wm9708 Wolfson Microelectronics plc, wm9708 Datasheet - Page 28

• Manufacturer Part Number: wm9708
• Description: Ac?97 Revision 2.1 Audio Codec
• Manufacturer: Wolfson Microelectronics plc

WM9708
SERIAL INTERFACE REGISTER MAP
Reg Name
00h
02h
04h
06h
0Ah
0Eh
10h
12h
18h
1Ah
1Ch
20h
26h
28h
2Ah
2Ch
32h
5Ch
72h
74h
7Ah
7Ch
7Eh
Table 15 Serial Interface Register Map Description
Note:
All unused bits should have zeros written to them and will return the same when read.
w
Reset
Master volume
LNLVL volume
Master volume mono Mute
PCBEEP volume
Mic volume
Line in volume
CD volume
PCM out volume
Rec select
Rec gain
General purpose
Power/down control
Ext’d audio ID
Ext’d audio stat/ctrl
Front DAC rate
Audio ADC rate
Vendor specific
Front mixer volume
Surround sound
Vendor reserved
Vendor ID1
Vendor ID2
status
EAPD
SR15 SR14 SR13 SR12 SR11 SR10
SR15 SR14 SR13 SR12 SR11 SR10
D15
Mute
Mute
Mute
Mute
Mute
Mute
Mute
Mute
POP
Mute
ID1
F7
T7
X
X
X
X
X
Table 14 Vendor ID Registers - Reg 74 [1:0]
This allows the user to connect multiple codecs to a host controller using a single AC-link interface.
The volume control register is still 02h and the rate register is 2Ch. The ID pins have no effect on this
mapping.
The following table shows the function and address of the various control bits that are loaded through
the serial interface during write operations.
D14
PRL
SE4
ID0
ST
REVISION
F6
T6
X
X
X
X
X
X
X
X
X
X
X
X
X
X
SURROUND SOUND
DSS1, DSS0
D13
PRK
SE3
PR5
3D
F5
T5
X
X
X
X
X
X
X
X
X
X
X
X
X
X
1X
00
01
D12
SE2
ML4
ML4
GL4
GL4
GL4
PR4
PRJ
GL4
F4
T4
lD
X
X
X
X
X
X
X
X
D11
SE1
ML3
ML3
GL3
GL3
GL3
GL3
PR3
GL3
PRI
F3
T3
X
X
X
X
X
X
X
X
X
D10
SE0
ML2
ML2
GL2
GL2
GL2
GL2
PR2
GL2
SL2
F2
T2
X
X
X
X
X
X
X
X
X
PCM OUT LEFT
Amap Ldac Sdac Cdac
Madc Ldac Sdac Cdac
ML1
ML1
GL1
GL1
GL1
GL1
PR1
SR9
SR9
GL1
SL1
MIX
D9
ID9
F1
T1
X
X
X
X
X
X
3
7
6
ML0
ML0
PR0
SR8
SR8
GL0
GL0
GL0
SL0
GL0
GL0
ID8
D8
MS
F0
T0
X
X
X
X
X
X
LPBK
Rev7 Rev6 Rev5 Rev4 Rev3 Rev2 Rev1
SR7
SR7
D7
ID7
S7
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PCM OUT RIGHT
20dB
SR6
SR6
ID6
D6
S6
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
4
8
9
SR5
SR5
D5
ID5
S5
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
MR4
MR4
MM4
GN4
GR4
GR4
GR4
SR4
SR4
GR4
PV3
D4
ID4
S4
X
X
X
X
X
X
X
X
X
MM3
VRM
VRM
MR3
MR3
GN3
GR3
GR3
GR3
GR3
REF
GR3
PV2
SR3
SR3
D3
ID3
S3
X
X
X
X
X
PD, Rev 4.2, August 2009
MM2
MR2
MR2
GN2
GR2
GR2
GR2
GR2
GR2
PV2
SR2
ANL
SR2
SR2
D2
ID2
S2
X
X
X
X
X
X
Production Data
DSS1 DSS0
MM1
MR1
MR1
GN1
GR1
GR1
GR1
GR1
DAC
DRA
DRA
GR1
PV0
SR1
SR1
SR1
D1
ID1
S1
X
X
X
Rev0
MM0
AME
MR0
MR0
GN0
GR0
GR0
GR0
GR0
ADC
VRA
VRA
GR0
SR0
SR0
SR0
D0
ID0
S0
X
X
X
28
Default
BB80h
BB80h
574Dh
4C03h
6150h
8000h
8000h
8000h
8000h
8008h
8808h
8808h
8808h
0000h
8000h
0000h
000Fh
1001h
0000h
1000h
0808h
0000h
0000h