Forum Discussion

ZaidSahawneh's avatar
ZaidSahawneh
Icon for New Contributor rankNew Contributor
2 years ago

Ethernet fails to establish on boot

I have a rather complicated design on a Stratix 10 FPGA. We control our design through SSH over an ethernet connection. Recently, I added Intel's Stratix 10 Temperature Sensor IP. It seems that wh...
Ethernet
ZiYing_Intel's avatar
ZiYing_Intel
Icon for Frequent Contributor rankFrequent Contributor
2 years ago

Hi,

Diagnostic

  1. Ensure the design meets timing requirements, especially in paths related to the Ethernet and reset signals.
  2. Test the Ethernet functionality with the temperature sensor IP alone, and then add Signal Tap instances incrementally to identify the point of failure.
  3. Use Signal Tap to monitor the Ethernet PHY reset signal duration during boot. Compare this duration against the PHY's datasheet requirements.
  4. Monitor the power supply voltages during boot using an oscilloscope to detect any noise or voltage drops.

Steps to Verify and Adjust Ethernet Reset Signal

1. Use Signal Tap to capture the reset signal and verify its duration during boot.

2. Modify the reset generation logic in your design to increase the reset signal duration. This might involve adding a counter to hold the reset signal active for a longer period.

3. Test with different reset durations to determine if a specific duration resolves the issue.

Best regards,

zying