TDA7348

Software specification

17/20

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

Table 12.

Volume

MSB

LSB

Function

D7

D6

D5

D4

D3

D2

D1

D0

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