ASM3P4200A Datasheet, PDF (1/7 Pages) PulseCore Semiconductor – Multi-Output Custom Clock Generator

July 2006
rev 0.2
ASM3P4200A
Multi-Output Custom Clock Generator
Features
• Generates seven clock outputs from an inexpensive
20MHz crystal or external reference clock.
• Output Frequencies are selectable through select bits
• Generates an EMI optimized clock signal at the output.
• ±1.5% (Typ) Centre Spread for Spread Spectrum
Clock Outputs
• Operates with a 3.3V ± 5% Supply Voltage
• Available in 28-pin TSSOP.
Product Description
The ASM3P4200A is a versatile multi output custom
clock generator. The seven high frequency Clock outputs
are generated using an inexpensive 20MHz Crystal or
external reference clock. The accuracy of the 20MHz
Input Clock should be within ±50ppm. The output clocks
consist of a low EMI spread spectrum clock and other
non-spread clocks. Three Select bits choose the
combination of Output Clock Frequency. Refer to the
Output Frequency Selection Table for the values. The
device operates from a Supply Voltage of 3.3V± 5%
with a tolerable ripple voltage of 50mV . The device is
available in a 28 pin TSSOP JEDEC package.
Block Diagram
S0 S1 S2
VDD
OE
XIN / CLK
XOUT
Crystal
Oscillator
PLL
CLK1
CLK2
CLK3
CLK4
CLK6
CLK7
CLK8
CLK9
GND
PulseCore Semiconductor Corporation
1715 S. Bascom Ave Suite 200 Campbell, CA 95008 • Tel: [phone] • Fax: [phone]
www.pulsecoresemi.com
Notice: The information in this document is subject to change without notice.