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JC and JD PMOD Resistors for Single-Ended

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minersrevolt
Junior(0)
JC and JD PMOD Resistors for Single-Ended

Hey,
Sorry to beat a (few) dead horses [1] [2] [3] but would like a bit of clarification on using the Differential JC/JD PMOD's for single-ended mode.
In the linked posts it has been claimed that it can be done simply by constraining it IE:
sample xdc:

set_property PACKAGE_PIN AB6  [get_ports my_signal]; #JC1-N

...

set_property IOSTANDARD LVCMOS33 [get_ports -of_objects [get_iobanks 13]];

 

However my questions are:

 

(1) Can you apply unique signals to every available IOB? Use P/N completely independently? 

 

(2) Do you need to explicitly state diff_term to false in the xdc file, IE

 

set_property DIFF_TERM FALSE [get_ports my_signal]

 

for each of these ports?

 

(3) Do you need to change the Resistors on these ports from the 0 ohms to the 200 ohms JA, JB, and JE use? Shown on Sheet 3

 

Thanks!

 

zedman2000
Moderator(6)
Hi there,

Hi there,

Digilent handles educational support for Zedboard. You can visit their forums at:
https://forum.digilentinc.com

Thanks!