86vl34 device. when dma interface is enabled, these 8-bit bidirectional data bus is also used by the t1/e1 framer or the external dma controller for storing and retrieving information. req0 r1 o 8 dma cycle request output?dma controller 0 (write) : these output pins are used to indicate that dma transfers (write) are requested by the t1/e1 framer. on the transmit side (i.e., to transmit data from external dma controller to hdlc buffers within the xrt86vl34), dma trans - fers are only requested when the transmit buffer status bits indicate that there is space for a complete message or cell. the dma write cycle starts by t1/e1 framer asserting the dma request ( req0) ?low?, then the external dma controller should drive the dma acknowledge ( ack0) ?low? to indicate that it is ready to start the transfer. the external dma controller should place new data on the microprocessor data bus each time the write signal is strobed low if the wr is configured as a write strobe. if wr is configured as a direction signal, then the external dma controller would place new data on the microprocessor data bus each time the read signal (rd) is strobed low. the framer asserts this output pin (toggles it "low") when at least one of the transmit hdlc buffers are empty and can receive one more hdlc message. the framer negates this output pin (toggles it ?high?) when the hdlc buffer can no longer receive another hdlc message.
xrt86vl34 32 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description req1 r3 o 8 dma cycle request output?dma controller 1 (read): these output pins are used to indicate that dma transfers (read) are requested by the t1/e1 framer. on the receive side (i.e., to transmit data from hdlc buffers within the xrt86vl34 to external dma controller), dma trans - fers are only requested when the receive buffer contains a complete message or cell. the dma read cycle starts by t1/e1 framer asserting the dma request ( req1) ?low?, then the external dma controller should drive the dma acknowledge ( ack1) ?low? to indicate that it is ready to receive the data. the t1/e1 framer should place new data on the microprocessor data bus each time the read signal is strobed low if the rd is configured as a read strobe. if rd is configured as a direction signal, then the t1/e1 framer would place new data on the microprocessor data bus each time the write signal (wr) is strobed low. the framer asserts this output pin (toggles it "low") when one of the receive hdlc buffer contains a complete hdlc mes - sage that needs to be read by the c/p. the framer negates this output pin (toggles it ?high?) when the receive hdlc buffers are depleted. int r8 o 8 interrupt request output: this active-low output signal will be asserted when the xrt86vl34 device is requesting interrupt service from the microprocessor. this output pin should typically be connected to the ?interrupt request? input of the microprocessor. the framer will assert this active "low" output (toggles it "low"), to the local p, anytime it requires interrupt service. pclk v1 i - microprocessor clock input: this clock input signal is only used if the microprocessor inter - face has been configured to operate in the synchronous modes (e.g., power pc 403 mode). if the microprocessor inter - face is configured to operate in this mode, then it will use this clock signal to do the following. 1. to sample the cs*, wr*/r/w*, a[14:0], d[7:0], rd*/ds* and dben input pins, and 2. to update the state of the d[7:0] and the rdy/dtack output signals. n otes : 1. the microprocessor interface can work with pclk frequencies ranging up to 33mhz. 2. this pin is inactive if the user has configured the microprocessor interface to operate in either the intel- asynchronous or the motorola-asynchronous modes. in this case, the user should tie this pin to gnd. when dma interface is enabled, the pclk input pin is also used by the t1/e1 framer to latch in or latch out receive or out - put data respectively. iaddr u1 i - this pin must be tied ?low? for normal operation. this pin is internally pulled ?high? with a 50k resistor. microprocessor interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 33 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 faddr t1 i - this pin must be tied ?high? for normal operation. this pin is internally pulled ?low? with a 50k resistor. ptype0 ptype1 ptype2 v2 v4 t8 i - microprocessor type input: these input pins permit the user to specify which type of micro - processor/microcontroller to be interfaced to the xrt86vl34 device. the following table presents the three different micro - processor types that the xrt86vl34 supports. n ote : these pins are internally pulled ?low? with a 50k resistor. microprocessor interface s ignal n ame b all #t ype o utput d rive ( m a) d escription 0 1 1 ptype0 0 0 0 0 0 1 ptype1 ptype2 intel asynchronous motorola asynchronous ibm power pc 403 microprocessor type
xrt86vl34 34 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description rdy t3 o 12 ready/data transfer acknowledge output: the exact behavior of this pin depends upon the type of micro - processor/microcontroller the xrt86vl34 has been configured to operate in, as defined by the ptype[2:0] pins. intel asynchronous mode - rdy* - ready output tis output pin will function as the ?active-low? ready output. during a read or write cycle, the microprocessor interface block will toggle this output pin to the logic low level, only when the microprocessor interface is ready to complete or ter - minate the current read or write cycle. once the micropro - cessor has determined that this input pin has toggled to the logic ?low? level, then it is now safe for it to move on and exe - cute the next read or write cycle. if (during a read or write cycle) the microprocessor inter - face block is holding this output pin at a logic ?high? level, then the microprocessor is expected to extend this read or write cycle, until it detects this output pin being toggled to the logic low level. motorola asynchronous mode - dtack* - data transfer acknowledge output tis output pin will function as the ?active-low? dtack output. during a read or write cycle, the microprocessor interface block will toggle this output pin to the logic low level, only when the microprocessor interface is ready to complete or ter - minate the current read or write cycle. once the micropro - cessor has determined that this input pin has toggled to the logic ?low? level, then it is now safe for it to move on and exe - cute the next read or write cycle. if (during a read or write cycle) the microprocessor inter - face block is holding this output pin at a logic ?high? level, then the microprocessor is expected to extend this read or write cycle, until it detects this output pin being toggled to the logic low level. power pc 403 mode - rdy ready output: this output pin will function as the ?active-high? ready output. during a read or write cycle, the microprocessor interface block will toggle this output pin to the logic high level, only when the microprocessor interface is ready to complete or ter - minate the current read or write cycle. once the micropro - cessor has sampled this signal being at the logic ?high? level upon the rising edge of pclk, then it is now safe for it to move on and execute the next read or write cycle. if (during a read or write cycle) the microprocessor inter - face block is holding this output pin at a logic ?low? level, then the microprocessor is expected to extend this read or write cycle, until it samples this output pin being at the logic low level. n ote : the microprocessor interface will update the state of this output pin upon the rising edge of pclk. microprocessor interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 35 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 addr0 addr1 addr2 addr3 addr4 addr5 addr6 addr7 addr8 addr9 addr10 addr11 addr12 addr13 u5 v5 r5 t6 u6 v6 r6 t7 v7 u9 r7 r9 r10 v11 i - microprocessor interface address bus input these pins permit the microprocessor to identify on-chip regis - ters and buffer/memory locations within the xrt86vl34 device whenever it performs read and write operations with the xrt86vl34 device. n ote : these pins are internally pulled ?low? with a 50k resistor, except addr [8:13]. dben u4 i - data bus enable input pin. this active-low input pin permits the user to either enable or tri- state the bi-directional data bus pins (d[7:0]), as described below. ? setting this input pin ?low? enables the bi-directional data bus. ? setting this input pin ?high? tri-states the bi-directional data bus. ale u8 i - address latch enable input address strobe the exact behavior of this pin depends upon the type of micro - processor/microcontroller the xrt86vl34 has been configured to operate in, as defined by the ptype[2:0] pins. intel-asynchronous mode - ale this active-high input pin is used to latch the address (present at the microprocessor interface address bus pins (a[14:0]) into the xrt86vl34 microprocessor interface block and to indicate the start of a read or write cycle. pulling this input pin ?high? enables the input bus drivers for the address bus input pins (a[14:0]). the contents of the address bus will be latched into the xrt86vl34 microprocessor inter - face circuitry, upon the falling edge of this input signal. motorola-asynchronous (68k) mode - as* this active-low input pin is used to latch the data residing on the address bus, a[14:0] into the microprocessor interface cir - cuitry of the xrt86vl34 device. pulling this input pin ?low? enables the input bus drivers for the address bus input pins. the contents of the address bus will be latched into the microprocessor interface circuitry, upon the rising edge of this signal. power pc 403 mode - no function -tie to gnd: this input pin has no role nor function and should be tied to gnd. microprocessor interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 36 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description cs v13 i - microprocessor interface?chip select input: the user must assert this active low signal in order to select the microprocessor interface for read and write operations between the microprocessor and the xrt86vl34 on-chip reg - isters and buffer/memory locations. rd v3 i - microprocessor interface?read strobe input: the exact behavior of this pin depends upon the type of micro - processor/microcontroller the framer has been configured to operate in, as defined by the ptype[2:0] pins. intel-asynchronous mode - rd* - read strobe input: this input pin will function as the rd* (active low read strobe) input signal from the microprocessor. once this active- low signal is asserted, then the xrt86vl34 device will place the contents of the addressed register (or buffer location) on the microprocessor interface bi-directional data bus (d[7:0]). when this signal is negated, then the data bus will be tri- stated. motorola-asynchronous (68k) mode - ds* - data strobe: this input pin will function as the ds* (data strobe) input sig - nal. power pc 403 mode - we* - write enable input: this input pin will function as the we* (write enable) input pin. anytime the microprocessor interface samples this active-low input signal (along with cs* and wr/r/w*) also being asserted (at a logic low level) upon the rising edge of pclk, then the microprocessor interface will (upon the very same rising edge of pclk) latch the contents on the bi-directional data bus (d[7:0]) into the ?tar - get? on-chip register or buffer location within the xrt86vl34 device. microprocessor interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 37 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 wr v12 i - microprocessor interface?write strobe input the exact behavior of this pin depends upon the type of micro - processor/microcontroller the xrt86vl34 has been configured to operate in, as defined by the ptype[2:0] pins. intel-asynchronous mode - wr* - write strobe input: this input pin functions as the wr* (active low write strobe) input signal from the microprocessor. once this active-low sig - nal is asserted, then the input buffers (associated with the bi- directional data bus pin, d[7:0]) will be enabled. the microprocessor interface will latch the contents on the bi- directional data bus (into the ?target? register or address loca - tion, within the xrt86vl34) upon the rising edge of this input pin. motorola-asynchronous mode - r/w* - read/write opera - tion identification input pin: this pin is functionally equivalent to the ?r/w*? input pin. in the motorola mode, a ?read? operation occurs if this pin is held at a logic ?1?, coincident to a falling edge of the rd/ds* (data strobe) input pin. similarly a write operation occurs if this pin is at a logic ?0?, coincident to a falling edge of the rd/ds* (data strobe) input pin. power pc 403 mode - r/w* - read/write operation identifi - cation input: this input pin will function as the ?read/write operation identi - fication input? pin. anytime the microprocessor interface samples this input signal at a logic low (while also sampling the cs* input pin ?low?) upon the rising edge of pclk, then the microprocessor interface will (upon the very same rising edge of pclk) latch the contents of the address bus (a[14:0]) into the microprocessor interface cir - cuitry, in preparation for this forthcoming read operation. at some point (later in this read operation) the microprocessor will also assert the dben*/oe* input pin, and the microproces - sor interface will then place the contents of the ?target? register (or address location within the xrt86vl34 device) upon the bi-directional data bus pins (d[7:0]), where it can be read by the microprocessor. anytime the microprocessor interface samples this input signal at a logic high (while also sampling the cs* input pin a logic ?low?) upon the rising edge of pclk, then the microprocessor interface will (upon the very same rising edge of pclk) latch the contents of the address bus (a[14:0]) into the microproces - sor interface circuitry, in preparation for the forthcoming write operation. at some point (later in this write operation) the microprocessor will also assert the rd*/ds*/we* input pin, and the microprocessor interface will then latch the contents of the bi-directional data bus (d[7:0]) into the contents of the ?target? register or buffer location (within the xrt86vl34). microprocessor interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 38 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description ack0 ack1 t2 u2 i - dma cycle acknowledge input?dma controller 0 (write): the external dma controller will assert this input pin ?low? when the following two conditions are met: 1. after the dma controller, within the framer has asserted (toggled ?low?), the req_0 output signal. 2. when the external dma controller is ready to transfer data from external memory to the selected transmit hdlc buffer. at this point, the dma transfer between the external memory and the selected transmit hdlc buffer may begin. after completion of the dma cycle, the external dma controller will negate this input pin after the dma controller within the framer has negated the req_0 output pin. the external dma controller must do this in order to acknowledge the end of the dma cycle. dma cycle acknowledge input?dma controller 1 (read): the external dma controller asserts this input pin ?low? when the following two conditions are met: 1. after the dma controller, within the framer has asserted (toggled "low"), the req_1 output signal. 2. when the external dma controller is ready to transfer data from the selected receive hdlc buffer to external memory. at this point, the dma transfer between the selected receive hdlc buffer and the external memory may begin. after completion of the dma cycle, the external dma controller will negate this input pin after the dma controller within the framer has negated the req_1 output pin. the external dma controller will do this in order to acknowledge the end of the dma cycle. n ote : this pin is internally pulled ?high? with a 50k resistor. blast u10 i - last cycle of burst indicator input: if the microprocessor interface is operating in the intel-i960 mode, then this input pin is used to indicate (to the micropro - cessor interface block) that the current data transfer is the last data transfer within the current burst operation. the microprocessor should assert this input pin (by toggling it ?low?) in order to denote that the current read or write operation (within a burst operation) is the last operation of this burst operation. n otes : 1. if the user has configured the microprocessor interface to operate in the intel-asynchronous, the motorola-asynchronous or the power pc 403 mode, then he/she should tie this input pin to gnd. 2. this pin is internally pulled ?high? with a 50k resistor. microprocessor interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 39 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 reset p1 i - hardware reset input reset is an active low input. if this pin is pulled ?low? for more than 10 s, the device will be reset. when this occurs, all output will be ?tri-stated?, and all internal registers will be reset to their default values. power supply pins (3.3v) s ignal n ame b all # t ype d escription vdd d16 p3 r15 t9 pwr framer block power supply (i/o) rvdd e3 g3 j3 l3 pwr receiver analog power supply for liu section tvdd f3 h3 k3 m3 pwr transmitter analog power supply for liu section power supply pins (1.8v) s ignal n ame b all # t ype d escription dvdd18 b8 c4 j16 r13 u7 pwr digital power supply for liu section avdd18 a2 pwr analog power supply for liu section vddpll18 b1 c2 d2 d3 pwr analog power supply for pll microprocessor interface s ignal n ame b all #t ype o utput d rive ( m a) d escription
xrt86vl34 40 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description ground pins s ignal n ame b all # t ype d escription vss a5 b14 c16 m15 m16 r4 t5 u16 gnd framer block ground dgnd c5 gnd digital ground for liu section agnd b3 gnd analog ground for liu section rgnd e2 g2 j2 l2 gnd receiver analog ground for liu section tgnd f2 h2 k2 m2 gnd transmitter analog ground for liu section gndpll18 a1 c1 d1 d4 gnd analog ground for pll
xrt86vl34 41 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 electrical characteristics absolute maximums power supply..................................................................... vdd io .. ................................................ - 0.5v to +3.465v vdd core............................................... - 0.5v to +1.890v power rating pbga package................................. 1.39w (at zero airflow) storage temperature ...............................-65c to 150c input logic signal voltage (any pin) .........-0.5v to + 5.5v operating temperature range.................-40c to 85c esd protection (hbm)...........................................>2000v supply voltage ...................... gnd-0.5v to +vdd + 0.5v input current (any pin) ...................................... + 100ma dc electrical characteristics test conditions: ta = 25c, vdd io = 3.3v + 5% , vdd core = 1.8v + 5%unless otherwise specified s ymbol p arameter m in . t yp . m ax . u nits c onditions i ll data bus tri-state bus leakage current -10 +10 a v il input low voltage 0.8 v v ih input high voltage 2.0 vdd v v ol output low voltage 0.0 0.4 v i ol = -1.6ma voh output high voltage 2.4 vdd v i oh = 40a i oc open drain output leakage current a i ih input high voltage current -10 10 a v ih = vdd i il input low voltage current -10 10 a v il = gnd t able 4: xrt86vl34 p ower c onsumption vdd io = 3.3v + 5% , vdd core = 1.8v + 5%, t a =25c, unless otherwise specified m ode s upply v oltage i mpedance termination r esistor t ransformer r atio t yp . m ax . u nit t est c onditions r eceiver t ransmitter e1 3.3v 75 internal 1:1 1:2 1.035 w prbs pattern e1 3.3v 120 internal 1:1 1:2 0.965 w prbs pattern t1 3.3v 100 internal 1:1 1:2 1.105 w prbs pattern
xrt86vl34 42 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description ac electrical characteristics transmit framer (base rate/non-mux) test conditions: ta = 25c, vdd = 3.3v + 5% unless otherwise specified s ymbol p arameter m in . t yp . m ax . u nits c onditions t 1 txserclk to txmsync delay 234 ns t 2 txserclk to txsync delay 230 ns t 3 txserclk to txser data delay 230 ns t 4 rising edge of txserclk to rising edge of txch - clk 13 ns t 5 rising edge of txchclk to valid txchn[4:0] data 6 ns t 6 txserclk to txsig delay 230 ns t 7 txserclk to txfract delay 110 ns f igure 2. f ramer s ystem t ransmit t iming d iagram (b ase r ate /n on -m ux ) txmsync txserclk txser txsync txchn[4:0] (output) txchclk (output) txchn_0 (txsig) txchn_1 (txfract) t 1 t 3 t 5 t 2 t 4 t 6 t 7 a b cd
xrt86vl34 43 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 ac electrical characteristics receive framer (base rate/non-mux) test conditions: ta = 25c, vdd = 3.3v + 5% unless otherwise specified s ymbol p arameter m in . t yp . m ax . u nits c onditions rxserclk as an output t 8 rising edge of rxserclk to rising edge of rxcasync 4 ns t 9 rising edge of rxserclk to rising edge of rxcrcsync 4 ns t 10 rising edge of rxserclk to rising edge of rxsync (rxsync as output) 4 ns t 11 rising edge of rxserclk to rising edge of rxser 6 ns t 12 rising edge of rxserclk to rising edge of valid rxchn[4:0] data 6 ns rxserclk as an input t 13 rising edge of rxserclk to rising edge of rxcasync 8 ns t 14 rising edge of rxserclk to rising edge of rxcrcsync 8 ns t 15 rising edge of rxserclk to rising edge of rxsync (rxsync as output) 10 ns t 15 rising edge of rxserclk to rising edge of rxsync (rxsync as input) 230 ns t 16 rising edge of rxserclk to rising edge of rxser 10 ns t 17 rising edge of rxserclk to rising edge of valid rxchn[4:0] data 9 ns f igure 3. f ramer s ystem r eceive t iming d iagram (r x serclk as an o utput ) rxcrcsync rxcasync rxserclk (output) rxser rxsync rxchn[4:0] t 8 t 9 t 10 t 11 t 12
xrt86vl34 44 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description f igure 4. f ramer s ystem r eceive t iming d iagram (r x serclk as an i nput ) rxcrcsync rxcasync rxserclk (input) rxser rxsync rxchn[4:0] t 13 t 14 t 15 t 16 t 17
xrt86vl34 45 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 ac electrical characteristics transmit framer (hmvip/h100 mode) f igure 5. f ramer s ystem t ransmit t iming d iagram (hmvip and h100 m ode ) n ote : setup and hold time is not valid from txinclk to txserclk as txinclk is used as the timing source for the back plane interface and txserclk is used as the timing source on the line side. test conditions: ta = 25c, vdd = 3.3v + 5% unless otherwise specified s ymbol p arameter m in . t yp . m ax . u nits c onditions t 1 txsync setup time - hmvip mode 7 ns t 2 txsync hold time - hmvip mode 4 ns t 3 txsync setup time - h100 mode 7 ns t 4 txsync hold time - h100 mode 4 ns t 5 txser setup time - hmvip and h100 mode 6 ns t 6 txser hold time - hmvip and h100 mode 3 ns t 7 txsig setup time - hmvip and h100 mode 6 ns t 8 txsig hold time - hmvip and h100 mode 3 ns txsync (h100 mode) txchn_0 (txsig) t 4 a b cd t 3 txserclk txser t 5 t 6 t 7 t 8 txsync (hmvip mode) t 2 t 1 txinclk (16mhz)
xrt86vl34 46 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description ac electrical characteristics receive framer (hmvip/h100 mode) n ote : both rxserclk and rxsync are inputs f igure 6. f ramer s ystem r eceive t iming d iagram (hmvip/h100 m ode ) test conditions: ta = 25c, vdd = 3.3v + 5% unless otherwise specified s ymbol p arameter m in . t yp . m ax . u nits c onditions t 1 rxsync setup time - hmvip mode 4 ns t 2 rxsync hold time - hmvip mode 3 ns t 3 rxsync setup time - h100 mode 5 ns t 4 rxsync hold time - h100 mode 3 ns t 5 rising edge of rxserclk to rising edge of rxser delay 11 ns rxsync (h100 mode) t 4 t 3 rxser t 5 rxsync (hmvip mode) t 2 t 1 rxserclk (16mhz)
xrt86vl34 47 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 ac electrical characteristics transmit overhead framer test conditions: ta = 25c, vdd = 3.3v + 5% unless otherwise specified s ymbol p arameter m in . t yp . m ax . u nits c onditions t 18 txsync setup time (falling edge txserclk) 6 ns t 19 txsync hold time (falling edge txserclk) 4 ns t 20 rising edge of txserclk to txohclk 12 ns f igure 7. f ramer s ystem t ransmit o verhead t iming d iagram txserclk txsync t 18 t 19 txohclk t 20
xrt86vl34 48 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description ac electrical characteristics receive overhead framer test conditions: ta = 25c, vdd = 3.3v + 5% unless otherwise specified s ymbol p arameter m in . t yp . m ax . u nits c onditions rxserclk as an output t 21 rising edge of rxserclk to rising edge of rxsync (rxsync as output) 4 ns t 22 rising edge of rxserclk to rising edge of rxo - hclk 6 ns t 23 rising edge of rxserclk to rising edge of rxoh 8 ns rxserclk as an input t 24 rising edge of rxserclk to rising edge of rxsync (rxsync as output) 12 ns t 24 rising edge of rxserclk to rising edge of rxsync (rxsync as input) 230 ns t 25 rising edge of rxserclk to rising edge of rxo - hclk 12 ns t 26 rising edge of rxserclk to rising edge of rxoh 15 ns f igure 8. f ramer s ystem r eceive o verhead t iming d iagram (r x serclk as an o utput ) f igure 9. f ramer s ystem r eceive o verhead t iming d iagram (r x serclk as an i nput ) rxserclk (output) rxohclk rxsync rxoh t 21 t 22 t 23 rxoh interface with rxserclk as an input rxoh t 24 t 25 t 26 rxserclk (input) rxohclk rxsync
xrt86vl34 49 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 t able 5: e1 r eceiver e lectrical c haracteristics vdd io = 3.3v + 5% , vdd core = 1.8v + 5% , t a = -40 to 85c, unless otherwise specified p arameter m in . t yp . m ax . u nit t est c onditions receiver loss of signal: number of consecutive zeros before rlos is set input signal level at rlos rlos de-asserted 15 12.5 32 20 db % ones cable attenuation @1024khz itu-g.775, etsi 300 233 receiver sensitivity (short haul with cable loss) 11 db with nominal pulse amplitude of 3.0v for 120 and 2.37v for 75 applica - tion. receiver sensitivity (long haul with cable loss) 0 43 db with nominal pulse amplitude of 3.0v for 120 and 2.37v for 75 applica - tion. input impedance 15 k input jitter tolerance: 1 hz 10khz-100khz 37 0.3 uipp uipp itu g.823 recovered clock jitter transfer corner frequency peaking amplitude - 20 0.5 khz db itu g.736 jitter attenuator corner fre - quency (-3db curve) (jabw=0) (jabw=1) - 10 1.5 - hz hz itu g.736 return loss: 51khz - 102khz 102khz - 2048khz 2048khz - 3072khz 12 8 8 - - db db db itu-g.703
xrt86vl34 50 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description t able 6: t1 r eceiver e lectrical c haracteristics vdd io = 3.3v + 5% , vdd core = 1.8v + 5%, t a =-40 to 85c, unless otherwise specified p arameter m in . t yp . m ax . u nit t est c onditions receiver loss of signal: number of consecutive zeros before rlos is set input signal level at rlos rlos clear 15 12.5 175 20 - - - db % ones cable attenuation @772khz itu-g.775, etsi 300 233 receiver sensitivity (short haul with cable loss) 12 - db with nominal pulse amplitude of 3.0v for 100 termination receiver sensitivity (long haul with cable loss) normal extended 0 0 - 36 45 db db with nominal pulse amplitude of 3.0v for 100 termination input impedance 15 - k jitter tolerance: 1hz 10khz - 100khz 138 0.4 - - - - uipp at&t pub 62411 recovered clock jitter transfer corner frequency peaking amplitude - - 10 - 0.1 khz db tr-tsy-000499 jitter attenuator corner frequency (-3db curve) - 3 hz at&t pub 62411 return loss: 51khz - 102khz 102khz - 2048khz 2048khz - 3072khz - - - 14 20 16 - - - db db db t able 7: e1 t ransmitter e lectrical c haracteristics vdd io = 3.3v + 5% , vdd core = 1.8v + 5%, t a =-40 to 85c, unless otherwise specified p arameter m in . t yp . m ax . u nit t est c onditions ami output pulse amplitude: 75 application 120 application 2.13 2.70 2.37 3.00 2.60 3.30 v v 1:2 transformer output pulse width 224 244 264 ns output pulse width ratio 0.95 - 1.05 - itu-g.703 output pulse amplitude ratio 0.95 - 1.05 - itu-g.703
xrt86vl34 51 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 jitter added by the transmitter output - 0.025 0.05 uipp broad band with jitter free tclk applied to the input. output return loss: 51khz -102khz 102khz-2048khz 2048khz-3072khz 15 9 8 - - - - - - db db db etsi 300 166 t able 8: e1 t ransmit r eturn l oss r equirement f requency r eturn l oss ets 300166 51-102khz 6db 102-2048khz 8db 2048-3072khz 8db t able 9: t1 t ransmitter e lectrical c haracteristics vdd io = 3.3v + 5% , vdd core = 1.8v + 5% , t a =-40 to 85c, unless otherwise specified p arameter m in . t yp . m ax . u nit t est c onditions ami output pulse amplitude: 2.4 3.0 3.60 v 1:2 transformer measured at dsx-1. output pulse width 338 350 362 ns ansi t1.102 output pulse width imbalance - - 20 - ansi t1.102 output pulse amplitude imbalance - - + 200 mv ansi t1.102 jitter added by the transmitter output - 0.025 0.05 uipp broad band with jitter free tclk applied to the input. output return loss: 51khz -102khz 102khz-2048khz 2048khz-3072khz - - - 17 12 10 - - - db db db t able 7: e1 t ransmitter e lectrical c haracteristics vdd io = 3.3v + 5% , vdd core = 1.8v + 5%, t a =-40 to 85c, unless otherwise specified p arameter m in .t yp .m ax .u nit t est c onditions
xrt86vl34 52 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description f igure 10. itu g.703 p ulse t emplate t able 10: t ransmit p ulse m ask s pecification test load impedance 75 resistive (coax) 120 resistive (twisted pair) nominal peak voltage of a mark 2.37v 3.0v peak voltage of a space (no mark) 0 + 0.237v 0 + 0.3v nominal pulse width 244ns 244ns ratio of positive and negative pulses imbalance 0.95 to 1.05 0.95 to 1.05 10% 10% 10% 10% 10% 10% 269 ns (244 + 25) 194 ns (244?50) 244 ns 219 ns (244 ? 25) 488 ns (244 + 244) 0% 50% 20% v = 100% nominal puls e note ? v corresponds to the nominal peak value. 20% 20%
xrt86vl34 53 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 f igure 11. dsx-1 p ulse t emplate ( normalized amplitude ) t able 11: dsx1 i nterface i solated pulse mask and corner points m inimum curve m aximum curve t ime (ui) n ormalized amplitude t ime (ui) n ormalized amplitude -0.77 -.05v -0.77 .05v -0.23 -.05v -0.39 .05v -0.23 0.5v -0.27 .8v -0.15 0.95v -0.27 1.15v 0.0 0.95v -0.12 1.15v 0.15 0.9v 0.0 1.05v 0.23 0.5v 0.27 1.05v 0.23 -0.45v 0.35 -0.07v 0.46 -0.45v 0.93 0.05v 0.66 -0.2v 1.16 0.05v 0.93 -0.05v 1.16 -0.05v
xrt86vl34 54 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description t able 12: ac e lectrical c haracteristics vdd io = 3.3v + 5% , vdd core = 1.8v + 5%, t a =25c, unless otherwise specified p arameter s ymbol m in . t yp . m ax . u nits mclkin clock duty cycle 40 - 60 % mclkin clock tolerance - 50 - ppm
xrt86vl34 55 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 microprocessor interface i/o timing i ntel i nterface t iming - a synchronous the signals used for the intel microprocessor interface are: address latch enable (ale), read enable ( rd ), write enable ( wr ), chip select ( cs ), address and data bits. the microprocessor interface uses minimum external glue logic and is compatible with the timings of the 8051 or 80188 family of microprocessors. the ale signal can be tied ?high? if this signal is not available, and the corresponding timing interface is shown in figure 12 and table 13 . f igure 12. i ntel p i nterface t iming d uring p rogrammed i/o r ead and w rite o perations w hen ale i s n ot t ied ?high? t able 13: i ntel m icroprocessor i nterface t iming s pecifications s ymbol p arameter m in m ax u nits t 0 valid address to cs falling edge and ale rising edge 0 - ns t 1 ale falling edge to rd assert 5 - ns t 2 rd assert to rdy assert - 320 ns na rd pulse width (t 2 ) 320 - ns t 3 ale falling edge to wr assert 5 - ns t 4 wr assert to rdy assert - 320 ns na wr pulse width (t 4 ) 320 - ns t 5 ale pulse width(t 5 ) 10 ns cs a ddr[14:0] ale data[7:0] rd wr rdy valid data for readback data available to write into the liu read operation write operation t 0 t 0 t 1 t 4 t 2 t 3 valid address valid address t 5 t 5
xrt86vl34 56 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description f igure 13. i ntel p i nterface t iming d uring p rogrammed i/o r ead and w rite o perations w hen ale i s t ied ?high? t able 14: i ntel m icroprocessor i nterface t iming s pecifications s ymbol p arameter m in m ax u nits t 0 valid address to cs falling edge 0 - ns t 1 cs falling edge to rd assert 0 - ns t 2 rd assert to rdy assert - 320 ns na rd pulse width (t 2 ) 320 - ns t 3 cs falling edge to wr assert 0 - ns t 4 wr assert to rdy assert - 320 ns na wr pulse width (t 4 ) 320 - ns cs a ddr[14:0] ale data[7:0] rd wr rdy valid data for readback data available to write into the liu read operation write operation t 0 t 0 t 1 t 4 t 2 t 3 valid address valid address
xrt86vl34 57 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 m otorola a sychronous i nterface t iming the signals used in the motorola microprocessor interface mode are: address strobe (as), data strobe ( ds ), read/write enable (r/ w ), chip select ( cs ), address and data bits. the interface is compatible with the timing of a motorola 68000 microprocessor family. the interface timing is shown in figure 14 . the i/o specifications are shown in table 15 . f igure 14. m otorola a sychronous m ode i nterface s ignals d uring p rogrammed i/o r ead and w rite o perations t able 15: m otorola a sychronous m ode m icroprocessor i nterface t iming s pecifications s ymbol p arameter m in m ax u nits t 0 valid address to cs falling edge 0 - ns t 1 cs falling edge to ds (pin rd _ ds ) assert 0 - ns t 2 ds assert to dtack assert - 320 ns na ds pulse width (t 2 ) 320 - ns t 3 cs falling edge to as (pin ale_as) falling edge 0 - ns cs addr[6:0] data[7:0] rd_ds wr_r/w rdy_dtack valid data for readback data available to write into the liu read operation write operation t 0 t 0 t 1 t 2 valid address valid address t 3 t 3 t 1 t 2 ale_as
xrt86vl34 58 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description p ower pc 403 s ychronous i nterface t iming the signals used in the power pc 403 synchronus microprocessor interface mode are: address strobe (as), microprocessor clock (upclk), data strobe ( ds ), read/write enable (r/ w ), chip select ( cs ), address and data bits. the interface timing is shown in figure 15 . the i/o specifications are shown in table 16 . f igure 15. p ower pc 403 i nterface s ignals d uring p rogrammed i/o r ead and w rite o perations t able 16: p ower pc 403 m icroprocessor i nterface t iming s pecifications s ymbol p arameter m in m ax u nits t 0 valid address to cs falling edge 0 - ns t 1 cs falling edge to we assert 0 - ns t 2 we assert to ta assert - 320 ns na we pulse width (t 2 ) 320 - ns t 3 cs falling edge to ts falling edge 0 - t dc pclk duty cycle 40 60 % t cp pclk clock period 20 - ns cs addr[14:0] data[7:0] we r/w ta valid data for readback data available to write into the liu read operation write operation t 0 t 0 t 2 valid address valid address t 3 t 3 t 1 t 2 ts upclk t cp t dc
xrt86vl34 59 quad t1/e1/j1 framer/liu combo - hardware description rev. v1.2.0 package dimensions ordering information p roduct n umber p ackage o perating t emperature r ange xrt86vl34ib 225 lead pbga -40 0 c to +85 0 c e 225 ball plastic ball grid array (19.0 mm x 19.0 mm, 1.0mm pitch pbga) rev. 1.00 symbol min max min max a 0.049 0.096 1.24 2.45 a1 0.016 0.024 0.40 0.60 a2 0.013 0.024 0.32 0.60 a3 0.020 0.048 0.52 1.22 d 0.740 0.756 18.80 19.20 d1 0.669 bsc 17.00 bsc d2 0.665 0.669 16.90 17.00 b 0.020 0.028 0.50 0.70 e 0.039 bsc 1.00 bsc inches millimeters note: the control dimension is in millimeter. 1 2 4 3 7 86 5 1 7 1 6 1 4 1 5 1 2 1 3 1 1 1 0 9 1 8 a b c d e f g h j k l m n p r t u v d d1 d d1 a1 feature / mark d2 a a 1 a 2 a 3 e b (a1 corner feature is mfger option) seating plane
60 notice exar corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. exar corporation assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. charts and schedules contained here in are only for illustration purposes and may vary depending upon a user?s specific application. while the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. exar corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the li fe support system or to significantly affect its safety or effectiveness. products are not authorized for use in such applications unless exar corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; (c ) potential liability of exar corporation is adequately protected under the circumstances. copyright 2007 exar corporation datasheet january 2007. reproduction, in part or whole, without the prior written consent of exar corporation is prohibited. xrt86vl34 rev. v1.2.0 quad t1/e1/j1 framer/liu combo - hardware description revision history r evision # d ate d escription v1.2.0 january 29, 2007 initial release to production version.

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