[SI-LIST] si-list@freelists.org
- From: Rui Pimenta <rpimenta@xxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Mon, 18 Apr 2005 10:55:02 +0200
Dear all,
I am designing a new PCB boards which contains the Virtex-II pro
XC2VP50-5FF1152C. I want
to use 12 RocketIO Transceivers with speeds above 1Gb/s.
These boards will be working in a heavy-ion detector under a magnetic field of
~5 Tesla.
^^^^^^^^
As discribed, in Xilinx user guide ug024 page 111, it is recommended the use of
ferrite
beads from Murata for the power filtering on each transceiver power pin.
Since I have a magnetic field of ~5 Tesla I have some questions:
1- Is there any other way of designing these power filters without using
ferrite/coils,
and similar performance?
2- What are the risks that I will be taken if I don't place the ferrite? The
RocketIOs
will not work?
3- Any suggestions for overcome this issue?
I have inquired Xilinx on this matter and I am waiting for their answer. What I
am afraid
is that their answer may include something like: We cannot guarantee anything
that goes
out of specs. Which doesn't help me.
That is why I am contacting the list seeking for suggestions/advises.
Thanks in advance,
Rui Pimenta
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