Important Update for Stratix II and Cyclone II Devices

Stratix II M4K Read Issue

An intermittent read failure has been detected on Stratix® II FPGA M4K memory blocks due to a software configuration error. A software update is available to address this issue. To learn more about this issue, refer to the Stratix II FPGA Family Errata Sheet (PDF).

Solution

A software fix is available now in the Quartus® II software version 5.1. The software fix is also available now in the Quartus II software version 5.0 service pack 2.

Cyclone II M4K Write Issue

A write error has been detected on Cyclone™ II FPGA M4K memory blocks when using dual ports and dual clocks. A software workaround is available to address this issue. To learn more, refer to the Cyclone II FPGA Family Errata Sheet (PDF).

Workaround Solution

A software workaround is available now in the Quartus II software version 5.1. The software workaround is also available now in the Quartus II software version 5.0 service pack 2.

Long-Term Solution

A Cyclone II FPGA silicon revision will be available in 2006 to ensure full utilization of M4K blocks and proper logic element (LE) operation in every mode. The silicon revision will also ensure the M4K block frequency performance.

Quartus II Software Availability

The Quartus II software version 5.1 is now shipping to all customers with an active subscription.

The Quartus II software version 5.0 service pack 2 is now available for download.

The Quartus II software version 5.1 Web Edition is now available for download.