AK1544 Datasheet, PDF (18/37 Pages) Asahi Kasei Microsystems – 1300MHz Integer-N Frequency Synthesizer

[AK1544]
9. Register Map
Name
A/B
CP
Ref/Pres
Function
GPO
Data
D19 to D0
Address
0001
0010
0011
0100
0101
D19 D18 D17 D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Address
A/B
0
B
[12]
B
[11]
BB
[10] [9]
B
[8]
B
[7]
B
[6]
B
[5]
B
[4]
B
[3]
B
[2]
B
[1]
B
[0]
A
[5]
A
[4]
A
[3]
A
[2]
A
[1]
A
[0]
0x01
CP
0
0
0
0
0
0
0
0
0
0
CP2 CP2 CP2 CP2
[3] [2] [1] [0]
0
0
CP1 CP1 CP1 CP1
[3] [2] [1] [0]
0x02
Ref/Pres ⁰
0
0
0
PRE PRE R R R R
[1] [0] [13] [12] [11] [10]
R
[9]
R
[8]
R
[7]
R
[6]
R
[5]
R
[4]
R
[3]
R
[2]
R
[1]
R
[0]
0x03
Function
0
LDCNT
SEL[1]
LDCNT
SEL[0]
FAST
EN
CP CP
HiZ POLA
LD
FAST FAST FAST FAST FAST FAST FAST FAST FAST FAST FAST FAST FAST
[12] [11] [10] [9] [8] [7] [6] [5] [4] [3] [2] [1] [0]
0x04
GPO
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
GPO GPO
2
1
0x05
Note 1) The data in Addresses 0x02 and 0x03 are committed to all related circuits when address 0x01 is written, which
means that the data of these 3 Addresses (0x01, 0x02 and 0x03) are committed to all related circuits at a time.
Note 2) Addresses 0x04 and 0x05 could be written separately from other Addresses.
Note 3) The initial register values are not defined. Therefore, even after [PDN1] is set to “High”, each bit value remains
undefined. In order to set all register values, it is required to write the data in all Addresses of the register.
MS1350-E-01
18
2013/03