SM802109UMG 데이터 시트보기 (PDF) - Micrel

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SM802109UMG

ClockWorks™ PCI-e Quad 100MHz Ultra-Low Jitter, HCSL Frequency Synthesizer

Micrel 

Micrel, Inc.

Pin Description (Continued)

Pin Number

Pin Name

Pin Type

7, 12, 15, 19

TEST

8

13, 14

18

22

9

VDD

VSS

(Exposed Pad)

VDDO1

VSSO1

REF_IN

PWR

PWR

PWR

PWR

I, (SE)

10

XTAL_IN

I, (SE)

11

XTAL_OUT

O, (SE)

SM802109

Pin Level

LVCMOS

Crystal

Crystal

Pin Function

Factory Test pins, Do not connect anything to these

pins.

Core Power Supply

Core Power Supply Ground. The exposed pad must

be connected to the VSS ground plane.

Power Supply for Output Bank 1

Power Supply Ground for Output Bank 1

Reference Clock Input

Crystal Reference Input, no load caps needed (see

Figure 5).

Crystal Reference Output, no load caps needed (see

Figure 5).

Truth Table

PLL_BYPASS

0

1

−

−

XTAL_SEL

−

−

0

1

INPUT

−

−

REF_IN

XTAL

OUTPUT

PLL

XTAL/REF_IN

−

−

September 2011

3

M9999-092911-B

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

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