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Cypress Semiconductor Electronic Components Datasheet

CY25482 Datasheet

Two-PLL Programmable Clock Generator

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CY25402/CY25422/CY25482
Two-PLL Programmable Clock Generator
with Spread Spectrum
Two-PLL Programmable Clock Generator with Spread Spectrum
Features
Two 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 CY25482
1.8 V for CY25402 and CY25422
Wide operating output frequency range
3 to 166 MHz
Programmable[1] 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 CY25402 and CY25482
1.8 V for CY25422
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
Block Diagram
8-pin small outline integrated circuit (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 parts per million (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.
XIN
/EXCLKIN
XOU
T
OSC
FS0
FS1
MU
X
and
Control
Logic
PLL 1
(SS)
PLL 2
(SS)
Crossbar
Switch
Output
Dividers
and
Drive
Strength
Control
CLK1
(SS)
REFOUT
(No SS)
CLK2
(SS)
SSON
PD#/OE
Note
1. The devices mentioned in this datasheet are available as factory-programmable parts and not as field-programmable parts, since the associated programming software
is currently not available. Visit www.cypress.com to create a Technical Support case, so Cypress can provide a programming file (.jed file) that matches your
requirements.
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 001-12565 Rev. *M
• San Jose, CA 95134-1709 • 408-943-2600
Revised October 31, 2017


Cypress Semiconductor Electronic Components Datasheet

CY25482 Datasheet

Two-PLL Programmable Clock Generator

No Preview Available !

CY25402/CY25422/CY25482
Contents
Device Selector Guide ...................................................... 3
Pin Configuration ............................................................. 3
Pin Definitions .................................................................. 3
Pin Configuration ............................................................. 4
Pin Definitions .................................................................. 4
Pin Configuration ............................................................. 5
Pin Definitions .................................................................. 5
Functional Overview ........................................................ 6
Two Configurable PLLs ............................................... 6
Input Reference Clocks ............................................... 6
VDD Power Supply Options ........................................ 6
Output Source Selection ............................................. 6
Spread Spectrum Control ............................................ 6
Frequency Select ........................................................ 6
Glitch-Free Frequency Switch ..................................... 6
PD#/OE Mode ............................................................. 6
Output Drive Strength .................................................. 6
Generic Configuration and Custom Frequency ........... 6
Absolute Maximum Conditions ....................................... 7
Recommended Operating Conditions ............................ 7
DC Electrical Specifications ............................................ 8
AC Electrical Specifications ............................................ 9
Configuration Example .................................................... 9
Recommended Crystal Specification ........................... 10
Recommended Crystal Specification ........................... 10
Test and Measurement Setup ........................................ 10
Voltage and Timing Definitions ..................................... 11
Ordering Information ...................................................... 12
Possible Configurations ............................................. 12
Ordering Code Definitions ......................................... 13
Package Drawing and Dimensions ............................... 14
Acronyms ........................................................................ 15
Document Conventions ................................................. 15
Units of Measure ....................................................... 15
Document History Page ................................................. 16
Sales, Solutions, and Legal Information ...................... 18
Worldwide Sales and Design Support ....................... 18
Products .................................................................... 18
PSoC® Solutions ...................................................... 18
Cypress Developer Community ................................. 18
Technical Support ..................................................... 18
Document Number: 001-12565 Rev. *M
Page 2 of 18


Part Number CY25482
Description Two-PLL Programmable Clock Generator
Maker Cypress Semiconductor
Total Page 18 Pages
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