[SI-LIST] Re: New appnote on PDS design -- XAPP623
- From: pwelling@xxxxxxxxxxxxxx
- To: ikhan@xxxxxxxxxxxxxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Mon, 12 Aug 2002 12:13:24 -0600
Mark,
You might make a note in the Noise Spectrum Measurement section to use a DC
Block to save the Spectrum Analyzer front end attenuators and other devices.
Someone might measure higher voltages and damage their analyzer.
Ross
-----Original Message-----
From: Ibrahim Khan [mailto:ikhan@xxxxxxxxxxxxxxxxxxx]
Sent: Sunday, August 11, 2002 7:29 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: New appnote on PDS design -- XAPP623
Mark,
I have not completely read the app note yet but whatever I have read
answers most of my questions on the subject. Good work. Question I
have raised to the si-list if SSO applies to the differential signals as
well because I have noticed that in the Virtex-II data sheet, under the
"maximum number of simultaneously switching outputs per power/ground
pair", they have listed all the single-ended I/O standard. I am using
LVDS on Virtex-II but it is not listed in the table. Any reason for
this?
Regards
Ibrahim
-----Original Message-----
From: Mark Alexander [mailto:mark.alexander@xxxxxxxxxx]=20
Sent: Thursday, August 08, 2002 6:00 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] New appnote on PDS design -- XAPP623
Hi Everyone,
I've recently posted a new appnote on our site about decoupling for=20
large FPGAs. This group is pretty varied and has a lot of collective=20
knowledge, so I'd be grateful for any feedback you might have on it.=20
You can download it from:
http://www.xilinx.com/xapp/xapp623.pdf
(it's not linked in to SI Central yet)
Thanks,
mark
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