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Parallella Community Supercomputing for Everyone 2015-06-16T14:54:42+00:00 https://parallella.org/forums/feed.php?f=23&t=2535 2015-06-16T14:54:42+00:00 2015-06-16T14:54:42+00:00 https://parallella.org/forums/viewtopic.php?t=2535&p=14457#p14457 <![CDATA[Re: GPIO, max ratings, LVDS pin pairs, and reads/writes]]>
My interest is in playing with the GPIO pins with single sided voltages. Is it sufficient to change "parallella_gpio_emio.v" IOBUFDS IOSTANDARD to use "LVCMOS_25" (instead of LVSMOS_33), and build the "parallella.bit.bin"? It's a learning & exploring phase, and would like to take smaller low/no risk steps.

Statistics: Posted by ArunD — Tue Jun 16, 2015 2:54 pm

]]> 2015-06-16T13:41:58+00:00 2015-06-16T13:41:58+00:00 https://parallella.org/forums/viewtopic.php?t=2535&p=14450#p14450 <![CDATA[Re: GPIO, max ratings, LVDS pin pairs, and reads/writes]]>
Also by Fred in this script

https://github.com/parallella/parallell ... management

Statistics: Posted by aolofsson — Tue Jun 16, 2015 1:41 pm

]]> 2015-06-16T13:29:22+00:00 2015-06-16T13:29:22+00:00 https://parallella.org/forums/viewtopic.php?t=2535&p=14449#p14449 <![CDATA[Re: GPIO, max ratings, LVDS pin pairs, and reads/writes]]>
You also need to reprogram the PMIC on the board to output 3.3v on that power rail isntead of 2.5v, I have no idea if anyone has ever done that or how to do it in practice, I just know the HW can do it. (Be careful with that since controlling the voltage bus you could by mistake configure it for a voltage too high and physically damage the board !)

Statistics: Posted by tnt — Tue Jun 16, 2015 1:29 pm

]]> 2015-06-16T12:39:50+00:00 2015-06-16T12:39:50+00:00 https://parallella.org/forums/viewtopic.php?t=2535&p=14447#p14447 <![CDATA[Re: GPIO, max ratings, LVDS pin pairs, and reads/writes]]> Statistics: Posted by ArunD — Tue Jun 16, 2015 12:39 pm

]]> 2015-06-15T05:33:23+00:00 2015-06-15T05:33:23+00:00 https://parallella.org/forums/viewtopic.php?t=2535&p=14430#p14430 <![CDATA[Re: GPIO, max ratings, LVDS pin pairs, and reads/writes]]> Statistics: Posted by tnt — Mon Jun 15, 2015 5:33 am

]]> 2015-06-15T01:24:39+00:00 2015-06-15T01:24:39+00:00 https://parallella.org/forums/viewtopic.php?t=2535&p=14429#p14429 <![CDATA[GPIO, max ratings, LVDS pin pairs, and reads/writes]]> Statistics: Posted by ArunD — Mon Jun 15, 2015 1:24 am

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