TDA7407D STMicroelectronics, TDA7407D Datasheet - Page 22

• Manufacturer Part Number: TDA7407D
• Description: IC PROCESSOR ADV SIGNAL 44-LQFP
• Manufacturer: STMicroelectronics
• Type: Car Signal Processorr

Specifications of TDA7407D

• Applications: Automotive Systems
• Mounting Type: Surface Mount
• Package / Case: 44-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Multipath detector
5.1.6
Note:
5.1.7
22/46
Softmute
The digitally controlled softmute stage allows muting/demuting the signal with a I
programmable slope. The mute process can either be activated by the softmute pin or by the
I
regions.
Figure 7.
Figure 8.
Please notice that a started Mute action is always terminated and could not be interrupted
by a change of the mute signal.
For timing purposes the Bit 3 of the I
until the end of demuting.
BASS
There are four parameters programmable in the bass stage: (see figs 9, 10, 11, 12):
2
C bus. The slope is realized in a special S shaped curve to mute slow in the critical
Input stages
Softmute timing
CASSETTE
PHONE+
PHONE-
MPX
AM
CD+
CD-
100K
100K
+SIGNAL
-SIGNAL
I
2
MUTE
C BUS
EXT.
OUT
100K
100K
100K
REF
1
1
1
1
2
C bus output register is set to 1 from the start of muting
STEREO DECODER
15K
27K
15K
27K
+
+
-
15K
-
28K
15K
28K
D97AU634
D98AU854A
Time
CD OUT
IN GAIN
2
C bus
TDA7407