The W55RP20 examples with CircuitPython use W55RP20-EVB-Pico - ioNIC module built on RP2040 and WIZnet's W5500 Ethernet chip.
Please refer to Getting Started for how to configure development environment or examples usage.
WIZnet-ioNIC-Circuitpython
┣ examples
┃ ┣ loopback
┃ ┃ ┣ TCP
┃ ┃ ┗ UDP
┃ ┗ ping
┣ libraries
┃ ┣ wiznet5k_pio.py
┃ ┣ adafruit_pio.py
┃ ┗ adafruit_ticks.py
┗ static
┣ documents
┣ firmwares
┗ images