Ac97 Controller - Samsung S5PC100 User Manual

S5PC100 USER'S MANUAL (REV1.0)
10.4
This chapter describes the functions and usage of AC97 Controller in S5PC100 RISC microprocessor.
1 OVERVIEW
The AC97 Controller Unit of the S5PC100 supports the AC97 revision 2.0 features. AC97 Controller
communicates with AC97 Codec using Audio Controller Link (AC-link). The Controller sends the stereo PCM data
to Codec. The external Digital-to-Analog Converter (DAC) in the Codec converts the audio sample to an analog
audio waveform. The Controller receives the stereo PCM data and the mono Mic data from Codec then stores in
memories. This chapter describes the programming model for the AC97 Controller Unit. The prerequisite to
understand this chapter requires a knowledge of the AC97 revision 2.0 specifications.
2 FEATURE
The AC97 Controller includes the following features:
•
Independent channels for stereo PCM In, stereo PCM Out, and mono MIC In.
•
DMA-based operation and interrupt based operation.
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All channels support only 16-bit samples.
•
Variable sampling rate AC97 Codec interface (48 kHz and below)
•
16-bit, 16 entry FIFOs per channel
•
Only primary Codec support

AC97 CONTROLLER

AC97 CONTROLLER
10.4-1