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Ophir_eng
New Contributor
New ContributorWeak pull-ups \ tri-state at cyclone v soc
Hello, we are doing a bring up for a new card, we are seeing a phenomenon and trying to understand it, the fpga is loaded by the hps, and the nconfig pin is held constant at a logical 1, when the card...
FvM
Super Contributor
Super Contributor- Hi,
connecting 10k pull-down to nconfig isn't correct. The pin should have a pull-up resistor and temporarily pulled down to trigger reconfiguration.
Ophir_engNew Contributor
New ContributorHi, thanks you for the comment
We have constant pull-up on nconfig so nconfig always at high position
Some of our outpus with pull down (to make sure that the en of the power supply will be at low position until the fpga will power up and enable the power supplies according our sequence), we saw at the oscilloscope that the en assert to high to 2-3 sec and then goes low
We have constant pull-up on nconfig so nconfig always at high position
Some of our outpus with pull down (to make sure that the en of the power supply will be at low position until the fpga will power up and enable the power supplies according our sequence), we saw at the oscilloscope that the en assert to high to 2-3 sec and then goes low
