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Frame synchronization output at 8 kHz. FSO is synced to CLKO and to FSI (if FSI is provided). ë +)2 2 High Frequency Outputï HFO is used to derive CLKO. HFO can also clock external devices. HFO is always a multiple of CLKO (CLKO x2, x3, or x4). Actual frequencies are determined by device, CLKI and CLKO frequencies and Mode Select (SEL) input, as listed in Table 2. ê &/., , Clock Inputï Input clock (1.544, 2.048 or 4.096 MHz) to be converted. é &/.2 2 Clock Outputï Output clock (1.544, 2.048 or 4.096 MHz) derived from CLKI. è *1' ¤ Groundï ç 6(/ , Mode Select. controls frequency conversion as listed in Table 2. When SEL = High, higher frequency CLKI (2.048 for LXP600A and LXP602, or 4.096 MHz for LXP604) is converted to 1.544 MHz CLKO. When SEL = Low, 1.544 MHz CLKI is converted to higher frequency CLKO (2.048 for LXP600A and LXP602, or 4.096 MHz for LXP604). æ FSI , Frame Sync Inputï 8 kHz frame synchronization pulse. 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Inputs must be applied either simultaneously with or after the power supply VCC. 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Transient currents of up to 100 mA will not cause SCR latch-up. 7DEOH éã 5HFRPPHQGHG 2SHUDWLQJ &RQGLWLRQV 3DUDPHWHU 6XSSO\ YROWDJHì 6XSSO\ FXUUHQW 2SHUDWLQJ WHPSHUDWXUH 6\PERO 0LQ 7\S 0D[ 8QLWV 9&& ,&& ,&& 723 éïæè ¤ ¤ ðéí èïí ¤ ¤ ¤ èïëè å ìé åè 9 P$ P$ •& 7HVW &RQGLWLRQV 1R 77/ ORDGLQJ )XOO 77/ ORDGLQJ ìï 9ROWDJHV ZLWK UHVSHFW WR JURXQG XQOHVV RWKHUZLVH VSHFLILHGï 7DEOH èã 'LJLWDO (OHFWULFDO &KDUDFWHULVWLFV õ2YHU 5HFRPPHQGHG 5DQJHô 3DUDPHWHU ,QSXW /RZ YROWDJH ,QSXW +LJK YROWDJH 2XWSXW /RZ YROWDJH õ,2/ òìïç P$ô 2XWSXW /RZ YROWDJH õ,2/ á òìí“$ô 2XWSXW +LJK YROWDJH õ,2+ ðíïé P$ô 2XWSXW +LJK YROWDJH õ,2+ á ðìí“$ô ,QSXW OHDNDJH FXUUHQW çðç 6\P 0LQ 0D[ 8QLWV 9,/ 9,+ 92/ 92/ 92+ 92+ ,// ¤ ëïí ¤ ¤ ëïé éïè ðìí íïå ¤ íïé íïë ¤ ¤ ìí 9 9 9 9 9 9 “$ L1 7HVW 6SHFLILFDWLRQV 7DEOH çã 2XWSXW -LWWHU 6SHFLILFDWLRQV 3DUDPHWHU 6\P )UHTXHQF\ 6SHFì 7\Së 0D[ 8QLWV 7HVW &RQGLWLRQV 7-ì 1R %DQGOLPLWLQJ ìí +] WR éí N+] å N+] WR éí N+] íïíèí íïíëè íïíëè ëí +] WR ìíí N+] ìïèíí íïëíí íïíìí íïííè íïííç íïíëè íïëí íïíìí íïíìë íïíêè 8, SS 8, SS 8, SS UI pp íïíìè íïíëè 8, SS &/., ëïíéå RU éïíäç 0+] -, í FSI DSSOLHG &/., ìïèéé 0+]ñ -, í FSI DSSOLHG 2XWSXW -LWWHU RQ &/.2 &/.2 ìïèéé 0+] õ$OO &/$'6ô 2XWSXW -LWWHU RQ &/.2 &/.2 ëïíéå 0K] õ/;3çíí$ DQG çíë RQO\ô 7-ë ìå N+] WR ìíí N+] 1. Specifications from AT&T Publication 62411 and ITU Recommendations G.823 (for 1.544 MHz and 2.048 MHz, respectively). ëï 7\SLFDO YDOXHV DUH DW ëè ƒ& DQG DUH IRU GHVLJQ DLG RQO\â QRW JXDUDQWHHG DQG QRW VXEMHFW WR SURGXFWLRQ WHVWLQJï )LJXUH éã Nominal Jitter Transfer - 2.048 MHz CLKI to 1.544 MHz CLKO (Input Jitter = 0.25 UI) Net Gain ns ns 1.150 1.100 1.050 1.000 0.950 0.900 0 20 kHz 40 kHz 60 kHz 80 kHz Jitter Frequency )LJXUH èã Nominal Jitter Transfer - 1.544 MHz CLKI to 2.048 MHz CLKO (Input Jitter = 0.25 UI) Net Gain ns ns 1.150 1.100 1.050 1.000 0.950 0.900 0.850 0 20 kHz 40 kHz 60 kHz 80 kHz Jitter Frequency L1 çðæ /;3çíí$ñ /;3çíë DQG /;3çíé /RZð-LWWHU &ORFN $GDSWHUV õ&/$'Vô 7DEOH æã 7LPLQJ 9DOXHV õVHH )LJXUH çô 3DUDPHWHU 6\P 0LQLPXP 0D[LPXP 8QLWV &DSWXUH UDQJH RQ &/., ¤ ‘ìíííí ¤ SSP /RFN UDQJH RQ &/., ¤ ‘ìíííí ¤ SSP ,QSXW FORFN GXW\ F\FOH ¤ êè çè ø 5LVHîIDOO WLPH RQ &/.,ñ FSI 7UI ¤ éí QV 5LVHîIDOO WLPH RQ &/.2ñ FSOñ +)2 ZLWK D ëè S) ORDG 7UI ¤ éí QV )LJXUH çã Rise and Fall Times 7UI 7UI 9,+î92+ 9,/î92/ 7DEOH åã 7LPLQJ 9DOXHV õVHH )LJXUHV æ WKURXJK ììô 6\P 0LQLPXP 7\Sì 0D[LPXP 8QLWV FSI setup time from CLKI rising 7VXL éç ¤ ¤ ns FSI/CKLI hold time 7KL êí ¤ ¤ ns FSI pulse width (low) 7ZL æç ¤ 7&/., CLKO delay from CLKI 7G& ðìè í òìè ns CLKO duty cycle &GF éä ¤ èì % FSO delay from HFO 7G) ðè ¤ êí ns FSO pulse width (low) 7:2 ¤ ¤ 7&/.2 CLKO delay from HFO 7G+ ðìè ¤ òìè 3DUDPHWHU ë ê ns ns ns ìï 7\SLFDO ILJXUHV DUH DW ëè ƒ& DQG DUH IRU GHVLJQ DLG RQO\â QRW JXDUDQWHHG DQG QRW VXEMHFW WR SURGXFWLRQ WHVWLQJï ëï 7&/., LV WKH SHULRG RI &/.,ï êï 7&/.2 LV WKH SHULRG RI &/.2ï çðå L1 7HVW 6SHFLILFDWLRQV )LJXUH æã LXP600A and LXP602 High to Low Frequency Conversion Frame Sync Alignment) &/., õëïíéå 0+]ô FSI 7VXL 7KL 7ZL 7G& &/.2 õìïèéé 0+]ô 7G+ FSO 7G) +)2 õçïìæç 0+]ô )LJXUH åã LXP604 High to Low Frequency Conversion Frame Sync Alignment) &/., õéïíäç 0+]ô FSI 7VXL 7KL 7ZL 7G& &/.2 õìïèéé 0+]ô 7G+ FSO 7G) +)2 õçïìæç 0+]ô L1 çðä /;3çíí$ñ /;3çíë DQG /;3çíé /RZð-LWWHU &ORFN $GDSWHUV õ&/$'Vô )LJXUH äã LXP600A Low to High Frequency Conversion Frame Sync Alignment &/., õìïèéé 0+]ô 7VXL 7ZL FSI 7KL 7G& 7G+ &/.2 õëïíéå 0+]ô 7ZR FSO 7G) +)2 õçïìéé 0+]ô )LJXUH ìíã LXP602 Low to High Frequency Conversion Frame Sync Alignment) &/., õìïèéé 0+]ô 7VXL FSI 7ZL 7KL 7G& &/.2 õëïíéå 0+]ô 7ZR FSO 7G+ 7G) +)2 õåïìäë 0+]ô )LJXUH ììã LXP604 Low to High Frequency Conversion Frame Sync Alignment) &/., õìïèéé 0+]ô 7VXL FSI 7ZL 7KL 7G& &/.2 õéïíäç 0+]ô FSO 7G+ 7ZR 7G) +)2 õåïìäë 0+]ô çðìí L1