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Man Pages
SND_AI2S(4) FreeBSD Kernel Interfaces Manual SND_AI2S(4)

snd_ai2s
Apple I2S audio device driver

To compile this driver into the kernel, place the following lines in your kernel configuration file:
device sound
device snd_ai2s

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

snd_ai2s_load="YES"

The snd_ai2s driver provides support for the Apple I2S audio controllers found predominantly in G4 and G5 machines, along with the snapper and tumbler codecs. Some machines (e.g. the Mac Mini) do not have configurable codecs and so lack hardware volume control.

Chips supported by the snd_ai2s driver include:

  • Apple Tumbler Audio
  • Apple Snapper Audio

snd_davbus(4), sound(4)

The snd_ai2s device driver appeared in NetBSD 2.0 and then in FreeBSD 8.0.

The snd_ai2s driver was written by Tsubai Masanari <tsubai@netbsd.org>, and ported to FreeBSD by Marco Trillo <marcotrillo@gmail.com>.

Recording and operation with non-44.1 Khz audio are not currently supported.
January 20, 2009 FreeBSD 13.1-RELEASE

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