Samsung S3C2416 User Manual page 635

S3C2416X RISC MICROPROCESSOR
PCM_IRQ_STAT
RXFIFO_EMPTY
RXFIFO_ALMOST
_EMPTY
RX_FIFO_FULL
RX_FIFO_ALMOST
_FULL
RXFIFO_ERROR
_STARVE
RXFIFO_ERROR
_OVERFLOW
NOTE: More than one interrupt sources(which was set by PCM_IRQ_CTL register) can cause interrupt, at same time(i.e,
interrupt at PCM is OR-ed interrupt.) So in Interrupt Service Routine, user should check this register bits which you set
as interrupt sources.
Bit
[5]
Interrupt is generated whenever the RX FIFO is empty
1 = IRQ is occurred.
0 = IRQ is not occurred.
[4]
Interrupt is generated whenever the RX FIFO is ALMOST
empty.
1 = IRQ is occurred.
0 = IRQ is not occurred.
[3]
Interrupt is generated whenever the RX FIFO is full
1 = IRQ is occurred.
0 = IRQ is not occurred.
[2]
Interrupt is generated whenever the RX FIFO is ALMOST full.
1 = IRQ is occurred.
0 = IRQ is not occurred.
[1]
Interrupt is generated for RX FIFO starve ERROR.
This occurs whenever the RX 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]
Interrupt is generated for RX FIFO overflow ERROR.
This occurs whenever the RX FIFO is written when it is already
full. This is considered as an ERROR and will have unexpected
results
1 = IRQ is occurred.
0 = IRQ is not occurred.
Description
PCM AUDIO INTERFACE
Initial State
0
0
0
0
0
0
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