User manual

RC200/203 Manual
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Parameters:
SampleRateCode: A code selecting the sampling rate.
Possible values:
Sample rate code Sample rate (Hz)
RC200AudioSampleRate8000
8000
RC200AudioSampleRate11025
11025
RC200AudioSampleRate16000
16000
RC200AudioSampleRate22050
22050
RC200AudioSampleRate32000
32000
RC200AudioSampleRate44100
44100
RC200AudioSampleRate48000
48000 (default)
Timing: 1 clock cycle.
Description: Changes the sample rate of the audio input.
5.13.6 Reading from the audio interface
extern macro proc RC200AudioInRead (LeftPtr, RightPtr);
Parameters: LeftPtr: Pointer to an lvalue of type signed 18.
RightPtr: Pointer to an lvalue of type signed 18.
Timing: 1 or more clock cycles (blocks until data is ready).
Description:
Reads a single stereo sample from the audio interface and
stores it in the
lvalue pointed at by DataPtr. The macro
blocks until a new sample can be read.
5.13.7 Setting the output volume
extern macro proc RC200AudioOutSetVolume (Mute, LeftVol, RightVol);
Parameters: Mute: Data value of type unsigned 1.
LeftVol: Data value of type unsigned 5.
RightVol: Data value of type unsigned 5.
Timing: 1 or more clock cycles.
Description:
LeftVol and RightVol set the gain level of the DAC output
amplifiers, from 0dB to -46.5dB in -1.5dB steps.
Mute is a
boolean where "1" = muted.