AK8140A Datasheet, PDF (34/45 Pages) Asahi Kasei Microsystems – Programmable Clock Generator

AK8140A
FRACn [17:0]
01 1111 1111 1111 1111
01 1111 1111 1111 1110
01 0000 0000 0000 0000
00 0000 0000 0000 0001
00 0000 0000 0000 0000
11 1111 1111 1111 1111
11 1111 1111 1111 1110
11 0000 0000 0000 0000
10 0000 0000 0000 0001
10 0000 0000 0000 0000
A
+131071
+131070
+65536
+1
0
-1
-2
-65536
-131071
-131072
Fractional Part
0.49999619..
0.25
0.00000381..
0
-0.00000381..
-0.25
-0.49999619..
-0.5
●Address：25h/2Ah
Address
D7
25h
2Ah
－
NDIV1 integral part settings
Data
D6
D5
D4
D3
INTn[6]
INTn[5]
INTn[4]
INTn[3]
D2
INTn[2]
D1
INTn[1]
*n=0/1
D0
INTn[0]
INTn [6:0] ： NDIV1 integral part settings
n=0/1
NDIV1 Integral part can be set according to Frequency Setting Procedure on page 10.
* Do not set any value except ”17”～”68”
INTn [6:0]
000 0000～001 0000
001 0001
001 0010
100 0011
100 0100
100 0101～111 1111
integral part
Prohibited
17
18
67
68
-*1
Sep -12
- 34 -
draft-E-06