Hi,NXP
I'm currently encountering a connection issue with the SJA1105. I'm using S32K3 + SJA1105 + TJA1103.
At present, the data sent from the PHY to the SJA1105 can be forwarded to other ports, and the S32K3 can also receive the data from the SJA1105, and the data is correct.
However, after the S32K3 sends data to the SJA1105, the SJA1105 does not forward the data to other ports. I can see that there is a correct waveform received on the RXD pin of Port 0, but no waveforms are emitted from other ports.
What could be the possible problems? Do you have any suggestions?
Below are my hardware topology and script configurations.My script is modified using simplePQRS.py
Best Regards,
xianlong
Thanks for your support. The RX_ER of my SJA1105 is not connected to ground
Hi,
hard to suggest based on info provided. A topology and script modification looks correct.
Quick tip, be sure you have RX_ER grounded if not used on switch port 0.
To comment more please provide more info.
Could you share your full schematic, or part for S32K3 + SJA1105 + TJA1103 connection at least?
Could you share your sja1105_simple.py?
What kind of traffic do you have?
BR, Petr