Seco Q7-A75-J User Manual page 31

3.2.1.12 Miscellaneous signals
Here following, a list of signals that complete the standard features of μQ7-A75-J module.
SMB_CLK: SM Bus control clock line for System Management. Bidirectional signal, electrical level +3P3V_S with a 4k7Ω pull-up resistor. It is managed by i.MX6
processor's I2C1 controller.
SMB_DAT: SM Bus control data line for System Management. Bidirectional signal, electrical level +3P3V_S with a 4k7Ω pull-up resistor. It is managed by i.MX6
processor's I2C1 controller.
GP0_I2C_CLK: general purpose I2C Bus clock line. Bidirectional signal, electrical level +3P3V_S with a 4k7Ω pull-up resistor. It is managed by i.MX6 processor's
I2C3 controller.
GP0_I2C_DAT: general purpose I2C Bus data line. Bidirectional signal, electrical level +3P3V_S with a 4k7Ω pull-up resistor. It is managed by i.MX6 processor's
I2C3 controller.
WDTRIG#: Watchdog Trigger Input. It is an active low signal, +3P3V_S voltage, with 10kΩ pull-up resistor. This signal can be used to reset and restart, via
Hardware, the internal Watchdog Timer (which is usually managed via Software using μQ7-A75-J dedicated API - Application Program Interface - libraries).
WDOUT: Watchdog event indicator Output. It is an active high signal, +3.3V_S voltage. When this signal goes high (active), it reports out to the devices on the
Carrier board that internal Watchdog's timer expired without being triggered, neither via HW nor via SW.
BOOT_ALT#: Boot Alternate Input, active low +3P3V_S voltage signal with 10kΩ pull-up resistor. When this signal is driven low, then i.MX6 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.
All of the above mentioned signals (except for BOOT_ALT#) can also be used for different functionalities; please refer to the pin muxing table for more details.
3.2.1.13 Manufacturing signals
According to Qseven ® Standard specifications, rel. 2.0, on pins designed as MFG_NC1 and MFG_NC2 are carried the NXP i.MX6 Internal UART #2 signals TX
and RX, which can be used for debug purposes
μQ7-A75-J
μQ7-A75-J User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by P.Z. - Copyright © 2016 SECO S.r.l. 31