ADPCM, 128 Simplex

"The Amphion family of adaptive differential pulse code modulators (ADPCMs) is designed to provide high performance solutions for a broad range of applications requiring speech compression and decompression. These application specific virtual components (ASVCs) support up to 128 simplex channels on Xilinx FPGA. Each channel is independently selectable for encoding or decoding, and are fully compliant with ITU G.726, G.726a, G.727 and G.727a standards. The core supports 128 simplex channels. The core is online configurable in terms of compression rates. It has been tested and verified to be fully compliant using the ITU standard test vectors.

Device Family Support
# Virtex-II Pro
# Virtex-II
# Spartan-3
# Spartan-IIE

Key Features
# Supports, G.721, G.723, G.726, G.726a, G.727, and G.727a ITU standards
# 128 channel simplex/64 duplex encoding and decoding
# Online configurable for different compression rates, m-law and A-law for each encoding or decoding channel
# Coding (encode or decode) for one data sample in 16 clock cycles (min)
# Can work in both burst and continuous modes
# Conforms fully to ITU test vectors"