ST70135A - ST Microelectronics

ST70135A ASCOTTM DMT TRANSCEIVER

The ST70135A is the DMT modem and ATM framer of the STMicroelectronics ASCOT™ chipset. When coupled with ST70134 analog front-end and an external controller running dedicated firmware, the product fulfills ANSI T1.413 ”Issue 2” DMT ADSL specification. The chip supports UTOPIA level 1 and UTOPIA level 2 interface and a non ATM synchronous bit-stream interface.

Features

ambling and Reed Solomon error corrections, with and without interleaving. The ST70135A is controlled and programmed by an external controller (ADSL Transceiver Controller, ATC) that sets the programmable coefficients. The firmware controls the initialization phase and carries out the consequent adaptation operations. s SUPPORTS EITHER ATM (UTOPIA LEVEL s 16 BIT MULTIPLEXED MICROPROCESSOR INTERFACE (LITTLE AND BIG ENDIAN COMPATIBILITY) s ANALOG FRONT END MANAGEMENT s DUAL LATENCY INTERLEAVED PATHS: FAST AND s ATM’S PHY LAYER: CELL PROCESSING (CELL DELINEATION, CELL INSERTION, HEC) s ADSL’S.