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Original Power Mac G4 Developer Note
Sound IC Support
The KeyLargo IC has a traditional DAV port that connects to the Screamer sound IC. The KeyLargo IC provides DB-DMA (descriptor-based direct memory access) support for the DAV port.
The Screamer sound IC is an audio codec with added input and output controls. It is a 16-bit device with two analog stereo input channels and two analog stereo output channels. Either stereo pair of input channels can be selected for digitization by the internal A-to-D converter.
For a description of the features of the sound system, see
Sound System
.
© 2000 Apple Computer, Inc. (Last Updated 13 Jan 00)