关键词: 片上可编程系统, PowerPC软处理器, AXI总线, 电子控制单元, 现场可编程门阵列

Abstract:

A new method of embedded vehicle information terminal based on SOPC(System on a Programmable Chip) and butterfly-storage is proposed to meet the requirement of vehicle display device, such as low-cost, small size, high performance and reliability. It took FPGA (Field Programmable Gate Array) as hardware carrier, and constructed LCD (Liquid Crystal Display) control unit based on PowerPC as softcore. The man-machine system is integrated as ECU (Electronic Control Unit) into automobile automatic control system, so that it can achieve the function of car state monitor and storage. The principle of the butterfly-storage system, the system scheme, the
 real-time requirement of automobile switching in display mode, LCD control timing and AXI(Advanced Extensible Interface) bus timing are analyzed and discussed. The timing and function are simulated, and it passed the test of hardware platform. The experimental data showed that the system can display real-time car-state and provide a smooth visual experience.

Key words: system on a programmable chip (SOPC), powerPC, advanced extensible interface (AXI) bus, electronic control unit (ECU), field programmable gate array (FPGA)