CY27020 Datasheet, PDF (1/9 Pages) Cypress Semiconductor – Supports clock requirements for printers

CY27020
Spread Spectrum Clock Generator
Spread Spectrum Clock Generator
Features
■ Supports clock requirements for printers
■ 48-MHz spread spectrum clock output
■ 48-MHz reference clock output
■ Two selectable spread percentages: –1% and –3%
■ Integrated loop filter
■ 48-MHz crystal or external clock input
■ 3.3-V supply operation (2.5-V functional)
■ 8-pin small outline integrated circuit (SOIC) package
Logic Block Diagram
XIN
XOUT
Oscillator
Functional Description
The CY27020 clock generator provides a low EMI clock output
for printers. It features spread spectrum technology, a
modulation technique designed specifically for reducing EMI at
the fundamental frequency and its harmonics.
For a complete list of related documentation, click here.
REFOUT
SSON#
SSSEL
PLL
SSCG
Frequency Table
XIN
48.00 MHz
48.00 MHz
48.00 MHz
48.00 MHz
SSON#
0
0
1
1
SSSEL
0
1
0
1
CLKOUT
REFOUT
48.00 MHz
48.00 MHz
48.00 MHz
48.00 MHz
CLKOUT
48.00 MHz at –1%
48.00 MHz at –3%
48.00 MHz (No Spread)
48.00 MHz (No Spread)
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 38-07273 Rev. *H
• San Jose, CA 95134-1709 • 408-943-2600
Revised November 2, 2016