KED Products Based on NXP i.MX8M Plus
SoM Models
| Name | Product # | Description | Delivery Settings |
|---|---|---|---|
| OSM-S i.MX8M Plus 1GB/8GB -25...+85°C | 40099 290 | i.MX8MP SoM (1GB RAM, 8GB eMMC) | OEM: No Boot-Fuses, No Software |
| OSM-S i.MX8M Plus 2GB/16GB -25...+85°C | 40099 292 | i.MX8MP SoM (2GB RAM, 16GB eMMC) | OEM: No Boot-Fuses, No Software |
| OSM-S i.MX8M Plus 4GB/32GB -25..+85°C | 40099 293 | i.MX8MP SoM (4GB RAM, 32GB eMMC) | OEM: No Boot-Fuses, No Software |
Boards
| Name | Product # | SoM # | Description |
|---|---|---|---|
| BL i.MX8M Plus OSM-S 4GB/32GB -25..+85°C | 41099 265 | 41099 248 | Board with SoM (4GB RAM, 32GB eMMC) |
Fuse Configuration
Boot Config
| Index | Register Name | Offset | Value | Description |
|---|---|---|---|---|
| MX8MP-bcf-1 | OCOTP_BOOT_CFG0 OCOTP_BOOT_CFG2 OCOTP_BOOT_CFG3 |
0x470 0x490 0x4A0 |
0x10002a00 0x00000040 0x00000001 |
Boot from eMMC (SD1, 8bit buswidth, 3.3V, Fastboot, Ack), set BT_FUSE_SEL, No fallback |
Unqiue IDs
The KED Unique-IDs of the SoM and baseboard are stored in the OTP fuses.
| ID | Fuse Register | Format |
|---|---|---|
| KED SoM Unique ID | GP1 | Integer, Big-Endian |
| KED Board Unique ID | GP2 | Integer, Big-Endian |
Layout and Connectors
Digital IOs
Four digital inputs/outputs are available. The table below shows number and function of available DIOs and their associated GPIOs.
Each DIO has one GPIO that switches a MOSFET driver against the supply (24V) rail and another GPIO to read back the voltage level via a resistor divider.
The GPIOs are provided by a GPIO expander which is connected via I2C.
| DIO Name | Function | GPIO Label | GPIO Device | GPIO Offset | Connector |
|---|---|---|---|---|---|
| DIO1 | drive | DIO1_OUT |
gpiochip5 | 0 | X1501 - Pin 1 |
| DIO1 | read | DIO1_IN |
gpiochip5 | 1 | X1501 - Pin 1 |
| DIO2 | drive | DIO2_OUT |
gpiochip5 | 2 | X1501 - Pin 3 |
| DIO2 | read | DIO2_IN |
gpiochip5 | 3 | X1501 - Pin 3 |
| DIO3 | drive | DIO3_OUT |
gpiochip5 | 4 | X1501 - Pin 5 |
| DIO3 | read | DIO3_IN |
gpiochip5 | 5 | X1501 - Pin 5 |
| DIO4 | drive | DIO4_OUT |
gpiochip5 | 6 | X1501 - Pin 7 |
| DIO4 | read | DIO4_IN |
gpiochip5 | 7 | X1501 - Pin 7 |
Serial Devices
Below you will find an overview which serial device has which name in the OS and belongs to which UART device of the SoC.
| OSM Name | Type | Accessible via | Connector |
|---|---|---|---|
| UART_A | RS232 | /dev/ttymxc0 |
X1401 |
| UART_B | RS485 | /dev/ttymxc3 |
X1402 |
| UART_CON | UART/TTL (Debug UART) | /dev/ttymxc2 |
X20 (USB Mini-B) |
CAN-Bus Interface
The device has one CAN-Bus interface. The device is present after boot, but is not enabled by default.
| OSM Name | Accessible via | Connector |
|---|---|---|
| CAN_A | can0 |
X1402 |