TDA7404 查看數據表（PDF） - STMicroelectronics

零件编号

产品描述 (功能)

生产厂家

TDA7404

Car radio signal processor

STMicroelectronics 

TDA7404

I2C bus interface

Table 19. Others

MSB

LSB

D7 D6 D5 D4 D3 D2 D1 D0

Function

AC coupling

X

0 Internal pass

0

1 Coupling between Mixing Stage and Volume

1

1

Coupling between Bass filter and Speaker

attenuator

1

1

00

01

10

11

Must be "1" for make up

Must be "1" for make up

Soft Step Time

0.68ms

1.26ms

2.52ms

5.04ms

1

0

1

Must be "1" for AutoZero

Internal Beep

Off

ON

Table 20. Testing

MSB

LSB

D7

D6

D5

D4

D3

D2

D1

D0

Function

X

X

X

X

X

X

Main-Testmode

0 off

1 on

X

X

X

X

X

X

Test-Multiplexer

0

internal 200kHz Clock

1

internal Bandgap Voltage

X

X

X

0

X

X

X

1

Clock

external

internal

1

1

must be "1"

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