用8051实现一个usb的HOST,包括源程序和相关代码.-8051 with the realization of a usb HOST, including source code and related.

The LPC1769 is a Cortex-M3 microcontroller for embedded applications featuring a high level of integration and low power consumption at frequencies of 120 MHz. Features include 512 kB of flash memory, 64 kB of data memory, Ethernet MAC, USB Device/Ho