Embedian, Inc.
128
SMARC-iMX8MM Computer on Module User’s Manual
v. 1.2
SMARC
Edge
Finger
NXP
i.MX8M
Mini
CPU
Type
Description
Pin#
Pin
Name
Ball
Mode
Signal
Name
P127
RESET_IN#
I
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.
P128
POWER_BTN#
I
Power
‐
button
input
from
carrier
board.
Carrier
to
float
the
line
in
in
‐
active
state.
Active
low,
level
sensitive.
It
is
de
‐
bounced
on
the
Module
Pulled
up
on
Module.
Driven
by
OD
part
on
Carrier.
P129
SER0_TX
AC19
ALT4
SAI2_RXFS__
UART1_DCE_TX
O
Asynchronous
serial
port
data
out
P130
SER0_RX
AB22
ALT4
SAI2_RXC__
UART1_DCE_RX
I
Asynchronous
serial
port
data
in
P131
SER0_RTS#
E18
ALT1
UART3_RXD__
UART1_DCE_
CTS_B
O
Request
to
Send
handshake
line
for
SER0
P132
SER0_CTS#
D18
ALT1
UART3_TXD__
UART1_DCE_
RTS_B
I
Clear
to
Send
handshake
line
for
SER0
P133
GND
P
Ground
P134
SER1_TX
F18
ALT0
UART4_TXD__
UART4_DCE_TX
O
Asynchronous
serial
port
data
out
P135
SER1_RX
F19
ALT0
UART4_RXD__
UART4_DCE_RX
I
Asynchronous
serial
port
data
in
