[SI-LIST] Silly question
- From: "erturkk" <erturkk@xxxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Thu, 02 Sep 2004 23:51:16 -0000
Hi all,
This is probably a silly question, but while doing 4-layer boards all
the time, I never asked it to myself until now:
On my home project front-panel I/O board, I initially had 1394 and
usb2.0 differential pairs going from connector to connector on a
_single_ layer board. The signals come from the pc motherboard with
a cable, and on this i/o board I connect them to appropriate
connectors.
After learning the impedance requirements must be met, I ended up
adding a dummy plane so that the fab house can control the impedance.
Do I have to connect that dummy plane to ground?
If the signals were single-ended, I know the answer would be yes.
What do you think?
thanks,
erturk
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