WM8976 Wolfson Microelectronics Ltd., WM8976 Datasheet - Page 94

• Manufacturer Part Number: WM8976
• Description: The WM8976 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
• Manufacturer: Wolfson Microelectronics Ltd.

WM8976
w
40 (28h)
41 (29h)
43 (2Bh)
44 (2Ch)
45 (2Dh)
REGISTER
ADDRESS
8:0
8:4
3:0
8:6
5
4
3:1
0
8
7:3
2
1
0
8
7
6
5:0
BIT
DEPTH3D
MUTERPGA
2INV
INVROUT2
BEEPVOL
BEEPEN
MBVSEL
L2_2INP
PGA
LIN2INP
PGA
LIP2INP
PGA
INPPGA
UPDATE
INPPGAZCL
INPPGA
MUTEL
INPPGA
VOLL
LABEL
00000000
00000
0000
000
0
0
00000
0
0
0
000
0
0
1
1
N/A
0
010000
DEFAULT
Reserved
Reserved
Stereo depth
0000: 0% (minimum 3D effect)
0001: 6.67%
....
1110: 93.3%
1111: 100% (maximum 3D effect)
Reserved
Mute input to INVROUT2 mixer
Mute input to INVROUT2 mixer
AUXR input to ROUT2 inverter gain
000 = -15dB
...
111 = +6dB
0 = mute AUXR beep input
1 = enable AUXR beep input
Microphone Bias Voltage Control
0 = 0.9 * AVDD
1 = 0.6 * AVDD
Reserved
Connect L2 pin to input PGA positive terminal.
0=L2 not connected to input PGA
1=L2 connected to input PGA amplifier positive
terminal (constant input impedance).
Connect LIN pin to input PGA negative terminal.
0=LIN not connected to input PGA
1=LIN connected to input PGA amplifier negative
terminal.
Connect LIP pin to input PGA amplifier positive
terminal.
0 = LIP not connected to input PGA
1 = input PGA amplifier positive terminal
connected to LIP (constant input impedance)
INPPGAVOLL and INPPGAVOLR volume do not
update until a 1 is written to INPPGAUPDATE (in
reg 45 or 46)
Input PGA zero cross enable:
0=Update gain when gain register changes
1=Update gain on 1
write.
Mute control for input PGA:
0=Input PGA not muted, normal operation
1=Input PGA muted (and disconnected from the
following input BOOST stage).
Input PGA volume
000000 = -12dB
000001 = -11.25db
.
010000 = 0dB
.
111111 = 35.25dB
DESCRIPTION
st
zero cross after gain register
PP Rev 3.0 April 2006
3D Stereo
Enhancement
Analogue
Outputs
Analogue
Outputs
Analogue
Outputs
Analogue
Outputs
Input Signal
Path
Input Signal
Path
Input Signal
Path
Input Signal
Path
Input Signal
Path
Input Signal
Path
Input Signal
Path
Input Signal
Path
REFER TO
Pre-Production
94