Feature Description

Crypto authentication chip

The crypto chip can be used for authentication, software licensing and copy protection.

Safety MCU

Features

Ability to control power management of carrier board and AGX Xavier

Select boot chain (GPIO)

Retrieve internal status (SPI)

Monitor internal power rails (I2C)

For further details, refer to NVIDIA documentation:

Jetson Xavier OEM product design guide (NVIDIA Jetson download center: 15.5 Safety MCU)

Block diagram of Safety MCU

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Schematic of Safety MCU section

Please check that your model has a Safety MCU. If your models do not have a safety MCU, you will have the basic MCU.

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Pinout basic MCU

STM32L031G6U6TR

Pin	Description	Socket pin	Note
1	3V3_AO		3.3V
2	MCU_LED		5V tolerant
3	ForceRec
4	MCU_RESET		With 3.3V pullup
5	3V3_AO		3.3V
6	EFM8_BUTTON_POWER_ON*
7	EFM8B10_D_ONKEY_N
8	PA6
9	EFM8_ACOK
10	EFM8_PSHOLD
11	EFM8_FORCE_SHUTDOWN
12	EFM8_RST_MON
13	PA7		USB0_VBUS/2
14	/PFO
15	SYS_RST
16	GND
17	3V3_AO		3.3V
18	3V3_AO		3.3V
19	MCU_TX		Connected to J14 pin 2
20	MCU_RX		Connected to J14 pin 3
21	SWDIO		Connected to J14 pin 5
22	SWCLK		Connected to J14 pin 4
23	USB0_EN
24	EFM8_VIN_PWER_ON
25	EFM8_MODULE_POWER_ON
26	EFM8_POWER_BTN_ON*
27	BOOT0
28	GND