TDA7427 ST Microelectronics, TDA7427 Datasheet - Page 15

• Manufacturer Part Number: TDA7427
• Description: AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER
• Manufacturer: ST Microelectronics

LOCK DETECTOR & PLL MODE CONTROL
IF COUNTER REFERENCE CONTROL 1 (LSB)
LDENA INLOCK
MSB
MSB
IRC7
D7
D7
0
1
0
0
0
1
1
1
1
IRC6
D6
D6
0
1
0
0
0
1
1
1
1
IRC5
D5
D3
D5
0
0
1
1
0
0
0
1
1
1
1
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
LSB
PM0
LSB
D0
D0
0
1
0
1
0
1
0
0
1
0
1
PLL standby mode
PLL AM swallow mode
PLL AM direct mode
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 fref
Activation delay = 6 fref
Activation delay = 8 fref
Digital output 1 at pin ”dout1/inlock”
Inlock information at pin ”dout1/inlock”
No lock detector controlled chargepump
Lock detector controlled chargepump
Bit name
LSB = 0
LSB = 1
LSB = 2
LSB = 252
LSB = 253
LSB = 254
LSB = 255
Bit name
FUNCTION
FUNCTION
Subaddress = 05H
Subaddress = 06H
TDA7427
15/21