genlinx tm gs9022a digital video serializer functional block diagram features device description the gs9022a is a drop-in replacement for the gs9022 in existing applications the gs9022a is a monolithic bipolar integrated circuit designed to serialize smpte 125m and smpte 244m bit parallel digital signals as well as other 8 or 10 bit parallel formats. this device performs the functions of sync detection, parallel to serial conversion, data scrambling (using the x 9 + x 4 +1 algorithm), 10x parallel clock multiplication and conversion of nrz to nrzi serial data. the data rate is automatically set for smpte 259m data rates to 400 mb/s. other features include a lock detect output and an internal cable driver capable of driving two 75 ? loads. the device requires a single +5 volt or -5 volt supply and typically consumes 650 mw of power while driving two 75 ? loads. the 28 pin plcc packaging assures a small footprint for the complete encoder function. ? built-in 75 cable driver with two serial outputs standard independent operation space saving 28 pin plcc package 650 mw typical power dissipation (data output driving 75 load). supports bit rates to 400 mb/s accepts 8 bit and 10 bit ttl and cmos compatible parallel data inputs fully compatible with smpte 259m serial digital standard single +5 or -5 volt supply pb-free and green applications ?4? sc , 4:2:2 and 360 mb/s serial digital interfaces for: video cameras vtrs signal generators portable equipment data sheet ordering information revision date: june 2004 document no. 18325 - 01 gennum corporation p.o. box 489, stn. a, burlington, ontario, canada l7r 3y3 tel. +1 (905) 632-2996 fax. +1 (905) 632-5946 web site: www.gennum.com e-mail: info@gennum.com sync detect disable gs9022a pld loop filter r vco pclk parallel data in (10 bits) p/s converter sync detect regulator cap phase frequency detect charge pump v co input latch div by 10 generator 3-12 13 17 28 25 sclk lock detect scrambler serial data serial data 23 22 14 lock detect 19 c osc 26 oscillator div by 2 generator rise time control nrz nrzi mux not recommended for new designs see gs9032 part number package temperature pb-free and green gs9022acpj 28 pin plcc oc to 70c no gs9022actj 28 pin plcc tape oc to 70c no GS9022ACPJE3 28 pin plcc oc to 70c yes gs9022actje3 28 pin plcc tape oc to 70c yes
2 of 7 18325 - 01 not recommended for new designs see gs9032 serial data outputs sdata, sdata bit rates br sdo 100 - 400 mb/s signal swing v sdo r l = 75 ? 720 800 880 mvp-p rise/fall times t r , t f (20 - 80%) 400 550 800 ps jitter t j 270 mb/s 240 - ps p-p note 1 lock time t lock c loop filt = 0.1f - 5 - ms auto standard r loop filt = 3.9k ? c osc = 0.1f parallel data & clock inputs risetime t r t a = 25c 500 - - ps setup t su 3- -ns hold t hold 3- -ns parameter symbol conditions min typ max units notes supply voltage v s operating range 4.75 5.0 5.25 v power consumption p d data outputs driving two 75 ? loads - 650 - mw t a = 25c supply current i s data outputs driving two 75 ? loads - 160 190 ma ttl inputs-high v ih t a = 25c 2.0 - - v ttl inputs-low v il t a = 25c - - 0.8 v logic input current i in - 2.5 6.0 a ttl outputs-high v oh t a = 25c 2.4 - - v ttl outputs-low v ol t a = 25c - - 0.5 v v cc = 5v, v ee = 0v, t a = 0c to 70c unless otherwise shown gs9022a - encoder dc electrical characteristics gs9022a - encoder ac electrical characteristics v cc = 5v, v ee = 0v, t a = 0c to 70c, unless otherwise shown parameter symbol conditions min typ max units notes absolute maximum ratings parameter value/units supply voltage 5.5 v input voltage range (any input) -v ee < v i < v cc dc input current (any one input) 10 ma power dissipation (v s = 5.25 v) 910 mw operating temperature range 0 c t a 70 c storage temperature range -65 c t s 150 c lead temperature (soldering 10 seconds) 260 c pin connections pd9 pck lock v ee v cc lf v ee in det pd2 pd3 pd4 pd5 pd6 pd7 pd8 sync det. disable v ccsd sdo sdo v ee v cc r vco pd1 pd0 v cc v cc c reg v ee c osc gs9022a top view 25 24 23 22 21 20 19 5 6 7 8 9 10 11 12 13 14 15 16 17 18 4 3 2 28 27 26 caution electrostatic sensitive devices do not open packages or handle except at a static-free workstation note 1: measured using pclk as trigger source on 1 ghz oscilloscope
3 of 7 18325 - 01 not recommended for new designs see gs9032 the charge pump delivers a 'charge packet' to the loop filter which is proportional to the system phase error. internal voltage clamps are used to constrain the loop filter voltage between approximately 1.8 and 3.4 volts. the vco, constructed from a current-controlled multivibrator, features operation in excess of 400 mb/s and a wide pull range ( 40% of centre frequency). vco centre frequency selection the wide vco pull range allows the pll to compensate for variations in device processing, temperature variations and changes in power supply voltage, without external adjustment. a single external resistor is used to set the vco current for all standards. the c osc pin is used to configure the vco of the gs9022a in one of three modes, as shown below: c osc mode 0.1f to gnd auto standard 10k resistor to vcc ?/2 on 10k resistor to gnd ?/2 off in auto standard mode, the capacitor sets the sweep rate at which the vco toggles between ? and ?/2. the ?/2 on and ?/2 off modes are used to configure the gs9022a vco for single standard operation. the lock detect circuit disables the serial data output when the loop is not locked. the lock detect output is available from pin 14 and is high when the loop is locked. the true and complement serial data, sdo and sdo are available from pins 22 and 23. these outputs will drive two 75 ? co-axial cables with smpte level serial digital video signals. phase locked loop the pll performs parallel clock multiplication and provides the timing signal for the serializer. it is composed of a phase/frequency detector, charge pump, vco , a divide-by-ten counter, and a divide by two counter. the phase/frequency detector allows a wider capture range and faster lock time than that which can be achieved with a phase discriminator alone. the discrimination of frequency also eliminates harmonic locking. with this type of discriminator, the pll can be over-damped for good stability without sacrificing lock time. the gs9022a serializer is a bipolar integrated circuit used to convert parallel data into a serial format according to the smpte 259m standard. the device encodes both eight and ten bit ttl-compatible parallel signals producing serial data rates up to 400 mb/s. it operates from a single five volt supply and is packaged in a 28 pin plcc. functional blocks within the device include the input latches, sync detector, parallel to serial converter, scrambler, nrz to nrzi converter, internal cable driver, pll for 10 x parallel clock multiplication and lock detect. the parallel data (pd0-pd9) and parallel clock (pckin) are applied via pins 3 through 13 respectively. sync detector the sync detector looks for the reserved words 000-003 and 3fc-3ff, in ten bit hexadecimal, or 00 and ff in eight bit hexadecimal, used in the trs-id sync word. when the occurrence of either all zeros or all ones at inputs pd2-pd9 is detected, the lower two bits pd0 and pd1 are forced to zeros or ones, respectively. this makes the system compatible with eight or ten bit data. for non - smpte standard parallel data, a logic input, sync detect disable (25) is available to disable this feature. scrambler the scrambler is a linear feedback shift register used to pseudo-randomize the incoming serial data according to the fixed polynomial (x 9 +x 4 +1). this minimizes the dc component in the output serial data stream. the nrz to nrzi converter uses another polynomial (x+1) to convert a long sequence of ones to a series of transitions, minimizing polarity effects. gs9022a digital video serializer - detailed device description
4 of 7 18325 - 01 not recommended for new designs see gs9032 gs9022a pin descriptions pin no. symbol type description 1 v cc power supply: most positive power supply connection for the pll and scrambler. 2 v cc power supply: most positive power supply connection for the parallel data inputs and p/s converter. 3-12 pd0-pd9 i ttl level inputs of the parallel data words. pd0 is the lsb and pd9 is the msb. 13 pckin i ttl level input of the parallel clock. 14 lock det o ttl level output which goes high when the internal pll is locked. 15 v ee power supply: most negative power supply connection. 16 v cc power supply: most positive power supply connection for the pll and scrambler. 17 lf i connection for the r-c loop filter components. 18 v ee power supply: most negative power supply connection. 19 r vco i vco frequency setting resistor. a 1% resistor is required. 20 v cc power supply: most positive power supply connection for the pll and scrambler. 21 v ee power supply: most negative power supply connection. 22, 23 sdo, sdo i 75 ? cable driver outputs (true and inverse). 24 v ccsd power supply: most positive power supply for cable driver outputs. 25 sync det ttl level input that disables the internal sync detector when high. this allows the gs9022 to disable i serialize 8 or 10 bit non-smpte standard parallel data. 26 c osc i toggles vco between ? and ?/2. 27 v ee i power supply: most negative power supply connection. 28 c reg i compensation capacitor for internal voltage regulator that requires decoupling with a 0.1 f capacitor located as close as possible to the pin in series with an 820 ? resistor.
5 of 7 18325 - 01 not recommended for new designs see gs9032 input / output circuits fig. 3 output circuit fig. 1 sync detect disable, parallel data, parallel clock v ee 1k 1k v cc pins 3-12 13, 25 v r1 fig. 2 lock detect fig. 4 input clock / data timing lock detect 10k v ee v cc pin 14 v cc 400 400 v out pin 23 v out pin 22 v cc v cc t su t hold t clkl = t clkh parallel clock plck 50% parallel data pdn
6 of 7 18325 - 01 not recommended for new designs see gs9032 loop filter voltage (v) fig. 8 loop filter voltage vs temperature typical performance curves (v s = 5v, t a = 25 c unless otherwise shown) fig. 7 vco frequency vs loop filter voltage 0 10 20 30 40 50 60 70 vco frequency (mhz) typical loop filter voltage (v) 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 serial output (mv) fig. 5 output jitter jitter p-p (ps) 0 10 20 30 40 50 60 70 ambient temperature (c) fig. 6 serial data output level vs temperature data rate (mbps) 3.1 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.3 600 550 500 450 400 350 300 250 200 150 100 50 0 400 350 300 250 200 150 100 50 50 100 150 200 250 300 350 400 450 810 800 790 780 770 760 temperature (c) r vco =2.2k 360 mbps 143 mbps 270 mbps ?/2 off ?/2 on 177 mbps r vco =2.2k auto standard mode r vco =2.2k auto standard mode
7 of 7 18325 - 01 not recommended for new designs see gs9032 1.0 68 1p8 75 1.0 68 1p8 75 3 4 5 6 7 8 9 10 11 12 13 data 0 data 1 data 2 data 3 data 4 data 5 data 6 data 7 data 8 data 9 clock 15 18 21 27 28 26 19 1 2 16 20 24 14 25 pd 0 pd 1 pd 2 pd 3 pd 4 pd 5 pd 6 pd 7 pd 8 pd 9 pck in 5k 10 0.1 100 100 100 100 100 100 100 100 100 100 100 v cc v cc v cc v cc v cc v ccsd l o c k d e t e c t s y n c d i s sdo sdo lf 22 23 17 r v c o c o s c c r e g v ee v ee v ee v ee 10pf 820 ? 0.1 0.1 0.1 2k2 1% 0.1 3.9k 1m v cc 150 150 gs9022a + all resistors in ohms, all capacitors in microfarads unless otherwise stated. fig. 9 gs9022a application circuit application ciruit figure 9 shows a typical application circuit of the gs9022a driving a 75 ? cable. gennum corporation assumes no responsibility for the use of any circuits described herein and makes no representations that the y are free from patent infringement. ? copyright may 2001 gennum corporation. all rights reserved. printed in canada. document identification: data sheet the product is in production. gennum reserves the right to make changes at any time to improve reliability, function or design, in order to provide the best product possible. revision notes: added lead-free and green information. for latest product information, visit www.gennum.com gennum corporation mailing address: p.o. box 489, stn. a, burlington, ontario, canada l7r 3y3 tel. +1 (905) 632-2996 fax +1 (905) 632-2814 shipping address: 970 fraser drive, burlington, ontario, canada l7l 5p5 gennum japan corporation shinjuku green tower building 27f 6-14-1, nishi shinjuku shinjuku-ku, tokyo 160-0023 japan tel: +81 (03) 3349-5501 fax: +81 (03) 3349-5505 gennum uk limited 25 long garden walk, farnham, surrey, england gu9 7hx tel: +44 (0) 1252 747000 fax: +44 (0) 1252 726523
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