Forlinx SBC OKMX8MPQ-C, User Manual

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TF card 1 Can support UHS-I TF card, up to 104MB/ s
4G/ 5G 1
Optional and alternative
4G: mini PCIe 4G wireless module, default driver: Quectel EC20 module;
5G: M.2 Key B 5G wireless module, default driver: Quectel RM500Q
SIM card: Micro SIM card slot
WiFi 1
AW-CM358M
；
IEEE 802.11 a/b/g/n/ac dual-band WIFI, rate up to 433.3Mbps;
BT
1 Bluetooth 5, rate up to 3Mbps
Audio 1
On-board WM8960 chip
Can support earphone output and MIC input, 1* 3.5mm jack;
Can support 2* 1W8
Ω
speaker output, by XH2.54 white header
IIC 3 For carrier board audio device, RTC, camera and other related devices mounting
PWM
2 for display backlight
RTC 4 4 on-board UART converted by USB, 2* 5-pin header with pitch of 2.0mm
UART 1 UART3: 3-wire, 3.3V, up to 4.0Mbps
ECSPI 1 2* 5-pin header with pitch of 2.0mm
CAN 2 Electrical isolation, can support CAN-FD, complies with CAN2.0B also
RS485
1 Electrical isolation, auto control transceiving direction
KEY 4 Power on/ off, reset keys, and extra 2 for users’ definition
LED 2 for users’ definition, red and green
DEBUG UART 2
3* 5-pin header with pitch of 2.0mm, integrated to USB Type-C for Cortex-A53 and M7
debug ports, default baud rate 115200
JTAG
1 2* 5-pin header with pitch of 1.27mm
3.4 OKMX8MPQ-C Carrier Board Introduction
Note: components with marks of ‘_DNP’ means the components are not soldered
3.4.1 Carrier Board Power
The 12V power adapter will supply power to development board by P9. VSYS_5V supplies power
to SoM, once SoM is powered, it outputs VDD_3V3 to control carrier board U2 and u3 to be
enabled.
VDD_3V3 makes the SoM powered firstly and then carrier board powered.
If users want to remove S2 power key in consideration of structure, please solder it with R10
resistor, so that the firmware could be powered automatically.
Note:
When users make carrier board designing, please refer to Forlinx carrier board power sequence that
SoM outputs VDD_3V3 to enable carrier board DC-DC power, so that SoM can be powered firstly
and then carrier board powered.