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PRELIMINARY
AC97 CONTROLLER
S3C6400 RISC MICROPROCESSOR
35-12
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
Codec ready interrupt enable
[22]
0 : Disable 1 : Enable
0
PCM out channel underrun
interrupt enable
[21]
0 : Disable
1 : Enable ( FIFO is empty)
0
PCM in channel overrun
interrupt enable
[20]
0 : Disable
1 : Enable ( FIFO is full)
0
Mic in channel overrun
interrupt enable
[19]
0 : Disable
1 : Enable ( FIFO is full)
0
PCM out channel threshold
interrupt enable
[18]
0 : Disable
1 : Enable ( FIFO is half empty)
0
PCM in channel threshold
interrupt enable
[17]
0 : Disable
1 : Enable ( FIFO is half full)
0
MIC in channel threshold
interrupt enable
[16]
0 : Disable
1 : Enable ( FIFO is half full)
0
- [15:14]
Reserved.
00
PCM out channel transfer
mode
[13:12]
00 : Off 01 : PIO 10 : DMA 11 : Reserved
00
PCM in channel transfer
mode
[11:10]
00 : Off 01 : PIO 10 : DMA 11 : Reserved
00
MIC in channel transfer mode
[9:8]
00 : Off 01 : PIO 10 : DMA 11 : Reserved
00
- [7:4]
Reserved.
0000
Transfer data enable using
AC-link
[3]
0 : Disable 1 : Enable
0
AC-Link on
[2]
0 : Off
1 : SYNC signal transfer to Codec
0
Warm reset
[1]
0 : Normal
1 : Wake up codec from power down
0
Cold reset
[0]
0 : Normal
1 : Reset Codec and Controller logic
0
AC97 GLOBAL STATUS REGISTER (AC_GLBSTAT)
This is the status register. When the interrupt is occurs, you can check what the interrupt source is.
Register
Address
R/W
Description
Reset Value
AC_GLBSTAT
0x7F001004
R
AC97 Global Status Register
0x00000001
AC_GLBSTAT
Bit
Description
Initial State
- [31:23]
Reserved. 0x00
Codec ready interrupt
[22]
0 : Not requested 1 : Requested
0
PCM out channel underrun
interrupt
[21]
0 : Not requested 1 : Requested
0
PCM in channel overrun
[20]
0 : Not requested 1 : Requested
0