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DP83848J: Multiple automatic disconnections

run Ren
Prodigy 220 points
Part Number: DP83848J

Hi:

our product USES TI DP83848NRATR, the main platform RK3288 plus DP83848NRATR.During Ethernet use, the machine automatically disconnects and reconnects for many times, and eth0 switches down up several times in a day. In theory, the updateInterface will only be triggered by plug and unplug state or boot detection Below is our schematic diagram, please give some Suggestions, thank you!