Seco Q7-C25 User Manual page 35

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3.2.12

SPI interface signals

The signals related to SPI are as follows:

SPI_CS0#: SPI primary Chip select, active low output signal. Electrical level +3.3V_RUN

SPI_CS1#: SPI secondary Chip select, active low output signal. Electrical level +3.3V_RUN. This signal must be used only in case there are two SPI devices on the

carrier board, and the first chip select signal (SPI_CS0#) has already been used. It must not be used in case there is only one SPI device

SPI_SCK

SPI_MISO: SPI0 Master Data Input, electrical level +3.3V_RUN. Input to i.MX 8M from SPI devices embedded on the Carrier Board

SPI_MOSI: SPI0 Master Data Output, electrical level +3.3V_RUN. Output from i.MX 8M to SPI devices embedded on the Carrier Board

SPI interface can support speed up to 20MHz. Note that this interface is not available in all factory configurations. Please be sure of factory configuration for the

module ordered.

3.2.13

GPIO interface signals

The GPIO general-purpose input/output peripheral provides dedicated general-purpose pins that can be configured as either inputs or outputs.

This module provides up to 8xGPIO.

The signals related to GPIO are as follows:

GPIO[0:7]: General Purpose Input/Output, electrical level +3.3V_RUN.

3.2.14

CAN interface signals

The NXP i.MX 8M processor provide a Controller Area Network (CAN) interface through a Microchip MCP2518FD External CAN FD Controller with SPI interface.

The signals related to CAN are as follows:

CAN0_TX: CAN transmitting signal, electrical level +3.3V_RUN

CAN0_RX: CAN receiving signal, electrical level +3.3V_RUN

Please consider that it is not possible to connect Qseven

board.

3.2.15

Power Management signals

According to Qseven

specifications, on the golden edge finger connector there is a set of signals that are used to manage the power rails and power states.

The signals involved are:

PWGIN: Power Good Input, +5V_RUN tolerant active high signal. It must be driven on the carrier board to signal that power supply section is ready and stable. When

this signal is asserted, the module will begin the boot phase. The signal must be kept asserted for all the time that the module is working.

PWRBTN#: Power Button Input, active low, +3.3V_ALW. When working in ATX mode, this signal can be connected to a momentary push-button: a pulse to GND of

this signal will switch power supply On or Off.

Q7-C25

3.3V_RUN

CAN interface to any CAN Bus directly, it is necessary to integrate a CAN Bus Transceiver in the Carrier

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