Ƶлָ DWIN_7A 
 
 EX:  DWIN_7A (1,0,0);(AA 7A 01 00 00 CC 33 C3 3C )
 	     
 01 -ģʽWork_Mode,0x00=HMI 0x01=Video
     00 -ƵʽVideo_Mode,0x00=PAL 0x01=NTSC
     00 -źVideo_CH,0x00=CVBSӿƵź 0x01=SƵź
     лΪPALʽ,CVBSӿƵź,ʱֻʾƵ,κն˹
--------------------------------------------------------------------------*/
extern void DWIN_7A (u8 Work_Mode,u8 Video_Mode,u8 Video_CH);