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AR# 11598

4.1i Virtex-E PAR - Placer creates unroutable connections

Description

Keywords: TBUF, BUFT, unroutable, placer, placed

Urgency: Standard

General Description:
The placer is creating an unroutable configuration by placing a TBUF next to two 4-output slices. This configuration is unroutable due to contention for the eight output paths to the switchbox.

Solution

Using software version 4.1i, the following variable can be set so that the placer avoids the configurations described above:

For PCs:
set XIL_PAR_PREVENT_TBUF_OMUX_CONFLICT=1

For Workstations:
setenv XIL_PAR_PREVENT_TBUF_OMUX_CONFLICT 1
AR# 11598
Date Created 08/29/2007
Last Updated 10/22/2008
Status Archive
Type General Article