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Cypress Semiconductor Electronic Components Datasheet

CY25483 Datasheet

Three-PLL Programmable Clock Generator

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CY25403/CY25423/CY25483
Three-PLL Programmable Clock Generator
with Spread Spectrum
Three-PLL Programmable Clock Generator with Spread Spectrum
Features
Three fully integrated phase-locked loops (PLLs)
Input frequency range
External crystal: 8 to 48 MHz
External reference: 8 to 166 MHz clock
Reference clock input voltage range
2.5 V, 3.0 V, and 3.3 V for CY25483
1.8 V for CY25403 and CY25423
Wide operating output frequency range
3 to 166 MHz
Programmable spread spectrum with center and down spread
option and lexmark and linear modulation profiles
VDD supply voltage options
2.5 V, 3.0 V, and 3.3 V for CY25403 and CY25483
1.8 V for CY25423
Frequency select feature with option to select four different
frequencies
Power-down, output enable, and SS ON/OFF controls
Low jitter, high accuracy outputs
Ability to synthesize nonstandard frequencies with Fractional-N
capability
Three clock outputs with programmable drive strength
Glitch-free outputs while frequency switching
8-pin SOIC package
Commercial and Industrial temperature ranges
One-time programmability
For programming support, contact Cypress technical support
or send an e-mail to clocks@cypress.com
Benefits
Multiple high-performance PLLs allow synthesis of unrelated
frequencies
Nonvolatile programming for personalization of PLL
frequencies, spread spectrum characteristics, drive strength,
crystal load capacitance, and output frequencies
Application specific programmable EMI reduction using Spread
Spectrum for clocks
Programmable PLLs for system frequency margin tests
Meets critical timing requirements in complex system designs
Suitability for PC, consumer, portable, and networking
applications
Capable of Zero PPM frequency synthesis error
Uninterrupted system operation during clock frequency switch
Application compatibility in standard and low-power systems
Functional Description
For a complete list of related documentation, click here.
Block Diagram
XIN/
EXCLKIN
XOUT
OSC
FS0
FS1
SSON
PD#/OE
MUX
and
Control
Logic
PLL1
PLL 2
(SS)
PLL3
(SS)
Crossbar
Switch
Output
Dividers
and
Drive
Strength
Control
CLK1
(SS)
CLK2
(No SS)
CLK3
(SS)
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 001-12564 Rev. *K
• San Jose, CA 95134-1709 • 408-943-2600
Revised October 31, 2017


Cypress Semiconductor Electronic Components Datasheet

CY25483 Datasheet

Three-PLL Programmable Clock Generator

No Preview Available !

CY25403/CY25423/CY25483
Contents
Device Selector Guide ...................................................... 3
Pin Configuration ............................................................. 3
Pin Definitions .................................................................. 3
Functional Overview ........................................................ 4
Configurable PLLs ....................................................... 4
Input Reference Clocks ............................................... 4
VDD Power Supply Options ........................................ 4
Spread Spectrum Control ............................................ 4
Frequency Select ........................................................ 4
Glitch-Free Frequency Switch ..................................... 4
PD#/OE Mode ............................................................. 4
Output Drive Strength .................................................. 4
Generic Configuration and Custom Frequency ........... 4
Absolute Maximum Conditions ....................................... 5
Recommended Operating Conditions ............................ 5
DC Electrical Specifications ............................................ 6
Thermal Resistance .......................................................... 6
AC Electrical Specifications ............................................ 7
Configuration Example .................................................... 8
Recommended Crystal Specification ............................. 8
Recommended Crystal Specification ............................. 8
Test and Measurement Setup .......................................... 9
Voltage and Timing Definitions ....................................... 9
Ordering Information ...................................................... 10
Possible Configurations ............................................. 10
Ordering Code Definitions ......................................... 11
Package Drawing and Dimensions ............................... 12
Acronyms ........................................................................ 13
Document Conventions ................................................. 13
Units of Measure ....................................................... 13
Document History Page ................................................. 14
Sales, Solutions, and Legal Information ...................... 16
Worldwide Sales and Design Support ....................... 16
Products .................................................................... 16
PSoC® Solutions ...................................................... 16
Cypress Developer Community ................................. 16
Technical Support ..................................................... 16
Document Number: 001-12564 Rev. *K
Page 2 of 16


Part Number CY25483
Description Three-PLL Programmable Clock Generator
Maker Cypress Semiconductor
Total Page 16 Pages
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