Embedian, Inc.
63
SMARC-iMX8MM Computer on Module User’s Manual
v. 1.2
2.1.12.1.
SPI0
Signals
SMARC
‐
iMX8MM
does
not
support
SPI0
device
boot
up.
The
Carrier
SPI0
device
cannot
be
selected
as
the
Boot
Device
–
see
Section
4.3
Boot
Select.
Edge
Golden
Finder
Signal
Name
Direction
Type
Tolerance
Description
SPI0_CS0#
Output
CMOS
1.8V
SPI0
Master
Chip
Select
0
output
SPI0_CS1#
Output
CMOS
1.8V
SPI0
Master
Chip
Select
1
output
SPI0_CK
Output
CMOS
1.8V
SPI0
Master
Clock
output
SPI0_DIN
Input
CMOS
1.8V
SPI0
Master
Data
input
(input
to
CPU,
output
from
SPI
device)
SPI0_DO
Output
CMOS
1.8V
SPI0
Master
Data
output
(output
from
CPU,
input
to
SPI
device)
