Samsung S3C2451X User Manual page 714

PCM AUDIO INTERFACE
PCM_CTLn
PCM_PCM_ENABLE
NOTE:
1) To flush FIFO, first set PCM_TX/RXFIFO_EN =0x0 then set PCM_TX/RXFIFO_EN =0x1.
2) To Start PCM operation please refer the following steps
- PCM_TXFIFO_EN=0x1;
- PCM_TX_DMA_EN=0x1;
- wait until fifo full
- CTL_SERCLK_EN =0x1;
- PCM_PCM_ENABLE = 0x1;
3) To pause PCM operation, with CTL_SERCLK_EN = 0x0, PCM_PCM_ENABLE bit should be set to zero.
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
28-8
Specifications and information herein are subject to change without notice.
Bit
PCM enable signal.
[0]
1: Enables the serial shift state machines.
The enable must be set HIGH for the PCM to operate.
0: The PCMSOUT will not toggle.
The internal divider-counters(serial shift register's counter) are held
3)
in reset.
S3C2451X RISC MICROPROCESSOR
Description
2)
Initial
State
0