AK1542A Datasheet, PDF (22/37 Pages) Asahi Kasei Microsystems – 20 to 600MHz Integer-N Frequency Synthesizer

[AK1542A]
< Address3 : Ref/Pres >
D19 D18 D17 D16 D[15:14]
0 0 0 0 PRE[1:0]
D[13:0]
R[13:0]
Address
0011
PRE[1:0] : Prescaler division ratio (8/9, 16/17, 32/33)
The following settings can be chosen for the prescaler division.
D15 D14
Function
Remarks
0 0 8/9 (P=8)
0 1 16/17 (P=16)
1 0 32/33 (P=32)
1 1 Prohibited
R[13:0]: Reference clock division number
The following settings can be chosen for the reference clock division.
The allowed range is 4 (1/4 division) to 16383 (1/16383 division).
0 to 3 cannot be set.
D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
0 0 0 0 0 0 0 0 0 0 0 0 00
0 0 0 0 0 0 0 0 0 0 0 0 01
0 0 0 0 0 0 0 0 0 0 0 0 10
0 0 0 0 0 0 0 0 0 0 0 0 11
0 0 0 0 0 0 0 0 0 0 0 1 00
Function
0
1/1 division
1/2 division
1/3 division
1/4 division
Remarks
Prohibited
Prohibited
Prohibited
Prohibited
DATA
1 1 1 1 1 1 1 1 1 1 1 1 01
1 1 1 1 1 1 1 1 1 1 1 1 10
1 1 1 1 1 1 1 1 1 1 1 1 11
1/16381
division
1/16382
division
1/16383
division
MS1399-E-00
- 22 -
2012/3