TDA7348D View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TDA7348D

Digitally controlled audio processor

STMicroelectronics 

Software specification

TDA7348

Table 8. Loudness (continued)

MSB

LSB

D7

D6

D5

D4

D3

D2

D1

D0

Function

X

X

X

1

0

0

1

1 -3.75dB

X

X

X

1

0

1

0

0 -5dB

X

X

X

1

0

1

0

1 -6.25dB

X

X

X

1

0

1

1

0 -7.5dB

X

X

X

1

0

1

1

1 -8.75dB

X

X

X

1

1

0

0

0 -10dB

X

X

X

1

1

0

0

1 -11.25dB

X

X

X

1

1

0

1

0 -12.5dB

X

X

X

1

1

0

1

1 -13.75dB

X

X

X

1

1

1

0

0 -15dB

X

X

X

1

1

1

0

1 -16.25dB

X

X

X

1

1

1

1

0 -17.5dB

X

X

X

1

1

1

1

1 -18.75dB

For example to select -17.5dB attenuation, loudness OFF, the Data Byte is: X X X1 1 1 1 0

Table 9. Mute

MSB

LSB

D7 D6 D5 D4 D3 D2 D1 D0

Function

1 Soft mute on

0

1 Soft mute with fast slope (I = IMAX)

1

1 Soft mute with slow slope (I = IMIN)

1

0

1

Direct mute

Zero crossing mute on

0

0

Zero crossing mute off

(delayed until next zerocrossing)

1

Zero crossing mute and pause detector

reset

0

0

160mV ZC window threshold (WIN = 00)

0

1

80mV ZC window threshold (WIN = 01)

1

0

1

1

40mV ZC window threshold (WIN = 10)

20mV ZC window threshold (WIN = 11)

0

Non-symmetrical Bass Cut

1

Symmetrical Bass Cut

14/20

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