μ
Q7-962
μ
Q7-962 User Manual - Rev. First Edition: 1.0 - Last Edition: 3.1 - Author: S.B. - Reviewed by P.Z Copyright © 2016 SECO S.r.l.
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SMB_DAT: SM Bus control data line for System Management. Bidirectional signal, electrical level +3.3V_S with a 4k7
Ω
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 +3.3V_S with a 4k7
Ω
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 +3.3V_S with a 4k7
Ω
pull-up resistor. It is managed by i.MX6 processor
’
s
I2C3 controller.
Regarding the i.MX6 I2C buses, please refer to the following table.
Bus
Bus Number / device
MXM Pins
Address Locked (@7 bit)
SM Bus
I2C_1/I2C-0
60: SMB_CLK
62: SMB_DAT
0x40
HDMI_DDC
I2C_2/I2C-1
150: HDMI_CTRL_DAT
152: HDMI_CTRL_CLK
0x50 (if HDMI Driver is enabled)
0x08 PMIC
I2C
I2C_3/I2C-2
66: GP0_I2C_CLK
68: GP0_I2C_DAT
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
μ
Q7-962 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 47k
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.
THRM#: Thermal Alarm Input, +3.3V_S voltage active low signal. It can be driven, on the carrier board, to report to the i.MX6 processor some external hardware
’
s
overheating situation that need to be managed (for example, by activating the thermal throttling).
THRMTRIP#: Thermal Trip output, +3.3V_S voltage active low signal. This signal is used to report, to the carrier board, the processor
’
s overheating. This situation
must be managed on the carrier board by entering immediately into S5 State (Soft-Off).
GP_TIMER_IN: General Purpose Timer Input. +3.3V_S voltage signal with 4k7
Ω
pull-up resistor, directly managed by i.MX6 processor.
GP_PWM_OUT1: General Purpose PWM output, +3.3V_S voltage signal, directly managed by i.MX6 processor PWM1 Functional Output.
GP_PWM_OUT2 General Purpose PWM output, +3.3V_S voltage signal. It is connected to i.MX6 processor PWM2 functional output.
