AK8140A Datasheet, PDF (40/45 Pages) Asahi Kasei Microsystems – Programmable Clock Generator

AK8140A
●Address：32h～34h、36h～38h NDIV2 Dividing Value
*n=0/1
Address _D7
D6
D5
Data
D4
D3
32h
36h
NINTn[5] NINTn[4] NINTn[3] NINTn[2] NINTn[1]
33h
37h
NUMEn[6] NUMEn[5] NUMEn[4] NUMEn[3] NUMEn[2]
34h
38h
DENOn[7] DENOn[6] DENOn[5] DENOn[4] DENOn[3]
After writing register 34h, 32h～34h data settings are updated.
After writing register 38h, 36h～38h data settings are updated.
D2
NINTn[0]
NUMEn[1]
DENOn[2]
D1
NUMEn[8]
NUMEn[0]
DENOn[1]
D0
NUMEn[7]
DENOn[8]
DENOn[0]
NDIV2 Dividing Value （NINTn， NUMEn， DENOn）
NDIV2 dividing value can be set according to Frequency Setting Procedure on page 10.
NINTn[5:0] ： NDIV2 integral part settings
NINTn[5:0]
000000 ～
001111
010000
：
100011
100100
100101
：
111001
111010 ～
111111
*n=0/1
NDIV2 Integral Part
prohibited
16
：
35
36
37
：
57
prohibited
NUMEn[8:0] ： NDIV2 Numerator of fractional part setting
*n=0/1
NUMEn[8:0]
000000000
000000001
：
111111110
111111111
NDIV2 Numerator of
fractional part setting
0（fractional-part=0）
1
：
510
511
Sep -12
- 40 -
draft-E-06