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XRT7298 Block Diagram 5HY XRT7298 PIN CONFIGURATION 5&/. 51'$7$ 5&/. 51'$7$ 5/223 53'$7$ 5/223 53'$7$ //223 ,&7 //223 ,&7 '6676( 7;/(9 '6676( 7;/(9 7$26 9 7$26 77,3 ''$ ''' 9 ''$ 73'$7$ 75,1* 73'$7$ 71'$7$ *1'$ 71'$7$ *1'$ 7&/. 07,3 7&/. 07,3 9 ''' 9 77,3 75,1* *1'' 05,1* *1'' 05,1* (1&2',6 '02 (1&2',6 '02 '(&2',6 5&/.2 '(&2',6 %39 5326 %39 3//287 51(* 3//287 28 Lead PDIP (0.600”) 5&/.2 5326 51(* 28 Lead SOJ (Jedec,0.300”) PIN DESCRIPTION Pin # Symbol 5&/. 5/223 T ype , , //223 , '6676 ( , 7$26 , 9''' 73'$7$ , 71'$7$ , 7&/. *1'' (1&2',6 , '(&2',6 , , Description ,QSXW VDPSOLQJ FORFN IRU 53'$7$ DQG 51'$7$ Remote Loop Back. $ KLJK RQ WKLV SLQ FDXVHV 53'$7$ DQG 51'$7$ WR WUDQVPLWWHG WR WKH OLQH XVLQJ 5&/. 6HWWLQJ 5/223 DQG //223 KLJK VLPXOWDQHRXVO\ LV QRW SHUPLWWHG Local Loop Back. $ KLJK RQ WKLV SLQ FDXVHV 73'$7$ DQG 71'$7$ WR SDVV WKURXJK WKH HQ FRGHU DQG RXWSXW DW 5326 DQG 51(* UHVSHFWLYHO\ 6HWWLQJ //223 DQG 5/223 KLJK VLPXOWD QHRXVO\ LV QRW SHUPLWWHG DS3, STS-1 or E3 Select Pin $ KLJK RQ WKLV SLQ VHOHFWV '6 RU 676 RSHUDWLRQ DQG VHWV WKH HQFRGHU DQG GHFRGHU LQ %=6 PRGH $ ORZ VHOHFWV ( DQG VHWV WKH HQFRGHU DQG GHFRGHU LQ +'% PRGH T ransmit All Ones Select $ KLJK RQ WKLV SLQ FDXVHV D FRQWLQXRXV $0, DOO ·V SDWWHUQ WR EH WUDQVPLWWHG WR WKH OLQH 7KH IUHTXHQF\ LV GHWHUPLQHG E\ 7&/. 5 V Digital Supply ± IRU DOO ORJLF FLUFXLWU\ T ransmit Positive Data 73'$7$ LV VDPSOHG RQ WKH IDOOLQJ HGJH RI 7&/. 3LQ DQG SLQ FDQ EH WLHG WRJHWKHU IRU ELQDU\ LQSXW VLJQDOV T ransmit NegativeData. 71'$7$ LV VDPSOHG RQ WKH IDOOLQJ HGJH RI 7&/. 3LQ DQG SLQ FDQ EH WLHG WRJHWKHU IRU ELQDU\ LQSXW VLJQDOV T ransmit Clock IRU 73'$7$ DQG 71'$7$ Digital Ground IRU DOO ORJLF FLUFXLWU\ Encoder Disable. $ KLJK RQ WKLV SLQ GLVDEOHV %=6 RU +'% HQFRGLQJ IXQFWLRQV XQOHVV RYHU ULGGHQ E\ 7$26 UHTXHVW 7KLV SLQ PXVW EH VHW KLJK LI 73'$7$ DQG 71'$7$ DUH DOUHDG\ HQ FRGHG DecoderDisable $ KLJK RQ WKLV SLQ GLVDEOHV %=6 RU +'% GHFRGLQJ IXQFWLRQV Receive Clock Input. 5HY XRT7298 PIN DESCRIPTION (CONT’D) Pin # Symbol %39 T ype 2 3//287 51(* 5326 5&/.2 '02 2 2 2 2 2 05,1* , 07,3 , *1'$ 75,1* 2 77,3 2 9''$ 7;/(9 , ,&7 , 53'$7$ , 51'$7$ , Description 7KLV SLQ JRHV KLJK IRU RQH ELW SHULRG ZKHQ D ELSRODU YLRODWLRQ QRW FRUUHVSRQGLQJ WR WKH DSSURSULDWH FRGLQJ UXOH RU FRGLQJ HUURU LV GHWHFWHG LQ WKH 53'$7$ 51'$7$ VLJQDOV PLL Clock Output. &ORFN RXWSXW V\QFKURQL]HG WR 7&/. 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Receive NegativeData 15= LQSXW GDWD RI WKH GHFRGHU EORFN 6DPSOHG RQ IDOOLQJ HGJH RI 5&/. Bipolar Violation Output Note: 1 If a bipolarviolationoccurs,RPOS andRNEG cancorrespondto thedecoded versions of RNDAT A andRPDAT A respectively. If DECODIS is high,RPOS andRNEG alwaystrackRPDAT A andRNDAT A respectively. 5HY XRT7298 ELECTRICAL CHARACTERISTICS (See Figure 8 ) T est Conditions: VDD = 5V ± 5%, T A = -40qC to +85qC, unless otherwise specified. All timing characteristics are measuredwith 10pF loading. Symbol Parameter AC Electrical Characteristics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lectrical Characteristics 9''' 9''$ 9,/ 9,+ 92/ 92+ ,/ &, &/ '& 6XSSO\ 9ROWDJH Min. T yp. Max. Units QV QV QV QV QV QV QV QV QV QV QV QV 9 9''' 9''' ± P$ 9 9 9 9 P$ P$ S) S) 6XSSO\ &XUUHQW ,QSXW /RZ 9ROWDJH ,QSXW +LJK 9ROWDJH 2XWSXW /RZ 9ROWDJH ,287 P$ 2XWSXW +LJK 9ROWDJH ,287 P$ ,QSXW /HDNDJH &XUUHQW 3LQ ,QSXW 9 ,QSXW &DSDFLWDQFH /RDG &DSDFLWDQFH 9'' *1'' 9''' Notes: 1 Whentheencoderis enabled,a handlingdelayof six TCLK clockcyclesfor B3ZS andseven clockcyclesfor HDB3 alwaysexists betweenTPDA T A/TNDAT A andTTIP/TRING. The handlingdelayis reducedtothreeanda halfcycleswhentheen coderis disabled. 2 Whenthedecoderis enabled,a handlingdelayof six anda halfRCLK clockcycleswill alwaysexist betweenRPDAT A/RNDAT A andRPOS/RNEG. The handlingdelayis reducedto oneandhalfRCLK clockcycleswhenthedecoderis disabled. 3 Supply currentis measuredwithtransmittersendingall ones AMI signal andwithT ransmit Level (TXLEV) set to high. 4 All inputs exceptpin 19, 20 andpin 26. 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VKRXOG EH VHW KLJK :KHQ WKH GLVWDQFH LV OHVV WKDQ IW 7;/(9 VKRXOG EH VHW ORZ 6HWWLQJ 7;/(9 KLJK HQDEOHV WKH WUDQVPLWWHU WR VHQG RXW D QRPLQDO YROWDJH RI 9 SHDN DQG P9 SHDN ZKHQ ORZ 7KH VWDWH RI 7;/(9 SLQ Figure 2. T ransmit Pulse Amplitude T est Circuit KDV QR HIIHFW RQ ( RSHUDWLRQ DRIVER MONITOR 8VLQJ 77,3 DQG 75,1* DV LQSXW WKH GULYHU PRQLWRU GHWHFWV GULYHU IDLOXUH E\ PRQLWRULQJ WKH DFWLYLWLHV DW 07,3 DQG 05,1* ,I QR VLJQDO LV GHWHFWHG RQ WKHVH SLQV IRU 7&/. F\FOHV ± Value 7XUQ 5DWLR 3ULPDU\ ,QGXFWDQFH + ,VRODWLRQ 9ROWDJH 9UPV /HDNDJH ,QGXFWDQFH + P P F\FOHV '02 ZLOO EH VHW KLJK XQWLO WKH T able1. T ransmit T ransformer Characteristics QH[W $0, VLJQDO LV GHWHFWHG 5HY Parameter XRT7298 DS3 SIGNAL REQUIREMENTS AT THE DSX )RU '6 RSHUDWLRQ SXOVH FKDUDFWHULVWLFV DUH VSHFLILHG DW &XUUHQWO\ WZR LVRODWHG SXOVH WHPSODWH UHTXLUHPHQWV H[LVW WKH '6; ZKLFK LV DQ LQWHUFRQQHFWLRQ DQG WHVW SRLQW WKH $16, 7 SXOVH WHPSODWH See Table3 UHIHUUHG WR DV WKH FURVVFRQQHFW 7KH FURVVFRQQHFW H[LVWV 3 DQG WKH %HOOFRUH 751:7 SXOVH WHPSODWH DW WKH SRLQW ZKHUH WKH WUDQVPLWWHG VLJQDO UHDFKHV WKH SXOVH GLVWULEXWLRQ IUDPH MDFN WHPSODWHV 7KH '6; LQWHUFRQQHFWLRQ WUDQVPLWWHG E\ WKH ;57 andFigure PHHWV 7KH WKHVH VSHFLILFDWLRQ WDEOHV OLVW WKH VLJQDO UHTXLUHPHQWV Table1) 7KH ;57 FDQ WUDQVPLW WKURXJK IHHW RI $ FDEOH WR WKH '6; LQ '6 PRGH Parameter Specification /LQH 5DWH /LQH &RGH 7HVW /RDG 3XOVH 6KDSH 0ESV ± SSP %LSRODU ZLWK WKUHH VXEVWLWXWLRQ %=6 : p $Q LVRODWHG SXOVH PXVW ILW WKH WHPSODWH LQ Figure 3 RU Figure 4 7KH SXOVH DPSOLWXGH PD\ EH VFDOHG E\ D FRQVWDQW IDFWRU WR ILW WKH WHPSODWH 7KH SXOVH DPSOLWXGH PXVW EH EH WZHHQ 9SN DQG 9SN PHDVXUHG DW WKH FHQWHU RI WKH SXOVH )RU DQ DOO V WUDQVPLWWHG SDWWHUQ WKH SRZHU DW ± 0+] PXVW EH WR G%P DQG WKH SRZHU DW ± 0+] PXVW EH G%P WR G%P 3RZHU /HYHOV Notes : 1 The pulse templateproposedby G.703 standardsis shownin Figure 4 andspecifiedin T able4 The proposedG.703 standards furtherstatethatthevoltagein atimeslot containinga0 must notexceed 5% of thepeakpulse amplitude,exceptfortheresidue of precedingpulses. 2 The powerlevels specifiedbytheproposedG.703 standardsareidenticalexceptthatthepoweris tobe measuredin 3kHz bands. 3 The all 1s patternmust bea pureall 1s signal, withoutframingor othercontrolbits. p T able2. DSX•3 Interconnection Specification Lower Curve T ime 7 { { 7 { { 7 Upper Curve Equation T ime 7 { { 7 { > VLQ > 7 @@ S Equation > VLQ > 7@@ H S 7 T able3. DSX-3 Pulse T emplateBoundaries for ANSI T1.404 Standards (See Figure 3. ) Lower Curve T ime { 7 { { 7 { { 7 { Upper Curve Equation T ime { 7{ { 7{ { 7{ > VLQ > 7@@ S Equation > VLQ > 7@@ H S 7 T able4. DSX-3 Pulse T emplateBoundaries for Bellcore TR-NWT -000499Standards (See Figure 4) 5HY XRT7298 NormalizedAmplitudes Figure 3. DSX-3 Isolated Pulse T emplatefor ANSI T1.404 Standards Parameter /LQH 5DWH /LQH &RGH 7HVW /RDG 3RZHU /HYHOV )RU 676 RSHUDWLRQ WKH FURVVFRQQHFW LV UHIHUUHG DW WKH Table5 OLVWV WKH VLJQDO UHTXLUHPHQWV DW WKH 676; ,QVWHDG RI WKH '6 LVRODWHG SXOVH WHPSODWH DQ H\H GLDJUDP PDVN LV VSHFLILHG IRU 676 RSHUDWLRQ 7$76< 6HH Figure 4. DSX-3 Isolated Pulse T emplatefor Bellcore TR-NWT -000499 STS-1 SIGNAL REQUIREMENTS 676; T ime Slots-Normalized to Peak Location T ime Slots-Normalized to Peak Location Figure 5 Specification 0ESV %LSRODU ZLWK WKUHH VXEVWLWXWLRQ %=6 : p $ ZLGHEDQG SRZHU OHYHO PHDVXUHPHQW DW WKH 676; LQWHUIDFH XVLQJ D ORZ SDVV ILOWHU ZLWK D G% FXWRII IUHTXHQF\ RI DW OHDVW 0+] LV ZLWKLQ G%P DQG G%P T able5. STSX-1 Interconnection Specification NormalizedAmplitude Figure 5. STSX-1 Isolated Pulse T emplatefor Bellcore T A-TSY -000253 5HY ï ï ï ï ï NormalizedAmplitudes XRT7298 E3 SIGNAL REQUIREMENTS 7KH 7 LV GHVLJQHG WR WUDQVPLW SXOVHV WKDW FRQIRUP WR &&,77 UHFRPPHQGDWLRQ * Figure 6 VKRZV SXOVH PDVN UHTXLUHPHQW UHFRPPHQGHG LQ * DQG Table6 VKRZV WKH SXOVH VSHFLILFDWLRQV WKH ( QV 9 QV 1RPLQDO SXOVH QV QV QV QV &&,77 Figure 6. CCITT G.703 Pulse Mark at the 34,368-kbit/sInterface Parameter Value 3XOVH 6KDSH 1RPLQDOO\ 5HFWDQJXODU $OO PDUNV RI D YDOLG VLJQDO PXVW FRQ IRUP ZLWK WKH PDVN see LUUHVSHFWLYH RI WKH VLJQ 3DLUV ,Q (DFK 'LUHFWLRQ 2QH FRD[LDO SDLU 7HVW /RDG ,PSHGDQFH 1RPLQDO 3HDN 9ROWDJH RI D 0DUN 3XOVH 9 3HDN 9ROWDJH RI D 6SDFH 1R 3XOVH 9 1RPLQDO 3XOVH :LGWK QV 5DWLR RI WKH $PSOLWXGHV RI 3RVLWLYH DQG 1HJDWLYH 3XOVHV DW WKH &HQWHU RI D 3XOVH : UHVLVWLYH ± 9 WR ,QWHUYDO 5DWLR RI WKH :LGWKV RI 3RVLWLYH DQG 1HJDWLYH 3XOVHV DW WKH 1RPLQDO +DOI $PSOLWXGH T able6. E3 Pulse Specifications 5HY WR Figure 6 XRT7298 W5 W) 7&/. W7+2 W768 73'$7$ 25 71'$7$ W7'< 77,3 25 75,1* W5 W) 5&/. W5+2 W568 53'$7$ 25 51'$7$ W) W5 5&/.2 W5'< 532651(* Figure 7. T iming Diagrams for System Interface 5HY XRT7298 9 9 53'$7$ 51'$7$ V 5326 51(* %39 %39 %39 1RW &RGLQJ &RUUHVSRQGLQJ &RUUHVSRQGLQJ (UURU 7R &RGLQJ 5XOH 7R &RGLQJ 5XOH Note: The delayfromRPDAT A/RNDAT A to RPOS/RNEG/RNRZ is notshown here. Figure 8. Bipolar Violation Example for B3ZS Mode 5HY XRT7298 9&& OUTPUTS RECEIVER MONITOR 5/26 5 , ( & 4 7 % 6 6: ',3 5/2/ 73 & /267+5 5(4% ,&7 5&/. 51'$7$ 53'$7$ 5/2/ 5/26 5,1 5 (;7(51$/ &/2&. % P) 70& (;&/. *1'$ *1'& & P) *1'' /3) 9 ' ' $ 9 ' ' & %7 )(55,7( %($' & P) U2 XRT7298 5 5 5 5 3 % 7&/. 6 //223 5/223 7( 7$26 7;/(9 ,&7 (1&2',6 '(&2',6 7 % 6: ',3 5&/.2 5326 7&/. 51(* 3//287 5&/.2 5326 51(* RECEIVER OUTPUTS 3//287 % 71'$7$ 71'$7$ 75,1* % & 73'$7$ 77,3 05,1* 07,3 *1'' '02 %39 9&& 5; ( P) TRANSMITER MONITOR OUTPUTS 5 '02 *1'$ %39 9 ' ' $ 9 ' ' ' %7 5 5 & )(55,7( %($' P) )(55,7( %($' )$,5 5,7( Figure 9. Evaluation System Schematic 5HY 77,3 73'$7$ P) 3 & P) *1' 9 ' ' ' //223 5/223 '6676( 5&/. 7$26 ,&7 51'$7$ 7;/(9 53'$7$ (1&2',6 '(&2',6 5 /3) 5 . 70& 5 5 . 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