CS61535A-IL1Z 查看數據表（PDF） - Cirrus Logic

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CS61535A-IL1Z

T1/E1 Line Interface

Cirrus Logic 

-XO ¶

&21),'(17,$/

CS61535A

WHU WKH IDO OLQJ HGJ H RI 7 &/. 7 KH &6 UH

TXLUHV  QV RI KR OG WL PH RQ 7 326 DQ G 7 1(*

DIWHU W KH ID OOLQJ H GJH RI 7 &/ D QG  QV RI V HWXS

WLPH

 / 26 RF FXUV DIWH U  FRQ VHFXWLYH ]HURV RQ WK H

&6 )RU W KH & 6$ / 26 RF FXUV DIW HU

 ]HURV

 6L QFH WKH &6 $ UHFH LYHUV D UH FR QWLQX

RXVO\ FDO LEUDWHG WK HUH LV QR QH HG WR LVVXH D UHVHW

WR LQL WLDOL]H WK H U HFHLYHU W LPLQJ D V Z LWK W KH

&6

Using the CS61535A for SONET

7KH &6$ FDQ EH DSSOLHG WR 621( 7 97

DQG 97  LQ WHUIDFH F LUFXLWV DV V KRZQ LQ )L J

XUH $ 7KH 621(7 GDWD UDWH LV  0+] DQG

KDV  E LWV S HU IUD PH   XV SH U IUD PH $Q

LQGLYLGXDO 7 IUDPH  ELWV SHU IUDPH RU 3&0

 IUDPH  ELWV SHU IUDPH KDV LWV GDWD PDSSHG

LQWR WKH  E LW 6 21(7 IU DPH 7 KH P DSSLQJ

GRHV QR W U HVXOW LQ D XQ LIRUP V SDFLQJ EHW ZHHQ

VXFHVVLYH 7  RU (  ELWV 5DWKHU IRU ORFNHG 97

DSSOLFDWLRQV JDSV DV ODUJH DV  7 ELW SHULRGV RU

 (  EL W SH ULRGV FD Q H[L VW EHWZHHQ V XFFHVVLYH

ELWV : LWK IO RDWLQJ 97 V WKH JDS V F DQ E H HYHQ

ODUJHU

7KH FL UFXLW L Q ) LJXUH $ HOL PLQDWHV WKH GHP XOWL

SOH[LQJ MLWWHU LQ D WZ RVWHS DSS URDFK 7KH I LUVW

VWHS XV HV D ) ,)2 ZK LFK LV ILOOHG DW D  0+]

UDWH ZKHQ 7 RU ( ELWV DUH SUHVHQW DQG ZKLFK

LV HPSWLHG DW D VXEPXOWLSOH RI WKH  UDWH 7KH

),)2 LV H PSWLHG R QO\ ZKHQ LW F RQWDLQV G DWD

:KHQ WK H ),)2 LV HPSW \ WK H RXW SXW FORFN LV QRW

SXOVHG

7KH V XEPXOWLSOH UD WH FKRVHQ VKRXOG E H V OLJKWO\

IDVWHU WKDQ WKH WDUJHW UDWH  RU  0+]

EXW DV FORVH WR WKH WDU JHW U DWH DV SRV VLEOH ) RU

51.84 MHz

Div By

6480 to

193 bit

(or 256 bit)

Mapping

Circuit

TCLK1

TSER

RSER

RCLK1

Empty

Write

FIFO Clock

TSER

FIFO

RSER

RCLK2

CS62180B

TCLK2

TPOS

TNEG

RPOS

RNEG

RCLK2

Jitter

Attenuator

Driver

CS61535A

Receiver

Figure A5. SONET Application

32

DS40F3

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