Preliminary Rev. 0.7 1/12

Copyright © 2012 by Silicon Laboratories

Si51210

This information applies to a product under development. Its characteristics and specifications are subject to change without notice.

Si51210

Features

Applications

Description

The factory programmable Si51210 is industry’s lowest power, smallest

footprint and frequency flexible programmable clock generator targeting

low power, low cost and high volume consumer and embedded

applications. The device operates from a single crystal or an external

clock source and generates 1 to 2 outputs up to 200 MHz. They are

factory programmed to provide customized output frequencies, control

inputs and ac parameter tuning like output drive strength that are

optimized for customer board condition and application requirements.

Functional Block Diagram



Generates up to 2 CMOS clock

outputs from 3 to 200 MHz



Accepts crystal or reference

clock input



3 to 166 MHz reference clock input



8 to 48 MHz crystal input



Programmable FSEL, SSEL,

SSON, PD, and OE input

functions



Low power dissipation



2.5 to 3.3 V voltage supply range



0.25% to 1.0% spread spectrum

(center spread)



Low cycle-cycle jitter



Programmable output rise and

fall times



Ultra small 6-pin TDFN package

(1.2 mm x 1.4 mm)



Crystal/XO replacement



EMI reduction



Portable devices



Digital still camera



IP phone



Smart meter

3

2

1

6

4

5

To Pin 4 and

Pin 5

To Core

Programmable

Configuration

Register

PLL with

Modulation

Control

Buffers,

Dividers,

and

Switch

Matrix

SSCLK1/

REFCLK/

0E2/FSEL/

SSEL/SS0N

SSCLK2/

REFCLK_D

0E1/FSEL/

SSEL/SS0N/PD

XIN/

CLKIN

XOUT

VDD

VSS

V-REG

Patents pending

Ordering Information:

See page 9.

Pin Assignments

6

5

4

1

2

3

VSS

SSCLK2/REFCLK_D

FSEL/SSEL/SSON/

PD/OE1

SSCLK1/REFCLK

FSEL/SSEL/SSON/

OE2

VDD

XOUT

XIN/CLKIN

Si51210