Description T7689 fully integrated quad line interface containing

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T7689 Quad Line Interface
Description
T7689 fully integrated quad line interface containing four transmit receive channels North American (T1/DS1) applications. device many same functions Lucent Technologies Microelectronics Group T7290A provides additional flexibility system designer. Included parallel microprocessor interface that allows user define architecture, initiate loopbacks, monitor alarms. interface compatible with many commercially available microprocessors. receiver performs clock data recovery using fully integrated digital phase-locked loop. This digital implementation prevents false-lock conditions that common when recovering sparse data patterns with analog phase-locked loops. Equalization circuitry receiver guarantees high level interference immunity. option, sliced data retiming) output receive data pins. Transmit equalization implemented with lowimpedance output drivers that provide shaped waveforms transformer, guaranteeing template conformance. quad device will interface digital cross connect (DSX) lengths operation. selectable jitter attenuator placed receive signal path low-bandwidth linesynchronous applications, placed transmit path multiplexer applications where signals demultiplexed from higher rate signals. jitter attenuator will perform clock smoothing required resulting demultiplexed gapped clock.
Four fully integrated line interfaces Includes driver, receiver, equalization, clock recovery, jitter attenuation functions Ultralow power consumption Robust operation increased system margin High interference immunity On-chip transmit equalization improved sensitivity Low-impedance drivers reduced power consumption Selectable transmit receive, jitter attenuation/ clock smoothing 3-state transmit drivers High-speed, microprocessor interface Automatic transmit monitor function Per-channel powerdown systems that compliant with AT&T CB119; TR-TSY-000170, TR-TSY-000009, TRTSY-000499, TR-TSY-000253; ANSI T1.102 T1.403 Common transformer transmit/receive Fine-pitch spacing) surface-mount package, 100-pin bumpered quad flat pack operating temperature range
Applications
SONET/SDH multiplexers Asynchronous multiplexers (M13) Digital access cross connects (DACs) Channel banks Digital radio base stations, remote wireless modules interfaces
T7689 Quad Line Interface
Block Diagram
T7689 block diagram shown Figure illustration purposes, only four on-chip line interfaces shown. names that apply four channels followed designation [1-4].
ALOS
DLOS DECODER* RPD/RDATA[1-4] RND/BPV[1-4] RCLK/ALOS[1-4]
RTIP[1-4] RRING[1-4] FLLOOP BLUE SIGNAL) LINE INTERFACE
EQUALIZER
SLICERS
CLOCK/DATA RECOVERY*
JITTER ATTENUATOR* (TRANSMIT RECEIVE PATH)
FLLOOP (DURING BLUE SIGNAL)
XCLK XCLK DLLOOP SYSTEM INTERFACE
LOTC PULSEWIDTH CONTROLLER XCLK
TTIP[1-4] DRIVERS TRING[1-4]
PULSE EQUALIZER
JITTER ATTENUATOR* (TRANSMIT RECEIVE PATH)
RLOOP TCLK[1-4] TPD/TDATA[1-4] TND[1-4] A[3:0] AD[7:0] RDY_DTACK WR_DS RD_R/W ALE_AS MPMUX MPMODE MPCLK
ENCODER*
BLUE SIGNAL (AIS) LOXC MICROPROCESSOR INTERFACE XCLK LOXC BCLK
5-3683(C)r.7
Function bypassed using microprocessor interface.
Figure T7689 Block Diagram (Single Channel)
additional information, contact your Microelectronics Group Account Manager following: http://www.lucent.com/micro INTERNET: E-MAIL: docmaster@micro.lucent.com AMERICA: Microelectronics Group, Lucent Technologies Inc., Union Boulevard, Room 30L-15P-BA, Allentown, 18103 1-800-372-2447, 610-712-4106 CANADA: 1-800-553-2448, 610-712-4106) ASIA PACIFIC: Microelectronics Group, Lucent Technologies Singapore Pte. Ltd., Science Park Drive, #03-18 Cintech III, Singapore 118256 Tel. (65) 8833, (65) 7495 CHINA: Microelectronics Group, Lucent Technologies (China) Co., Ltd., A-F2, 23/F, Fong Universe Building, 1800 Zhong Shan Road, Shanghai 200233 China Tel. (86) 6440 0468, ext. 316, (86) 6440 0652 JAPAN: Microelectronics Group, Lucent Technologies Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, Tokyo 141, Japan Tel. (81) 5421 1600, (81) 5421 1700 EUROPE: Data Requests: MICROELECTRONICS GROUP DATALINE: Tel. (44) 1189 299, (44) 1189 Technical Inquiries: GERMANY: (49) 95086 (Munich), UNITED KINGDOM: (44) 1344 (Bracknell), FRANCE: (33) (Paris), SWEDEN: (46) 7070 (Stockholm), FINLAND: (358) 4354 2800 (Helsinki), ITALY: (39) 6608131 (Milan), SPAIN: (34) 1441 (Madrid)
Lucent Technologies Inc. reserves right make changes product(s) information contained herein without notice. liability assumed result their application. rights under patent accompany sale such product(s) information. registered trademark Lucent Technologies Inc.
Copyright 1998 Lucent Technologies Inc. Rights Reserved Printed U.S.A.
1998 PN98-135TIC (Replaces PN97-026TIC)

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