TDA7404D datasheet(17/26 Pages) STMICROELECTRONICS

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TDA7404D

2.3 Reset Condition

A Power-On-Reset is invoked if the Supply-Voltage is below than 3.5V. After that the following data is written

automatically into the registers of all subaddresses :

The programming after POR is marked bold-face / underlined in the programming tables.

With this programming all the outputs are muted to VREF (VOUT= VDD/2).

Note : All the blank bits in the following tables are "don't care"-bits.

2.4 SUBADDRESS (receive mode)

1 For more information see Soft Mute-section

2 For more information see AutoZero-section

3 For more information see Test Programming block

4 If this bit is set to "1", the subaddress is automatically incremented after the transmission of a data-byte.

Therefore a transmission of more than one byte without sending the new subaddress is possible.

MSB

LSB

MSB

LSB

FUNCTION

Zero cross / Soft Mute 1

Zero Cross available

Soft Mute available

AutoZero Remain 2

off

Testmode 3

off

Auto-Increment Mode 4

off

Input Selector / Gain

Loudness

Volume

Treble

Bass

Speaker attenuator LF / Bass Fc select

Speaker attenuator RF

Speaker attenuator LR

Speaker attenuator RR

Subwoofer attenuator LSW

Subwoofer attenuator RSW

SoftMute / Mixing

Others selection

Testing

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