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S3C2416X RISC MICROPROCESSOR
AC97
CONTROLLER
24-1
24
AC97 CONTROLLER
1 OVERVIEW
The AC97 Controller Unit of the S3C2416 supports the AC97 revision 2.0 features. AC97 Controller
communicates with AC97 Codec using audio controller link (AC-link). Controller sends the stereo PCM data to
Codec. The external digital-to-analog converter (DAC) in the Codec then converts the audio sample to an analog
audio waveform. Also, Controller receives the stereo PCM data and the mono Mic data from Codec then store in
memories. This chapter describes the programming model for the AC97 Controller Unit. The information in this
chapter requires an understanding of the AC97 revision 2.0 specifications.
1.1 FEATURE
•
Independent channels for stereo PCM In(Slot3, Slot4), mono MIC In(Slot 6), stereo PCM Out(Slot3, Slot4).
•
DMA-based operation and interrupt based operation.
•
All of the channels support only 16-bit samples.
•
Variable sampling rate AC97 Codec interface (48kHz and below)
•
16-bit, 16 entry FIFOs per channel
•
Only primary Codec support
1.2 SIGNALS
Name
Direction
Description
AC_nRESET
Output
Active-low CODEC reset.
AC_BIT_CLK
Input
12.288MHz bit-rate clock
AC_SYNC
Output
48 kHz frame indicator and synchronizer
AC_SDO
Output
Serial audio output data.
AC_SDI
Input
Serial audio input data.
Summary of Contents for S3C2416
Page 122: ...BUS MATRIX EBI S3C2416X RISC MICROPROCESSOR 3 4 NOTES ...
Page 204: ...DMA CONTROLLER S3C2416X RISC MICROPROCESSOR 8 18 NOTES ...
Page 284: ...WATCHDOG TIMER S3C2416X RISC MICROPROCESSOR 11 6 NOTES ...
Page 320: ...REAL TIME CLOCK S3C2416X RISC MICROPROCESSOR 13 16 NOTES ...
Page 344: ...UART S3C2416X RISC MICROPROCESSOR 14 24 NOTES ...
Page 380: ...USB2 0 DEVICE S3C2416X RISC MICROPROCESSOR 16 34 NOTES ...
Page 432: ...2D S3C2416X RISC MICROPROCESSOR 18 38 NOTES ...
Page 446: ...HS_SPI CONTROLLER S3C2416X RISC MICROPROCESSOR 19 14 NOTES ...
Page 604: ...S3C2416X RISC MICROPROCESSOR S3C2416X RISC MICROPROCESSOR 23 22 NOTES ...
Page 638: ...PCM AUDIO INTERFACE S3C2416X RISC MICROPROCESSOR 25 18 NOTES ...
Page 670: ...ELECTRICAL DATA S3C2416X RISC MICROPROCESSOR 26 32 NOTES ...