TMS320TCI648x DSP Viterbi-Decoder Coprocessor 2 (VCP2) User's Guide (Rev. D)

Channel decoding of voice and low bit-rate data channels found in third generation (3G) cellular standards requires decoding of convolutional encoded data. The Viterbi-decoder coprocessor 2 (VCP2) provided in the TCI648x/9x devices has been designed to perform Viterbi decoding for IS2000 and 3GPP wireless standards. The VCP2 coprocessor has been designed to perform forward-error correction for 2G and 3G wireless systems. The VCP2 coprocessor offers a very cost effective and synergistic solution when combined with Texas Instruments (TI) DSPs. The VCP2 supports 762 12.2 Kbps 3G AMR channels when running at 333 MHz. This document describes the operation and programming of the VCP2.