Samsung S5PC100, User Manual, Page: 1713 / 1863

PCM AUDIO INTERFACE S5PC100 USER’S MANUAL (REV1.0)
10.5-12
6.6 PCM INTERRUPT STATUS REGISTER
y
PCM_0_IRQ_STAT, R/O, Address = 0xF240_0014
y
PCM_1_IRQ_STAT, R/O, Address = 0xF250_0014
The PCM_n_IRQ_STAT register is used to report IRQ status.
The bit definitions for the PCM_n_IRQ_STATUS Register are described below:
PCM_n_IRQ_STAT Bit Description Reset Value
Reserved [31:14] Reserved 0
IRQ_PENDING [13] Controls whether or not the PCM interrupt is sent to the DSP
1 = PCM IRQ is forwarded to the DSP subsystem
0 = PCM IRQ is NOT forwarded to the DSP subsystem
0
TRANSFER
_DONE
[12] Interrupt is generated every time the serial shift for a word
completes
1= Enables IRQ source
0 = Disables IRQ source
0
TXFIFO_EMPTY [11] Interrupt is generated if the TxFIFO is empty
1= Enables IRQ source
0 = Disables IRQ source
0
TXFIFO_ALMOST
_EMPTY
[10] Interrupt is generated if the TxFIFO is ALMOST empty.
Almost empty is defined as FIXME words remaining
1 = Enables IRQ source
0 = Disables IRQ source
0
TXFIFO_FULL [9] Interrupt is generated if the TxFIFO is full
1 = Enables IRQ source
0 = Disables IRQ source
0
TXFIFO_ALMOST
_FULL
[8] Interrupt is generated whenever the TxFIFO is ALMOST full.
Almost full is defined as FIXME words remaining
1 = Enables IRQ source
0 = Disables IRQ source
0
TXFIFO_ERROR
_STARVE
[7] Interrupt is generated for TxFIFO starve ERROR.
This occurs if the TxFIFO is read when it is still empty.
This is considered an ERROR and has unexpected results
1 = Enables IRQ source
0 = Disables IRQ source
0
TXFIFO_ERROR
_OVERFLOW
[6] Interrupt is generated for TxFIFO overflow ERROR.
This occurs if the TxFIFO is written when it is already full.
This is considered an ERROR and has unexpected results
1 =Enables IRQ source
0 = Disables IRQ source
0