CMI8788_17 Datasheet, PDF (1/25 Pages) C&K Components – High Performance PCI Audio Processor

Oxygen^TMHD CMI8788
High Performance PCI Audio Processor
DESCRIPTION
The CMI8788 is compatible with all the popular
codecs, from I2S codecs with over 120dB quality to
the usual AC97 codecs. This ability gives customers
the flexibility to design their products exactly the
way they want them. The I2S, AC-Link, 2-wire
master bus, and SPI interfaces are used to transfer
audio data and control data between the CMI8788
and codecs. To facilitate the connection with
existing home audio electronics, the CMI8788 has
incorporated the S/PDIF transmitter and receiver
with 192k sampling rate. An EEPROM interface is
built for the CMI8788 in connection with the
EEPROM to store and retrieve the non-evaporable
data for customer applications, such as board
configuration, sub-vendor and sub-system IDs of
the PCI configuration, or any dynamic data that
customers want to restore at the next power-on.
BLOCK DIAGRAM
FEATURES
 PCI 2.2 interface with bus mastering and burst
modes
 Only one 24.576MHz oscillator is needed
 4 synchronous I2S output data stream pairs
within 1 flexible output DMA
 Programmable channel routing mechanism
among the 4 I2S output pairs
 4 synchronous I2S input data stream pairs spread
in 3 input DMA’s (for Dolby pro-audio
applications)
 DTS® Interactive – a real-time 5.1 channel
encoder that takes 2 or more channels and
encodes them into a DTS bit stream.
 DTS® NeoPC - an up-mix matrix that turns any 2
channel audio into 7.1 channel surround sound
 Dolby® Digital Live (AC-3) real-time 5.1 channel
encoding bit-stream to facilitate the connection
with CE AV receiver
www.cmedia.com.tw
Copyright © C-Media Electronics Inc.
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