2.18.2 Reset button (SW902)
The RESET button, SW902, is directly connected to the NXP PMIC PCA9450B. Holding the RESET button will force to reset the
NXP PMIC power outputs except
NVCC_SNVS_1V8
and
VDD_SNVS_0V8
on the EVK. The i.MX 8M Nano UL applications processor
will be immediately turned off and reinitiate a boot cycle from the OFF state.
2.19 User interface LED indicators
There are four LED indicators on the board. These LEDs have the following functions:
• Main Power Supply (D708)
— Green: The board is powered on.
— OFF: The board is powered off.
• System Status (D1) on 8MNANOD3L-CPU
— Green Blinking: CPU is running well.
— OFF: CPU is not running.
• M7 UART (D902/D903)
— D902 Green light flashing: The UART data transmitted to PC.
— D903 Orange light flashing: The UART data received from PC.
• A53 UART (D906/D905)
— D906 Green light flashing: The UART data transmitted to PC.
— D905 Orange light flashing: The UART data received from PC.
NXP Semiconductors
Specifications
i.MX 8M Nano UltraLite DDR3L Evaluation Kit Hardware User's Guide, Rev. 0, March 2, 2021
User's Guide
13 / 17