Ethernet Packet to USB Data Transfer Bridge ASIC with Modbus Transmission Control Protocol Based on FPGA Development Kit

Abstract

This paper proposes an Ethernet packet transformation and transmission architecture between Modbus transmission control protocol (Modbus TCP) and universal serial bus (USB) 3.0 developed with a field-programmable gate array (FPGA) development kit. The proposed architecture is used to complete packet transformation and transmission between Ethernet and USB 3.0 for application in induction motor (IM) control. The Ethernet receiver receives and analyses Modbus TCP packets and sends the source address, destination address, IP header, and Modbus TCP header to the register to verify the correctness of the packet. The Modbus TCP packet is stored in static random access memory and awaits access through a USB 3.0 module. An FPGA development kit (Intel DE10-Standard) is used for functional verification. The measured results show that the latency, throughput, and dynamic power are 18.845 μs, 950.31 Mbps, and 142.17 mW, respectively, at a voltage of 1.8 V and an operating frequency of 125 MHz. The main advantage is that the proposed Ethernet and USB bridge performs high throughput and short latency with FPGA development kit and that an application specific integrated circuit (ASIC) is provided with low power consumption. The robustness and convenience of the proposed ASIC are especially advantageous. The motivation is to resolve an existing problem that Ethernet and USB operate on different platforms.