E-TDA7404D STMicroelectronics, E-TDA7404D Datasheet - Page 16

• Manufacturer Part Number: E-TDA7404D
• Description: IC PROCESSOR CAR SIGNAL 28SOIC
• Manufacturer: STMicroelectronics
• Type: Car Signal Processorr

Specifications of E-TDA7404D

• Applications: Automotive Systems
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Description of functionality
4.4.3
4.5
16/35
Low and high frequency boost
Figure 7
Figure 7.
Soft-mute
The digitally controlled soft-mute stage allows muting/demuting the signal with a I
programmable slope. The mute process can either be activated by the Mute pin or by the
I
regions
For timing purposes the Bit 0 of the I
muting until the end of de-muting.
Figure 8.
1. Please notice that a started Mute-action is always terminated and could not be interrupted by a change of
2
C bus. This slope is realized in a special S-shaped curve to mute slow in the critical
the mute -signal.
(seeFigure
shows the different Loudness-shapes in low & high frequency boost.
Loudness attenuation, f
Soft-mute timing
- 1 0
- 1 5
- 2 0
- 5
5
0
1 0
6).
1 0 0
2
C bus output register is set to 1 from the start of
C
= 2.4 kHz
1 K
1 0 K
2
TDA7404
C bus