13. USIM1_CLK DO USIM1 clock 1.8V/3.0V Open 95. GND G Ground - GND 14. USIM1_VDD PO USIM1 output voltage 1.8V/3.0V Open 15. RESET_N DI System reset signal 1.28V Open 16. NET_STATUS DO Output PIN as LED control for network status 1.8V Open 17. MAIN_RXD DI Main UART receiv...