ADLINK Technology SMARC NXP LEC-IMX8M, User Manual

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ADLINK Technology Inc. LEC-iMX8M User’s Guide
Page 44 copyright © 2021 ADLINK Technology Inc.
4.4.5 Power and System Management
Name Pin
# Description I/O
Type I/O
Level Power
Domain PU / PD Comments
BATLOW# S156 Battery low indication to Module. Carrier to float
the line in inactive state.
I OD
CMOS 1.8V Runtime PU 10K
Driven by OD on Carrier.
Pulled up on module.
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.
O
CMOS 1.8Vsb / 1.8V - 1.8Vsb is only used for signaling, not a
power source to the module
CARRIER_STBY# S153 The Module shall drive this signal low when the
system is in a standby power state.
O
CMOS 1.8Vsb / 1.8V -
CHARGER_PRSNT# S152 Held low by Carrier if DC input for battery charger
is present.
I OD
CMOS 1.8V Runtime PU 4.7K
Driven by OD on Carrier.
Pulled up on module.
CHARGING# S151 Held low by Carrier during battery charging.
Carrier to float the line when charge is complete.
I OD
CMOS 1.8V Runtime PU 4.7K
Driven by OD on Carrier.
Pulled up on module.
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.
I OD
CMOS 1.8V Runtime PU 2.2K
Driven by OD on Carrier
Module must implement PU but actual
value is depended on particular module
design.
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.
I OD
CMOS 1.8V Runtime PU 4.7K
Driven by OD on Carrier.
Pulled up on 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.
I OD
CMOS 1.8V Runtime PU 4.7K
Driven by OD on Carrier.
Pulled up on 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.
I OD
CMOS 1.8V Runtime PU 4.7K
Driven by OD on Carrier.
Pulled up on module.
RESET_OUT# P126 General purpose reset output to Carrier board. O
CMOS 1.8V Runtime