Altera DDR Timing Wizard - Manual (Page 29)

Altera Corporation 2–17
November 2007 DDR Timing Wizard User Guide
Getting Started
1
If you do not find your memory device in the pull-down
menu, select Custom, and fill in the other fields from the
memory device datasheet.
Figure 2–10. Select Memory Device
7. You must fill in the interface signal names in the subsequent pages.
First, specify whether you are using the DQS mode (using DLL for
read capture) or the non-DQS mode (using PLL for read capture).
Indicate whether you are using the DQS postamble circuitry. (DQS
mode and postamble circuitry are recommended whenever
possible.)
Figure 2–11 shows the DTW page with the DQS mode and
DQS postamble check boxes checked at the bottom of the page.