AC'97


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AC'97

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

AC Link
AC'97 comprises 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, in an interchangeable riser card or cabled close to the I/O connectors. For international certification (homologation), modem codecs are often placed on riser cards. See HD Audio and riser card.
References in periodicals archive ?
Through its connection options, the VIA Envy24PT can support pro-motherboard applications when used in combination with an AC'97 codec making possible a single audio implementation for eight, ix, four, and two channel audio solutions.
The Edinburgh-based semiconductor developer Wolfson Microelectronics Ltd has launched what it claims to be the first ever combination of pen input functionality with a portable audio CODEC that conforms to Intel's AC'97 audio standard.
SmartAMC combines industry standard AC'97 audio with V.90/V.92 dial-up modem connectivity, and provides a significantly lower-cost solution by eliminating the need for a separate audio codec.