WM9712L Datasheet, PDF (63/77 Pages) Wolfson Microelectronics plc – AC97 Audio and Touchpanel CODEC

Production Data
REGISTER BITS BY ADDRESS
WM9712L
Register 00h is a read-only register. Writing any value to this register resets all registers to their default, but does not
change the contents of reg. 00h. Reading the register reveals information about the codec to the driver, as required by the
AC’97 Specification, Revision 2.2
REG
ADDR
00h
BIT
14:10
9:6
5
4
3
2
1
0
LABEL DEFAULT
DESCRIPTION
REFER TO
SE [4:0]
ID9:6
ID5
ID4
ID3
ID2
ID1
ID0
11000
0101
1
1
0
1
0
0
Indicates a codec from Wolfson Microelectronics
Indicates 18 bits resolution for ADCs and DACs
Indicates that the WM9712L supports bass boost
Indicates that the WM9712L has a headphone output
Indicates that the WM9712L does not support simulated stereo
Indicates that the WM9712L supports bass and treble control
Indicates that the WM9712L does not support modem functions
Indicates that the WM9712L does not have a dedicated microphone
ADC
Intel’s AC’97
Component
Specification,
Revision 2.2,
page 50
Register 02h controls the output pins LOUT2 and ROUT2.
REG
ADDR
02h
BIT
15
13:8
7
6
5:0
LABEL
MU
LOUT2 VOL
ZC
INV
ROUT2 VOL
DEFAULT
1 (mute)
000000 (0dB)
0 (OFF)
0 (not inverted)
000000 (0dB)
DESCRIPTION
Mutes LOUT2 and ROUT2.
LOUT2 volume
Enables zero-cross detector
Inverts LOUT2 (for BTL speaker operation)
ROUT2 volume
REFER TO
Analogue
Audio Outputs
Register 04h controls the headphone output pins, HPOUTL and HPOUTR.
REG
ADDR
04h
BIT
15
13:8
7
5:0
LABEL
DEFAULT
DESCRIPTION
MU
HPOUTL VOL
ZC
HPOUTR VOL
1 (mute)
000000 (0dB)
0 (OFF)
000000 (0dB)
Mutes HPOUTL and HPOUTR.
HPOUTL volume
Enables zero-cross detector
HPOUTR volume
REFER TO
Analogue
Audio Outputs
Register 06h controls the analogue output pin MONOOUT.
REG
ADDR
06h
BIT
15
7
5:0
LABEL
MU
ZC
MONOOUT
VOL
DEFAULT
DESCRIPTION
1 (mute)
0 (OFF)
000000 (0dB)
Mutes MONOOUT.
Enables zero-cross detector
MONOOUT volume
REFER TO
Analogue
Audio Outputs
w
PD Rev 4.5 August 2006
63