WM8955_06 Datasheet, PDF (22/46 Pages) Wolfson Microelectronics plc – Stereo DAC For Portable Audio Applications

WM8955L
Production Data
REGISTER
ADDRESS
R36 (24h)
Right Mixer
(1)
BIT
LABEL
8
LD2RO
7
MI2RO
6:4 MI2ROVOL
R37 (25h)
8
RD2RO
Right Mixer
(2)
7
RI2RO
6:4 RI2ROVOL
Table 8 Right Output Mixer Control
DEFAULT
DESCRIPTION
0
0
101
(-9dB)
0
0
101
(-9dB)
Left DAC to Right Mixer
0 = Disable (Mute)
1 = Enable Path
MONOIN Signal to Right Mixer
0 = Disable (Mute)
1 = Enable Path
MONOIN Signal to Right Mixer Volume
000 = +6dB
… (3dB steps)
111 = -15dB
Right DAC to Right Mixer
0 = Disable (Mute)
1 = Enable Path
LINEINR Signal to Right Mixer
0 = Disable (Mute)
1 = Enable Path
LINEINR Signal to Right Mixer Volume
000 = +6dB
… (3dB steps)
111 = -15dB
REGISTER
ADDRESS
R38 (26h)
Mono Mixer
(1)
BIT
LABEL
8
LD2MO
7
LI2MO
6:4 LI2MOVOL
R39 (27h)
8
RD2MO
Mono Mixer
(2)
7
RI2MO
6:4 RI2MOVOL
Table 9 Mono Output Mixer Control
DEFAULT
DESCRIPTION
0
0
101
(-9dB)
0
0
101
(-9dB)
Left DAC to Mono Mixer
0 = Disable (Mute)
1 = Enable Path
LINEINL Signal to Mono Mixer
0 = Disable (Mute)
1 = Enable Path
LINEINL Signal to Right Mono Volume
000 = 0dB
… (3dB steps)
111 = -21dB
Right DAC to Mono Mixer
0 = Disable (Mute)
1 = Enable Path
LINEINR Signal to Mono Mixer
0 = Disable (Mute)
1 = Enable Path
LINEINR Signal to Mono Mixer Volume
000 = 0dB
… (3dB steps)
111 = -21dB
Note:
The mono mixer has half the gain of the left and right mixers (i.e. 6dB less), to ensure that the left
and right channels can be mixed to mono without clipping.
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PD Rev 4.2 March 2006
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