WM8985_07 WOLFSON [Wolfson Microelectronics plc], WM8985_07 Datasheet - Page 64

• Manufacturer Part Number: WM8985_07
• Description: Multimedia CODEC With Class D Headphone and Line Out
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

WM8985
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Table 33 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 to a buffered midrail reference (LOUT2 or ROUT2), saving a
capacitor (capless mode). When using capless mode AVDD1 and AVDD2 should use the same
supply to maximise supply rejection. OUT3 and OUT4 should not be used as a buffered midrail
reference in capless mode.
R51 (33h)
Right channel
output mixer
control
R3 (03h)
Power
management
3
0
1
4:2
5
8:6
2
3
DACR2RMIX
BYPR2RMIX
BYPRMIXVOL
AUXR2RMIX
AUXRMIXVOL
LMIXEN
RMIXEN
0
0
000
000
1
0
0
Right DAC output to right output
mixer
0 = not selected
1 = selected
Right bypass path (from the right
channel input PGA stage) to right
output mixer
0 = not selected
1 = selected
Right bypass volume control to
output channel mixer:
000 = -15dB
001 = -12dB
010 = -9dB
011 = -6dB
100 = -3dB
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
010 = -9dB
011 = -6dB
100 = -3dB
101 = 0dB
110 = +3dB
111 = +6dB
0 = disabled
1= enabled
Right output channel mixer enable:
0 = disabled
1 = enabled
Left output channel mixer enable:
PP, Rev 3.5, March 2007
Pre-Production
64