Pinout Description

Pinout description top side

J1 – Power jack

Barrel plug.

12V Input, please use a high quality power supply for stable operation.

J2 – Power port

Molex MicroFit 3.0 (alternative power input)

J3 – USB3

Pin	Description	Socket pin	Note
1	VUSB3-3	F54	3.3V (GPIO22: EN = 1, default = 1)
2	VUSB3-3	F54	3.3V
3	USB2_D_N	A11
4	USB2_D_P	A10
5	GPIO22	F54	Optional (R198)
6	GND
7	UPHY_RX1_N	C22
8	UPHY_RX1_P	C23
9	GND
10	UPHY_TX1_N	G22
11	UPHY_TX1_P	G23
12	GND

J4 – Ethernet

RJ45

Standard pinout.

J5 – CAM_LED

Pin	Description	Socket pin	Note
1	VCC_SRC		Max 1A
2	VDD_5V		Max 1A
3	GPIO35_PWM3	L50	Low side switch to GND, can be controlled with GPIO35_PWM3 or CAM1-MCLK (1.8-5V) or CAM2-MCLK (1.8-5V) (please see schematic image), Max 3.7A
4	GND

Please note that on REV 2 and below the J5 and J28 label printed on the PCB is swapped, this mistake is fixed in newer revisions.

Q13 (pin 3) is not over current protected (Max 3.7A).

Set GPIO35_PWM3 too low to activate Q13 (pin3).

As you can see, you can control the J5 pin 3 with three options.

The CAM1 and CAM2 control are intended to be set by your camera device

J6 – CAN1

JST-GH 1.25 mm

Pin	Description	Socket pin	Note
1	NC		Not powered
2	CAN1_TX	H61	2.5V center voltage, with CAN transceiver
3	CAN1_RX	B61	2.5V center voltage, with CAN transceiver
4	GND

CAN1 is RX/TX only and is not outputting power

J7 – I2C

PicoBlade 1.25 mm

Pin	Description	Socket pin	Note
1	3.3V
2	SCL	J61	3.3V, open drain
3	SDA	K61	3.3V, open drain
4	GND

J8 – FAN

PicoBlade 1.25 mm

Pin	Description	Socket pin	Note
1	GND
2	12V		1A
3	TACH	E54	1.8V input 100K pull up to 1.8V, fan speed tacho
4	PWM	K62	open drain output with 10k pullup to 12V

For the use of a 5V fan, there is an option to resolder a component appropriately.

Graphical user interface, diagram, schematic Description automatically generated

J10 – Debug port

JST-GH 1.25 mm

Pin	Description	Socket pin	Note
1	3.3V
2	UART3_TX	H62	3.3V, AGX Xavier debug console transmit
3	UART3_RX	K60	3.3V, AGX Xavier debug console receive
4	GPIO13_OUT	G7	3.3V, G7 (AGX Xavier ball), output from Jetson
5	GPIO4_IN	B59	3.3V, B59 (AGX Xavier ball), input to Jetson
6	GND

J11 – HDMI

Standard pinout, connected to DP-2

J12 – CAN0

JST-GH 1.25 mm

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.

J14 – MCU

JST-GH 1.25 mm

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.

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
5	UPHY_RX11_N	D13
6	UPHY_RX11_P	D12
7	GND
8	UPHY_TX11_N	H13
9	UPHY_TX11_P	H12
10	Vin		1A, 5V
11	USB1_D_N	C10
12	USB1_D_P	C11
13	GND
14	UPHY_RX6_N	B17
15	UPHY_RX6_P	B16
16	GND
17	UPHY_TX6_N	K16
18	UPHY_TX6_P	K17
19	GND
20	GND
21	GND
22	GND

Standard pinout (type A).

10Gb/s.

Power can be Enabled/Disabled with GPIO22

J17 – MICRO USB

Standard pinout.

Host and device mode supported.

Powered by power limiting switch with 500mA.

Alternatively, you can use the J29 connector, using the same pins.

J19 – CSI-2

Pin	Description	Socket pin	Note
1	VDD_3V3		3.3V
2	SDA-1		Connected to I2C_GP2_Dat_LVS or I2C_GP2_DAT depending on config. I2C bus number 1.
3	SCL-1		Connected to I2C_GP2_CLK_LVS or I2C_GP2_CLK depending on config. I2C bus number 1.
4	GND
5	CAM1_MCLK	J28	Connected to J28 CAM LED pin 3
6	CAM1_PWDN	K57	Can be controlled with PWM01_40Pin (GPIO_07), default configuration is high, open drain output with pullup 2.2k to 3.3V, this also connects to CAM2_PWDN.
7	GND
8	CSI_7_D1_P	C47
9	CSI_7_D1_N	C48
10	GND
11	CSI_7_D0_P	A44
12	CSI_7_D0_N	A45
13	GND
14	CSI_6_CLK_P	J44
15	CSI_6_CLK_N	J45
16	GND
17	CSI_6_D1_P	H46
18	CSI_6_D1_N	H45
19	GND
20	CSI_6_D0_P	K44
21	CSI_6_D0_N	K43
22	GND

Per special request, Auvidea can manufacture the board with CAM1_PWDN and CAM2_PWDN with pull up to 1.8V.

J20 – PCIe x4

Pin	Description	Socket pin	Note
1	VDD_3V3		3.3V
2	VDD_3V3		3.3V
3	VDD_3V3		3.3V
4	GND
5	PEX_CLK0_P	E15
6	PEX_CLK0_N	E14
7	GND
8	UPHY_TX2_P	K21
9	UPHY_TX2_N	K20
10	GND
11	UPHY_RX2_P	B21
12	UPHY_RX2_N	B20
13	GND
14	UPHY_TX3_P	H20
15	UPHY_TX3_N	H21
16	GND
17	UPHY_RX3_P	D20
18	UPHY_RX3_N	D21
19	GND
20	UPHY_TX4_P	J18
21	UPHY_TX4_N	J19
22	GND
23	UPHY_RX4_P	A18
24	UPHY_RX4_N	A19
25	GND
26	UPHY_TX5_P	G19
27	UPHY_TX5_N	G18
28	GND
29	UPHY_RX5_P	C19
30	UPHY_RX5_N	C18
31	GND
32	PEX_WAKE_N	A8
33	PEX_L0_RST_N	D10
34	GND
35	I2C_GP2_DAT_LVS	K61	3.3V (2.2k pullup)
36	I2C_GP2_CLK_LVS	J61	3.3V 2.2k (pullup)
37	PEX_L0_CRQ_N	E11
38	VDD_3V3		3.3V
39	VDD_3V3		3.3V
40	VDD_3V3		3.3V

J22 – ETHERNET

Standard pinout.

J24 – CSI-1

Pin	Description	Socket pin	Note
1	VDD		3.3V (5V optional)
2	I2C-GP5 (SDA)		3.3V (1.8V optional)
3	I2C-GP5 (SCL)		3.3V (1.8V optional)
4	GND
5	CAM2_PWDN	F57	Can be controlled with PWM01_40Pin (GPIO_07, socket pin F57), default configuration is high, open drain output with pullup 2.2k to 3.3V, this also connects to CAM1_PWDN
6	CAM2—MCLK		Connected to J28 CAM LED pin 3
7	GND
8	CSI_1_D1_P	J41
9	CSI_1_D1_N	J42
10	GND
11	CSI_1_D0_P	G41
12	CSI_1_D0_N	G42
13	GND
14	CSI_0_CLK_P	F43
15	CSI_0_CLK_N	F42
16	GND
17	CSI_1_D1_P	E39
18	CSI_1_D1_N	E38
19	GND
20	CSI_0_D0_P	E42
21	CSI_0_D0_N	E41
22	GND

Per special request, Auvidea can manufacture the board with CAM1_PWDN and CAM2_PWDN with pull up to 1.8V.

CSI default voltage is 3.3V, but it can be changed to 5V. To perform this modification, you need to move the bead from the 3.3V location (marked with the number 3 as shown in the picture) to the 5V location (marked with the number 5 as shown in the picture).

The same process applies to I2C, where you must move two beads to the desired location of 1.8 (1.8V) or 3.3 (3.3V).

This modification should be performed with care and some good soldering skills.

Auvidea does not cover damages inflicted by poorly performed modifications.

Please contact Auvidea for custom configurations.

Diagram Description automatically generated

J28 – SPI

SM08B-GHS-TB

Pin	Description	Socket pin	Note
1	VDD_5V		5V
2	VDD_3V3		3.3V
3	VDD_1V8		1.8V
4	SPI1_CS0	E55
5	SPI1_SCK	J57
6	SPI1_MOSI	D55
7	SPI1_MISO	A56
8	GND

Please note that on REV 2 and below the J5 and J8 label printed on the PCB is swapped, this mistake is fixed in newer revisions.

Diagram, schematic Description automatically generated

J33 – I2C

Pin	Description	Socket pin	Note
1	VDD_5V		5V
2	I2C_GP5_SCL	A53	3.3V (2.2k pullup)
3	I2C_GP5_SDA	C53	3.3V (2.2k pullup)
4	GND

J37 – PCIe x1

Pin	Description	Socket pin	Note
1	GND
2	GPIO17	A54
3	PEX_WAKE_N	A8
4	GND
5	PEX_L1_CRQ_N	D9
6	PEX_L1_RST_N	B9
7	GND
8	UPHY_RX0_N	A23
9	UPHY_RX0_P	A22
10	GND
11	UPHY_TX0_N	J23
12	UPHY_TX0_P	J22
13	GND
14	PEX_CLK1_N	F17
15	PEX_CLK1_P	F16
16	GND
17	VDD_3V3		3.3V
18	VDD_3V3		3.3V
19	GND
20	VDD_5V		5V
21	VDD_5V		5V
22	GND

J38 – VCC_SRC

Pin	Description	Socket pin	Note
1	VCC_SRC		12V
2	VCC_SRC		12V
3	VCC_SRC		12V
4	VCC_SRC		12V
5	GND
6	GND
7	GND
8	GND

5A total

J39 – USB2

Pin	Description	Socket pin	Note
1	GND
2	VDD_3V3		3.3V
3	D1_P	A10	Internal USB hub AND LM823 module share lane! HUB: USB2_D_P (socket pin A10)
4	D1_N	A11	Internal USB hub AND LM823 module share lane! HUB: USB2_D_N (socket pin A11)
5	VUSB2_3		5V 500mA (controlled by GPIO22 – EN=1)

This functionality is not available in standard configuration.

Per special request, Auvidea can manufacture the board with this function.

J41 – USB2

Pin	Description	Socket pin	Note
1	GND
2	VDD_3V3		3.3V
3	D2_P	A10	Internal USB hub, HUB: USB2_D_P(socket pin A10)
4	D2_N	A11	Internal USB hub, HUB: USB2_D_N (socket pin A11)
5	VDD_5V		5V

This functionality is not available in standard configuration (only AI version).

RGB LED

Pin	Description	Socket pin	Note
LED-R	GPIO14	L15	ON = 1, default = 0 (red)
LED-G	GPIO16	F9	ON = 1, default = 0 (green)
LED-B	GPIO11	B8	ON = 1, default = 0 (blue)

Pinout description bottom side

J18 – Wi-Fi (LM823: U13 and U14)

SM04B-GHS-TB

Pin	Description	Socket pin	Note
1	VDD_3V3
2	WPS_U13
3	WPS_U14
4	GND

J21 – Power button

J23 – I2S3

SM08B-GHS-TB

Pin	Description	Socket pin	Note
1	VDD		3V3
2	I2S3_DIN	J59	1.8V
3	I2S3_DOUT	K59	1.8V
4	I2S3_FS	C60	1.8V
5	I2S3_SCLK	C59	1.8V
6	GPIO24	J51	1.8V
7	GPIO19	K56	1.8V
8	GND

J25 – Force recovery button

J26 – Reset button

J27 – MicroSD UFS

Standard pinout.

J29 – USB 2.0

SM04B-GHS-TB

Pin	Description	Socket pin	Note
1	V_USB		5V 500mA (MCU control)
2	USB0-D N	F13
3	USB0-D P	F12
4	GND

Alternative connector for J17 (Micro USB), uses same pins.

J30 – UART5 + MCU

SM08B-GHS-TB

Pin	Description	Socket pin	Note
1	VDD		3.3V
2	UART_TXD		3.3V, to safety MCU
3	UART_RXD		3.3V, to safety MCU
4	LTE_INT		3.3V, to safety MCU
5	UART5_TX	J58	3.3V, output
6	UART5_RX	H58	3.3V, input
7	UART5_RTS	K58	3.3V, output
8	GND

J31 – Power out

SM08B-GHS-TB

Pin	Description	Socket pin	Note
1	VCC_SRC_FET		Input Voltage = 12V (always on)
2	VCC_SRC_FET		Input Voltage = 12V (always on)
3	VCC_SRC		12V 1A max
4	VCC_SRC		12V 1A max
5	VCC_SRC		12V 1A max
6	GND
7	GND
8	GND

J32 – UART1/I2C3

SM08B-GHS-TB

Pin	Description	Socket pin	Note
1	VDD		3.3V
2	UART1_TX	K53	3.3V
3	UART1_RX	K54	3.3V
4	GPIO_25_Out	D56	3.3V (output only)
5	GPIO_15_In	F10	3.3V (input only)
6	I2C_GP3_CLK	F53	3.3V (2.2k pullup)
7	I2C_GP3_DAT	E53	3.3V (2.2k pullup)
8	GND

J35 – Power out

SM04B-GHS-TB

Pin	Description	Socket pin	Note
1	VDD_5V		5V 1A max
2	VDD_5V		5V 1A max
3	GND
4	GND

J36 – I2S2

SM06B-GHS-TB

Pin	Description	Socket pin	Note
1	VDD_1V8		1.8V
2	I2S2_SDIN	F6	1.8V
3	I2S2_SDOUT	F5	1.8V
4	I2S2_FS	E4	1.8V
5	I2S2_CLK	G4	1.8V
6	GND

U13 – LM823-1463 bay

Bay for the additional Wi-Fi option. Default 3.3V, can be configured for 5V options.

U14 – LM823-1463 bay

Bay for the additional Wi-Fi option. Default 3.3V, can be configured for 5V options.

P6 – Jumper

Do not use. For production purposes only.

P17 – I2C4

Pin	Description	Socket pin	Note
1	I2C_GP4_CLK	D61	1k pullup to 1.8V
2	I2C_GP4_DAT	E60	1k pullup to 1.8V
3	GND

P18 – Alternative power button and monitoring pin

Pin	Description	Socket pin	Note
1	BUTTON_POWER_ON*	MCU	Low active, secondary power button
2	VIN_PWR_ON	MCU	High active, output for monitoring power up of main power control of carrier board
3	GND