w5300 PHY link 확인 방법 관련

W5300 을 사용하고 internal PHY를 설정하여 사용중입니다.
ctlwizchip() 함수에서 W5300은 CW_GET_PHYLINK 가 지원이 안되고 있습니다.
이더넷 케이블 유무과 PHY상태를 알기 위해 어떤 방법이 있나요?

I can not find link status in the datasheet, thus it seems, like in W5100, you can not know the status of link unless you connect link LED to the controller and read it status separately.

Edit: link LED will only show status of the sense of incoming link (RX), not sure it will show TX connectivity. Therefore if you want to reliably know status of “cable plugged in” you need physical switch in the cable connector!