Yes, since the release of Quartus ® II software version 8.1 there is an update for the LVDS block in the EP3SL340 device timing models that provides a more robust timing model for the LVDS block.
Patch 0.45 is available to fix this problem for the Quartus II software version 8.1. Use the links below to download the patch, and then follow these steps:
- Install patch 0.45.
- Perform a full recompilation of the design.
- Verify no timing violations have occurred.
- Reprogram any existing devices already in the field and all future devices with the newly generated programming file.
For more information relating to the changes to the EP3SL340 timing model, refer to the Stratix III Device Family Errata Sheet (PDF).
For PCs, use the following link: http://www.altera.com/patches/quartus/81/pc-quartus_ii-8.1-0.45.exe
For Linux, use the following link: http://www.altera.com/patches/quartus/81/linux-quartus_ii-8.1-0.45.tar
The readme file is available at the following link: http://www.altera.com/patches/quartus/81/quartus_ii-8.1-0.45-readme.txt