3291-12 datasheet(8/15 Pages) PEREGRINE

Part #	3291-12

Description	1200 MHz / 550 MHz Dual Fractional-N FlexiPower??PLL for Frequency Synthesis

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Manufacturer	PEREGRINE [Peregrine Semiconductor Corp.]

Direct Link	http://www.peregrine-semi.com

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8 / 15 page

Product Specification

PE3291

Page 8 of 15

Document No. 70-0009-04

│ UltraCMOS™ RFIC Solutions

Table 7. Register Set

S20

S19

S18

S17

S16

S15

S14

S13

S12

S11

S10

S9

S8

S7

S6

S5

S4

S3

S2

S1

S0

Reserved

Test

PLL2 Synthesizer control

PLL2 Reference counter R2 divide ratio

Address

0

C24

C23

C22

C21

C20

R28

R 27

R 26

R 25

R 24

R 23

R 22

R 21

R 20

0

Res.

PLL2 Main counter M2 divide ratio

PLL2 Swallow counter A2

divide ratio

PLL2 Fractional counter F2

numerator value

Address

M28

M27

M26

M25

M24

M23

M22

M21

M20

A23

A22

A21

A20

F24

F23

F22

F21

F20

0

1

Res.

FlexiPower voltage

regulation

PLL1 Synthesizer control

PLL1 Reference counter R1 divide ratio

Address

P2

Res.

P1

C14

C13

C12

C11

C10

R18

R17

R16

R15

R14

R13

R12

R11

R10

1

0

PLL1 Main counter M1 divide ratio

PLL1 Swallow counter A1

divide ratio

PLL1 Fractional counter F1

numerator value

Address

M18

M17

M16

M15

M14

M13

M12

M11

M10

A14

A13

A12

A11

A10

F14

F13

F12

F11

F10

1

MSB (first in)

(last in) LSB

Figure 8. Serial Interface Mode Timing Diagram

t

DSU

t

DHLD

t

ClockL

t

ClockH

t

CLE

t

LEC

t

LEW

t

Data Out

Data

Clock

LE

Data Out

(f

oLD pin)

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3291-12 Datasheet(PDF) 8 Page - Peregrine Semiconductor Corp.

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