Connectors Designations Tiger City IMX Industrial Computer with Linux OS Principle of designating connector pins Each pin designation is composed of 2 parts. Part 1 Choose a letter stating the type and purpose of the connector, chosen individually with ease of use by the user in mind. General connectors D - digital input pin H - digital input/output pin U - universal input/output pin G - ground potential  RS485 A - A pin of the connector B - B pin of the connector RS232 T - Tx pin of the connector R - Rx pin of the connector 1-Wire 5V - +5 V voltage 1W - 1-Wire data Part 2 Choose a digit representing the pin on the connector. In case of more than 10 pins on the connectors, letters should be used. Connector designations for IMX8 Eagle designation Documentation designation Digital inputs connectors 1 G 2 D1 3 D2 4 D3 5 D4 6 D5 Digital inputs/outputs connectors 1 H1 2 H2 3 H3 4 G 5 H4 6 H5 7 H6 8 H7 Universal inputs/outputs connector 1 U1 2 U2 3 G 4 U3 5 U4 RS485 1/2 connectors 1 A1 2 B1 3 G 4 A2 5 B2 RS485 3/4 connectors 1 A3 2 B3 3 G 4 A4 5 B4 RS232 1/2 & 1-Wire connectors 1 G 2 T1 3 R1 4 T2 5 R2 6 1W 7 5V 8 G