wm8903 Wolfson Microelectronics plc, wm8903 Datasheet - Page 60

• Manufacturer Part Number: wm8903
• Description: Ultra Low Power Codec For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

WM8903
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The input signals to the speaker mixers are enabled and controlled using the register fields described
in Table 39.
These mixers provide a selectable 0dB or -6dB volume control on each input. The input signals may
also be controlled at source using the control fields LIN_VOL, RIN_VOL, DACL_VOL and
DACR_VOL, but it should be noted that adjusting these fields would also affect the other output
mixers.
R52 (34h)
Analogue Spk
Mix Left 0
R53 (35h)
Analogue Spk
Mix Left 1
R54 (36h)
Analogue Spk
Mix Right 0
REGISTER
ADDRESS
BIT
3
2
1
0
3
2
1
0
3
2
1
0
DACL_TO_MIXSP
KL
DACR_TO_MIXS
PKL
BYPASSL_TO_MI
XSPKL
BYPASSR_TO_MI
XSPKL
DACL_MIXSPKL_
VOL
DACR_MIXSPKL_
VOL
BYPASSL_MIXSP
KL_VOL
BYPASSR_MIXS
PKL_VOL
DACL_TO_MIXSP
KR
DACR_TO_MIXS
PKR
BYPASSL_TO_MI
XSPKR
BYPASSR_TO_MI
XSPKR
LABEL
DEFAULT
0
0
0
0
0
0
0
0
0
0
0
0
Left DAC to Left Spkr Mixer Enable
0 = disabled
1 = enabled
Right DAC to Left Spkr Mixer
Enable
0 = disabled
1 = enabled
Left Analogue Input to Left Spkr
Mixer Enable
0 = disabled
1 = enabled
Right Analogue Input to Left Spkr
Mixer Enable
0 = disabled
1 = enabled
Left DAC to Left Spkr Mixer volume
control
0 = 0dB
1 = -6dB
Right DAC to Left Spkr Mixer
volume control
0 = 0dB
1 = -6dB
Left Analogue Input to Left Spkr
Mixer volume control
0 = 0dB
1 = -6dB
Right Analogue Input to Left Spkr
Mixer volume control
0 = 0dB
1 = -6dB
Left DAC to Right Spkr Mixer
Enable
0 = disabled
1 = enabled
Right DAC to Right Spkr Mixer
Enable
0 = disabled
1 = enabled
Left Analogue Input to Right Spkr
Mixer Enable
0 = disabled
1 = enabled
Right Analogue Input to Right Spkr
Mixer Enable
0 = disabled
1 = enabled
PP, Rev 3.1, August 2009
DESCRIPTION
Pre-Production
60