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. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development.
Specifications
Type Ethernet Applications Can be used for industrial automation systems, IP set-top boxes, VoIP/Video phone systems, security systems, home network and gateways, test and measurement equipment, and more On-board modules W5500 - fully-featured high-performance 10/100 Ethernet controller from WIZnet Key Features Hardwired TCP/IP protocols, power-down mode, wake-on-LAN over UDP, high speed SPI interface, auto-negotiation feature, network LED indicators, reduced power consumption, and more Interface GPIO,SPI Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V
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
| Label | Name | Default | Description |
|---|---|---|---|
| LD1 | PWR | - | Power LED Indicator |
| LD2 | CRS | - | Transmission LED indicator |
| LD3 | LINK STAT | - | Link Status LED Indicator |
| J1 | PHMODE0 | Right | PHY operation mode sellection: Left position Half-duplex, Right position Full-duplex |
| J2 | PHMODE1 | Right | PHY operation mode sellection: Left position 10BASE-T, Right position 100BASE-T |
| J3 | PHMODE2 | Right | PHY operation mode sellection: Left position Auto-negotiation disabled, Right position Auto-negotiation enabled |
ETH WIZ Click electrical specifications
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | - | 3.3 | - | V |
| Ethernet Bandwidth | - | 10/100 | - | Mbps |
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