Dual Gigabit Ethernet Base Board for Raspberry Pi Compute Module 4

This Dual Gigabit Ethernet Base Board for the Raspberry Pi Compute Module 4 (CM4) is a great foundation for building a CM4 project or prototyping your own designs with the aid of the board’s long list of features!

Suitable for curious CM4 home tinkerers, custom retro console builders, industrial specialists and more, this base board provides a rich set of features broken out of the Compute Module 4.

The CM4 connects to the board to offers the following features and connectivity options:

• USB-C slave port for programming
• 40-pin standard Raspberry Pi GPIO header
• 2x RJ45 Gigabit Ethernet ports
• 3x USB 3.2 Gen1 ports
• 2x Full-size HDMI ports (supports 4K 30fps output)
• Real-time Clock (RTC) (battery not included)
• 2x MIPI CSI Camera ports for Raspberry Pi Camera Modules
• Wide range 7-36V power supply via DC Jack (power supply sold separately)
• Dual LEDs for power and indication
• MicroSD card slot
• 4-pin fan header with speed adjustment

Specifications

What’s Onboard?

1) CM4 socket
– Suitable for all variants of Compute Module 4
2) 40-pin GPIO header
– For connecting sorts of HATs
3) RJ45 Gigabit Ethernet
– Dual RJ45 Gigabit Ethernet, 10/100/1000M compatible
– ETHERNET 0: CM4 original ETH
– ETHERNET 1: USB extended ETH
4) USB 3.2 ports
– 3x USB 3.2 Gen1, for connecting sorts of USB devices
5) HDMI connectors
– 2x HDMI, supports 4K 30fps output
6) Camera
– 2x MIPI CSI camera ports
7) DC power supply (2.1mm)
– 7~36V DC wide voltage range power input
8) Dual LED indicators
– Red: Raspberry Pi power indicator
– Green: Raspberry Pi operating status indicator
9) Micro SD card slot
– For connecting a Micro SD card with pre-burnt image (Lite variant ONLY)
10) Fan header
– For connecting cooling fan, allows speed adjustment and measurement
11) DISP0
– MIPI DSI display port
12) USB-C Slave port
– For burning system image into Compute Module 4 eMMC variants
13) RTC battery holder
– Supports CR1220 button cell
14) RTC interruption configuration
– PI-RUN: CM4 will reboot on RTC interruption
– GN-EN: CM4 powerdown on RTC interruption
– D4: D4 pin is triggered on RTC interruption
15) IO-VREF selection
– Set the CM4 IO logic level as 3.3V or 1.8V
16) Fan power supply selection
– Select 5V or 12V power to drive the fan
17) System function configuration
– BT_DIS: Bluetooth disabled, for CM4 with antenna variant ONLY
– WiFi_DIS: WiFi disabled, for CM4 with antenna variant ONLY
– WP_DIS: boot mode switch, ONLY be used when NOT booted from eMMC or SD card
18) RTC/FAN I2C bus selection
– SDA0/SCL0: I2C-10 is shared with CSI/DSI
– GPIO3/2: I2C-1 is shared with 40PIN header
19) RTL8153
– USB Gigabit Ethernet chip
20) EMC2301
– Fan controller, allows fan speed adjustment and measurement
21) VL805
– USB 3.0 HUB

Package Contents

• 1x CM4 Dual Ethernet Base Board

Compute Module 4 and CR1220 battery not included

Resources

• Product Wiki