Chapter 2 – Hardware Information14IoT Gateway System AIOT-QA2.4.1 JTAG Programming Port Box Header (CN1)192103.3VGNDGNDNCGNDTMSTCKTDOTDITRST#Pin Signal Pin Signal1 +3.3V 2 TMS3 Ground 4 TCK5 Ground 6 TDO7 NC 8 TDI9 Ground 10 TRST#2.4.2 Battery Box Header (CN2)3VGNDPin Signal1 3V2 Ground