
MSC SM2S-IMX8M User Manual
32 / 92
Signal
Option
Availability
Pin Type
Signal Level
Pin on
i.MX8M
Pin name on
i.MX8M
Power
Toleranc
e
PU/PD
Description
USB3_EN_OC#
1
I/O OD
3.3V CMOS
n.a.
n.a.
3.3V
PU 10k 3.3V Multi-function signal for enabling
USB power and indicating an over-
current event.
USB4_EN_OC#
1
I/O OD
3.3V CMOS
n.a.
n.a.
3.3V
PU 10k 3.3V Multi-function signal for enabling
USB power and indicating an over-
current event.
NOTE:
Module pulls USB[0:4]_EN_OC# low to disable USB power delivery on carrier board. Carrier board pulls the signal low to indicate over-
current situation. If over-current monitoring is desired, an OD driver should be implemented. In case no USB power switches are used,
USB[0:4]_EN_OC# pins may be left unconnected.
USB1 overcurrent detection and power enable function are not available in Option 2.
USB1 power is always enabled in Option 2.
4.5 Camera
MIPI CSI-2 interface is supported on CSI0 with 2 lanes and on CSI1 with 4 lanes.
Table 4-5: HDMI Signal Description
Signal
Pin Type
Signal
Level
Pin on
i.MX8M
Pi name on
i.MX8M
Power
Tolerance
PU/PD
Description
CSI0_D[0]-
CSI0_D[0]+
I
1.8V CMOS
A23
B23
MIPI_CSI1_D0_N
MIPI_CSI1_D0_P
1.8V
CSI differential data inputs
CSI0_D[1]-
CSI0_D[1]+
I
1.8V CMOS
C22
D22
MIPI_CSI1_D1_N
MIPI_CSI1_D1_P
1.8V
CSI differential data inputs
CSI1_D[0]-
CSI1_D[0]+
I
1.8V CMOS
C20
D20
MIPI_CSI2_D0_N
MIPI_CSI2_D0_P
1.8V
CSI differential data inputs
CSI1_D[1]-
CSI1_D[1]+
I
1.8V CMOS
A20
B20
MIPI_CSI2_D1_N
MIPI_CSI2_D1_P
1.8V
CSI differential data inputs