Pre-Production
WM8976
R51
0
DACR2RMIX
1
Right DAC output to right output
mixer
Right channel
output mixer
control
0 = not selected
1 = selected
4:2
BYPRMIXVOL
000
Right bypass volume control to
output channel mixer:
000 = -15dB
001 = -12dB
…
101 = 0dB
110 = +3dB
111 = +6dB
5
AUXR2RMIX
0
Right Auxiliary input to right channel
output mixer:
0 = not selected
1 = selected
8:6
AUXRMIXVOL
000
Aux right channel input to right mixer
volume control:
000 = -15dB
001 = -12dB
…
101 = 0dB
110 = +3dB
111 = +6dB
R3
2
3
LMIXEN
RMIXEN
0
0
Left output channel mixer enable:
0 = disabled
Power
management
3
1= enabled
Right output channel mixer enable:
0 = disabled
1 = enabled
Table 38 Left and Right Output Mixer Control
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 23.
Figure 21 Headphone Outputs LOUT1 and ROUT1
PP Rev 3.0 April 2006
51
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
