EPA (Ethernet for Plant Automation) communication IP (Intellectual Property) core and system on chip (SOC) based on AMBA (Advanced Microcontroller Bus Architecture) bus structure

Abstract

The invention discloses an EPA (Ethernet for Plant Automation) communication IP (Intellectual Property) core and a system on chip (SOC) based on an AMBA (Advanced Microcontroller Bus Architecture) bus structure. An EPA protocol stack is encapsulated into an IP hard core, and the IP core comprises an EPA module, an AHB (Advanced High-performance Bus) interface module, a DMAC (Direct Memory Access Controller) module, a data communication interface module and a register module. The EPA protocol stack is hooked on an AMBA bus, and constructs the SOC together with units such as a CPU (Central Processing Unit), an SRAM (Static Random Access Memory) and a FLASH. The EPA communication IP core and the system on chip have the beneficial effects that the technical advantages of an ARM (Advanced RISC Machine)+FPGA (Field Programmable Gate Array) platform are realized, and the defects of high cost, easiness in cracking a core technology and the like in the platform are successfully overcome; based on the implemented efficient interface-open SOC, a communication system based on EPA is more stable and reliable; and by adopting the IP core provided by the invention, an EPA communication function is realized, and a redundant function and an accurate clock synchronizing function are supported.

Description

technical field [0001] The invention belongs to the technical field of industrial automation communication, and in particular relates to an EPA communication IP core and an on-chip system based on an AMBA bus structure. Background technique [0002] The EPA communication system is a communication system composed of EPA protocol stack as the core, microprocessor unit, MAC unit and storage unit. At present, the EPA communication system is mainly based on microprocessor platforms such as ARM, FPGA or ARM+FPGA. The EPA protocol stack is implemented on the microprocessor, and the peripheral modules are composed of network card chips, physical layer chips and memory modules. The ARM-based EPA communication system implements the EPA protocol stack by software, which has high-speed and convenient data processing and computing capabilities, but is relatively weak in data transmission efficiency, logic processing capabilities, and execution speed. The EPA communication system based o...

AI Technical Summary

Problems solved by technology

From a market perspective, the cost of FPGA chips is high, and it is very expensive to build a large-scale EPA communication system, so the market prospect will be limited due to cost

From the perspective of technology and application, the ARM+FPGA platform has the risk of technology leakage, and its integration, reliability and stability are not as high as integrated circuits.

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