CY25561_08 Datasheet, PDF (1/9 Pages) Cypress Semiconductor – Spread Spectrum Clock Generator

CY25561
Spread Spectrum Clock Generator
Features
■ 50 to 166 MHz Operating Frequency Range
■ Wide Range of Spread Selections:9
■ Accepts Clock and Crystal Inputs
■ Low Power Dissipation
❐ 70 mW–Typ at 66 MHz
■ Frequency Spread Disable Function
■ Center Spread Modulation
■ Low Cycle-to-cycle Jitter
■ 8-pin SOIC Package
Logic Block Diagram
Xin/
CLK
1
300 K
Xout 8
Applications
■ Desktop, notebook, and tablet PCs
■ VGA controllers
■ LCD panels and monitors
■ Workstations and servers
Benefits
■ Peak EMI reduction by 8 to16 dB
■ Fast time to market
■ Cost reduction
REFERENCE
DIVIDER
MODULATION
CONTROL
PD CP
FEEDBACK
DIVIDER
Loop
Filter
vco
VDD ₂
VSS ₃
INPUT
DECODER
LOGIC
VDD
20K
VDD
20K
20K
20K
VSS
VSS
5
67
SSCC
S1 S0
DIVIDER
&
MUX
4 SSCLK
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 38-07242 Rev. *C
• San Jose, CA 95134-1709 • 408-943-2600
Revised September 15, 2008
[+] Feedback