Template: CM4-DUAL-ETH-BASE Spec

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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
CM4-DUAL-ETH-BASE-details-size.jpg
Compute_Module 4
Compute Module 4 IO Board 5.png

What's on Board

CM4-DUAL-ETH-BASE-details-intro.jpg

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