X221D & X221D-AI TECHNICAL REFERENCE MANUAL
VERSION: 0.3
Page 14 of 40
5.11
J11 – HDMI
Standard pinout, connected to DP-2
5.12
J12 – CAN0
JST-GH 1.25mm
Pin
Description
Socket pin
Note
1
5V
C61
max 500mA (with current limiting switch), can be controlled with
CAN0_STBY (GPIO09), socket pin C61 with low = on, high = off, pin
is also reverse power protected
2
CAN0_H
F58
2.5V center voltage, with CAN transceiver
3
CAN0_L
D59
2.5V center voltage, with CAN transceiver
4
GND
You can set a solder ball to enable 120Ohm Termination resistor as shown in the picture below.
5.13
J14 – MCU
JST-GH 1.25mm
Pin
Description
Socket pin
Note
1
3.3V
2
MCU_TX
3.3V, MCU console debug port, transmit, 115200 baud, 8N1
3
MCU_RX
3.3V, MCU console debug port, receive, 115200 baud, 8N1
4
SWCLK
ST-Link programming interface of MCU
5
SWDIO
ST-Link programming interface of MCU
6
GND
With the AI model of the X221 you have access to the safety MCU features. Please contact Auvidea
for more information.
The basic MCU of the non AI models only handle power up functionality.
5.14
J15 – 2x USB 3.1
Nexus-3815RFY
Pin
Description
Socket pin
Note
1
Vin
1A, 5V
2
USB3_D_N
G10
3
USB3_D_P
G11
4
GND
