AK1541_17 Datasheet, PDF (23/37 Pages) Asahi Kasei Microsystems – 20 to 600Mhz Delta-Sigma Fractional-N Frequency Synthesizer

[AK1541]
PRE[1:0] : Selects a dividing ratio for the prescaler.
D9 D8
0 0 P=4
0 1 P=8
1 0 P=16
1 1 P=16
Function
Remarks
R[7:0]: Sets a dividing ratio for the reference clock.
This can be set in the range from 4 (4 divisions) to 255 (255 divisions). 0, 1, 2 or 3 cannot be set.
D7 D6 D5 D4 D3 D2 D1 D0 Function
Remarks
00000000
0
Prohibited
00000001
1
Prohibited
00000010
2
Prohibited
00000011
3
Prohibited
DATA
11111101
253
11111110
254
11111111
255
MS1043-E-05
23
2013/03