Template: Compute Module 4 PoE Board B Spec
From Waveshare Wiki
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, convenient for users to use.
Dimension
Compute_Module 4 POE Board (B)
700px
Compute_Module 4
What's on board
No. | Component | Description |
1 | CM4 socket | Suitable for all variants of Compute Module 4 |
2 | 40PIN GPIO header | ~ |
3 | BOOT selection | ON: CM4 would be booted from USB-C interface OFF: CM4 would be booted from eMMC or Micro SD card |
4 | Misc functional pins | ~ |
5 | USB Type-C power supply / programming | 5V/2.5A power supply, also allows burning system image into Compute Module 4 eMMC variants |
6 | Status indicators | ACT: Raspberry Pi operating status indicator PWR: Raspberry Pi power indicator |
7 | DISP | 2x MIPI DSI display port |
8 | CAM | 2x MIPI CSI camera connectors. |
9 | USB2.0 ports | 4x USB2.0 ports, for connecting sorts of USB devices |
10 | HDMI ports | 2x HDMI ports, supports dual 4K 30fps output |
11 | RTC battery holder | supports CR1220 button cell |
12 | FAN header | for connecting cooling fan, allows speed adjustment and measurement |
13 | PCIe Gen 2 × 1 socket | forconnecting PCIe Gen 2 × 1 modules |
14 | Gigabit Ethernet connector | Gigabit Ethernet RJ45 with PoE support, 10/100/1000M compatible |
15 | DC 5V output | ~ |
16 | RS485 | with 600W lightning-proof, anti-surge, and 15KV ESD protection, reversed optional 120R balancing resistor jumper |
17 | RS232 | with TVS diode, anti-surge, and ESD protection |
18 | Buzzer | ~ |
19 | FAN_VDD/PoE selection | cooling fan driving voltage: 12V or 5V PoE: enable (EN) or disable (DIS) |
20 | FE1.1S | USB expansion chip |
21 | PCF52063ATL | RTC chip |
22 | RTC/FAN | I2C bus switch, SDA0/SCL0: I2C-10 is shared with CSI/DSI GPIO3/2: I2C-1 is shared with 40PIN header |
23 | IO logic level selection | set the CM4 IO logic level as 3.3V or 1.8V |
24 | 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 |
25 | Micro SD card slot | insert a Micro SD card with pre-burnt system, to start up Compute Module 4 Lite |