CDB61574 Cirrus Logic, Inc., CDB61574 Datasheet
CDB61574
Manufacturer Part Number
CDB61574
Description
T1/e1 LINE Interface
Manufacturer
Cirrus Logic, Inc.
Datasheet
1.CDB61574.pdf
(44 pages)
Features
[TCODE]
Preliminary Product Information
Crystal Semiconductor Corporation
P. O. Box 17847, Austin, Texas, 78760
(512) 445-7222 FAX:(512) 445-7581
[RDATA]
[TDATA]
RNEG
RPOS
TNEG
TPOS
RCLK
TCLK
[BPV]
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
120
Internally Controlled E1 Pulse Width
B8ZS/HDB3/AMI Encoder/Decoder
2
3
4
8
7
6
( ) = Pin Function in Host Mode
[ ] = Pin Function in Extended Hardware Mode
CODER
HDB3,
E1 Output Options
B8ZS,
AMI,
RLOOP
(CS)
26
R
M
O
O
O
C
E
T
E
L
P
B
A
K
XTALIN
9
ATTENUATOR
XTALOUT
T1/E1 Line Interface
JITTER
10
This document contains information for a new product. Crystal
Semiconductor reserves the right to modify this product without notice.
ACLKI
1
Copyright
and
O
C
O
O
C
L
A
L
L
P
B
A
K
LLOOP
(SCLK)
MODE
General Description
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.
Applications
ORDERING INFORMATION
CS61577-IP1
CS61577-IL1
5
27
CONTROL
Crystal Semiconductor Corporation 1996
Interfacing Network Equipment such as DACS and
Channel Banks to a DSX-1 Cross Connect
Building Channel Service Units
(CLKE)
(All Rights Reserved)
TAOS
12
LOS
RECOVERY
28
MONITOR
QUALITY
CLOCK &
SIGNAL
DATA
LEN0
(INT)
21
RV+
23
SHAPER
PULSE
LEN1
(SDI)
28 Pin Plastic DIP
28 Pin Plastic PLCC
24
22
RGND
(SDO)
LEN2
LINE RECEIVER
25
LINE DRIVER
MONITOR
DRIVER
TGND
CS61577
14
TV+
15
13
16
19
20
17
18
11
DS155PP2
MAY ’96
TTIP
TRING
RTIP
RRING
MTIP
[RCODE]
MRING
[PCS]
DPM
[AIS]
1
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