DP83848I can become a problem if it receives a large number of packets in an instant (network storm), as described below
- PHY link & Act lights off.It also reboots because the device receives excessive packets during a network storm, resulting in Watchdog time out
- After the reboot, remove the network cable from the device to the modem and use the computer to connect directly to the device. The PHY link & Act light is still off
- MCU now reads reg<0x0001> bit 2 Link Status. Gets 0
A debug firmware was later written to reboot the entire device when the Link Status status is 0 for 10 minutes.
The results of the tests do resolve the above problems, but the following problems occur:
- When device is unable to know that the Link Status is 0, it is disconnected or PHY lost
2., if resolved in the above manner, will always reboot the equipment when the production or installation of the LAN cable is not connected
Do you have any suggestion?
