根据黑金动力编写的vhdl版本uart，很适合初学者移植使用-According black gold vhdl written power version uart, very suitable for beginners transplant use

通信扩频码GOLD码序列的产生，码长度可以手动设置，VHDL语音实现。-GOLD generate communication code sequence spreading code, the code length can be set manually, VHDL voice implementation.