AC'97 | Article about AC'97 by The Free Dictionary
Also found in: Dictionary
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'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
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.