WM8959 Wolfson Microelectronics Ltd., WM8959 Datasheet - Page 64

• Manufacturer Part Number: WM8959
• Description: Mobile Multimedia DAC with Dual-mode Class AB/D Speaker Driver
• Manufacturer: Wolfson Microelectronics Ltd.

WM8959
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The output mixers OUT3MIX and OUT4MIX and their outputs OUT3 and OUT4 are controlled as
described in Table 30. Care should be taken to avoid clipping when enabling more than one path to
OUT3 or OUT4. The OUT3ATTN and OUT4ATTN attenuation controls can be used to prevent
clipping when more than one full scale signal is input to the mixers.
Table 30 OUT3 and OUT4 Volume Control
R31 (1Fh)
R51 (33h)
REGISTER
ADDRESS
BIT
5
4
1
0
5
4
1
0
OUT3MUTE
OUT3ATTN
OUT4MUTE
OUT4ATTN
LI4O3
LPGAO3
RI4O4
RPGAO4
LABEL
DEFAULT
1b
0b
1b
0b
0b
0b
0b
0b
OUT3 Mute
0 = Un-mute
1 = Mute
0 = 0dB
1 = -6dB
OUT4 Mute
0 = Un-mute
1 = Mute
0 = 0dB
1 = -6dB
0 = Mute
1 = Un-mute
LOPGA to OUT3MIX
0 = Mute
1 = Un-mute
0 = Mute
1 = Un-mute
0 = Mute
1 = Un-mute
OUT3 Attenuation
OUT4 Attenuation
LIN4/RXN Pin to OUT3MIX
RIN4/RXP Pin to OUT4MIX
ROPGA to OUT4MIX
DESCRIPTION
PP, May 2008, Rev 3.1
Pre-Production
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