Global Sources
EE Times-Asia
Stay in touch with EE Times Asia
?
EE Times-Asia > Memory/Storage
?
?
Memory/Storage??

Implementing DDR2-400 memory interfaces in Spartan-3A FPGAs

Posted: 09 Jun 2008 ?? ?Print Version ?Bookmark and Share

Keywords:DDR2-400? memory interfaces? FPGAs?

High-performance consumer products and their requirement for low-cost, high-bandwidth memory create demand for high-performance DDR2 memory interfaces. Xilinx offers a Memory Interface Generator (MIG) integrated in the CORE Generator software for ultimate design flexibility and ease-of-use. MIG is a free, user-friendly tool designed to create memory interfaces in unencrypted RTL. This tool supports multiple memory architectures across a variety of FPGA selections, providing system designers with the flexibility to easily customize their own design.

Spartan-3A FPGAs with the higher speed grade (-5) have been specified for operation up to DDR2-333 using a 166MHz clock, while lower speed grade (-4) devices have been specified for operation up to DDR2-266 using a 133MHz clock. Based on demand for even higher performance, Xilinx has validated a DDR2-400 (200MHz clock) memory interface in Spartan-3A FPGAs with the higher speed grade (-5). The validation results also apply to Spartan-3AN and Spartan-3A DSP FPGAs with the higher speed grade (-5).

The DDR2-400 memory interface discussed in this application note is derived from the default output of MIG. The design is fully verified in hardware using Spartan-3A FPGAs with the higher speed grade (-5) assembled on Spartan-3A Starter Kits. The validation effort includes characterization at different process corners, as well as temperature and voltage variations that meet commercial grade requirements.

View the PDF document for more information.





Article Comments - Implementing DDR2-400 memory interfa...
Comments:??
*? You can enter [0] more charecters.
*Verify code:
?
?
Webinars

Seminars

Visit Asia Webinars to learn about the latest in technology and get practical design tips.

?
?
Back to Top