[SI-LIST] min/max trace length
- From: "bernd schuster" <bernd.schuster12@xxxxxxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Wed, 13 Aug 2008 11:13:06 +0200
Hi,
I often read minimum and maximum trace lengths in datasheets of sdram chips
(for example). As I figured out the length depends on the setup margin and
hold margin.
If I have a setup margin of 2ns and hold margin of 0.8ns (e.g.) - which
formulas will tell me the min. and max. trace length? The system is working
at 100MHz with a fall time / rise tim of 2ns.
How do I have to modify the formula when I want to calculate the timing for
an external flash memory (without clock traces)?
best regards
Bernd
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