10-31-2013 05:34 PM
I need to implement an embedded system in an xc6slx45fgg484-2. The system contains one microblaze, one DDR3 controller and one PCI IP core and one CDMA but according the "place and route" tool the design is unrouteable (9983 signals are not completely routed).
The following message appears:
This design is unrouteable. Router will not continue. To evaluate the problem please use fpga_editor. The nets listed below can not be routed:
If the DDR3 controller or the PCI IP core is removed from the system the "place and route" finishes successfully.
Any idea how to resolve this issue?
10-31-2013 05:40 PM
Please check if the constraints of MIG core were prpogating correctly.
Check if each of those IPs are implementing succeffully in standalone.
If you can share few of the unrouted paths we may have some more clues.
11-01-2013 03:40 PM
Thanks for attending this issue.
I was able to implement the DDR3 controller alone, but it was not possible to implement the PCI IP Core alone, there is the following warning:
1 signals are not completely routed.
WARNING:ParHelpers:360 - Design is not completely routed.
any idea how to resolve it?
11-01-2013 06:37 PM
Can you please share the IP, tool versions and core configuration files .xco ?
11-03-2013 06:03 PM
11-05-2013 01:20 AM - edited 11-05-2013 01:23 AM
Thanks for sharing the design, it looks like the path is very long and there are no placement constraints in the design so the tool facing dfficulty in PAR.
Can you recheck if the constraints got removed or not not generated properly ?
11-05-2013 10:15 AM