TDA7342_06 Datasheet, PDF (17/20 Pages) STMicroelectronics – Digitally controlled audio processor

TDA7342
Software specification
Table 12. Volume
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
Function
0.31db fine attenuation steps
0
0
0db
0
1
-0.31db
1
0
-0.62db
1
1
-0.94db
1.25db coarse attenuation steps
0
0
0
0db
0
0
1
-1.25db
0
1
0
-2.5db
0
1
1
-3.75db
1
0
0
-5db
1
0
1
-6.25db
1
1
0
-7.5db
1
1
1
-8.75db
10db gain / attenuation steps
0
0
0
20db
0
0
1
10db
0
1
0
0db
0
1
1
-10db
1
0
0
-20db
1
0
1
-30db
1
1
0
-40db
1
1
1
-50db
For example to select -47.81dB Volume the Data Byte is: 1 1 0 1 1 0 0 1
Power on RESET: All Bytes Set to 1 1 1 1 1 1 1 0
NB. Purchase of I²C Components of STMicrolectronics, conveys a
license under the Philips I²C Patent Rights to use these
components in an I²C system, provided that the system conforms
to the I²C Standard Specifications as defined by Philips.
17/20