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CMPCI(4)		  OpenBSD Programmer's Manual		      CMPCI(4)

NAME
     cmpci - C-Media CMI8338/CMI8738/CMI8768 PCI audio device

SYNOPSIS
     cmpci* at pci?
     audio* at cmpci?

DESCRIPTION
     The cmpci driver supports the C-Media CMI8338A, CMI8338B, CMI8738,
     CMI8738B and CMI8768 sound chips present in some PCI sound cards and some
     integrated PC motherboard chipsets (such as the SiS 530).

     Hardware features:

	   o   Supports 8 common sample rates from 5512 Hz to 48000 Hz

	   o   Hardware full-duplex support enables simultaneous record and
	       playback

	   o   Some CMI8738 versions support 4 and 6 channel playback

	   o   CMI8768 chips support 4, 6, and 8 channel playback

	   o   CMI8768 chips can only record sample rates of 44100 Hz or 48000
	       Hz

	   o   Hardware copying of front to rear for playing stereo input on 4
	       speakers

	   o   S/PDIF input and output

SEE ALSO
     audio(4), intro(4), pci(4)

HISTORY
     The cmpci device driver appeared in OpenBSD 2.7.

BUGS
     The Joystick port is not supported.

OpenBSD 4.9			 July 31, 2010			   OpenBSD 4.9

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