wm9714l Wolfson Microelectronics plc, wm9714l Datasheet - Page 81

• Manufacturer Part Number: wm9714l
• Description: Ac?97 Audio Codec
• Manufacturer: Wolfson Microelectronics plc

00h
read-only
02h
Pre-Production
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
Register 02h controls the output pins SPKL and SPKR.
w
REGISTER
REGISTER
ADDRESS
ADDRESS
14:10
9:6
5
4
3
2
1
0
15
14
13:8
7
6
5:0
BIT
BIT
SE [4:0]
ID9:6
ID5
ID4
ID3
ID2
ID1
ID0
MUL
ZCL
SPKLVOL
MUR
ZCR
SPKRVOL
LABEL
LABEL
11000
0101
1
1
0
1
0
0
1 (mute)
0 (disabled)
000000 (0dB)
1 (mute)
0 (disabled)
000000 (0dB)
DEFAULT
DEFAULT
Indicates a codec from Wolfson Microelectronics
Indicates 18 bits resolution for ADCs and DACs
Indicates that the WM9714L supports bass boost
Indicates that the WM9714L has a headphone
output
Indicates that the WM9714L does not support
simulated stereo
Indicates that the WM9714L supports bass and
treble control
Indicates that the WM9714L does not support
modem functions
Indicates that the WM9714L does not have a
dedicated microphone ADC
SPKL Mute Control
1 = Mute
0 = No mute
SPKL Zero Cross Control
1 = Zero cross enabled
0 = Zero cross disabled
SPKL Volume Control
000000 = 0dB (maximum)
… (1.5dB steps)
011111 = -46.5dB
1xxxxx = -46.5dB
SPKR Mute Control
1 = Mute
0 = No mute
SPKR Zero Cross Control
1 = Zero cross enabled
0 = Zero cross disabled
SPKR Volume Control
000000 = 0dB (maximum)
… (1.5dB steps)
011111 = -46.5dB
1xxxxx = -46.5dB
DESCRIPTION
DESCRIPTION
PP, Rev 3.2, October 2008
WM9714L
Intel’s AC’97
Component
Specification,
Revision 2.2,
page 50
Analogue
Audio Outputs
REFER TO
REFER TO
81