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AUDIOCE(4) Device Drivers Manual (sparc64) AUDIOCE(4)

audioce
SPARC64 EBus CS4231 audio device

audioce* at ebus?
audio* at audioce?

The audioce device uses the Crystal Semiconductor CS4231A Parallel Interface, Multimedia Audio Codec chip to implement the audio device interface described in audio(4). This device is found onboard on some PCI/EBus based sparc64 models.
The audioce has a maximum precision of 16 bits and has both stereo and monoaural outputs.

The mixer(4) interface for audioce provides the following controls:
 
 
Specifies the attenuation of DAC output. A value of ‘255’ represents 0 dB attenuation.
 
 
Specifies whether DAC output is muted.
 
 
Specifies the set of enabled output ports. The output ports are: ‘line’, the line output jack, ‘hp’, the low impedance headphone jack, and ‘spkr’, the internal speaker. Note: Not all systems support disabling the headphone and line output ports.
 
 
Specifies the gain applied to CD audio input. A value of ‘191’ represents 0 dB.
 
 
Specifies whether CD audio input is muted.
 
 
Specifies the gain applied to line input. A value of ‘191’ represents 0 dB.
 
 
Specifies whether line input is muted.
 
 
Specifies the attenuation of ADC to DAC output. A value of ‘255’ represents 0 dB.
 
 
Specifies whether ADC to DAC output is muted.
 
 
Specifies ADC input gain. A value of ‘0’ represents 0 dB.
 
 
Specifies the active input port for the ADC. The following are valid ADC input ports: ‘line’, line input, ‘cd’, CD input, ‘mic’, microphone input, and ‘mixerout’, post-mixer output as heard on the output ports.
 
 
Specifies whether an additional +20 dB gain is applied to the ADC's microphone input.

ioctl(2), audio(4), ebus(4), intro(4)

OpenBSD support for audioce first appeared in OpenBSD 3.0.
July 26, 2010 OpenBSD-current