National Semiconductor LM4681, User Manual, Page: 11 / 13

Appendix A LM4681 I
2
C/SPI Control Register
Table A1 shows the actions that are implemented by manipulating the bits within the two internal I
2
C control registers.
Table A1. LM4681 I
2
C/SPI Control Register Addressing and Data Format Chart
B7 B6 B5 B4 B3 B2 B1 B0
I
2
C
Address
1 1 0 1 1 0 ADR 0
Mode
Control
Register
0 X 0 X X X
0
Mute
Active
0
Shutdown
Active
Volume
Control
Register
(See
Table 4 )
1 0 0 V4 V3 V2 V1 V0
AN-1488
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