威盛8430 SOC芯片的数据手册，包含芯片的介绍 GPIO 上电时序，音视频解码 IIC IIS 内部寄存器。外围中断，LCD接口等-VIA 8430 SOC chip data sheet, including the introduction of chip power GPIO timing, audio and video decoding IIC IIS internal registers. External disruption, LCD interface, etc.

An RS232 port controls a TSA5512 via a PIC16F84 This allows a TV tuner to be scanned across its full range. 4MHz crystal for the PIC, the tuner has it s own internal crystal. Use a MAX232 for level shifting. SCL RB6 SDA RB5 Din RA1 Dout