CS61535A
T1/E1 Line Interface
Features
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.
•
Provides Analog PCM Line Interface
for T1 and E1 Applications
Clock Recovery Functions
•
Provides Line Driver, and Data and
•
Transmit Side Jitter Attenuation
•
Low Power Consumption
(typically 175 mW)
Starting at 6 Hz, with > 300 UI of Jitter
Tolerance
Applications
•
•
•
•
B8ZS/HDB3/AMI Encoders/Decoders
•
14 dB of Transmitter Return Loss
•
Compatible with SONET, M13 , CCITT
G.742, and Other Asynchronous
Muxes
[ ] = Pin Function in
Extended Hardware Mode
( ) = Pin Function in
Host Mode
XTALIN XTALOUT
9
TCLK
TPOS
[TDATA]
TNEG
[TCODE]
RCLK
RPOS
[RDATA]
RNEG
[BPV]
2
3
4
8
7
6
LOOP
BACK
AMI,
B8ZS,
HDB3
CODER
10
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
CS61535A-IL1
28 Pin Plastic DIP
28 Pin PLCC (j-leads)
(CLKE) (INT) (SDI) (SDO)
MODE TAOS LEN0 LEN1 LEN2
5
28
23
24
PULSE
SHAPER
25
TGND
14
TV+
15
13
JITTER
ATTENUATOR
CONTROL
16
TTIP
TRING
CLOCK &
DATA
RECOVERY
LINE DRIVER
LINE RECEIVER
19 RTIP
20 RRING
17 MTIP
[RCODE]
18
MRING
[PCS]
11
DPM
[AIS]
SIGNAL
QUALITY
MONITOR
27
1
12
21
22
DRIVER
MONITOR
26
RLOOP LLOOP
(CS) (SCLK)
ACLKI LOS
RV+ RGND
Crystal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
(512) 445-7222 FAX: (512) 445-7581
Copyright
©
Crystal Semiconductor Corporation 1996
(All Rights Reserved)
MAY ’96
DS40F2
1
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