KC868-A8 Ethernet Problem

[Namil Heo]

Hello, i have a KC868-A8 Board connected with ethernet cable but the port suddenly stopped working.

# define ETH_ADDR        0
#define ETH_POWER_PIN  -1
#define ETH_MDC_PIN    23
#define ETH_MDIO_PIN  18
#define ETH_TYPE      ETH_PHY_LAN8720
#define ETH_CLK_MODE  ETH_CLOCK_GPIO17_OUT

IPAddress local_ip(192, 168, 0, 144);
IPAddress gateway(192, 168, 0, 254);
IPAddress subnet(255, 255, 255, 0);

  ETH.begin(ETH_TYPE, ETH_ADDR, ETH_MDC_PIN, ETH_MDIO_PIN, ETH_POWER_PIN, ETH_CLK_MODE);
  if (ETH.config(local_ip, gateway, subnet, dns, dns) == false) {
    Serial.println("EtherNet failed.");
  }else{Serial.println("EtherNet Success.");}

  Serial.println("Connected");
  Serial.print("IP Address:");
  Serial.println(ETH.localIP());
  delay(500);