2 Replies Latest reply on May 10, 2012 7:14 AM by yu.yanfeng

How do i enter and compensate for internal package wire length

Psberro Sep 3, 2014 1:29 PM

Hello Everyone,

I'm using CES 7.9.1 and i need to know how can i compensate the internal package scew in langth between two balls.

i know that when i enter "Part" there is a coluomm "package length " for that porpose.

and the questions asked are:

1. if i have many signals , is there an automated way to inport a txt file and avoid entering the lengthes for each signal? i've seen on the 7.9.3 user guide that there is a import option but i cant find it on 7.9.1.

2. when a doing match group between signal , after ive entred the llength data to CES , does it take automaticly into consideration the package langth in the calculations?

Thanks And BR

Pini .S

1. Re: How do i enter and compensate for internal package wire length

Andreas.Schaefer May 10, 2012 6:46 AM (in response to Psberro)

Hi,

There is a capabillity insid CES to import "PinPkgLengths.txt".

For further information go to:
http://supportnet.mentor.com/docs/201111030/docs/htmldocs/mgchelp.htm#context=exp_gd&id=454&tab=0&topic=NoNespecified

Kind regards,
Andreas
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2. Re: How do i enter and compensate for internal package wire length

yu.yanfeng May 10, 2012 7:14 AM (in response to Psberro)

First you need to create a text file for pin pacakge lengths. Usually IC vendor provide your with a CSV file of pin package lengths, so you are able to create this text file by copy. After the text file is ready, just run \7.9EE\SDD_HOME\ces\win32\bin>sidefile2icdb.exe while CES is open.

The text file should be like below format(the delimiter should be space not tab):

UNITS <value>
PART_NUMBER <part_number>
<pin_number> <value>

BTW, sidefile2icdb need the snapshot name and top bolck name, you can find from CES(clicking menu output-design status)

CES really takes the package lengths into count.

Yanfeng
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