TDA7404D Datasheet, PDF (17/26 Pages) STMicroelectronics – CARRADIO-SIGNAL-PROCESSOR

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 :
MSB
1
1
1
1
1
LSB
1
1
0
The programming after POR is marked bold-face / underlined in the programming tables.
With this programming all the outputs are muted to V_REF (V_OUT= V_DD/2).
Note : All the blank bits in the following tables are "don't care"-bits.
2.4 SUBADDRESS (receive mode)
MSB
LSB
I₃
I₂
I₁
I₀
A₃
A₂
A₁
A₀
FUNCTION
Zero cross / Soft Mute ¹
0
Zero Cross available
1
Soft Mute available
AutoZero Remain ²
0
off
1
on
Testmode ³
0
off
1
on
Auto-Increment Mode ⁴
0
off
1
on
0
0
0
0 Input Selector / Gain
0
0
0
1 Loudness
0
0
1
0 Volume
0
0
1
1 Treble
0
1
0
0 Bass
0
1
0
1 Speaker attenuator LF / Bass Fc select
0
1
1
0 Speaker attenuator RF
0
1
1
1 Speaker attenuator LR
1
0
0
0 Speaker attenuator RR
1
0
0
1 Subwoofer attenuator LSW
1
0
1
0 Subwoofer attenuator RSW
1
0
1
1 SoftMute / Mixing
1
1
0
0 Others selection
1
1
0
1 Testing
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.
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