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Siemens - High-Level Serial Communications Controller

Numéro de référence SAB82520
Description High-Level Serial Communications Controller
Fabricant Siemens 
Logo Siemens 





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SAB82520 fiche technique
High-Level Serial
Communications Controller (HSCC)
1 Features
Two independent HDLC channels
Implementation of X.25 LAPB/LAPD protocol
Programmable timeout and retry conditions
FIFO buffers for efficient transfer of data packets
Digital phase-locked loop for each channel
Baudrate generator and oscillator
Different modes for clock recovery and data encoding
High-speed data rate (up to 4 MHz)
Supports bus configuration by collision resolution
Telecom-specific features programmable
8-bit parallel µP interface
Advanced CMOS technology
Low power consumption; active: 25 mW at 4 MHz
standby: 3 mW
SAB 82520: operating temperature 0 to 70 ˚C
SAF 82520: operating temperature – 40 to 85 ˚C
P-LCC-28-R
SAB 82520
SAF 82520
P-DIP-28
SAB 82520, a High-level Serial Communications Controller (HSCC), has been designed to
free the user from tasks occurring in communication via networks and trunk lines.
SAB 82520 is an X.25 LAPB/LAPD controller which, to a large degree performs
communications procedures independently of CPU support.
A parallel processor bus constitutes the µC system. The communications interface is
implemented by two full-duplex HDLC channels, which can be operated independently from
one another. The HSCC is connected to the transmission line via additional line drivers or
modems. External logic is cost-effective because clock recovery can be performed by an on-
chip oscillator, DPLL circuits and a programmable baudrate generator.
Type
SAB 82520-N
SAB 82520-P
SAF 82520-N
SAF 82520-P
Ordering Code
Q67100-H8400
Q67100-H8014
Q67100-H8610
Q67100-H8512
Package
P-LCC-28 (SMD)
P-DIP-28
P-LCC-28 (SMD)
P-DIP-28
Semiconductor Group
5
03.94

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