Embedian, Inc.
64
SMARC-iMX8MM Computer on Module User’s Manual
v. 1.2
2.1.12.2.
ESPI
Signals
SMARC
‐
iMX8MM
does
not
support
ESPI
device
boot
up
either.
The
Carrier
ESPI
device
cannot
be
selected
as
the
Boot
Device
–
see
Section
4.3
Boot
Select.
Edge
Golden
Finder
Signal
Name
Direction
Type
Tolerance
Description
ESPI_CS0#
Output
CMOS
1.8V
ESPI
Master
Chip
Select
0
output
ESPI_CS1#
Output
CMOS
1.8V
ESPI
Master
Chip
Select
1
output
ESPI_CK
Output
CMOS
1.8V
ESPI
Master
Clock
output
ESPI_IO_[0:1]
Bi
‐
Dir
CMOS
1.8V
ESPI
Master
Data
input/output
ESPI_RESET#
Output
CMOS
1.8V
Not
Supported
ESPI_ALERT[0:1]#
Input
CMOC
1.8V
Not
Supported