cmpci man page on NetBSD
[printable version]
CMPCI(4) BSD Kernel Interfaces Manual CMPCI(4)
NAME
cmpci — C-Media CMI8x38 audio device driver
SYNOPSIS
cmpci* at pci? dev ? function ?
audio* at audiobus?
mpu* at cmpci?
opl* at cmpci? flags 1
DESCRIPTION
The cmpci device driver supports C-Media CMI8x38 based sound cards.
The device has SPDIF input/output interfaces, 16bit CODEC with analog
mixer, OPL3 FM Synthesizer, and MPU401 compatible MIDI I/O port inter‐
face.
MIXER DEVICE
The mixer device of cmpci driver can be accessed via mixerctl(1) command.
The complex structure is analyzed as follows.
SPDIF in ----------------------
#1(coax)->|spdin1 | R -----------------------
#2(opt)-->|spdin2 spdif.input |--*->--|spdin spdif.output |--> SPDIF
-->|spdout | | -->|playback | output
| ---------------------- | | -----------------------
--------------------<------+-*
---------<-------------------+-+----------------------------------
| ------------------------ | | ----------------------- |
-->|legacy spdif.output. |--+-*-->|spdout | |
-->|wave playback | ----->|spdin spdif.monitor |---- |
| ------------------------ NC-|off | | |
---------<-- spdif ----------------------- | |
-------+------- dac ------------ ----------------- v |
wave -->|playback.mode|---->|inputs.dac|-*->|inputs.dac.mute|->----- |
playback --------------- ------------ R ----------------- | + | |
----------------- --------------------- |mix| |
FM synthesizer -->|inputs.fmsynth |--*->|inputs.fmsynth.mute|-->----- |
----------------- R --------------------- *->--
CD ---------------------- --------------------------- v
LINE-IN ->|inputs.{cd,line,aux}|-*>|inputs.{cd,line,aux}.mute|->-----
AUX ---------------------- R --------------------------- | |
------------------ | |
PC-SPK -->| inputs.speaker |----------------------------------->| + |
------------------ | |
------------------- ------------ ----------------- |mix|
MIC --*-->|inputs.mic.preamp|->|inputs.mic|->|inputs.mic.mute|->| |
| ------------------- ------------ ----------------- -----
| ------------ ----------------- |
--->|record.mic|-->| | v
------------ | record.source |-->to -----------
*R-->| (select, mix) | recording |outputs.*|-->
----------------- ----------- SPK
(front)
Note the 2nd SPDIF input exists only on CMI8738/PCI-6ch versions.
MIXER EXAMPLES
Here are examples about wave playback and SPDIF input/output ports.
Playback to speaker, SPDIF input to SPDIF output
mixerctl -w playback.mode=dac spdif.output=spdin
spdif.monitor=off
Playback to SPDIF output, SPDIF input to speaker
mixerctl -w playback.mode=spdif spdif.output=playback
spdif.output.playback=wave spdif.monitor=spdin
SPDIF input to both SPDIF output and speaker
mixerctl -w spdif.output=spdin spdif.monitor=spdin
Playback to both SPDIF output and speaker
mixerctl -w playback.mode=spdif spdif.output=playback
spdif.output.playback=wave spdif.monitor=spdout
Mix playback and SPDIF input to speaker
mixerctl -w playback.mode=dac spdif.monitor=spdin
SEE ALSO
mixerctl(1), audio(4), midi(4), mpu(4), opl(4), pci(4)
HISTORY
The cmpci device driver appeared in NetBSD 1.5.
BUGS
4ch/6ch playback is not yet available. Joystick port is not supported.
spdif.output.playback=legacy does not seem to work properly.
BSD June 22, 2005 BSD
[top]
_ _ _
| | | | | |
| | | | | |
__ | | __ __ | | __ __ | | __
\ \| |/ / \ \| |/ / \ \| |/ /
\ \ / / \ \ / / \ \ / /
\ / \ / \ /
\_/ \_/ \_/
More information is available in HTML format for server NetBSD
List of man pages available for NetBSD
Copyright (c) for man pages and the logo by the respective OS vendor.
For those who want to learn more, the polarhome community provides shell access and support.
[legal]
[privacy]
[GNU]
[policy]
[cookies]
[netiquette]
[sponsors]
[FAQ]
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
|
Vote for polarhome
|