PRELIMINARY

                 

Phase Detector Polarity

Depending upon VCO characteristics, R16 bit should be

set accordingly:

When VCO characteristics are positive like (1), R16

should be set HIGH; When VCO characteristics are

negative like (2), R16 should be set LOW.
















Serial Data Input Timing

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()
*

(+

(+

)

,-.









,(-.

,-.









,(-.



NOTES:

1. Parenthesis data indicates programmable reference divider data.

2. Data shifted into register on clock rising edge.

3. Data is shifted in MSB first.

Test Conditions: The Serial Data Input Timing is tested using a symmetrical waveform around V

has an edge rate of 0.6V/ns with amplitudes of 2.2V at V

Phase Comparator and Internal Charge Pump Characteristics

(













NOTES:

1. Phase difference detection range: -2

to +2

2. The minimum width pump up and pump down current pulse occur at the D

3. R16 = HIGH