wizphy_getphylink() not consist with LINKLED pin in W5500 sometimes

I try to monitor the link state in W5500 about every 5 seconds. Sometimes will get the OFF state but the cable is still plugged. So, I setup up a logic analyzer with trigger mode to monitor the LINKLED(pin 25) directly. The LINKLED still keep in LOW when I get the OFF state from register. Any suggestion?