SM803020UMYR 데이터 시트보기 (PDF) - Micrel

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SM803020UMYR

Flexible Ultra-Low Jitter Clock Synthesizer

Micrel 

Micrel, Inc.

Pin Number

B19, B32

A25

A26

A24

Pin Name

NC

VCXO_OUT

VCXO_IN

VC

Pin Type

O, SE

I, SE

I

Pin Level Pin Function

VCXO output, 8 to 10pF, programmable

VCXO input, 8 to 10pF, programmable

Control voltage for VCXO, positive slope

SM803020

Truth Tables

PLL_BYPASS

0

1

−

−

−

−

−

−

XTAL_SEL

−

−

0

1

−

−

−

−

OEA

1

1

1

1

0

1

1

1

FSEL

1

0

Output Frequency (MHz)

Primary

Secondary

OEB

1

1

1

1

1

0

1

1

OEC

1

1

1

1

1

1

0

1

OED

1

1

1

1

1

1

1

0

Input

−

−

REF_IN

XTAL

−

−

−

−

Output

PLL

XTAL/REF_IN

−

−

QA Tri-state

QB Tri-state

QC Tri-state

QD Tri-state

Output Logic Programming

Available output logic types are LVPECL (default), LVDS,

HCSL and LVCMOS.

Each output can be programmed individually to any of the

four logic types through SPI.

Unused outputs can be disabled to high impedance.

All logic types are differential except LVCMOS. LVCMOS

signals are single ended coming out of the Qx pins. During

LVCMOS operation the /Qx pins are disabled.

July 22, 2013

5

Revision 1.0

hbwhelp@micrel.com or (408) 955-1690

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