A design of embedded Gigabit Ethernet interface

Gigabit Ethernet technology has become the mainstream now, and many appilications also require real-time transmission of high-speed data, so how to realize gigabit ethernet interface becomes a new topic. This paper proposes and implements an embedded system based on RTL8169SC and FPGA. PCI interface logic is embedded in FPGA, therefore the single FPGA includes both user logic and interface logic.The paper first introduces the hardware design of the system, including structure and features of RTL8169SC, the design of PCI logic, and then describes software design written by Verilog HDL in detail, including reset and initialization of the NIC (RTL8169SC), transmission and reception of data packets. After testing, the transmission rate can reach 300Mb/s, the results show that this design meets most requirements of the real-time transmission system and proves to be a practical design with low cost and good stability.