Production Data
WM9715L
REGISTER BITS BY ADDRESS
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
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
ADDR
00h
14:10
SE [4:0]
ID9:6
ID5
11000
Indicates a codec from Wolfson Microelectronics
Intel’s AC’97
Component
Specification,
Revision 2.2,
page 50
9:6
5
0101
Indicates 18 bits resolution for ADCs and DACs
1
1
0
1
0
0
Indicates that the WM9715L supports bass boost
4
ID4
Indicates that the WM9715L has a headphone output
Indicates that the WM9715L does not support simulated stereo
Indicates that the WM9715L supports bass and treble control
Indicates that the WM9715L does not support modem functions
3
ID3
2
ID2
1
ID1
0
ID0
Indicates that the WM9715L does not have a dedicated microphone
ADC
Register 02h controls the output pins LOUT2 and ROUT2.
REG
ADDR
BIT
15
LABEL
DEFAULT
1 (mute)
DESCRIPTION
Mutes LOUT2 and ROUT2.
REFER TO
02h
MU
Analogue
Audio Outputs
13:8
7
LOUT2 VOL
ZC
000000 (0dB)
0 (OFF)
LOUT2 volume
Enables zero-cross detector
Inverts LOUT2 (for BTL speaker operation)
ROUT2 volume
6
INV
0 (not inverted)
000000 (0dB)
5:0
ROUT2 VOL
Register 04h controls the headphone output pins, HPOUTL and HPOUTR.
REG
ADDR
BIT
15
LABEL
DEFAULT
1 (mute)
DESCRIPTION
Mutes HPOUTL and HPOUTR.
REFER TO
04h
MU
Analogue
Audio Outputs
13:8
7
HPOUTL VOL
ZC
000000 (0dB)
0 (OFF)
HPOUTL volume
Enables zero-cross detector
HPOUTR volume
5:0
HPOUTR VOL 000000 (0dB)
Register 06h controls the analogue output pin MONOOUT.
REG
ADDR
BIT
15
LABEL
DEFAULT
1 (mute)
DESCRIPTION
REFER TO
06h
MU
ZC
Mutes MONOOUT.
Analogue
Audio Outputs
7
0 (OFF)
Enables zero-cross detector
MONOOUT volume
5:0
MONOOUT
VOL
000000 (0dB)
PD Rev 4.0 December 2007
63
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
