APPLICATIONS
Routers at SOHO, stand-alone modems, PC modems GENERAL DESCRIPTION
The ST70135A can be split up into two different sections. The physical one performs the DMT modulation, demodulation, Reed-Solomon encoding, bit interleaving and 4D trellis coding. The ATM section embodies framing functions for the generic and ATM Transmission Convergence (TC) layers. The generic TC consists of data scrambling 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 OV...
STMicroelectronics
