Si51210
TWO OUTPUTS FACTORY PROGRAMMABLE CLOCK
GENERATOR
Features
Generates up to 2 CMOS clock 2.5 to 3.3 V voltage supply range
outputs from 3 to 200 MHz
0.25% to 1.0% spread spectrum
Accepts crystal or reference
clock input
(center spread)
Low cycle-cycle jitter
3 to 166 MHz reference clock input
8 to 48 MHz crystal input
Programmable FSEL, SSEL,
SSON, PD, and OE input
functions
Programmable output rise and
fall times
Ultra small 6-pin TDFN package
(1.2 mm x 1.4 mm)
Low power dissipation
Ordering Information:
See page 9.
Applications
Crystal/XO replacement
EMI reduction
Digital still camera
IP phone
Pin Assignments
Portable devices
Smart meter
Description
VDD
VSS
1
2
3
6
5
4
SSCLK2/REFCLK_D
FSEL/SSEL/SSON/
PD/OE1
SSCLK1/REFCLK
FSEL/SSEL/SSON/
OE2
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.
Si51210
XIN/CLKIN
XOUT
Patents pending
Functional Block Diagram
4
SSCLK1/
REFCLK/
0E2/FSEL/
SSEL/SS0N
PLL with
Modulation
Control
XIN/
CLKIN
2
3
Buffers,
Dividers,
and
XOUT
Switch
Matrix
Programmable
Configuration
Register
5 SSCLK2/
REFCLK_D
0E1/FSEL/
SSEL/SS0N/PD
V-REG
1
6
VDD
VSS
To Core
To Pin 4 and
Pin 5
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.