CY25562 Datasheet, PDF (1/8 Pages) Cypress Semiconductor – Spread Spectrum Clock Generator

CY25562
Spread Spectrum Clock Generator
Features
• 50- to 200-MHz operating frequency range
• Wide range of spread selections (9)
• Accepts clock and crystal inputs
• Low power dissipation
• 3.3V = 70 mw. (Fin = 65 MHz)
• Frequency spread disable function
• Center spread modulation
• Low cycle-to-cycle jitter
• Eight-pin SOIC package
Block Diagram
Applications
• High-resolution VGA controllers
• LCD panels and monitors
• Workstations and servers
Benefits
• Peak EMI reduction by 8 to 16 dB
• Fast time to market
• Cost reduction
Pin Configuration
Xin/
CLK
1
Xout 8
VDD 2
VSS 3
300K
REFERENCE
DIVIDER
PD CP
Loop
Filter
MODULATION
CONTROL
FEEDBACK
DIVIDER
vco
INPUT
DECODER
LOGIC
VDD
20 K
VDD
20 K
20 K
20 K
VSS
VSS
5
67
SSCC
S1 S0
DIVIDER
&
MUX
4 SSCLK
XIN/CLK 1
8 XOUT
VDD ₂
VSS ³
CY25562
7 S0
6 _S1
SSCLK 4
5 SSCC
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
Document #: 38-07392 Rev. *B
Revised December 28, 2002