TDA7405 Datasheet, PDF (46/56 Pages) STMicroelectronics – EQUALIZER CARRADIO SIGNAL PROCESSOR

TDA7405
Table 17. EQ-Configuration / Bass (10)
MSB
D₇ D₆ D₅ D₄ D₃ D₂ D₁
0
0
1
1
0
0
0
1
1
0
1
1
0
1
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
LSB
D₀
0
1
0
1
FUNCTION
EQ Filter Rear Path
no Filter
High-Filter
Low-Filter
High+Low-Filter
EQ Filter Front Path
no Filter
High-Filter
Low-Filter
High+Low-Filter
AM Noisebl. SoftUnMute
On
Off
Bass Center-Frequency
60Hz
80Hz
70Hz
90Hz
100Hz
130Hz
150Hz
200Hz
Table 18. Compander (11)
MSB
LSB
D₇ D₆ D₅ D₄ D₃ D₂ D₁ D₀
FUNCTION
Activity / Reference Level
0
0 off
0
1 0.5V_RMS
1
0 1V_RMS
1
1 _2VRMS
0
0
0
1
1
0
1
1
Attack-Times
6ms
12ms
24ms
49ms
0
0
0
1
1
0
1
1
Release-Times
390ms
780ms
1.17s
1.56s
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
SoftStep-Time¹⁾
160µs
320µs
640µs
1.28ms
2.56ms
5.12ms
10.2ms
20.4ms
Compander max. Gain
0
29dB
1
19dB
Note: 1. The SoftStep-Times are only programmable while the Compander is not used.
46/56