wm8976gefl-v Wolfson Microelectronics plc, wm8976gefl-v Datasheet - Page 54
wm8976gefl-v
Manufacturer Part Number
wm8976gefl-v
Description
Stereo Codec With Speaker Driver
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8976GEFL-V.pdf
(111 pages)
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WM8976
w
Table 39 Left and Right Output Mixer Control
HEADPHONE OUTPUTS (LOUT1 AND ROUT1)
Figure 28 Headphone Outputs LOUT1 and ROUT1
The headphone outputs, LOUT1 and ROUT1 can drive a 16Ω or 32Ω headphone load, either through
DC blocking capacitors, or DC coupled without any capacitor. Each headphone output has an
analogue volume control PGA with a gain range of -57dB to +6dB as shown in Figure 30.
R51
Right channel
output mixer
control
R3
Power
management
3
REGISTER
ADDRESS
0
4:2
5
8:6
2
3
BIT
RMIXEN
DACR2RMIX
BYPRMIXVOL
AUXR2RMIX
AUXRMIXVOL
LMIXEN
LABEL
DEFAULT
000
000
0
0
1
0
Right DAC output to right output
mixer
0 = not selected
1 = selected
Right bypass volume control to
output channel mixer:
000 = -15dB
001 = -12dB
…
101 = 0dB
110 = +3dB
111 = +6dB
Right Auxiliary input to right channel
output mixer:
0 = not selected
1 = selected
Aux right channel input to right mixer
volume control:
000 = -15dB
001 = -12dB
…
101 = 0dB
110 = +3dB
111 = +6dB
Left output channel mixer enable:
0 = disabled
1= enabled
Right output channel mixer enable:
0 = disabled
1 = enabled
DESCRIPTION
PD Rev 4.4 July 2009
Production Data
54
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