![Intrinsyc Open-X 8M Скачать руководство пользователя страница 23](http://html1.mh-extra.com/html/intrinsyc/open-x-8m/open-x-8m_user-manual_2081918023.webp)
Open-X™ 8M Development Kit based on the NXP i.MX8™ Processor User Guide Version 1.0
23
Copyright Intrinsyc Technologies Corporation
Buttons and LEDs
There is one user interface, one reset and one power button on the Open-X 8M carrier board.
Figure 3-13 Buttons and LEDs
The chip supports the use of a button input signal to request main SoC power state changes (i.e. ON
or OFF) from the PMU.
PWR button (S2000) can be configured as debounce, OFF-to-ON time, and max timeout via
software. See NXP i.MX8 reference manual (IMX8MDQLQRM).
In the ON state, holding the RST button (S2001) will force all power rails to go low except the
VDD_SNVS_3V3 on the Open-X 8M carrier board. The i.MX 8MDQLQ applications processor will be
immediately turned off and reinitiate a boot cycle from the OFF state when the RST button is released.
There are two status LEDs and two user LEDs on the carrier board.
The status LEDs have the following functions:
•
Green LED ON – The CPU is running in overdrive mode.
•
Green LED OFF – The CPU is not in overdrive mode.
•
Red LED ON – Power is applied to the 12V DC JACK and power switch (SW400) is ON.
•
Red LED OFF – The board has no power applied.