Seco Qseven Q7-C26 User Manual page 40

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devices that must become inactive during S3 (Suspend to RAM) power state. This signal is managed by the on-board STM32 Embedded Controller.

SUS_S5#: S5 status output, active low, +3.3V_ALW electrical voltage signal. This signal is used, on the carrier board, to shut off the power supply to all the devices

that must become inactive only during S5 (Soft Off) power state. This signal is managed by the on-board STM32 Embedded Controller.

SLP_BTN#: Sleep button Input, active low +3.3V_ALW

board, to trigger the transition of the module from Working to Sleep status, or vice versa. It can be left unconnected if not used on the carrier board. This signal is

managed by the on-board STM32 Embedded Controller.

LID_BTN#: LID button Input, active low +3.3V_ALW

board, to trigger the transition of the module from Working to Sleep status, or vice versa. It can be left unconnected if not used on the carrier board. This signal is

managed by the on-board STM32 Embedded Controller.

3.2.19

Miscellaneous, Thermal Management and Fan control signals

Here following, a list of Qseven® compliant signals that complete the features of Q7-C26 module.

SMB_CLK: SM Bus control clock line for System Management. Bidirectional signal, electrical level +3.3V_RUN

SMB_DAT: SM Bus control data line for System Management. Bidirectional signal, electrical level +3.3V_RUN

SMB_ALERT#: SM Bus Alert line for System Management. Bidirectional signal, active low, electrical level +3.3V_RUN. Any device place on the SM Bus can drive this

signal low to signal an event on the bus itself.

GP0_I2C_CLK: general purpose I2C Bus clock line. Bidirectional signal, electrical level +3.3V_RUN with a 2.2k

GP0_I2C_DAT: general purpose I2C Bus data line. Bidirectional signal, electrical level +3.3V_RUN with a 2.2k

WDTRIG#: Watchdog Trigger Input. It is an active low signal, +3.3V_RUN electrical level. This signal can be used to reset and restart, via Hardware, the internal

Watchdog Timer (which is usually managed via Software using Q7-C26 dedicated API - Application Program Interface - libraries). This signal is managed by the on-

board STM32 Embedded Controller.

WDOUT: Watchdog event indicator Output. It is an active high signal, +3.3V_RUN voltage electrical level. When this signal goes high (active), it reports out to the

devices on the Carrier board that i

STM32 Embedded Controller.

BOOT_ALT#: Boot Alternate Input, active low, +3.3V_RUN voltage electrical level. When this signal is driven low, then i.MX8 processors starts to work in peripheral

mode, i.e. it begins to wait for inputs from an external Host connected to the system. This is used usually when it is necessary to program the module, directly

managed by ST Microelectronics STM32F100RC6T6 microcontroller

GP_TIMER_IN: General Purpose Timer Input. +3.3V_RUN voltage electrical level.

FAN_PWMOUT: PWM output for FAN speed management, +3.3V_RUN voltage signal.

SPKR: Speaker output, +3.3V_RUN voltage signal.

THRM#: Thermal Alarm Input. Active Low, +3.3V_RUN voltage signal electrical level

main module an overheating situation, so that the SoC can begin thermal throttling.

THRMTRIP#: Thermal Trip Output. Active Low, +3.3V_RUN voltage electrical level. Thermal Trip indicates an overheating condition of the processor. When goes

Q7-C26

Q7-C26 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0

-up resistor. This signal can be driven, using a pushbutton on the carrier

-up resistor. This signal can be driven, using a LID Switch on the carrier

-up resistor.

This signal is managed by the on-board

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