SPI Communication mode between Arduino Ethernet and EVAL-ADAU1701MINIZ

Projects Networking, Protocols, and Devices
6

This pulls the w5100 CS low three times also.

 //pull low clatch three times
  digitalWrite(ETHCS, LOW);
  digitalWrite(ETHCS, HIGH);
  digitalWrite(ETHCS, LOW);
  digitalWrite(ETHCS, HIGH);
  digitalWrite(ETHCS, LOW);
  digitalWrite(ETHCS, HIGH);
  //end pull low clatch three times

If you are using D10 for anything, don't. It is the w5100 CS.

edit: This is from the Arduino Ethernet page:

NB: Pins 10, 11, 12 and 13 are reserved for interfacing with the Ethernet module and should not be used otherwise. This reduces the number of available pins to 9, with 4 available as PWM outputs.

http://arduino.cc/en/Main/ArduinoBoardEthernet