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CS61577 Scheda tecnica(PDF) 1 Page - Cirrus Logic |
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CS61577 Scheda tecnica(HTML) 1 Page - Cirrus Logic |
1 / 30 page • Provides Analog Transmission Line Interface for T1 and E1 Applications • Drop-in Replacement for CS61574 with the Following Enhancements: - Lower Power Consumption - Transmitter Short-Circuit Current Limiting - Greater Transmitter Immunity to Line Reflections - Software Selection Between 75 Ω and 120 Ω E1 Output Options - Internally Controlled E1 Pulse Width - B8ZS/HDB3/AMI Encoder/Decoder The CS61577 is a drop-in replacement for the CS61574, and combines the complete analog transmit and receive line interface for T1 or E1 applications in a low power, 28-pin device operating from a +5V supply. The CS61577 supports processor-based or stand- alone operation and interfaces with industry standard T1 and E1 framers. The receiver uses a digital Delay-Locked-Loop which is continuously calibrated from a crystal reference to pro- vide excellent stability and jitter tolerance. The receiver includes a jitter attenuator optimized for minimum delay in switching and transmission applications. The trans- mitter provides internal pulse shaping to insure compliance with T1 and E1 pulse template specifica- tions. • Interfacing Network Equipment such as DACS and Channel Banks to a DSX-1 Cross Connect • Building Channel Service Units CS61577-IL1Z 28-pin PLCC, Lead Free CS61577-IL1Z 28-pin PLCC MAY ’96 DS155PP2 P. O. Box 17847, Austin, Texas, 78760 (512) 445-7222 FAX:(512) 445-7581 TTIP TCLK 7 RRING RTIP TRING TGND 14 CONTROL LINE RECEIVER LINE DRIVER 15 3 2 6 4 RCLK 8 27 LLOOP (SCLK) 25 24 (INT) LEN0 (SDI) LEN1 (SDO) LEN2 28 23 (CLKE) TAOS 5 MODE TPOS [TDATA] RPOS [RDATA] RNEG [BPV] TNEG [TCODE] MTIP [RCODE] DPM [AIS] LOS 12 21 RV+ 22 RGND 13 19 20 17 11 18 16 MRING [PCS] XTALIN 9 XTALOUT 10 ACLKI 1 ( ) = Pin Function in [ ] = Pin Function in 26 RLOOP (CS) R E M O T E L O O P B A C K AMI, B8ZS, HDB3, CODER JITTER ATTENUATOR PULSE SHAPER CLOCK & DATA RECOVERY SIGNAL QUALITY MONITOR DRIVER MONITOR TV+ L O C A L L O O P B A C K Copyright © Crystal Semiconductor Corporation 1996 (All Rights Reserved) This document contains information for a new product. Crystal Semiconductor reserves the right to modify this product without notice. Preliminary Product Information Copyright ¤ Cirrus Logic, Inc. 200 (All Rights Reserved) http://www.cirrus.com CS61577 T1/E1 Line Interface -8/ ‘0 DS155F |
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