[SI-LIST] equal length requirement for SDRAM signals
- From: 李磊 <aleilee@xxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Tue, 22 Jan 2013 14:32:03 +0800 (CST)
hi, experts,
in many vendors' SDRAM layout guide line, there is equal length requirement for
SDRAM group signals. in order to meet this, we use snake lines to reach this
target usually.
in my understanding, this kind of requirement is just only from electrical
timing point of view.
Actually from SSN point of view, different signal length should have benefit on
the contrary.
so as long as signal timing constraint is not violated, it's better to make
signal length unequal.
Am I right?
thanks.
BR,Leon
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