User's Manual

PCM AUDIO INTERFACE S3C2450X RISC MICROPROCESSOR
28-14
3.9 PCM INTERRUPT STATUS REGISTER
The PCM_IRQ_STAT register is used to report IRQ status.
Register Address R/W Description Reset Value
PCM_IRQ_STAT0 0x5C000014 R PCM0 Interrupt Status 0x00000000
PCM_IRQ_STAT1 0x5C000114 R PCM1 Interrupt Status 0x00000000
The bit definitions for the PCM_IRQ_STATUS Register are described below:
PCM_IRQ_STATn Bit Description Initial State
Reserved [31:14]
Reserved
IRQ_PENDING [13]
Monitoring PCM IRQ.
1 = PCM IRQ is occurred.
0 = PCM IRQ is not occurred.
0
TRANSFER_DONE [12]
Interrupt is generated every time the serial shift for a word
completes
1 = IRQ is occurred.
0 = IRQ is not occurred.
0
TXFIFO_EMPTY [11]
Interrupt is generated whenever the TX FIFO is empty
1 = IRQ is occurred.
0 = IRQ is not occurred.
0
TXFIFO_ALMOST
_EMPTY
[10]
Interrupt is generated whenever the TxFIFO is ALMOST empty.
1 = IRQ is occurred.
0 = IRQ is not occurred.
0
TXFIFO_FULL [9]
Interrupt is generated whenever the TX FIFO is full
1 = IRQ is occurred.
0 = IRQ is not occurred.
0
TXFIFO_ALMOST
_FULL
[8]
Interrupt is generated whenever the TX FIFO is ALMOST full.
1 = IRQ is occurred.
0 = IRQ is not occurred.
0
TXFIFO_ERROR
_STARVE
[7]
Interrupt is generated for TX FIFO starve ERROR.
This occurs whenever the TX FIFO is read when it is still empty.
This is considered as an ERROR and will have unexpected
results
1 = IRQ is occurred.
0 = IRQ is not occurred.
0