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Working with DDRs in PrimeTime

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FLEXcertifydll

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Working with DDRs in PrimeTime
Andrew Cheng
Cisco Systems
170 West Tasman Dr.
San Jose, CA 95134

ABSTRACT
The timing of I/O interfaces can present some challenges for users of STA tools. This paper will
discuss using PrimeTime to tackle one of today's common I/O timing problems – the Double
Data Rate (DDR) interface.
Building on the techniques for source-synchronous interfaces covered in last year's "Complex
Clocking Situations" paper [1], the authors will demonstrate how to correctly analyze and
constrain several different implementations of the DDR interface. In the process, the authors will
demonstrate a number of generally useful PrimeTime techniques with application beyond DDRs.
 

spauls

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is there any other paper anybody can load on DDR , I need it.
 

maksya

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spauls said:
is there any other paper anybody can load on DDR , I need it.
Double Data Rate (DDR) SDRAM Specification by JEDEC. Is it useful for you? I can upload it at any time.
 

spauls

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maksya,
Pls upload it.
Thanks !!
 

aravind

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Hi maksya ,
can u please upload it soon,
looking for it .
Thanks
 

sree205

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hi, if you can go to jedec website, its available free of cost.

www.jedec.org
 

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