PHASE DETECTOR POLARITY

Depending upon VCO characteristics, R16 bit should be set

accordingly: (see figure right)

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

PHASE COMPARATOR AND INTERNAL CHARGE PUMP CHARACTERISTICS

VCO Characteristics

DS012331-16

DS012331-17

Notes: Parenthesis data indicates programmable reference divider data.

Data shifted into register on clock rising edge.

Data is shifted in MSB first.

DS012331-18

Notes: Phase difference detection range: −2

π to +2π

R16 = HIGH

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