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MSC SM2S-IMX8M User Manual
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4.14 Watchdog
Table 4-14: Watchdog Signal Description
Signal
Pin Type
Signal
Level
Pin on
i.MX8M
Pin name
on i.MX8M
Power
Tolerance
PU/PD
Description
WDT_TIME_OUT#
O PP
1.8V CMOS
R4
GPIO1_IO02
1.8V
Watch-Dog-Timer Output from the SOC.
4.15 System Management
Table 4-15: System Management Signal Description
Signal
Pin
Type
Signal
Level
Pin on
i.MX8M
Pin name on
i.MX8M
Power
Tolerance
PU/PD
Description
VIN_PWR_BAD#
I OD
1.8V
n.a.
n.a.
5.0V
PU 18K Vin
PD 10K
Pulled low at carrier until external power supply
is ready. Pulled-up at module by voltage
divider.
CARRIER_PWR_ ON
O PP
1.8V CMOS
n.a.
n.a.
1.8V
Carrier board circuits should not be powered up
until module asserts this signal.
CARRIER_STBY#
O PP
1.8V CMOS
n.a.
n.a.
1.8V
Module asserts this signal to indicate standby
power state.
RESET_OUT#
O PP
1.8V CMOS
K4
SAI5_MCLK
1.8V
PD 10k
General purpose reset for carrier board.
(CPU GPIO3_IO25)
RESET_IN#
I OD
1.8V CMOS
n.a.
n.a.
1.8V
PU 10k Vin
Reset input from Carrier board. Carrier drives
low to force a Module reset, floats the line
otherwise. Pulled up on module. Driven by OD
part on carrier.
POWER_BTN#
I
1V8 CMOS
n.a.
n.a.
1.8V
PU 10k 1V8
Power button to bring system into a power
state. Pulled up on module. Driven by OD part
on carrier.
Do not connect any Pull-down or Pull-up
resistors on Carrier.