主芯片采用AT89C2051，功能是对LED256级PWM调光，并采用DMX512协议，和主控通信 内部有原理图和PCB文档希望对LED行业的朋友有点帮助-The main chip AT89C2051, function is LED256-level PWM dimming, and the use of DMX512 protocol, and controlling internal communication schema