XAPP454 Datasheet, PDF (15/15 Pages) Xilinx, Inc – DDR2 SDRAM Interface for Spartan-3 Generation FPGAs

References
References
Additional
Resources
Conclusion
Revision
History
Notice of
Disclaimer
R
This document uses the following references:
1. Micron MT47H16M16BG-37E DDR2 SDRAM Data Sheet
http://download.micron.com/pdf/datasheets/dram/ddr2/256MbDDR2.pdf
2. DS529, Spartan-3A FPGA Family: Data Sheet
3. UG086, Xilinx Memory Interface Generator (MIG) User Guide
The following resources provide additional information useful to this application note:
1. XAPP458, Implementing DDR2-400 Memory Interfaces in Spartan-3A FPGAs
2. DS610, Spartan-3A DSP FPGA Family: Data Sheet
It is possible to implement a high-performance DDR2 SDRAM interface for
Spartan-3 generation FPGAs. This design has been simulated, synthesized in Xilinx Synthesis
Technology (XST) and Synplicity software, and taken through the Xilinx Project Navigator flow.
The following table shows the revision history for this document.
Date
12/06/04
06/07/07
06/11/07
05/09/08
01/20/09
Version
1.0
1.1
1.1.1
2.0
2.1
Revision
Initial Xilinx release.
Revised to update references to MIG tool.
Trademark update.
Major revision. Added detailed descriptions of the read data capture,
read data clocking, and delay calibration circuits used in the design.
Added Reference Design Matrix (Table 7).
Updated “Delay Calibration Circuit,” page 6 and Table 6.
Xilinx is disclosing this Application Note to you “AS-IS” with no warranty of any kind. This Application Note
is one possible implementation of this feature, application, or standard, and is subject to change without
further notice from Xilinx. You are responsible for obtaining any rights you may require in connection with
your use or implementation of this Application Note. XILINX MAKES NO REPRESENTATIONS OR
WARRANTIES, WHETHER EXPRESS OR IMPLIED, STATUTORY OR OTHERWISE, INCLUDING,
WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT, OR
FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL XILINX BE LIABLE FOR ANY LOSS OF
DATA, LOST PROFITS, OR FOR ANY SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR INDIRECT
DAMAGES ARISING FROM YOUR USE OF THIS APPLICATION NOTE.
XAPP454 (v2.1) January 20, 2009
www.xilinx.com
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