Protocol decoder:ac97

ac97

Name	AC'97
Description	Data from AC'97 digital controller to AC'97 analog codec.
Status	In progress
License	GPLv2+
Source code	decoders/ac97
Input	logic
Output	ac97
Probes	sync, clk, sdo, sdi
Optional probes	—
Options	—

The ac97 protocol decoder (a.k.a. RS-232) can decode the AC'97 signal between the digital controller and the audio or modem codec (which contains the audio output / analog components of the architecture).

AC'97 defines a high-quality, 16- or 20-bit audio architecture with 5.1 surround sound support for the PC. AC'97 supports a 96 kHz sampling rate at 20-bit stereo resolution and a 48 kHz sampling rate at 20-bit stereo resolution for multichannel recording and playback.

Status

Bits are annotated with the correct bit number. Slots are correctly annotated.

See https://github.com/mithro/libsigrokdecode/tree/master/decoders/ac97

Hardware

FIXME

Protocol

FIXME

Resources

• http://www.tij.co.jp/jp/lit/ds/symlink/lm4550b.pdf
• http://www-mtl.mit.edu/Courses/6.111/labkit/audio.shtml
• http://www-inst.eecs.berkeley.edu/~cs150/Documents/ac97_r23.pdf