E-TDA7514 View Datasheet(PDF) - STMicroelectronics
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E-TDA7514 Datasheet PDF : 74 Pages
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TDA7514
Table 30. SUBADDRESS 15: Quality detection: gain and offset on FSmeter (SNC), multipath
detector rectifier gain
MSB
LSB
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
FSmeter gain (SNC)
0
0
0
0 0 dB
-
-
-
- (step = 0.15)
1
1
1
1 2.25 dB
FSmeter offset (SNC)
0
1.8 V
1
2.4 V
Multipath detector rectifier gain
0
0
0
5 dB
-
-
-
(step = 1.2dB)
1
1
1
+13.4 dB
Table 31. SUBADDRESS 16: Quality Detection: Adjacent channel detector, HCC source, Quality
fast test, Quality AF check, ISS filter test
MSB
LSB
FUNCTION
D7 D6 D5 D4 D3 D2 D1 D0
Qual adjacent channel detector rectifier gain
0
0 12 dB
0
1 17.3 dB
1
0 18.4 dB
1
1 20 dB
High cut control source
0
SNC
1
FSmeter
Quality filters fast test mode
0
Test mode off
1
Test mode on filt Smeter tau = 100 us
SNC filt internal 22 pF
Quality filters AF check freeze mode
0
AF check off
1
AF check on filt Smeter tau = 100 us
60ms/1s Smeter filt freeze
MPath filt for StBlend freeze
USN filt for StBlend/AdjChMute freeze
Smeter filter time constant
0
1s
1
10 ms
ISS filter test
ISS filter input
0
std
1
filter in connected to Smeter test MUXer
ISS filter clock enable
0
clock off (test mode)
1
clock on (std)
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