ADPCM, 64 Channel Duplex

"The ADPCM-LCO is a unique realization of the G.726 algorithm that is optimized for a very small gate count in processing up to 64 full duplex digital voice channels. The product supports the ADPCM standard for digital voice compression as defined in the ITU-T G.726 and G.727 specifications. The true benefit of using the core is to significantly reduce transport or storage bandwidth requirements. The core is designed to offload the internal voice processing tasks from RISC or DSP centric architectures.

Device Family Support
# Virtex-5 LXT
# Virtex-5 LX
# Virtex-5 SXT
# Virtex-4 FX
# Virtex-4 LX
# Virtex-4 SX
# Spartan-3E

Key Features
# Implements ITU-T G.726 and G.727 specifications
# A-law, m-law, Linear code format selection on a per channel basis
# Processes 1 to 64 full duplex, 128 half duplex voice channels
# Single channel ‘burst’ processing mode (auto detected with channel address inputs)
# Channel by channel, frame by frame encode/decode, and code format
# Two cycle encoding/decoding of voice samples
# Auto-sequential channel processing, random or addressed channel operation"