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TDA7512 Datasheet, PDF (26/42 Pages) STMicroelectronics – AM/FM CAR RADIO TUNER IC WITH INTELLIGENT SELECTIVITY SYSTEM ISS
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TDA7512
2.3.5 Addr 5 IF Counter Control 1
Table 13.
MSB
LSB
d7 d6 d5 d4 d3 d2 d1 d0
Function
0
0
0 tSample = 20.48ms (FM)128ms (AM )
0
0
1 tSample = 10.24ms (FM)64ms (AM )
0
1
0 tSample = 5.12ms (FM)32ms (AM )
0
1
1 tSample = 2.56ms (FM)16ms (AM )
1
0
0 tSample = 1.28ms (FM)8ms (AM )
1
0
1 tSample = 640µs (FM)4ms (AM )
1
1
0 tSample = 320µs (FM)2ms (AM)
1
1
1 tSample = 160µs (FM)1ms (AM )
0
IF counter disable / stand by
1
IF counter enable
00
Not valid
01
IF counter FM mode
10
IF counter AM mode (450KHz)
11
IF counter AM mode (10.7MHz)
0
Disable mute & AGC on hold in FM mode
1
Enable mute & AGC on hold in FM mode
0
Disable local mode
1
Enable local mode (PIN diode current = 0.5mA) “ON”
2.3.6 Addr 6 IF Counter Control 2
Table 14.
MSB
LSB
d7 d6 d5 d4 d3 d2 d1 d0
Function
0
0
0
0
0 fCenter = 10.60625MHz (FM) / 10.689MHz ; 449KHz (AM)
0
0
0
0
1 fCenter = 10.61250MHz (FM) / 10.690MHz ; 450KHz (AM)
-
-
-
-
-
-
-
--
0
1
0
1
1 fCenter = 10.67500MHz (FM) / 10.700MHz ; 460KHz (AM)
0
1
1
0
0 fCenter = 10.68125MHz (FM) / 10.701MHz ; 461KHz (AM)
0
1
1
0
1 fCenter = 10.68750MHz (FM) / 10.702MHz ; 462KHz (AM)
0
1
1
1
0 fCenter = 10.69375MHz (FM) / 10.703MHz ; 463KHz (AM)
0
1
1
1
1 fCenter = 10.70000MHz (FM) / 10.704MHz ; 464KHz(AM)
-
-
-
-
-
-
-
--
1
1
1
1
1 fCenter = 10.80000MHz (FM) / 10.720MHz ;480KHz (AM)
000
Not valid
001
Not valid
010
Not valid
011
∆f = 6.25kHz (FM)1kHz (AM)
100
∆f = 12.5kHz (FM) 2kHz (AM)
101
∆f = 25kHz (FM) 4kHz (AM)
110
∆f = 50kHz (FM) 8kHz (AM)
111
∆f = 100kHz (FM)16kHz (AM)
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