Template: CM4-DISP-BASE-7A-BOX Spec

Overview

I am Raspberry Pi CM4 kit 7-inch touch screen all-in-one kit, CM4-DISP-BASE-7A-BOX is a baseboard that can be used with Raspberry Pi Compute Module 4, and supports POE power supply and 7~36V DC power supply, Onboard four-way USB2.0, 7-inch touch screen, etc., the all-in-one kit is convenient for users to use.

Precautions for use

1: Do not plug and unplug any device except USB and HDMI when powered on
2: If the fan needs to be replaced, please confirm the fan voltage and then power on.
3: The USB SLAVE interface burns the image and cannot be used as the OTG interface.
4: In normal use, it is necessary to provide at least 12V 1A power supply for CM4. Otherwise, there may be problems such as automatic shutdown, frequency reduction and so on.
5: Onboard default 4-way USB 2.0 interface.
6: POE function is not supported.
8: The screen needs to add a driver to work.

Dimension

CM4-DISP-BASE-7A-BOX

What's on board

Label	Name	Description
1	CM4 Connector	Applies to all versions of Compute Module 4
2	DC power supply interface	7~36V DC wide voltage power supply, it is recommended to use a 24W or higher power supply
3	CM4 Status Indicator	PWR: Raspberry Pi Power Indicator ACT: Raspberry Pi Working Status Indicator
4	HDMI port	Support 4K 30fps output
5	RJ45 Gigabit Ethernet port	Support 10 / 100 / 1000M network access
6	USB2.0 interface	4-way 2.0 interface, support various USB device insertion
7	Micro SD card interface	For inserting a Micro SD card with the system to start the Compute Module 4 Lite
8	USB SLAVE port	USB burner port
9	BOOT switch button	ON: Compute Module 4 boots to USB Type-C port OFF: Compute Module 4 boots to eMMC or Micro SD card
10	MIPI CSI interface	A 5-megapixel camera has been connected
11	Isolated I2C	Device can be controlled or read via I2C
12	Isolated GPIO	The device can be controlled or detected through GPIO
13	Isolated RS485	can communicate through the RS485 interface
14	Isolated RS232	can communicate through the RS232 interface
15	DC power supply	7 ~ 36V DC power supply interface
16	RS485 termination resistor and GPIO logic level selection	RS485: 120R connection and disconnection GPIO: GPIO logic level selection
17	RTC Battery Connector	Can be connected to CR1220 button battery
18	Touch screen interface	Connected capacitive touch screen
19	Monitor connection interface	A 7-inch 800×480 pixel screen is connected
20	M.2 M KEY	An NVME SSD that supports M.2 M KEY, or a communication module for other PCIe channels
21	Speaker interface	Connect a speaker to output sound
22	FAN	Easy access to cooling fans, support for speed regulation and speed measurement
23	RTC Interrupt Pin Switch	GL-EN: RTC Trigger Interrupt CM4 Power Off PI-RUN: RTC Trigger Interrupt CM4 Restart D16: RTC Trigger Interrupt D16 pin (default)
24	System function switch	BT_DIS: Bluetooth disabled, only available for CM4 version with antenna WIFi_DIS: WIFI disabled, only available for CM4 version with antenna WP_DIS: Boot mode switch, not using EMMC or SD use at startup
25	FAN Power Supply Selection	You can choose 5V (default) or 12V to drive the fan
26	IO-VREF selection	CM4 IO logic voltage switching 3.3V (default) or 1.8V
27	RS485 toggle	GPIO13/12: use ttyAMA1 device (default) GPIO15/14: use ttyS0 device
28	I2C bus selection of RTC/FAN	SDA0/SCL0: I2C-10 and CSI/DSI share GPIO3/2: I2C-1 and 40PIN share (default)