Problem DevKit Agilex 5 - MK-A5E065BB32AES1

Hello,

I received a new module from the distributor.

However, after powering it on and running the diagnostic test (board_test_system), I’m still getting a message that two devices are not responding—see the picture below.

But since I’m not going to use those devices for my project, I moved on to connecting the Texas ADC (ADC3669) through the FMC connector. That’s where I encountered another issue: the pins PIN_BH62 and PIN_BH59, which are set up as a differential pair, aren’t functioning properly as inputs/outputs—they’re not configuring correctly. I created a simple program for data collection and added a SignalTap instance, using the converter’s signal as the trigger clock.

Here is what I tested:

• I set PIN_BH62 and PIN_BH59 as a differential output—drove them with a PLL clock and checked the oscilloscope. Result: they showed a constant high level.
• I set PIN_BH62 and PIN_BH59 as a differential input—applied a clock signal and observed them in SignalTap. Result: they remained high.
• I disconnected the converter from the FMC connector—according to SignalTap, the pins then read low.
• I reconnected the converter to the FMC connector—set PIN_BH62 as a single-ended input and PIN_BH59 as an output. On the converter side, I tied them together with a resistor. Observing SignalTap while driving the output high or low showed that the input correctly followed the output state.
• I rerouted the clock on the converter to one of the data lines and checked the waveform. This change allowed me to see the clock in SignalTap.

In summary: what could be the reasons why PIN_BH62 and PIN_BH59, when configured as a differential pair, are not configuring correctly?