... port; 4,100 M network interface 6, TV and CVBS output interface; 7, SD card interface 8, RTC rechargeable battery; 9 ... headphone jack, 1.5W speaker interfaces; 15, IIC ADC SPI Interface 16,10-bit code switch BOOT Stubbs; 17, SIM300 GPRS ... module interface 18, SIRFIII GPS module interface (including the antenna interface);19, Hayward WIFI module interface 20,50 PIN LCD interface, the development ...