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Spacing for IO pins

Does anyone know how to set the absolute spacing of I/O pins when doing the I/O place inside the PREVIEW? Can I set the value on I/O constraint file?

Alex Soyer over 15 years ago

Hello tswong,
I guess you speak about 'Preview' in 5.1.41 or older version.
You could use the 'Respace' feature or you could use the Floorplan File to do it manually.
The I/O Place is more dedicated to Pads but could work with pins as well.
Thanks,
Alex
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tswong over 15 years ago

Alex,
Thanks for you reply!
Actually my module is small, but with high pin counts. It is very time consuming to move in manually. By the way, could you say more about the "Respace" feature and where I can find it....
Regards, TS
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Alex Soyer over 15 years ago

Tswong,
Could you please tell me exactly what you try to achieve ?
Because it seems you have already pre-constrained pins fom top level or from an other block and you would like to mimic the placement in this block.If it is teh case then I can propose some other way to do it.
For the 're-space' you can find the command in 'Edit -> Soft Pins -> Respace'.
You have the deatils on the command at:
http://support.cadence.com/wps/mypoc/cos?uri=deeplinkmin:DocumentViewer;src=pubs;q=prfref/prfref5.1.41/chap7.html#1048770
You need to search for 'Respacing Soft Pins'
Thanks,
Alex
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tswong over 15 years ago

Alex,
I can respace the pin spacings now. Thanks!
Regards, TS
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Alex Soyer over 15 years ago

TS,
You are welcome.
Regards,
Alex
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