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Speech
Coders and
Other
Silicon Intellectual
Property
For companies seeking to enter the DECT market, the following
companies offer intellectual property suitable for embodiment as ASICs and FPGAs
Adelante Technologies
(formed from Frontier Design & Philips
Semiconductors DSP)
Company website
Adelante was fomed from the merger of Frontier Design and the DSP activities of
Philips Semicondcutors in June 2001.
Frontier Design has a portfolio of semiconductor IP / ASIC offering relevant to DECT:
* LU7 compliant Reed Solomon codec for data over dect applications (Verilog/VHDL)
* ADPCM codec in HDL (verilog/vhdl)
* Speech recognition
* Voice dailing ASIC suitable to allow DECT manufacterers to add voice dialling to a DECT
handset.
* Voice dailing solution running on the embedded processor in a DECT phone - currently
they support the National Semiconductor "Compact RISC CR16b" processor.
Amphion (formerly Integrated Silicon Systems)
“Virtual
Components for
the Converging
World”™
Company website
Amphion
is the leading
supplier of
application-specific
semiconductor IP
cores for SoC,
ASIC and FPGA
for wireless and
broadband
communications
applications,
including high
performance
kilo-channel
speech coder
solutions for
toll-quality
voice telephony
compression.
Amphion’s
range of
standard product
IP cores for
DECT and
telecommunications
applications
includes ITU
compliant ADPCM
Codecs for ASIC,
Xilinx Virtex
& Spartan
series FPGA, and
Altera APEX 20K
& ACEX
series SRAM PLDs.
Amphion is a
full member of
the European
Telecommunications
Standards
Institute
(ETSI)
Amphion CS4100
series ADPCM
Codecs
A range of 8- to
2048-ch ADPCM
Codec IP core
solutions for
ASIC and FPGA
CS4110
8-channel duplex
CS4120
32-channel duplex
CS4125
64-channel duplex
CS4130
128-channel duplex (ASIC only)
CS4180
up to 1024-ch-simplex
(for Xilinx
Virtex-II with
dual port RAM)
CS4190
up to 2048-ch
simplex (for
ASIC with single
port RAM)
You can download datasheets from their website
Description
The CS4100 series of application-specific IP cores for Adaptive Differential
Pulse Code Modulation (ADPCMs) purposes in high-performance speech compression
and decompression applications. Fully compliant with ITU G.726, G.726a, G.727
and G.727a standards, the CS4100 series supports up to 1024 duplex channels (or
2048 simplex channels): each channel is independently selectable for encoding or
decoding. Handcrafted by Amphion for optimal performance, minimal power
consumption and silicon area. Available in targeted-netlist formats for both
ASIC and programmable logic devices.
Features
G.726, G.726a, G.727 and G.727a compliant
Continuous or burst data processing modes (for VoIP applications)
Applications
DECT
basestation, exchange
Multi-channel call recording/logging
For more information on these and other application-specific IP cores for Speech
Coding e-mail info@amphion.com
SiRES
LABS
Company
Website
A fabless IC design company, based in Malaysia,
specialized in mixed-signal IC design. ASIC design, full custom, semi-custom,
standard cell based, systems on a chip SOC), hard and soft IP transfers,
digital, analog and mixed signal, RF capabilities. SiRES offer cost effective IC
Design as well as IP development services in CMOS technology.
Samples of hard IP transfer work include 1394, RSA, Sigma-Delta Modulator,
Neural-net engines, fibre optic preamplifier, etc
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