CS62180 Datasheet, PDF (1/50 Pages) Cirrus Logic – T1 FRAMER

CS62180B
T1 Framer
Features
• ^{Monolithic T1 Framing Device}
• ^{CS62180B Supports SF(D4®), T1DM,}
ESF and SLC-96® Framing Formats
• CS62180B Contains Updated AIS and
Carrier Loss Detection Criteria
• CS62180B is Pin Compatible with
DS2180A, and DS2180
General Description
The CS62180B is a monolithic CMOS device
which encodes and decodes T1 framing formats.
The device supports bit-seven and B8ZS zero suppres-
sion, and bit-robbed signaling. Clear channel mode can
be selected on a per channel basis.
The serial interface has been enhanced to allow
the CS62180B to share a chip select signal and
register address space with the CS61535A,
CS61574A, and CS61575 Line Interface Units.
Applications
• T1 Line Cards
• ISDN Primary Rate Line Cards
Ordering Information:
CS62180B-IL 44 Pin PLCC
-40 to 85 °C
TMSYNC TFSYNC TSER TABCD
1
3
2
5
9
TCLK
Transmit Timing
TLCLK
11
10
TLINK
F-Bit Data
Yellow Alarm
7
6
4
CRC
8
Data
Selector
12
Bipolar
Coder ¹³
TSIGSEL
TMO
TCHCLK
TSIGFR
TPOS
TNEG
Transmitter
INT ₁₄
CS ₁₇
SCLK ₁₈
SDI 15
SDO ₁₆
SPS ₁₉
Serial
Interface
RSER _{26 Data}
RABCD _{29 DeMUX}
RLINK ₂₂
RLCLK ₂₃
RSIGFR 30
RSIGSEL ₃₁
Receive
Timing
RCHCLK _{25 28}
27
RMSYNC RFSYNC
Registers
Code Gen.
Receive Sync
Controller
Alarm
Detect
CRC
Synchronizer
21
RYEL RBL (CS2180B-IL only)
40
20 ^VDD
VSS
33
32 ^RST
TEST
Control
39 ^RLOS
37 ^RBV
36 ^RCL
Bipolar ₃₄ RPOS
Decoder ₃₅ RNEG
38
24
Receiver
RFER
RCLK
Cirrus Logic, Inc.
www.cirrus.com
Copyright © Cirrus Logic, Inc 2003
(All Rights Reserved)
DEC '03
DS225PP2
1