Virtex 4 LX25

May 03, 2006 6 Replies
A

Hi,



does anybody have a list of the unbonded iob's on the lx25?



Thanks,



Alastair



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J

ADEPT shows unbonded IOBs. You can copy and paste them to an editor or export the list to Excel spreadsheet. It is availabe at

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HTH, Jim

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A

Thanks,

I;ve opened adept with the correct package/fpga. All the pins seem to be physically connected, is there an option somewhere for viewing the unbonded iob's?

Thanks a lot,

Alastair

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J

Not all device/package combinations have unbonded IOBs. Usually a big device in a small package have unbonded IOBs. As an example, if you open 4vlx25sf363 in ADEPT, it will displays all unbonded IOBs (UNB_XmYn pins) in this package.

HTH, Jim

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P

Look at the data sheet: The family overview in table 1 tells you that the chip has 448 IO. Table 2 then tells you that the SF363 package has 240 available IO, and the FF668 package has all 448 IO brought out.

Peter Alfke, Xilinx

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