Wiznet makers

Pinout & Configuration

key features 

Wiznet W5500

1. Integrated TCP/IP Protocol Stack: The W5500 is equipped with a hardwired TCP/IP protocol stack, which supports TCP, UDP, IPv4, ICMP, ARP, IGMP, and PPPoE protocols, streamlining the implementation of network communication.
2. SPI Interface: It features an SPI (Serial Peripheral Interface) that allows for fast communication with a host processor, like an STM microcontroller.
3. Socket Flexibility: Provides up to 8 independent sockets that can be used simultaneously, enabling efficient network management and multi-connection capability.
4. Internal Memory: Comes with 32K bytes of internal memory for data buffering, reducing the need for extensive external memory.
5. Power Efficiency: Its low power consumption makes it suitable for power-sensitive applications, especially in IoT devices.
6. Network Security: Includes basic security features through IP filtering and MAC address filtering to prevent unauthorized access.

STM32H7 Microcontroller

1. High Performance: The STM32H7 series is powered by Arm Cortex-M7 cores, reaching speeds of up to 480 MHz, which makes it one of the highest-performance microcontrollers in the STM32 family.
2. Rich Connectivity: Besides Ethernet, it supports a variety of connectivity options including USB, CAN, and camera interfaces, providing flexible options for building complex applications.
3. Advanced Memory Architecture: Features dual Flash memory banks and extensive RAM (up to 1 MB), which supports complex operations and quick data processing.
4. Enhanced Graphics Features: Includes a Chrom-ART Accelerator™ for enhanced graphic capabilities, which is useful for applications requiring rich interface displays.
5. Robust Security Features: Offers hardware-based security features such as a cryptographic acceleration and a secure memory area to protect against attacks.
6. Wide Range of Packages and Temperature Grades: Available in multiple packages and temperature grades to suit various application needs from industrial to consumer.

usbd_cdc_if.c 

static int8_t CDC_Receive_HS(uint8_t* Buf, uint32_t *Len)
{
               ...
}

uint8_t CDC_Transmit_HS(uint8_t* Buf, uint16_t Len)
{
	...
}

Please refer to Bruno's article below for hardware information.

https://maker.wiznet.io/bruno/projects/designing%2Dan%2Dethernet%2Dmodule%2Dby%2Dconnecting%2Da%2Dw5500%2Dto%2Dan%2Dstm32h7%2D100%2Dpin%2Dmcu%2Dcircuit%2Ddesign%2Dsection/?serob=rt&serterm=year