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Mini Base Board For Compute Module 4 For The Raspberry Pi CM4 Or Being Integrated Into End Products with PoE function, which can be used with all versions of CM4.
Note: Raspberry Pi Compute Module 4 Not Included in the packege
1: This model only supports a 5V fan and cannot work with the 12V fan. Please confirm the fan voltage before connecting.
2: The DSI Display Port is connecting the DSI0 interface of the CM4, and doesn't use the DSI1 display interface.
3: The Type C interface can be used for the power supply or USB SLAVE interface for burning the image.
4: In order to ensure the normal power supply of CM4, please do not connect other devices when using the Type C interface to burn the image.
5: It needs to use a 5V 2A power supply for CM4. Otherwise, problems such as automatic shutdown, frequency reduction, etc. may occur.
6: When using the M.2 interface, please use the matching screws. Using screws of other lengths may cause the CM4 core to be damaged by the screws.
7: The module doesn't have any protection circuit, please do not short-circuit the power supply.
8: USB2.0 is closed by default, if you need to open it, you need to add dtoverlay=dwc2,dr_mode=host in config.txt.
9.HDMI1 uses a flat cable output, if you need to use it, you can purchase an HDMI adapter.
10. This expansion board does not support the POE function.
|1||CM4 connector||Suitable for all versions of Compute Module 4|
|2||DC power supply/programming interface||5V/2.5A power supply also can be used as an eMMC programming interface|
|3||DISP Interface||MIPI DSI Display interface|
|4||FAN Interface||For connecting cooling fan, allows speed adjustment and measurement, only support 5V fan.|
|5||CAM Interface||Dual MIPI CSI camera interface|
|6||HDMI0 Interface||HDMI Interface，Support 4K 30fps output|
|7||USB 2.0 Interface||2-channel USB 2.0 Interface, for connecting sorts of USB devices|
|8||Gigabit Ethernet||Gigabit Ethernet RJ45 connector, with 10 / 100 / 1000M network support|
|9||M.2 indicators||Indicating the operating status of the M.2 interface|
|10||ACT indicators||Raspberry Pi operating status indicator|
|11||PWR indicators||Raspberry Pi power indicator|
|12||BOOT selection||jumper shorted: CM4 would be booted from the USB-C interface
jumper opened: CM4 would be booted from eMMC or Micro SD card
|13||40PIN GPIO Interface||Conveniently connect various HAT modules|
|14||Micro SD Card interface||For connecting a Micro SD card with a pre-burnt image (Lite variant ONLY).|
|15||HDMI1 interface||HDMI1 Interface，Support 4K 30fps output|
|16||USB 2.0 interface||Can be connected through an adapter|
|17||FE1.1S||USB HUB chip, expanding one USB port to 4x ports|
|18||M.2 Interface||Supports sorts of NVME SSD, or communication modules with PCIE M.2 KEY-M interface|
|19||RTC||Allows RTC-related functions like wakeup, shutdown, reboot, and more|
|20||RTC interrupt pin switch||PI-RUN: CM4 reboot on RTC interruption
GN-EN: CM4 shutdown on RTC interruption
D4: D4 pin is triggered on RTC interruption
|21||EMC2301||Fan controller, for speed adjustment/measurement|
|22||RTC Battery connector||Can be connected to CR1220 button battery|
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