CS61535A Datasheet, PDF (1/48 Pages) Cirrus Logic – T1/E1 LINE INTERFACE

CS61535A
T1/E1 Line Interface
Features
• Provides Analog PCM Line Interface
for T1 and E1 Applications
• Provides Line Driver, and Data and
Clock Recovery Functions
• Transmit Side Jitter Attenuation
Starting at 6 Hz, with > 300 UI of Jitter
Tolerance
• Low Power Consumption
(typically 175 mW)
• ^{B8ZS/HDB3/AMI Encoders/Decoders}
• ^{14 dB of Transmitter Return Loss}
• ^{Compatible with SONET, M13 , CCITT}
G.742, and Other Asynchronous
Muxes
General Description
The CS61535A 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 device features a transmitter jitter attenuator mak-
ing it ideal for use in asynchronous multiplexor systems
with gapped transmit clocks. The CS61535A provides a
matched, constant impedance output stage to insure
signal quality on mismatched, poorly terminated lines.
Both ICs use a digital Delay-Locked-Loop clock and
data recovery circuit which is continuously calibrated
from a crystal reference to provide excellent stability
and jitter tolerance.
Applications
• Interfacing network transmission equipment such as
SONET multiplexor and M13 to a DSX-1 cross connect.
• Interfacing customer premises equipment to a CSU.
• Interfacing to E1 links.
Ordering Information
CS61535A-IP1 28 Pin Plastic DIP
CS61535A-IL1 28 Pin PLCC (j-leads)
[ ] = Pin Function in Extended Hardware Mode
(CLKE) (INT) (SDI) (SDO)
( ) = Pin Function in Host Mode
XTALIN XTALOUT MODE TAOS LEN0 LEN1 LEN2 TGND TV+
9
10
5
28 23 24 25
14 15
TCLK
TPOS
[TDATA]
TNEG
[TCODE]
RCLK
RPOS
[RDATA]
RNEG
[BPV]
2
3
4 AMI,
B8ZS,
8 HDB3
CODER
7
6
LOOP
BACK
JITTER
ATTENUATOR
26
27
RLOOP LLOOP
(CS) (SCLK)
CONTROL
PULSE
SHAPER
CLOCK &
DATA
RECOVERY
13 _TTIP
16
LINE DRIVER
LINE RECEIVER
19
TRING
RTIP
20 _RRING
SIGNAL
QUALITY
MONITOR
1
12
21
17 _MTIP
DRIVER
MONITOR
[RCODE]
18 _MRING
[PCS]
11 _DPM
22
[AIS]
ACLKI LOS
RV+ RGND
Crystal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
[phone] FAX: [phone]
Copyright © Crystal Semiconductor Corporation 1996
(All Rights Reserved)
MAY ’96
DS40F2
1