AK1544 Datasheet, PDF (23/37 Pages) Asahi Kasei Microsystems – 1300MHz Integer-N Frequency Synthesizer

[AK1544]
< Address 4: Function >
D19 D18
D17
D16
D15
0
LDCNT LDCNT
SEL[1] SEL[0]
FAST
EN
CP
HiZ
D14 D13
CP
POLA
LD
D[12:0]
FAST[12:0]
LDCNTSEL[1:0] : Counter value for lock detect
The counter value for digital lock detect can be set.
D18 D17
Function
0 0 Counter value = 7
0 1 Counter value = 15
1 0 Counter value = 31
1 1 Counter value = 63
Remarks
Address
0100
FASTEN : The Fast Lockup mode enable/disable setting
The Fast Lockup mode can be enabled or disabled.
D16
Function
0 The data in CP2[3:0] and FAST[12:0] are disabled.
1 The data in CP2[3:0] and FAST[12:0] are enabled.
Remarks
CPHIZ: TRI-STATE output setting for charge pumps 1 and 2
D15
Function
0 Charge pumps are activated.
1 TRI-STATE
Remarks
Use this setting for normal
operation.
Note 1)
Note 1) The charge pump output is turned OFF and put in the high-impedance (Hi-Z) state.
MS1350-E-01
23
2013/03