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Understanding I/O
(04-18-2019, 04:48 PM)alchitry Wrote: 1. Depends on the IO types. Most of the pins on the Au are connected with 3.3V so they are only compatible with IO standards that use 3.3V like LVCMOS33 and TMDS_33.

2. The dual voltage IO allows you power that bank with 1.8V instead of 3.3V. To do this, connect VBSEL (D20) to 1.8V (D21). This allows you to use 1.8V IO standards like LVDS.

3. The LED pins are 3.3V and are like any other pin but with an LED pulling them down (330 ohm resistor + LED). They can still be used as inputs/outputs if you need assuming the LED load isn't an issue.

See https://www.xilinx.com/support/documenta...lectIO.pdf for way more info on IO standards.

Thank you for your answers and I did read that pdf before asking and still had these questions. So because i'm not experienced in all of this, do you have any idea how I could read 88 different inputs?

Messages In This Thread
Understanding I/O - by Holoptics - 04-14-2019, 04:07 PM
RE: Understanding I/O - by alchitry - 04-18-2019, 04:48 PM
RE: Understanding I/O - by Holoptics - 04-18-2019, 05:06 PM
RE: Understanding I/O - by jonathonhagerty - 01-22-2020, 12:43 AM
RE: Understanding I/O - by jdeschamps - 07-22-2020, 04:50 PM
RE: Understanding I/O - by alchitry - 08-25-2020, 06:15 PM

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