1 ." Automatically generated text
2 .TH 7 "August 31, 2006" "OSS" "OSS Devices"
4 oss_cmpci - CMedia CMI8738/8768 audio driver.
7 Open Sound System driver for CMedia Electronics CMI8738/8768 audio
9 CMI87xx device characteristics:
10 o 8/16 bit playback/record
11 o mono/stereo/4ch/5.1ch playback
12 o 8KHz to 48Khz sample rate.
15 The CMedia chip provides some unique features that are set up
16 by the Mixer chip. Running ossxmix will display the CMI8738 mixer
19 Most of the sliders and buttons are self evident. However there
20 are some options that need explaining:
22 Dual Dac: Enabling this button sets the CMPCI device as two
23 separate output devices with /dev/dsp1 audio going to the front and
24 /dev/dsp0 going to the rear outputs. Separate audio streams can
25 be send to the device simultaneously.
27 Speaker Mode: The audio can be sent just to the front speakers or
28 it can be sent simultaneously to all speakers in the "Spread" mode.
30 AC3 passthrough only works on Models 037 and higher. This is because of
31 a hardware bug in the earlier models so check the model number
37 Enable will enable SPDIF output.
40 Rec will allow you to record from the SPDIF device. Note that when
41 you have SPDIF recording enabled, you cannot play 4/6 channel audio.
44 Polarity - certain models require you to flip the bit otherwise you
48 IMon - monitor input via SPDIF in.
51 Optical - sets the SPDIF to Optical (TOSLINK) or RCA Jacks interface.
59 /usr/lib/oss/conf/oss_cmpci.conf Device configuration file