SAF82520-P - Siemens

SAF82520-P High-Level Serial Communications Controller

In a point-to-multipoint or in a multimaster configuration the HSCC can be used as a central station (master) or a peripheral station. As a peripheral station the HSCC can initiate the transmission of data. An internal function block provides for collision avoidance, which may occur if several stations start the transmitting simultaneously. Furthermore, in a.

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 t.