Template: CM4-DUAL-ETH-BASE Spec
Overview
CM4-DUAL-ETH-BASE is a base board that can be used with Raspberry Pi Compute Module 4, and supports 7~12V DC power supply, onboard three USB3.2, dual Gigabit Ethernet ports and it is suitable for scenarios that require multiple network ports, such as soft routing.
Precautions for use
1: Do not plug and unplug any device except USB and HDMI when powered on.
2: Confirm the fan voltage before connecting, support 5V and 12V, connect 12V by default, please modify the resistance of FAN_VCC when switching.
3: The Type C interface is only used as the USB SLAVE interface to program the image, and cannot be used as a power supply.
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: When CM4 is in normal use, it needs to provide at least 12V 1.5A power supply. Otherwise, there may be problems such as automatic shutdown, frequency reduction and so on.
6: For Opwenwrt, see the instructions for use.
7: This expansion board does not support POE function.
Version
Version: CM4-DUAL-ETH-BASE V3 (20220527)
- 1: Add common mode inductance to improve EMI. (CE certified)
Version: CM4-DUAL-ETH-BASE V2 (20220518)
- 1: DSI interface changed from DSI0 to DSI1
- 2: Correct the mismatch between screen printing and network in RTC SYSTEM and other parts
Version: CM4-DUAL-ETH-BASE V1
- Initial version
Dimension
CM4-DUAL-ETH-BASE
Compute_Module 4
What's on Board
No. | Component | Description | |
1 | CM4 socket | Suitable for all variants of Compute Module 4 | |
2 | 40PIN GPIO | Connect HAT module | |
3 | Gigabit Ethernet connector | Dual RJ45 Gigabit Ethernet ports, support 10/100/1000M network access ETHERNET 0: CM4 native network port ETHERNET 1: USB extended network port | |
4 | USB 3.2 | 3-way USB 3.2 Gen1 interface, support various USB device insertion | |
5 | HDMI | Dual HDMI ports, support dual 4K 30fps output | |
6 | CAM | Dual MIPI CSI camera interface | |
7 | DC Power | 7~36V DC wide voltage power supply | |
8 | Dual LED | Red light: Raspberry Pi power indicator Green light: Raspberry Pi working status indicator | |
9 | Micro SD | Used to connect the Micro SD card with the system to start Compute Module 4 Lite | |
10 | FAN | Convenient access to cooling fans, support speed regulation and speed measurement | |
11 | DISP | MIPI DSI Display interface - DISP1 | |
12 | USB SLAVE | Compute Module 4 eMMC Version can burn the system image through this interface | |
13 | RTC Battery connector | Can be connected to CR1220 button battery | |
14 | RTC Interrupt pin switching | PI-RUN: RTC trigger interrupt CM4 restart GN-EN: RTC trigger interrupt CM4 power off D4: RTC trigger interrupt D4 pin | |
15 | IO-VREF selection | CM4 IO logic voltage switch 3.3V or 1.8V | |
16 | FAN power supply options | can choose 5V or 12V voltage to drive the fan | |
17 | System function switch | BT_DIS: Bluetooth disabled, only for CM4 version with antenna WiFi_DIS: WiFi disabled, only for CM4 version with antenna WP_DIS: Start mode switch, only For use without EMMC boot or SD boot | |
18 | RTC/FAN I2C bus selection | SDA0/SCL0: I2C-10 and CSI/DSI shared GPIO3/2: I2C-1 and 40PIN shared | |
19 | RTL8153 | USB Gigabit LAN Chip | |
20 | EMC2301 | Fan controller, control fan speed, measure fan speed | |
21 | VL805 | USB 3.0 HUB |