Forlinx SBC OKMX8MPQ-C, User Manual

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2.6 SoM FETMX8MM-C Pin Spec.
2.6.1 Power Pins
Pin Signal I/ O Default function Pin NO.
Power
VSYS_5V Power input Som power supplying pin, 5V
RD_73
RD_75
RD_77
RD_79
RD_76
RD_78
RD_80
VSD_3V3 Power output
Carrier board SD card power supply,
3.3V
RD_66
RD_68
VSD_3V3 Power output
SoM powered done, used for carrier
board powering sequence control, can
not be used for carrier board power
supply
RD_74
NVCC_SNVS_1V8 Power input
SoM SNVS voltage, if no special
requirement, please suspend it
RD_63
GND
SoM power ground, all GND pins
should be circuited
-
2.6.2 Reset Control Pin
Pin Signal I/ O Default function Pin NO.
SoM reset SYS_nRST I SoM power off and reset, low voltage valid RU_77
CPU reset POR_B I CPU reset pin RU_69
2.6.3 Boot Pin
Pin Signal I/ O Default function Pin NO.
Booting mode
selection
BOOT_MODE0 I
BOOT device select
RU_51
BOOT_MODE1 I RU_49
BOOT_MODE2 I RU_47
BOOT_MODE3 I RU_53
2.6.4 Function Control Pin
Pin Signal I/ O Default function Pin NO.
Functional control
ONOFF I SoM power pin, could be suspended if not needed RU_73
VDD_3V3 O
SoM output to control carrier board power
sequence
RD_74
PMIC_ON_REQ O
SoM PMIC power request signal, no special
requirement, please suspend it
RU_71