SoPC总线协议跨芯片扩展的设计与实现
[Abstract]:With the development of embedded system, programmable on-chip system (System-on-a-Programmable-Chip, SoPC) has become the mainstream of embedded system development, and the demand for SoPC function is higher and higher. More complex SoPC is necessary. On the basis of the existing platform, the SoPC based on single chip resource can no longer meet the expected functional requirements. Therefore, it is of great significance for the future development of SOPC to extend the SoPC bus protocol across chips so as to obtain more out-of-chip resources to design a more complex SoPC,. The key to extend the intra-chip bus to realize the data transmission between chips lies in the processing, sending and receiving of the on-chip bus request, which is the main difficulty in the design. In this paper, we mainly study the extension of SoPC image line protocol across chips, that is, the system bus on a chip is extended to the outside chip to access the resource of the chip. By analyzing the development of cross-chip communication mechanism at home and abroad, studying the principle and parallelism of AXI (Advanced extensible Interface) bus protocol and the characteristics of serial communication interface, the cross-chip extension of SoPC on-chip bus is designed and realized. The system architecture of the whole bus extended SoPC is given, and the design of each module of the custom bus extending AOC (AXI Over Chip) IP core (Intellectual Property core) is described in detail. Local SoPC is built on XilinxZYNQ-7000 FPGA (Field Programmable Gate Array) chip and remote SoPC, is built on Xilinx Vhtex-7 FPGA chip. Local SoPC can access remote SoPC resource based on AOC IP core. In addition, parallel communication and serial communication are used to realize data transmission between chips. The system performance of the whole bus extended SoPC is tested and evaluated based on the two communication methods. The custom AOC IP core is the main part of the design. The code design of the whole AOC IP core is realized by using the Verilog hardware description language. The FPGA prototype verification is completed based on the ZC706 development board of Xilinx Company and the VC707 development board, which verifies the correctness and feasibility of the design. This design not only meets the expected design requirements, but also greatly improves the main performance of the system. This paper completes the cross-chip extension of SoPC bus protocol, which can reduce the design cost, improve the utilization, performance and expansibility of the system. It can make multiple TPGA chips tightly coupled under the unified SoPC structure. It is of great engineering significance to design large scale SoPC.
【学位授予单位】:东南大学
【学位级别】:硕士
【学位授予年份】:2015
【分类号】:TN47
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