Truth Tables (Continued)
Right Volume Control
MSB
LSB
0
Level (dB)
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
20
0
0
0
0
1
18
. . .
1
. . .
1
. . .
1
. . .
0
. . .
0
. . .
−38
1
1
1
1
0
−40
1
1
1
1
1
Right Channel Mute
Right Channel Is Muted
Right Volume Control
Power Up State
1
1
1
1
1
Microphone Input Selection and Gain
MSB
LSB
0
Function
1
1
1
1
1
1
0
0
0
0
0
0
1
1
1
1
1
1
X
X
X
X
X
X
X
0
0
1
Mic Input 1
1
Mic Input 2
X
Mic Input 1 and 2
Mic Gain (+0 dB)
Mic Gain (+20 dB)
Mic Gain (+30 dB)
0
0
1
1
0
1
0
0
Mic Input Sel. and
Gain Power Up State
0
0
Mic 1 is selected
with a +30 dB gain
Microphone Volume Control
MSB
LSB
0
Function
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
18
0
0
0
0
1
15
. . .
1
. . .
0
. . .
1
. . .
0
. . .
0
. . .
−42
1
0
1
0
1
Microphone Muted
Microphone Muted
Mic Volume Control
Power Up State
1
0
1
0
1
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