Hi Experts,
My customer is facing an issue that PHY does not transmit the data when receiving JAM signal.
- 10 Mbps Half-Duplex
- The issue occurs only when connecting the specific switching hub
- Once this issue occurs, the reset to PHY is the only solution to recovery.
- MDIO access can be working even when this issue occurs.
- LINK is still established even when this issue occurs but transmit is not possible.
- Confirmed this issue on several units.
- This is not always occurring when receiving JAM signal.
- After this issue occurred, customer dumped the registers and confirmed that nothing was changed.
Below is the waveform when this issue occurs.
Do you have any information why this issue occurs? We can share the register settings in off-line.
Regards,
Uchikoshi
