ARM2440核心板PCB版图，和外围底板的原理图和PCB图，为嵌入式提供开发-ARM2440 core board PCB layout

这是本人开发的ARM9核心板的底板，包括原理图和PCB文件，经过实际应用，运行正常！各位同僚可参考借鉴！-This is my core ARM9 development board floor, including schematic and PCB files, through the practical application, to run properly! Colleagues can refer to learn!

AT91SAM9G20开发板原理图和PCB, 该开发板可运行LINUX程序，网口，串口，SPI和USB扩展接口-AT91SAM9G20 development board schematics and PCB, the board can run LINUX program, network port, serial port, SPI and USB expansion interface