TDA7405 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDA7405' PDF : 56 Pages View PDF
TDA7405
Table 37. Stereodecoder Configuration (30)
MSB
LSB
D7
D6
D5
D4
D3
D2
D1
D0
FUNCTION
Multipath Influence on High-Cut
0 On
1 Off
Multipath Influence on Stereo-Blend
0
On
1
Off
Level-Input over Multipath-Detector1
0
1
1 On
1
x
x Off
Dual MPX Mode
0
On
1
Off
Weak-Signal-Mute
0
on
1
off
WSMute Threshold
0
0.3 V
1
0.5V
WS-Mute-Depth
0
0
-20 dB
0
1
-24 dB
1
0
-28 dB
1
1
-32 dB
Note: 1. Using the Multipath Time-Constants for Stereo-Bland and High-Cut
Table 38. Testing Stereodecoder(31)
MSB
LSB
D7
D6
D5
D4
D3
D2
D1 D0
FUNCTION
Main Testmode
0 off
1 on
Stereodecoder Testmode
0
off
1
on
Testsignals
0
0
0
0
F228
0
0
0
1
NB threshold
0
0
1
0
Level for Stereo-Blend
0
0
1
1
Pilot magnitude
0
1
0
0
VHCCL
0
1
0
1
Pilot threshold
0
1
1
0
VHCCH
0
1
1
1
REF5V
1
0
0
0
HOLDN
1
0
0
1
NB Peak
1
0
1
0
AM-Rectifier
1
0
1
1
VCOCON; VCO Control Voltage
1
1
0
0
VSBL
1
1
0
1
Pilot threshold
1
1
1
0
Level for High-Cut
1
1
1
1
REF5V
Audioprocessor Oscillator
0
Off
1
On
Disable Noiseblanker @ FS > 2.5V
0
On
1
Off
Note : This byte is used for testing or evaluation purposes only and must not set to other values than "11111100" in the application
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