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AR# 24863

LogiCORE PCI v4.2 and UCF Generator v2.2 - "ERROR:Pack:499 - The I/O component "RCLK_N" has an illegal IOSTANDARD value. The target architecture does not support IOSTANDARD value LVDS."

Description

Keywords: LVDS_25, LVDS, PCI, PCI-X IDELAYCTRL, IDELAY

The CORE Generator UCF Generator v2.2 is incorrectly setting the IOSTANDARD for RCLK_N and RCLK_P to LVDS instead of LVDS_25. This results in the following map error:

"ERROR:Pack:499 - The I/O component "RCLK_N" has an illegal IOSTANDARD value.
The target architecture does not support IOSTANDARD value LVDS. Please correct the IOSTANDARD property value.

ERROR:Pack:499 - The I/O component "RCLK_P" has an illegal IOSTANDARD value.
The target architecture does not support IOSTANDARD value LVDS. Please correct the IOSTANDARD property value."

Solution

To fix this, please change the UCF file to set the IOSTANDARD of RCLK_N and RCLK_P to LVDS_25 as shown here:

NET "RCLK_P" IOSTANDARD = LVDS_25 | DIFF_TERM = TRUE ;
NET "RCLK_N" IOSTANDARD = LVDS_25 | DIFF_TERM = TRUE ;
AR# 24863
Date Created 09/04/2007
Last Updated 03/05/2007
Status Active
Type General Article