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AR# 31246

10.1 EDK - WebServer project for Spartan3A/AN Starter Kit fails timing

Description

I downloaded the WebServer design from http://www.xilinx.com/products/boards/s3astarter/reference_designs.htmand upgraded it from 9.1 to 10.1.

After implementation, two timing constraints fail with a big slack for setup and the memory test fails.

Solution

Adding the following constraints to the UCF can fix the problem:

NET "DDR2_DQ_pin<*>" IFD_DELAY_VALUE = 2;

NET "DDR2_DQS_pin<*>" IFD_DELAY_VALUE = 2;

AR# 31246
Date 12/15/2012
Status Active
Type General Article