Power And System Management - ADLINK Technology SMARC NXP iMX 8M Series User Manual

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LEC-iMX8M plus User's Guide 1.0

4.4.5 Power and System Management

Name
Pin
Description
#
BATLOW#
S156
Battery low indication to Module. Carrier to float
the line in inactive state.
CARRIER_PWR_ON
S154
Carrier board circuits (apart from power
management and power path circuits) should not
be powered up until the Module asserts the
CARRIER_PWR_ON signal.
CARRIER_STBY#
S153
The Module shall drive this signal low when the
system is in a standby power state.
CHARGER_PRSNT#
S152
Held low by Carrier if DC input for battery charger
is present.
CHARGING#
S151
Held low by Carrier during battery charging.
Carrier to float the line when charge is complete.
VIN_PWR_BAD#
S150
Power bad indication from Carrier board. Module
and Carrier power supplies (other than Module
and Carrier power supervisory circuits) shall not be
enabled while this signal is held low by the Carrier.
SLEEP#
S149
Sleep indicator from Carrier board. May be
sourced from user Sleep button or Carrier logic.
Carrier to float the line in in-active state.Active low,
level sensitive. Should be de-bounced on the
Module.
LID#
S148
Lid open/close indication to Module. Low indicates
lid closure (which system may use to initiate a
sleep state). Carrier to float the line in in-active
state. Active low, level sensitive. Should be de-
bounced on the Module.
POWER_BTN#
P128
Power-button input from Carrier board. Carrier to
float the line in in-active state. Active low, level
sensitive. Should be debounced on the Module.
Page 43
I/O
I/O
Type
Level
I OD
1.8V
CMOS
O
1.8Vsb / 1.8V
CMOS
O
1.8Vsb / 1.8V
CMOS
I OD
1.8V
CMOS
I OD
1.8V
CMOS
I OD
1.8V
CMOS
I OD
1.8V
CMOS
I OD
1.8V
CMOS
I OD
1.8V
CMOS
copyright © 2021 ADLINK Technology Inc.
Power
PU / PD
Comments
Domain
Runtime
PU 10K
Driven by OD on Carrier.
Pulled up on module.
-
1.8Vsb is only used for signaling, not a
power source to the module
-
Runtime
PU 4.7K
Driven by OD on Carrier.
Pulled up on module.
Runtime
PU 4.7K
Driven by OD on Carrier.
Pulled up on module.
Runtime
PU 2.2K
Driven by OD on Carrier
Module must implement PU but actual
value is depended on particular module
design.
Runtime
PU 4.7K
Driven by OD on Carrier.
Pulled up on module.
Runtime
PU 4.7K
Driven by OD on Carrier.
Pulled up on module.
Runtime
PU 4.7K
Driven by OD on Carrier.
Pulled up on module.
SGET SMARC Rev 2.1

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