X221, -LC, -AI
TECHNICAL REFERENCE MANUAL
VERSION: 1.4
Page 13 of 38
SECTION 5
Pinout description
5.1
J2 - POWER PORT
Molex Micro Fit 3.0 (alternative power input)
5.2
J4 - Ethernet
RJ45
Standard pinout.
5.3
J5 - MCU UART
JST-GH 1.25mm
Pin
Description
Socket pin
Note
1
3.3V
2
UART_TX
Safety MCU pin 39
3.3V, MCU user UART to connect to LTE module
3
UART_RX
Safety MCU pin 40
3.3V, MCU user UART to connect to LTE module
4
GND
5.4
J6 - CAN1
JST-GH 1.25mm
Pin
Description
Socket pin
Note
1
5V
max 500mA (with current limiting switch)
2
CAN_H
B61
2.5V center voltage, with CAN transceiver
3
CAN_L
H61
2.5V center voltage, with CAN transceiver
4
GND
5.5
J7 - I2C
Pico blade 1.25mm
Pin
Description
Socket pin
Note
1
3.3V
2
SCL
J61
3.3V, open drain
3
SDA
K61
3.3V, open drain
4
GND