DFR0342 W5500 Ethernet Reference: API & Pinout

Library

WIZ Ethernet Library: Required for W5500 compatibility. Download here and replace the original Ethernet library in Arduino IDE 1.0.x/1.5.x.
Arduino IDE v1.7: Built-in "Ethernet 2" library supports W5500 (no external libraries needed).

Principle

What is a W5500 chip?

The W5500 chip is a Hardwired TCP/IP embedded Ethernet controller that provides easier Internet connection to embedded systems. W5500 enables users to have the Internet connectivity in their applications just by using the single chip in which TCP/IP stack, 10/100 Ethernet MAC and PHY embedded.

WIZnet‘s Hardwired TCP/IP is the market-proven technology that supports TCP, UDP, IPv4, ICMP, ARP, IGMP, and PPPoE protocols. W5500 embeds the 32Kbyte internal memory buffer for the Ethernet packet processing. If you use W5500, you can implement the Ethernet application just by adding the simple socket program. It’s faster and easier way rather than using any other Embedded Ethernet solution. Users can use 8 independent hardware sockets simultaneously.

SPI (Serial Peripheral Interface) is provided for easy integration with the external MCU. The W5500’s SPI supports 80 MHz speed and new efficient SPI protocol for the high speed network communication. In order to reduce power consumption of the system, W5500 provides WOL (Wake on LAN) and power down mode.

POE (Power Over Ethernet)

This board supports POE power supply, so it doesn’t need any other power source if you use an active ethernet connection. For more information please check: POE (Power Over Ethernet)Wikipedia.

Version Update

Compared with V1.0, V2.0 adopts an isolated power supply design instead of the original non-isolated architecture, improving overall stability and reliability.

DFR0342-Board-Size

This board has a POE power supply unit whose voltage can reach up to 50V. Although it is not harmful for humman beings, please do not touch the circuit borad with your hands or other conductors since there are some low-voltage circuits on the board that cannot bear such high voltage. Otherwise, product damage may occur.

The transformer and power chip used by this mainboard will generate a lot of heat in high-load using, so please use the product in a good heat dissipation environment to avoid product damage or high temperature scald caused by overheating.

Power Supply

POE: IEEE 802.3af standard PSE power supply
USB: micro USB
VIN power supply: external 7-23V power (Marked on PCB)
5V Pin: 5V power

Automatically select the highest voltage as power input.

Reference