MB1507

6

NOTES: Parenthesis data is used for setting divide ratio of programmable reference divider.

On rising edge of clock shifts one bit of data into the shift register.

SERIAL DATA INPUT TIMING

Data

Clock

LE

S19=MSB

*(SW)

(S14)

S18

S11

(S7)

(S6)

S10

(S1)

S1=LSB

(C: CONTROL BIT)

C: CONTROL BIT

PHASE CHARACTERISTICS

FC=H or open

FC=L

ØR

ØP

HL

L

H

Z

Note:

Z=(High impedance)

VCO POLARITY

1

2

VCO INPUT VOLTAGE

FC pin is provided to change phase polarity of phase comparator. Characteris-

(ØR, ØP) are reversed depending upon FC pin input level. Also, monitor pin

Depending upon VCO polarity, FC pin should be set accordingly:

When VCO polarity are like

, FC should be set High or open circuit;

When VCO polarity are like

, FC should be set Low.

1

2

ØR

ØP

ZL

Z

Z

L

Z

LH

Z

L

L