tda7421n STMicroelectronics, tda7421n Datasheet - Page 27

• Manufacturer Part Number: tda7421n
• Description: Am/fm Tuner For Car Radio And Hi-fi Applications
• Manufacturer: STMicroelectronics

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