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Visitor engrjet
Registered: ‎07-31-2012

Virtex6 Configuration Problem

I am using V6LX130T with XCF128 . Generally everything works fine. Platform flash is getting programmed and FPGA is getting configured normally.


But when I start in the morning after power on FPGA not getting configured though the PFLASH is already programmed with the mcs.

My observations:

When started for the first time in a day FPGA is not configured.

Then I waited for few minutes sometimes it comes up.

Sometimes after waiting for few minutes if turned off and on again then it comes up.

Once started, For the whole day I could turn off and on as many times I wanted and everytime FPGA got successfully configured.


I am unable to understand what is the root cause for not getting configured when I try for the first time. Need Help


Thanks in advance




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3 Replies
Visitor engrjet
Registered: ‎07-31-2012

Re: Virtex6 Configuration Problem

I am still not out of this problem. Need somebodys help.

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Teacher eteam00
Registered: ‎07-21-2009

Re: Virtex6 Configuration Problem

I am still not out of this problem. Need somebodys help.


Some things to check:


  • XCF128 purchased from unreliable channel
  • defective XCF128, or some other component (try another board, check for consistency)
  • marginal power supply or supplies
  • marginal board layout design (poor signal integrity in XCF128 interface signals)
  • configuration settings of FPGA or XCF128 deviate from UG360 recommendations
  • state of INIT_B and DONE pins when configuration fails

-- Bob Elkind

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Xilinx Employee
Xilinx Employee
Registered: ‎07-23-2012

Re: Virtex6 Configuration Problem


I'm wondering if the issue is resolved or not.

Can you please read the status register of the device after the configuration failure? This will give us a clue on what exactly is going wrong.

Please mark the post as "Accept as solution" if the information provided answers your query/resolves your issue.

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