I'm having problems with IOSTANDARD specifications on the PMOD ports of the ZYBO.
My design utilizes most of the PMOD ports, namely JB-JE, and on one of the ports I want to output a 2.5V LVCMOS signal (named "Sync"). The other signals are all 3.3V LVCMOS. Trying to implement this on the ZYBO yeilds the following message:
[Place 30-58] IO placement is infeasible. Number of unplaced terminals (1) is greater than number of available sites (0).
The following Groups of I/O terminals have not sufficient capacity:
IO Group: 1 with : SioStd: LVCMOS25 VCCO = 2.5 Termination: 0 TermDir: Out RangeId: 1 Drv: 16 has only 0 sites available on device, but needs 1 sites.
Term: Sync
Attached is an example of my .XDC file. It's a bit messy since it was created manually first, then edited with the I/O Ports window. I'm wondering if it's possible to do what I'm asking. From my research, it sounds like there aren't enough I/O Banks to support so many outputs, with one output requiring a different VCCO. Is this accurate?
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krusing
I'm having problems with IOSTANDARD specifications on the PMOD ports of the ZYBO.
My design utilizes most of the PMOD ports, namely JB-JE, and on one of the ports I want to output a 2.5V LVCMOS signal (named "Sync"). The other signals are all 3.3V LVCMOS. Trying to implement this on the ZYBO yeilds the following message:
[Place 30-58] IO placement is infeasible. Number of unplaced terminals (1) is greater than number of available sites (0).
The following Groups of I/O terminals have not sufficient capacity:
IO Group: 1 with : SioStd: LVCMOS25 VCCO = 2.5 Termination: 0 TermDir: Out RangeId: 1 Drv: 16 has only 0 sites available on device, but needs 1 sites.
Term: Sync
Attached is an example of my .XDC file. It's a bit messy since it was created manually first, then edited with the I/O Ports window. I'm wondering if it's possible to do what I'm asking. From my research, it sounds like there aren't enough I/O Banks to support so many outputs, with one output requiring a different VCCO. Is this accurate?
iostandard_problem.xdc
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