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DP83TC812S-Q1: dp83tc812s-q1 cannot detect the up status

Part Number: DP83TC812S-Q1
Other Parts Discussed in Thread: DP83TC811S-Q1,

Dear TI engineers,

We use dp83tc812s-q1 as automotive Ethernet phy in the new TBOX product, SCH is as shown below, but there is a problem that the SOC cannot detect the network cable connection, when we re-insert the network cable, it basically cannot detect the "up" state, we read the value of the register 0x10 and it shows that it is in down state. The same circuit design uses dp83tc811s-q1 to detect the network cable connection normally, whether it is in master or slave mode. Can you help to check if there is something wrong with our design as we haven't made any changes to the software, thanks a lot!