AK1548 Datasheet, PDF (30/42 Pages) Asahi Kasei Microsystems – 8GHz Low Noise Integer-N Frequency Synthesizer

High
Positive
[AK1548]
Low
Low
Negative
Charge pump output voltage ^High
LD ： Selects output from [LD] pin
D4 D3 D2
0
01
1
01
Function
Digital lock detect
Analog lock detect
Remarks
CNTR_RST : Counter Reset
D0
0
1
Function
Normal operation
R and N counters are reset.
Remarks
< Address3 : Initialization >
This function is same as <Address2>.
When this register is accessed, the following occurs :
- Address2 is loaded.
- An internal pulse resets the R counter, N counter and {TIMER} settings to load-state conditions, and also
charge pump to Tri-state.
- Writing Address1 activates the R and N counter, {TIMER} and charge pump. {TIMER} is enabled when
{FAST}=”11Bin” and {CPGAIN}=“1”.
MS1364-E-00
30
2012/1