Preliminary
S3C2451 RISC MICROPROCESSOR AC97 CONTROLLER
27-15
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.
AC97 CODEC STATUS REGISTER (AC_CODEC_STAT)
If the Read enable bit is 1 and Codec command address is valid, Codec status data is also valid.
Register Address
R/W
Description
Reset
Value
AC_CODEC_STAT 0x5B00000C R
AC97
Codec Status Register
0x00000000
AC_CODEC_STAT Bit
Description
Initial
State
-
[31:23] Reserved.
0x00
Address
[22:16]
Codec status address
0x00
Data
[15:0]
Codec status data
0x0000
NOTES:
If you want to read data from AC97 codec register via the AC_CODDEC_STAT register, you should follow the steps.
1. Write command address and data on the AC_CODEC_CMD register with Bit[23] =1.
2. Have a delay time.
3. Read command address and data from AC_CODEC_STAT register.
AC97 PCM OUT/IN CHANNEL FIFO ADDRESS REGISTER (AC_PCMADDR)
To index the internal PCM FIFOs address.
Register Address
R/W
Description
Reset
Value
AC_PCMADDR 0x5B00001
0
R
AC97 PCM Out/In Channel FIFO Address Register 0x00000000
AC_PCMADDR Bit
Description
Initial
State
-
[31:28] Reserved.
0000
Out read address
[27:24]
PCM out channel FIFO read address
0000
-
[23:20] Reserved.
0000
In read address
[19:16]
PCM in channel FIFO read address
0000
-
[15:12] Reserved.
0000
Out write address
[11:8]
PCM out channel FIFO write address
0000
-
[7:4] Reserved.
0000
In write address
[3:0]
PCM in channel FIFO write address
0000