tda7421n STMicroelectronics, tda7421n Datasheet - Page 28

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

TDA7421N
6.8 IF COUNTER REFERENCE CONTROL 2 (MSB) AND IF COUNTER MODE SELECT
fosc/ftim = LSB + MSB + 1
6.9 IF COUNTER CONTROL 1
28/38
IFCM1
IFENA
MSB
MSB
D7
D7
0
0
0
0
0
1
1
0
1
IFCM0
D6
D6
0
0
0
0
1
0
1
IRC13
D5
D5
0
0
0
1
1
1
all combinations allowed
IRC12
D4
D4
0
0
0
1
1
1
IRC11
D3
D3
0
0
0
1
1
1
IRC10
EW2
D2
D2
0
0
0
1
1
1
0
0
0
0
1
1
1
1
IRC9
EW1
D1
D1
0
0
1
0
1
1
0
0
1
1
0
0
1
1
IRC8
EW0
LSB
LSB
D0
D0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
MSB = 0
MSB = 256
MSB = 512
MSB = 15616
MSB = 15872
MSB = 16128
NOT USED IN APPLICATION MODE
IF counter FM mode
IF counter AM mode
not used
Bit name
don't use
don't use
don't use
EW delta f = ±6.25KHz (FM); ±1KHz (AM)
EW delta f = ±12.5KHz (FM); ±2KHz (AM)
EW delta f = ±25KHz (FM); ±4KHz (AM)
EW delta f = ±50KHz (FM); ±8KHz (AM)
EW delta f = ±100KHz (FM); ±16KHz (AM)
IF counter disabled / stand by
IF counter enabled
Bit name
FUNCTION
FUNCTION
Subaddress = 07H
Subaddress = 08H