[AK1541]
< Address 3: Div >
D19 D18 D17 D16
D15
D14
D[13:12]
D11
D10
D[9:8]
D[7:0] Addres
R[7:0] 0011
0
0
0
0
CPHI
DITH
LDCKSEL[1:0]
LD
CPPOLA
PRE[1:0]
CPHIZ: Selects normal or TRI-STATE for the CP1/CP2 output.
D15
0
Function
Charge pumps are activated.
TRI-STATE
Remarks
Use this setting for normal operation.
Note 1)
1
Note 1) The charge pump output is put in the high-impedance (Hi-Z) state.
DITH: Selects dithering ON or OFF for a delta-sigma circuit.
D14
0
Function
Remarks
DITH OFF
DITH ON
1
Recommended
It is used to control the turning On or Off dithering to cancel cyclical noise.
In normal operation, ”1”= DITH ON is recommended.
LDCKSEL[1:0] : Sets a phase error value for lock detect.
D13 D12
Function
1 cycle of the REFIN clock
2 cycles of the REFIN clock
3 cycles of the REFIN clock
Prohibited
Remarks
0
0
1
1
0
1
0
1
For detailed functional descriptions, see the section “Lock Detect (LD) Signal” in “8. Block Functional
Description”.
LD: Selects analog or digital for the lock detect.
D11
0
Function
Digital Lock Detect
Analog Lock Detect
Remarks
1
For detailed functional descriptions, see the section “Lock Detect (LD) Signal” in “8. Block Functional
Description”.
MS1043-E-05
21
2013/03
AKM [ ASAHI KASEI MICROSYSTEMS ]
