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Visitor ariahsz
Visitor
7,307 Views
Registered: ‎02-10-2014

Route Error (471) ISE 14.2

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Hi everyone!

I have problem with route error 471 and I am using VC707 board.

I cannot solve it.

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1 Solution

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Xilinx Employee
Xilinx Employee
9,753 Views
Registered: ‎09-20-2012

Re: Route Error (471) ISE 14.2

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@ariahsz 

 

Hi,

 

I had a look at the design. When I ran autoroute -all in FPGA editor, I encountered below error.

 

ERROR:Route:471 -
This design is unrouteable. Router will not continue. To evaluate the problem please use fpga_editor. The nets listed below can not be routed:
Unrouteable Net:uut2/gmii_rxd<3>
Unrouteable Net:uut2/gmii_rxd<5>
Unrouteable Net:uut2/gmii_rxd<0>
Unrouteable Net:uut2/gmii_rxd<7>
Unrouteable Net:uut2/gmii_rxd<2>
Unrouteable Net:uut2/gmii_rx_er
Unrouteable Net:uut2/gmii_rx_dv
Unrouteable Net:uut2/gmii_rxd<4>
Unrouteable Net:uut2/gmii_rxd<6>
Unrouteable Net:uut2/gmii_rxd<1>

 

These nets are going from SLICE output to IDATAIN pin of IDELAYE2 element. Below is snapshot from net properties.

 

Capture.PNG

 

The IDATAIN pin of IDELAY element can be driven by its associated IO alone. In your case you are trying to connect this pin to slice which is resulting in route error. Please fix this in your design.

 

Thanks,

Deepika.

Thanks,
Deepika.
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10 Replies
Xilinx Employee
Xilinx Employee
7,303 Views
Registered: ‎09-20-2012

Re: Route Error (471) ISE 14.2

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Hi,

 

Check this http://www.xilinx.com/support/answers/20837.html

 

Open FPGA editor and examine the unrouted nets. If possible attach the test case (or .ncd and .pcf files) so that we can check the reason for failure.

 

Thanks,

Deepika.

Thanks,
Deepika.
--------------------------------------------------------------------------------------------
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Xilinx Employee
Xilinx Employee
7,296 Views
Registered: ‎01-03-2008

Re: Route Error (471) ISE 14.2

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You have not posted sufficient information to allow anyone to help you. You must include the entire ERROR message and your thoughts on why this may be occurring and what steps you have done to resolve the problem.
------Have you tried typing your question into Google? If not you should before posting.
Too many results? Try adding site:www.xilinx.com
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Visitor ariahsz
Visitor
7,291 Views
Registered: ‎02-10-2014

Re: Route Error (471) ISE 14.2

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thanks alot!

here are the required files.

 

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Visitor ariahsz
Visitor
7,272 Views
Registered: ‎02-10-2014

Re: Route Error (471) ISE 14.2

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Please tell me how I can fix the problems with fpga editor.

Thanks !!!

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Xilinx Employee
Xilinx Employee
7,267 Views
Registered: ‎09-20-2012

Re: Route Error (471) ISE 14.2

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Hi,

Thanks for attaching the files. I will look in to the design and post here back.

Thanks,
Deepika.
Thanks,
Deepika.
--------------------------------------------------------------------------------------------
Google your question before posting. If someone's post answers your question, mark the post as answer with "Accept as solution". If you see a particularly good and informative post, consider giving it Kudos (the star on the left)
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Visitor ariahsz
Visitor
7,238 Views
Registered: ‎02-10-2014

Re: Route Error (471) ISE 14.2

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thanks.

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Xilinx Employee
Xilinx Employee
9,754 Views
Registered: ‎09-20-2012

Re: Route Error (471) ISE 14.2

Jump to solution

@ariahsz 

 

Hi,

 

I had a look at the design. When I ran autoroute -all in FPGA editor, I encountered below error.

 

ERROR:Route:471 -
This design is unrouteable. Router will not continue. To evaluate the problem please use fpga_editor. The nets listed below can not be routed:
Unrouteable Net:uut2/gmii_rxd<3>
Unrouteable Net:uut2/gmii_rxd<5>
Unrouteable Net:uut2/gmii_rxd<0>
Unrouteable Net:uut2/gmii_rxd<7>
Unrouteable Net:uut2/gmii_rxd<2>
Unrouteable Net:uut2/gmii_rx_er
Unrouteable Net:uut2/gmii_rx_dv
Unrouteable Net:uut2/gmii_rxd<4>
Unrouteable Net:uut2/gmii_rxd<6>
Unrouteable Net:uut2/gmii_rxd<1>

 

These nets are going from SLICE output to IDATAIN pin of IDELAYE2 element. Below is snapshot from net properties.

 

Capture.PNG

 

The IDATAIN pin of IDELAY element can be driven by its associated IO alone. In your case you are trying to connect this pin to slice which is resulting in route error. Please fix this in your design.

 

Thanks,

Deepika.

Thanks,
Deepika.
--------------------------------------------------------------------------------------------
Google your question before posting. If someone's post answers your question, mark the post as answer with "Accept as solution". If you see a particularly good and informative post, consider giving it Kudos (the star on the left)
Xilinx Employee
Xilinx Employee
7,201 Views
Registered: ‎09-20-2012

Re: Route Error (471) ISE 14.2

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Hi @ariahsz 

 

Did you check this?

 

Thanks,

Deepika.

Thanks,
Deepika.
--------------------------------------------------------------------------------------------
Google your question before posting. If someone's post answers your question, mark the post as answer with "Accept as solution". If you see a particularly good and informative post, consider giving it Kudos (the star on the left)
Visitor ariahsz
Visitor
7,195 Views
Registered: ‎02-10-2014

Re: Route Error (471) ISE 14.2

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Hi vemulad

Thanks for help. I have modified the design according to your advice and it was helpful.

Now everything is OK!

Best Regards

 

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Observer azizsh
Observer
780 Views
Registered: ‎06-20-2015

Re: Route Error (471) ISE 14.2

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hello all,

hello @ariahsz

I'm stuck in exactly the same problem with the same unroutable nets (gmii_rxd) and I'm getting the same error

How did you resolve the issue?

if u remember :)

Thanks in advance

regards,

Aziz

 

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