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AC'97

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AC'97

(Audio Codec'97) A specification for building audio and modem functions on a PC motherboard. Introduced in 1996 by Intel, AC'97 provides 20-bit, 48 kHz audio with six channels (5.1). It supports one audio stream per system and a two element array microphone.

Controller and Codec
AC'97 is made up of a controller connected to analog/digital codecs by a 5-wire TDM interface called "AC Link." The two subsystems separate the digital controller, which is built into the PC chipset, from the analog circuits, which can be in a chip on the motherboard, a riser card or cabled close to the I/O connectors.

For international certification (homologation), modem codecs are often placed on riser cards, which can be easily interchanged. See HD Audio and riser card.



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SmartAMC combines industry standard AC'97 audio with V.
CONEXANT: INDUSTRY'S FIRST GLOBAL AUDIO/MODEM SOLUTION by EDP Weekly's IT Monitor
Integrated audio features include SPI, I2S and AC'97 with six-channel 24-bit audio, and it also supports a wide array of software codecs including MP3, WMA and AAC.
Cirrus Logic Consumer Network Attached Storage Reference Design ... by Business Wire
Silicon DAA products currently available for evaluation include versions with AC'97 and HD audio codec interfaces.
Integration Announces Silicon DAA Technology for Modem and VoIP ... by Business Wire
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