TDA7514 STMicroelectronics, TDA7514 Datasheet - Page 38

• Manufacturer Part Number: TDA7514
• Description: SINGLE-CHIP FM/AM TUNER
• Manufacturer: STMicroelectronics

www.DataSheet4U.com
TDA7514
Table 30. SUBADDRESS 15: Quality detection: gain and offset on FSmeter (SNC), multipath
Table 31. SUBADDRESS 16: Quality Detection: Adjacent channel detector, HCC source, Quality
38/74
MSB
D7
MSB
0
1
D7
0
1
-
D6
0
1
detector rectifier gain
fast test, Quality AF check, ISS filter test
D6
0
1
-
D5
0
1
D5
D4
0
1
-
0
1
D3
0
1
D4
0
1
D2
0
1
D3
0
1
-
D1
0
0
1
1
LSB
D2
D0
0
1
-
0
1
0
1
12 dB
17.3 dB
18.4 dB
20 dB
SNC
FSmeter
Test mode off
Test mode on filt Smeter tau = 100 us
AF check off
AF check on
1 s
10 ms
ISS filter input
ISS filter clock enable
D1
Qual adjacent channel detector rectifier gain
0
1
-
Quality filters AF check freeze mode
Quality filters fast test mode
LSB
D0
Smeter filter time constant
0
1
-
High cut control source
SNC filt internal 22 pF
filt Smeter tau = 100 us
60ms/1s Smeter filt freeze
MPath filt for StBlend freeze
USN filt for StBlend/AdjChMute freeze
std
filter in connected to Smeter test MUXer
clock off (test mode)
clock on (std)
ISS filter test
0 dB
(step = 0.15)
2.25 dB
1.8 V
2.4 V
5 dB
(step = 1.2dB)
+13.4 dB
Multipath detector rectifier gain
FUNCTION
FSmeter offset (SNC)
FSmeter gain (SNC)
FUNCTION