非常好的44b0原理图，在做设计可以参考以下-very good 44b0 diagram, designed to be done in reference to the following

关于44b0的开发板的pcb和sch图可在protel下直接运行 只需自己建立文件库即可-44b0 on the development board and the pcb sch Protel plans in direct their operations only the document can be established

三星ARM7内核 44B0开发板全套原理图 包括以太网和usb接口 还有板载flash芯片原理 可做开发参考-Samsung ARM7 core 44B0 development board complete schematic, including Ethernet and usb port there is on-board flash chips can do the development of reference principle

三星ARM7内核 44b0开发板的推荐扩展电路原理图 包括音频 现场总线接口 液晶屏触摸屏 数码管 按键 电机等等 可做开发参考-Samsung ARM7 development board' s recommendation 44b0 kernel extension circuit schematics including audio field bus interface, digital LCD touch-screen control buttons, and so do mot