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AUICH(4) NetBSD Kernel Interfaces Manual AUICH(4)
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Maintained for NetBSD
by Kimmo Suominen.
Based on man-cgi by Panagiotis Christias.
auich -- Intel I/O Controller Hub integrated AC'97 audio device driver
auich* at pci? dev ? function ?
audio* at audiobus?
The auich device driver supports the integrated AC'97 audio controller of
the Intel I/O Controller Hub. Supported chipsets include the i82801AA
(ICH), i82801AB (ICH0), i82801BA (ICH2), i82440MX, i82801CA (ICH3),
i82801DB (ICH4), i82801EB (ICH5), i82801FB (ICH6), i82801GB/GR (ICH7),
and Intel 6300ESB. The driver also supports SiS 7012, nForce MCP,
nForce2 MCP-T, nForce3 MCP-T, nForce3 250 MCP-T, nForce4, and AMD 8111.
The driver provides the following sysctl(8) read/write variable (when
hardware support is available):
Link rate of the device in Hz. The driver automatically measures
and calculates the correct rate so you usually don't need to
change this. There is, however, a chance that the driver miscal-
culates the rate especially on an emulated hardware, resulting in
an incorrect playback pitch. When this happens you need to manu-
ally set this variable to the correct value. Try 48000 if you
don't know the correct value as it is the default link rate.
ac97(4), audio(4), pci(4), sysctl(8)
The auich device driver appeared in NetBSD 1.6.
The `microphone' input DMA channel is not currently supported.
NetBSD 9.2 October 13, 2016 NetBSD 9.2