TDA7348D View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TDA7348D

Digitally controlled audio processor

STMicroelectronics 

TDA7348

4.3

Transmitted data

Table 6. Send mode

MSB

X

X

X

X

X

ZM = Zero crossing muted (HIGH active)

SM = Soft mute activated (HIGH active)

X = Not used

The transmitted data is automatically updated after each ACK.

Transmission can be repeated without new chip address.

Software specification

LSB

SM

ZM

X

4.4

Data byte specification

X = not relevant; set to "1" during testing

Table 7.

MSB

Input Selector

D7

D6

D5

D4

D3

D2

X

X

1

0

X

X

1

0

X

X

1

0

X

X

1

0

X

X

1

1

X

X

1

1

X

X

1

1

X

X

1

1

X

X

1

0

0

X

X

1

0

1

X

X

1

1

0

X

X

1

1

1

LSB

D1

D0

Function

0

0 not used

0

1 IN 2

1

0 IN 1

1

1 AM mono

0

0 not used

0

1 IN 3

1

0 not allowed

1

1 not allowed

11.25dB gain

7.5dB gain

3.75dB gain

0dB gain

For example to select the IN 2 input with a gain of 7.5dB the Data Byte is: X X 1 0 1 0 0 1

Table 8. Loudness

MSB

LSB

D7

D6

D5

D4

D3

D2

D1

D0

Function

X

X

X

1

0

0

0

0 0dB

X

X

X

1

0

0

0

1 -1.25dB

X

X

X

1

0

0

1

0 -2.5dB

13/20

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