[SI-LIST] DDR3 Slew Rate derating.
- From: Surita Chandani <surita.chandani@xxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Mon, 25 Jan 2010 14:15:14 -0800 (PST)
I am trying to understand DDR3 slew rate derating. Let
us say we are working with a differential DQS with a fixed slew rate of 2.0
V/ns.
When the DQ slew rate is 1.5 V/ns the setup time is 59
ps. When the DQ slew rate increases to 2.0 V/ns, the setup time increases to 88
ps. I thought the setup time would go down with a faster signal.
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