Q7-928
Q7-928 User Manual - Rev. First Edition: 1.0 - Last Edition: 3.0 - Author: S.B. - Reviewed by P.Z Copyright © 2016 SECO S.r.l.
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a pulse to GND of this signal will reset the Qseven
®
module.
BATLOW#: Battery Low Input, active low +3.3V_A electrical voltage signal, with 10k
Ω
pull-up resistor. This signal can be driven on the carrier board to signal that
the system battery is low, or that some battery-related event has occurred. Can be left unconnected if not used
WAKE#: Wake Input, active low +3.3V_A electrical voltage signal with 10k
Ω
pull-up resistor and series Schottky diode. This signal can be driven low, on the carrier
board, to report that a Wake-up event has occurred, and consequently the module must turn itself on. It can be left unconnected if not used.
SUS_STAT#: Suspend status output, active low +3.3V_A electrical voltage signal, with 10k
Ω
pull-up resistor. This output can be used to report to the devices on
the carrier board that the module is going to enter in one of possible ACPI low-power states.
SUS_S3#: S3 status output, active low +3.3V_A electrical voltage signal, with 10k
Ω
pull-down resistor. This signal must be used, on the carrier board, to shut off
the power supply to all the devices that must become inactive during S3 (Suspend to RAM) power state.
SUS_S5#: S5 status output, active low +3.3V_A electrical voltage signal, with 10k
Ω
pull-down resistor. 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.
SLP_BTN#: Sleep button Input, active low +3.3V_A electrical level signal, with 10k
Ω
pull-up resistor. This signal can be driven, using a pushbutton on the carrier
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.
LID_BTN#: LID button Input, active low +3.3V_A electrical level signal, with 10k
Ω
pull-up resistor. This signal can be driven, using a LID Switch on the carrier
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.
3.2.3.14
Miscellaneous signals
Here following, a list of signals that complete the features of Q7-928 module.
WDTRIG#: Watchdog Trigger Input. It is an active low signal, +3.3V_S voltage, with 10k
Ω
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 Q7-928 dedicated API - Application Program Interface - libraries).
WDOUT: Watchdog event indicator Output. It is an active high signal, +3.3V_S voltage, with 10k
Ω
pull-down resistor. 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 +3.3V_S voltage signal with 2k2
Ω
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.
GPIO_6: This signal is carried on the pin usually dedicated to LVDS DisplayID DDC Data line. On the Q7-928 module, instead, it can be used as a Generic
Purpose I/O, electrical level +3.3V_S with a 4k7
Ω
pull-up resistor. It is connected to i.MX6 processor
’
s GPIO_6 pad.
GPIO_19: This signal is carried on the pin usually dedicated to LVDS DisplayID DDC Clock line. On the Q7-928 module, instead, it can be used as a Generic
Purpose I/O, electrical level +3.3V_S. It is connected to i.MX6 processor
’
s GPIO_19 pad.
GP_TIMER_IN: General Purpose Timer Input. +3.3V_S voltage signal, directly managed by Lattice LCMXO640 CPLD.
