3-8
Digitized Sound I/O Programming
DSP Digitized Sound I/O Capability
Because the DSP is periodically enhanced, the capabilities of the DSP particularly
with regard to the sampling rates and DMA operation modes, have varied among the
different versions.
The table below lists the DMA operation modes supported by different versions of
the DSP:
DSP Version
DMA Operation Mode
1.xx
2.00
2.01+
3.xx
4.xx
8-bit Mono PCM Single-cycle
9
9
9
9
9
8-bit Mono PCM Auto-initialize
9
9
9
9
8-bit Mono ADPCM Single-cycle
9
9
9
9
9
8-bit Mono ADPCM Auto-initialize
9
9
9
9
8-bit Mono PCM High-Speed Single-cycle
9
9
8-bit Mono PCM High-Speed Auto-initialize
9
9
8-bit Stereo PCM High-Speed Single-cycle
9
8-bit Stereo PCM High-Speed Auto-initialize
9
8-bit/16-bit Mono PCM Single-cycle
9
8-bit/16-bit Mono PCM Auto-initialize
9
8-bit/16-bit Stereo PCM Single-cycle
9
8-bit/16-bit Stereo PCM Auto-initialize
9
Table 3-1: DMA Operation Modes Supported