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hwtodt
Visitor
Visitor
419 Views
Registered: ‎12-04-2018

the status of user I / O during configuration

I'm using xcku035-ffva1156-2-e(kintex-ultrascale).
Please let me know the status of user I/O during configuration.
Is it a pull-up inside the FPGA? Or is it a pull down?

Ultrascale has failed to configure from the external ROM.
To debug, I want to know the state of user I/O in the configuration.

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1 Reply
iguo
Xilinx Employee
Xilinx Employee
416 Views
Registered: ‎08-10-2008

It's controlled by PUDC_B. When it's low, pull-ups on User-I/O are enabled otherwise floating. Check UG570 for more details.

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