Compute Module 4 PoE Board (B)

Suitable For Evaluating The Raspberry Pi CM4 Or Being Integrated Into End Products

PoE Base Board for all Compute Module 4 Variants

Specifications:

• CM4 SOCKET: suitable for all variants of Compute Module 4
• NETWORKING: Gigabit Ethernet RJ45 connector, integrates 802.3af-compliant PoE circuit (5V/2.5A)
• CONNECTOR: Raspberry Pi 40PIN GPIO header, non-isolated RS485, non-isolated RS232, PCIe Gen 2 × 1
• USB: USB 2.0 Type A × 4
• DISPLAY: MIPI DSI display port × 2 (15pin 1.0mm FPC connector)
• CAMERA: MIPI CSI-2 camera port × 2 (15pin 1.0mm FPC connector)
• VIDEO: HDMI port × 2, supports 4K 30fps output
• RTC: Real-time clock with battery socket and ability to wake Compute Module 4
• STORAGE: MicroSD card socket for Compute Module 4 Lite (without eMMC) variants
• FAN HEADER: allows speed adjustment and measurement, 5V / 12V
• POWER INPUT: 5V
• DIMENSIONS: 124.5 × 108.8mm

Connecting With Compute Module 4

• Standard CM4 Socket And Color-Coded Raspberry Pi 40PIN GPIO Header
• Suitable For All Variants Of Compute Module 4

Rich Peripheral Connectors

Onboard Connectors Including CSI/DSI/HDMI/USB/ETH/PCIe/RS232/RS485

What's On Board

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 ports

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 lightningproof, 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

Application Example:

Suitable For PoE Powered Raspberry Pi Projects, Or Other Industrial Context

for reference only, CM4, display, and cameras are NOT included.

Documentations:

• Wiki

Package Includes:

• 1 x Compute Module 4 PoE Board (B)