TDA7513T_07 Datasheet, PDF (60/84 Pages) STMicroelectronics – Single chip FM/AM tuner with stereo decoder and audio processor

Software specifications
TDA7513T
Table 50. Subaddress 16: Quality detection deviation (continued)
MSB
LSB
Function
D7 D6 D5 D4 D3 D2 D1 D0
1
0
1
1
0
1
DEV Threshold for ISS filter OFF ratio 1.4
DEV Threshold for ISS filter OFF ratio 1.5
not used
AUX set int80
Table 51. Subaddress 17: Quality ISS filter
MSB
LSB Function Function Function Function
D7 D6 D5 D4 D3 D2 D1 D0
ISS automatic control fron AC detector
0 ON (AC drives ISSTC)
1 OFF (AC has no influence on ISSTC)
ISS manual control
0
1
0
1
automatic control only
manual force filter ON
manual force BW 120KHz
manual force BW 80KHz
ISS time constant
000
001
010
100
111
current: discharge chrg mid
1μA
3μA
5μA
9μA
15μA
74μA
72μA
70μA
66μA
60μA
chrg
narrow
124μA
122μA
120μA
116μA
110μA
00
01
10
11
ISS filter center frequency
shift from 450kHz
-20KHz
-10KHz
0KHz
10KHz
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