AM79C30A Datasheet, PDF (1/101 Pages) Advanced Micro Devices – Digital Subscriber Controller™ (DSC™) Circuit

FINAL
Am79C30A/32A
Digital Subscriber Controller™ (DSC™) Circuit
DISTINCTIVE CHARACTERISTICS
s Combines CCITT I.430 S/T-Interface Transceiver,
D-Channel LAPD Processor, Audio
s Processor (DSC device only), and IOM-2
Interface in a single chip
s Special operating modes allow realization of
CCITT I.430 power-compliant terminal
equipment
s S- or T-Interface Transceiver
— Level 1 Physical Layer Controller
— Supports point-to-point, short and extended
passive bus configurations
— Provides multiframe support
s Certified protocol software support available
s CMOS technology, TTL compatible
s D-channel processing capability
— Flag generation/detection
— CRC generation/checking
— Zero insertion/deletion
— Four 2-byte address detectors
— 32-byte receive and 16-byte transmit FIFOs
BLOCK DIAGRAM
CAP1
CAP2
SBP/IOM-2 Interface
SBIN
SCLK BCL/CH2STRB*
SBIOUT SFS
HSW
AINA
AREF
AINB
EAR1
EAR2
LS1
LS2
XTAL1
XTAL2
MCLK
CS
WR
RD
Main Audio
Processor (MAP)
(Am79C30A
Only)
Ba
Oscillator
(OSC)
Peripheral Port
(PP)
Bd Be Bf
B1
B-channel Multiplexer
(MUX)
B2
Bb
Bc
Microprocessor Interface
(MUX)
S/T Line
Interface Unit
(LIU)
D
Channel
LOUT1
LOUT2
LIN1
LIN2
D-Channel Data
Link Controller
(DLC)
D
Channel
RESET
D7 D6 D5 D4 D3 D2 D1 D0 INT A2 A1 A0
Microprocessor Interface
09893H-1
This document contains information on a product under development at Advanced Micro Devices. The information
is intended to help you evaluate this product. AMD reserves the right to change or discontinue work on this proposed
product without notice.
Publication# 09893 Rev: H Amendment/0
Issue Date: December 1998