ETH WIZ Click

How does it work?

ETH WIZ Click is based on the W5500, a fully-featured high-performance 10/100 Ethernet controller from WIZnet designed for embedded applications where performance and flexibility are required. The W5500 module employs a variety of solutions to reduce the target MCU’s memory load and enable a stable and secure Internet connection. High-speed network communications are realized through a serial interface in variable-length data mode configuration. The module has 32KB of internal memory for TX/RX buffers, where each block is register-configurable. Reduced power consumption is achieved with Wake on LAN and power-down modes. Automatic handshaking, retransmitting on collision, and automatic rejection of erroneous packets are also supported. The W5500 also supports HP Auto-MDIX, allowing direct connections or cross-over LAN cables on the onboard RJ-45 connector.

This Click board™ communicates with the target MCU using an SPI/QSPI serial interface with a clock rate of up to 80MHz, supporting the most common SPI modes, SPI Mode 0 and 3. Besides, it has three PMODE0-2 selectable jumpers for selecting the PHY network operating mode. As a default, they are populated with 0-ohm resistors at position 1, which means both 10BASE-T and 100BASE-Tfull/Half-duplex capable, and Auto-negotiation enabled.

This ETH Wiz Click can reset the W5500 through a hardware reset pin labeled RST and also provides a programmable interrupt feature on the INT pin used for some features like Wake on LAN. From the RJ-45 sides, two LEDs labeled LINK STAT and CRS stands for visual network status indicators: Link and Transimission indicators.

This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels.

Specifications

Pinout diagram

This table shows how the pinout on ETH WIZ Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
	NC	1	AN	PWM	16	NC
Reset	RST	2	RST	INT	15	INT	Interrupt
SPI Chip Select	CS	3	CS	RX	14	NC
SPI Clock	SCK	4	SCK	TX	13	NC
SPI Data OUT	SDO	5	MISO	SCL	12	NC
SPI Data IN	SDI	6	MOSI	SDA	11	NC
Power Supply	3.3V	7	3.3V	5V	10	NC
Ground	GND	8	GND	GND	9	GND	Ground

Onboard settings and indicators

ETH WIZ Click electrical specifications