WM8976 Wolfson Microelectronics Ltd., WM8976 Datasheet - Page 51

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WM8976

Manufacturer Part Number
WM8976
Description
The WM8976 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
Manufacturer
Wolfson Microelectronics Ltd.
Datasheet

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Pre-Production
w
Table 38 Left and Right Output Mixer Control
HEADPHONE OUTPUTS (LOUT1 AND ROUT1)
Figure 21 Headphone Outputs LOUT1 and ROUT1
The headphone outputs, LOUT1 and ROUT1 can drive a 16
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.
R51
Right channel
output mixer
control
R3
Power
management
3
0
4:2
5
8:6
2
3
DACR2RMIX
BYPRMIXVOL
AUXR2RMIX
AUXRMIXVOL
LMIXEN
RMIXEN
000
000
0
0
1
0
Right DAC output to right output
mixer
0 = not selected
1 = selected
output channel mixer:
000 = -15dB
001 = -12dB
101 = 0dB
110 = +3dB
111 = +6dB
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
Right bypass volume control to
Right Auxiliary input to right channel
or 32
headphone load, either
PP Rev 3.0 April 2006
WM8976
51

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