Truth Tables
SOFTWARE SPECIFICATION
Chip Address
MSB
LSB
1
0
0
0
0
*E.C.
*E.C.
0
*E.C. = Externally Configuarable
Data Bytes (Brief Description)
MSB
LSB
D0
Function
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
X
X
D2
D2
D2
D2
D2
D10
D2
D20
D1
D1
D1
D1
D1
D01
D1
D10
Input Volume Control
Bass Control
X
D3
D3
D3
D3
D11
D3
D30
D0
X
D0
Treble Control
D4
D4
X
D0
Right Output Vol./Mute
Left Output Vol./Mute
Mic Input and Gain
Microphone Volume
General Control
D0
D00
D0
D4
D40
D00
Input Volume Control
MSB
LSB
0
Attenuation (dB)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
0
0
1
1
1
1
0
0
0
1
1
0
0
1
1
0
0
1
−2
0
−4
1
−6
0
−8
1
−10
−12
−14
0
1
Input Volume Control
Power Up State
0
Input Volume Control
at 0 dB Attenuation
Bass Control
MSB
LSB
0
Level (dB)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
0
0
0
0
0
0
1
1
1
1
1
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
−12
1
−10
0
−8
1
−6
0
−4
1
−2
0
0
1
2
0
4
1
6
0
8
1
10
0
12
Bass Control
0
Bass Control is Flat
Power Up State
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