TDA7541 Datasheet, PDF (48/76 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system

Software specification
Table 17. Addr 1 TPLL Counter 1 (LSB)
MSB
LSB
d7 d6 d5 d4 d3 d2 d1 d0
PC<7:0>
0 0 0 0 0 0 0 0 LSB = 0
0 0 0 0 0 0 0 1 LSB = 1
0 0 0 0 0 0 1 0 LSB = 2
-
-
-
-
-
-
-
--
1 1 1 1 1 1 0 0 LSB = 252
1 1 1 1 1 1 0 1 LSB = 253
1 1 1 1 1 1 1 0 LSB = 254
1 1 1 1 1 1 1 1 LSB = 255
Function
Table 18. Addr 2 TPLL Counter 2 (MSB)
MSB
LSB
d7 d6 d5 d4 d3 d2 d1 d0
PC<15:8>
0 0 0 0 0 0 0 0 MSB = 0
0 0 0 0 0 0 0 1 MSB = 256
0 0 0 0 0 0 1 0 MSB = 512
-
--
----
--
1 1 1 1 1 1 0 0 MSB = 64768
1 1 1 1 1 1 0 1 MSB = 65024
1 1 1 1 1 1 1 0 MSB = 65280
1 1 1 1 1 1 1 1 MSB = 65536
Note:
Swallow mode: fVCO/fSYN = LSB + MSB + 32
Function
Table 19. Addr 3 TV(00h)
MSB
LSB
d7 d6 d5 d4 d3 d2 d1 d0
Function
TVO<7:0>
000000
0 Tuning Voltage Offset = 0mV
000000
1 TVO = 25mV
000001
0 TVO = 50mV
-
-
-
-
-
-
-
--
111111
0 TVO = 3150mV
111111
1 TVO = 3175mV
0
-TVO
1
+TVO
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TDA7541