Schematic-"Designentry" ERROR Instance referencing symbol is out of date "

Schematic-"Designentry" ERROR Instance referencing symbol is out of date "Description

When I implement or synthesize a schematic design, the following error message occurs during the schematic DRC:

"Designentry ERROR Instance <instance-name> referencing symbol <symbol-name> is out of date."

A similar error message and a pop-up window appear if the references schematic file is opened.

Solution Solutions

This error occurs if the time stamp on a instantiated symbol is newer than the time stamp of the schematic file, or if th E symbol time stamp is newer than the symbol time stamp at the time it was placed on the schematic.

The schematic DRC checks for both of the above cases but allows you to save a schematic without updating a symbol if you w Ant.

To update the symbol, open the referenced schematic. An "Open Schematic Files Error" box was displayed with all outdated symbols shown in the ' out-of-date symbols ' window on th e right. Make sure the desired symbol or symbols is highlighted and select the "Update Instances" button. Save the schematic and then re-run the original process, that caused the error.

In 7.1i, a option was added to "Update all Schematic Files" so this opening each Schematic are not required. To use this option:

1. Select the device in the ' Sources in Project ' window.

2. In the ' Processes ' window under "Design Entry Utilities", double-click "Update all Schematic Files".

In ISE 9.1i and earlier, the Schematic design rule check looked at both the system time stamp of the ". Sym" File and the I Nternal time stamp in the ". Sym" file. In ISE 9.2i and later, only the internal time stamp is used.

Schematic-"Designentry" ERROR Instance referencing symbol is out of date "