Toshiba TC9314F Manual page 23

3. IF Correction Function for FM Band
When the pulse swallow method is selected, the IF
without changing the programmed divisor. This can be used for IF offset in FM.
When the direct division method is selected, the IF offset function does not operate.
IF 1 IF 1
0 0
0 1
1 0
1 1
4. Setting Divisor
Set the divisor of the programmable counter as a binary value in bits P0~P15.
Pulse swallow method (16 bits)
Direct division method (12 bits)
Note 25: In FM mode, the divisor is double the programmed divisor.
H
5. Programmable Counter Circuit Structure
Pulse swallow method circuit structure
The programmable counter circuit is made up of a 1/15 or 1/16 2-modulus prescaler, a 4 bit swallow
counter, and a 12 bit binary programmable counter. In FM
prescaler.
Divisor (at FM )
H
2 n
2 (n 1)
2 (n 1)
Prohibited
23
1 ports allow the actual divisor to be varied by 1
Divisor (at FM , HF)
L
n
n 1
n 1
Prohibited
mode, a 1/2 divider is inserted before the
H
TC9314F
2003-07-03