AR# 10180

3.4 FPGA Express - FPGA Express does not export clock pin lock constraint for 4k architectures.

Description

Keywords: pin, lock, constraint, clock, 4k

Urgency: Standard

General Description:
FPGA Express normally exports pin-locking information in the EDIF netlist.
However, FPGA Express does not export pin-locking information for clock
ports in 4K architectures.

Solution

Use a UCF to lock the clock pins. Below is an example of the appropriate
UCF syntax for the LOC constraint:

NET clock LOC=P57;
AR# 10180
Date 08/28/2001
Status Archive
Type General Article