Note: The analog pins A0 to A5 are not connected to the W5100 chip. LEDs for indication of various status (Link speed, power, collision etc.).SD_CS – chip select for the SD card is derived from this header.Expansion header to access Arduino UNO GPIOs.Ethernet connector – You have to connect the RJ45 ethernet cable here.So, you can connect both UNO and Arduino Mega to the W5100 shield without worrying about the compatibility of IO line voltage. Voltage regulator – W5100 operates at 3.3 V.Pressing the reset button resets both Arduino UNO and the Ethernet shield. RESET button – You will short the reset Pin to the ground when you press the button.The LEDs help you to quickly understand the issue or status just by looking at them.īoard details of W5100 Arduino Ethernet Shield LED indications for the status include Link, speed, collision, duplex, etc.It has 16 kbytes of memory for buffering, receiving and transmitting messages.The shield helps in auto-negotiation (for both half and full duplex operation).
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