V.90 Pci Dsp Modem SolutionThe ESS Technology ES2898 ES2828 TeleDrive
chipset
is a highly integrated solution that brings advanced
modem functionality to notebooks, desktops, and add-in-
cards. The ES2898 ES2828 chipset provides an efficient
56k (V.90) data/fax solution and adds both a telephone
answering machine (TAM) feature and a full-duplex
speakerphone feature.
The data pump algorithms run on the ES2898 DSP along
with the echo cancellation required for implementing a full-
duplex speakerphone feature. The host CPU is utilized to
run the modem controller functions, including the standard
AT command set, V.42bis data compression features,
Classes 1 and 2 fax, and ITU-T V.80 sync access to
support H.324 Video conferencing applications. The
ES2898 DSP offers an integrated PCI bus Interface
The ES2828 is the companion analog-front-end (AFE)
chip to the ES2898. It integrates a low-pass, continuous-
time anti-aliasing Filter a 16-bit resolution ADC a 16-bit
DAC a low-pass output-reconstruction Filter and a CHI
bus Interface to Interface to the ES2898. The ES2828
includes two signal processing channels that operate
synchronously so that data reception at the ADC channel
and data transmission from the DAC channel occur during
the same time interval. The ES2828 also incorporates an
AC-Link to Interface to core Logic chipsets to provide a
standalone MC97 host-based V.90/V.92 modem solution.
The ES2898 DSP is available in an industry-standard 100-
pin low-profile quad flat pack (LQFP) package. The
ES2828 is available in an industry-standard 48-pin low-
profile quad flat pack (LQFP) package. By Unkown
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