| Author |
Message |
Al Clark
Guest
|
 Posted:
Wed Dec 15, 2004 4:40 am Post subject:
Re: Cyclone device misteriously overheats |
|
|
glen herrmannsfeldt <gah@ugcs.caltech.edu> wrote in news:cpnrgj$qv$1
@gnus01.u.washington.edu:
| Quote: |
Alex Somesan wrote:
(snip)
I cut the PCB traces of the VCCINT pins off the 3V3 rail and straped
them to 1V5 - works perfectly! No heat, no config mess-up. Thanks for
the advice. I guess it was obvious to the experinces guys out there. I
slaped myself a few times after carefully looking over the datasheet. I
guess now I have to clean up my reputation :).
And now we all know how tough Cyclone is with excess VccINT.
-- glen
|
Alex,
Don't let us "old timers" give you too much crap. We've all made this
mistake in one form or another. It called experience.
--
Al Clark
Danville Signal Processing, Inc.
--------------------------------------------------------------------
Purveyors of Fine DSP Hardware and other Cool Stuff
Available at http://www.danvillesignal.com |
|
| Back to top |
|
 |
Jan De Ceuster
Guest
|
| Posted:
Wed Dec 15, 2004 2:51 pm Post subject:
Re: Cyclone device misteriously overheats |
|
|
| Quote: | Stupid me!
You were right!
I cut the PCB traces of the VCCINT pins off the 3V3 rail and straped
them to 1V5 - works perfectly! No heat, no config mess-up. Thanks for
the advice. I guess it was obvious to the experinces guys out there. I
slaped myself a few times after carefully looking over the datasheet. I
guess now I have to clean up my reputation :).
Thanks for helping!
|
Spank yourself with a soldering iron while reciting the complete Cyclone manual
5 times (including appendix) and you'll receive an absolution from the Almighty
FPGA... |
|
| Back to top |
|
|
Josh Model
Guest
|
| Posted:
Wed Dec 15, 2004 10:18 pm Post subject:
Re: Cyclone device misteriously overheats |
|
|
Don't worry about it too much-- AVNET shipped us a rev. of their Xilinx
V21000 eval boards w/ a similar error. (turns out a 0 ohm resistor was
mistaken for a DNP in their 1.5V regulator network) They've since fixed
the problem, and have been very nice about replacing the boards, but from
what I can tell, they're a major distributor, so it happens to EVERYONE.
--Josh
"Alex Somesan" <alex.somesan@gmail.com> wrote in message
news:1103055154.853600.241580@z14g2000cwz.googlegroups.com...
| Quote: | Stupid me!
You were right!
Tied VCCINT to 1V5 and all works well. No heat at all.
I slaped myself a few times after going over the datasheet again, more
carefuly.
Anyway, stupid rookie mistake. I must clean my reputation now :).
Thanks for helping.
Alex.
|
|
|
| Back to top |
|
|
|
|
|
|
FAQ
Memberlist
Register
Profile
Log in to check your private messages
Log in