WM8990ECS/RV Wolfson Microelectronics, WM8990ECS/RV Datasheet - Page 52

• Manufacturer Part Number: WM8990ECS/RV
• Description: Audio CODECs Stereo CODEC w.Class AB/D speaker driver
• Manufacturer: Wolfson Microelectronics

Specifications of WM8990ECS/RV

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8990
w
INPUT MIXER VOLUME CONTROL
The Input Mixer volume controls are described in Table 12 for the Left Channel and Table 13 for the
Right Channel. The Input PGA levels may be set to Mute, 0dB or 30dB boost. The other gain controls
provide adjustment from -12dB to +6dB in 3dB steps.
To prevent pop noise it is recommended that gain and mute controls for the input mixers are not
modified while the signal paths are active. If volume control is required on the input signal path it is
recommended that the input PGA volume controls or the ADC volume controls are used instead of
the input mixer gain registers.
R41 (29h)
R43 (2Bh)
REGISTER
ADDRESS
8
7
5
4
2:0
8:6
5:3
BIT
L34MNB
L34MNBST
L12MNB
L12MNBST
LDBVOL
[2:0]
LI2BVOL
[2:0]
LR4BVOL
[2:0]
LABEL
0b
0b
0b
0b
000b
(Mute)
000b
(Mute)
000b
(Mute)
DEFAULT
LIN34 PGA Output to INMIXL Mute
0 = Mute
1 = Un-Mute
LIN34 PGA Output to INMIXL Gain
0 = 0dB
1 = +30dB
LIN12 PGA Output to INMIXL Mute
0 = Mute
1 = Un-Mute
LIN12 PGA Output to INMIXL Gain
0 = 0dB
1 = +30dB
LOMIX to INMIXL Gain and Mute
000 = Mute
001 = -12dB
010 = -9dB
011 = -6dB
100 = -3dB
101 = 0dB
110 = +3dB
111 = +6dB
LIN2 Pin to INMIXL Gain and Mute
000 = Mute
001 = -12dB
010 = -9dB
011 = -6dB
100 = -3dB
101 = 0dB
110 = +3dB
111 = +6dB
RXVOICE to AINLMUX Gain and Mute
000 = Mute
001 = -12dB
010 = -9dB
011 = -6dB
100 = -3dB
101 = 0dB
110 = +3dB
111 = +6dB
DESCRIPTION
PD, March 2009, Rev 4.0
Production Data
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