alc203-lf Realtek Semiconductor Corporation, alc203-lf Datasheet - Page 39

• Manufacturer Part Number: alc203-lf
• Description: Two-channel Ac?97 2.3 Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

9.2 AC-Link
When the ALC203 receives serial data from the AC97 controller, it samples SDATA_OUT on the falling edge of BIT_CLK.
When the ALC203 sends serial data to the AC97 controller, it starts to drive SDATA_IN on the rising edge of BIT_CLK.
The ALC203 will return any uninstalled bits or registers with 0 for read operations. The ALC203 also stuffs the unimplemented
slot or bit with 0 in SDATA_IN. Note that AC-LINK is MSB-justified.
Refer to ‘Audio CODEC ’97 Component Specification Revision 2.1/2.2/2.3’ for details.
Two-Channel AC’97 2.3 Audio Codec
SDATA-OUT
SDATA-OUT
SDATA-OUT
SDATA-IN
SDATA-IN
SDATA-IN
Slot#
SYNC
SYNC
SYNC
Slot#
Slot#
TAG CMD DATA PCM
TAG ADD
TAG CMD DATA
TAG ADD
TAG CMD DATA
TAG ADD
0
0
0
1
R
1
R
1
R
DATA PCM
DATA PCM
DATA PCM
2
2
2
Default ALC203 Slot Arrangement – CODEC ID = 01,10
Default ALC203 Slot Arrangement – CODEC ID = 00
Default ALC203 slot arrangement – CODEC ID = 11
3
L
L
3
L
3
L
PCMR
PCMR
PCMR
PCMR
4
4
4
5
5
5
SPDIF
6
6
L
6
SPDIF
35
PCM
PCM
7
L
7
L
7
L
PCMR SPDIF
PCMR
SPDIF
8
R
8
8
R
9
9
9
SPDIF
10
10
10
L
SPDIF
11
11
11
L
12
12
12
ALC203 DataSheet
Rev1.6