Samsung S5PC110 Manual page 1888

S5PC110_UM
4.5.1.2 AC97 Global Status Register (AC_GLBSTAT, R, Address = 0xE220_0004)
This is the status register. When the interrupt occurs, you can check the source of interrupt.
AC_GLBSTAT
-
Codec ready interrupt
PCM out channel underrun
interrupt
PCM in channel overrun interrupt
MIC in channel overrun interrupt
PCM out channel threshold
interrupt
PCM in channel threshold
interrupt
MIC in channel threshold
interrupt
-
Controller main state
Bit
[31:23] Reserved.
[22] 0 = Not requested
1 = Requested
[21] 0 = Not requested
1 = Requested
[20] 0 = Not requested
1 = Requested
[19] 0 = Not requested
1 = Requested
[18] 0 = Not requested
1 = Requested
[17] 0 = Not requested
1 = Requested
[16] 0 = Not requested
1 = Requested
[15:3] Reserved.
[2:0] 000 = Idle
001 = Init
010 = Ready
011 = Active
100 = LP
101 = Warm
Description
4 AC97 CONTROLLER
Initial State
0x00
0
0
0
0
0
0
0
0x000
001
4-16