TDA7421N Datasheet, PDF (27/38 Pages) STMicroelectronics – AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS

TDA7421N
6.6 LOCK DETECTOR & PLL MODE CONTROL
MSB
D7
D6
D5
D4
D3
D2
D1
0
0
1
1
0
0
0
1
1
0
1
1
0
0
0
1
1
0
1
1
0
1
LDENA
D3
D2
D1
D0 PM1
LSB
FUNCTION
D0
0 PLL standby mode
1 PLL AM
0 not used
1 PLL FM mode
PD phase difference threshold 10ns
PD phase difference threshold 20ns
PD phase difference threshold 30ns
PD phase difference threshold 40ns
Not used in application mode
Activation delay = 4 · f_ref
Activation delay = 6 · f_ref
Activation delay = 8 · f_ref
No lock detector controlled chargepump
Lock detector controlled chargepump
PM0 Bit name
Subaddress = 05H
6.7 IF COUNTER REFERENCE CONTROL 1 (LSB)
MSB
D7
D6
D5
D4
D3
D2
D1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
all combinations allowed
1
1
1
1
1
1
0
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
IRC7 IRC6 IRC5 IRC4 IRC3 IRC2 IRC1
LSB
D0
0 LSB = 0
1 LSB = 1
0 LSB = 2
FUNCTION
0 LSB = 252
1 LSB = 253
0 LSB = 254
1 LSB = 255
IRC0 Bit name Subaddress = 06H
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