Spread Spectrum Frequency Timing Generator
Description
W42C31-03
Spread Spectrum Frequency Timing Generator
Features
• Maximized EMI suppression using Cypress’s Spread Spectrum technology
• Generates a spread spectrum copy of the provided input
• Integrated loop filter components • Operates with a 5V supply • Low power CMOS design • Available in 8-pin SOIC (Small Outline Integrated
Circuit)
Overview
The W42C31-03 incorporates the latest advances in PLL spread spectrum frequency synthesizer techniques.
By frequency modulating the output with a low-frequency carrier, EMI is greatly reduced.
Use of this technology allows systems to pass increasingly difficult EMI testing without resorting to costly shielding or redesign.
Simplified Block Diagram
5.
0V
In a system, not only is EMI reduced in the various clock lines, but also in all signals which are synchronized to the clock.
Therefore, the benefits of using this technology increase with the number of address and data lines in the system.
The Simplified Block Diagram shows a si...
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