San Jose, CA - November 30, 2000-- Integrated Silicon Systems (ISS) today announced theimmediate availability of a series of semiconductor IP core solutions for adaptive differential pulse code modulation (ADPCM) speech coding applications.
The CS4100 series of ASVCs (``application-specific virtual components'') provide 16 to 1024 simplex channels of speech compression, delivering a solution for growing markets such as cordless handsets, DECT, voicemail systems, avionics communications and specifically packetized voice systems often referred to as Voice-over-Internet-Protocol (VOIP), the company said. The CS4100 series is compliant with both the ITU G.726 and G.727 standards (including the G.726a and G.727a extensions) and can process either continuous or burst data, an essential requirement in VOIP applications, the company said.
"The CS4100 series of IP cores provides a comprehensive ADPCM offering, designed with real applications in mind. One size doesn't fit all, so ISS offers a wide range of ADPCM solutions using architectures optimized for ASIC and FPGA implementation in small, medium or large systems," remarked Jordan Selburn, director of product marketing, ISS. "It's essential to consider how an APDCM core works on real silicon. For small systems, we have cores optimized for 8 and32 channels. At the other end of the spectrum, the CS4100 cores support large systems with over 2000 channels, but even more significantly, ISS delivers ADPCM products off-the-shelf in both single-port and dual-port memory architectures designed to minimize silicon area and cost."
Each channel is user-configurable for encode or decode operation, data compression format and ADPCM standard. The CS4100 products support A-law, u-law and uniform PCM signals as specified by the G.711 standard and data rates from 16 to 40 kilobits per second, and can operate in either a G.726 or G.727 mode.
Integrated Silicon Systems Ltd.
San Jose, CA
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