CS-CM4-BOX

Version 1.0

Product Overview

The Cortex®-A72 Raspberry Pi® series CS-CM4-BOX (PN: CSRA4BOX) is a high-quality fanless industrial Pi PC.

From the ground-up, the CPU is built for low power consumption, around 5.4W (max). As such, it is best suited for mobile and power-constrained industrial or field applications. A specially designed aluminum alloy housing with fins for increased heat dissipation serves as a passive cooler, eliminating the need for built-in fans. The fanless design reduces noise, as well as the maintenance costs and efforts, leading to increased reliability at the same time.

The CS-CM4-BOX industrial Pi PC is based around the powerful Raspberry Pi® Compute Module 4, powered by the Quad Cortex®-A72 processor with a processor speed of 1.5GHz.

Ordering Options

Chipsee products can be customized during the ordering process. The product will be shipped with the pre-installed factory defaults if no extra requirements are specified. The table in the Specifications section provides information about the default options bundled with the product.

Note

You can order CSRA4BOX from the official Chipsee Store or from your nearest distributor.

Pi® CM4 Module

The Pi® Compute Module 4 appears in different versions depending on the size of the DDR4 and eMMC.
The CS-CM4-BOX industrial Pi PC does not include the CM4 Raspberry Pi® module by default. If you would like to purchase it with a CM4, you can select it at the Chipsee store during the ordering process.

Operating System

This product comes with a pre-installed Raspberry Pi OS. Chipsee software engineers have created all the drivers, so every hardware feature is readily available for any standard development tool.

If your project requires a different OS, please Contact us, and we’ll make a customized version that suits your needs.

Optional Features

The CS-CM4-BOX industrial Pi PC does not include the 3G/4G/LTE modules by default. These modules are optional and can be selected at the Chipsee store during the ordering process.

Warning

Installation, repair, and maintenance tasks should be performed by trained personnel only.
Chipsee does not bear any responsibility for damage caused by inadequate handling of the product.

Specifications

The CS-CM4-BOX industrial Pi PC offers a broad range of performance and connectivity options for scalable integration, providing expandability according to future needs. Some of the key features are listed in the table below.

Table 332 Key Features

CS-CM4-BOX

CPU

Raspberry Pi® CM4, CM4 Lite; Quad Cortex-A72 at 1.5GHz

Storage

Support for 1 x TF Card3

RAM

2/4/8 GB, Based on CM4

eMMC

16/32 GB, Based on CM4

Display

N/A

Touch

N/A

USB

2 x USB 3.0 Host, 1 x USB Type-C OTG

LAN

2 x Giga LAN (optional PoE support for LAN0)

Audio

3.5mm Audio Out Connector, 2W Speaker Internal

Buzzer

Onboard Buzzer, driven by GPIO

RTC

High accuracy RTC with farad capacitor, can work 1 week after power off (default). High accuracy RTC with lithium coin battery, can work 3 years after power off (optional).

RS232

Default to 2 x RS232, up to 4 x RS232

RS485

Default to 2 x RS4851, these 2 x RS485 can be configured as 2 x RS232

CAN

1 x CAN-BUS

GPIO

Option 1: 4 x input, 4 x output from expander IC (optical isolated, DEFAULT).
Option 2: 6 x CM4 CPU GPIO (conflict with option 1).

I2C

Not Supported

WiFi/BT

Supported but depending on the CM4 selected2

ZIGBEE

Onboard Zigbee module, not mounted by default

HDMI

Yes

SATA II

Not Supported

3G/4G/LTE

Supported, not mounted by default

Camera

Yes, not mounted by default. Available on the board in the embedded PC.
Requires a customized case to be exposed in an enclosed PC.

Power Input

From 6V to 36V

Current

360mA (max) at 15V

Power Consumption

5.4W (max)

Working Temperature

From 0°C to +60°C

OS

Raspberry Pi OS

Dimensions

CS-CM4-BOX: 209 x 125 x 37.3mm

Weight

CS-CM4-BOX: 900g

Mounting Method

CS-CM4-BOX: Rear, VESA


1

The RS485 circuit controls the Input and Output direction automatically, there’s no need to control it from within the software.

2

The default product without the CM4 does not include a Wi-Fi/BT module. You can include a CM4 that has the Wi-Fi/BT module at the Chipsee store during the ordering process.

3

Chipsee designed one TF card slot for CM4 Lite version which has no eMMC to boot OS.

Power Input

The CS-CM4-BOX industrial Pi PC can be powered by a wide range of input voltages: From 6V to 36V DC. There are two types of power input connectors. One is a 3 Pin, 3.81mm screw terminal connector, and the other is a 2.1mm DC input head. As shown in the figure below.

power_img

Power Input

Note that the “+” sign represents the positive power input, and it is printed both at the casing and as a silk-screen on the board of the embedded version. The “-” terminal is shorted to the ground.

Table 333 Power Connector

Power Input Definition

Pin Number

Definition

Description

Pin 1

Positive Input

DC Power Positive Terminal

Pin 2

Negative Input

DC Power Negative Terminal

Pin 3

Ground

Power System Ground

Note

The system ground “G” is connected to power negative “-” on board.

There is another power input port, it is a 2.1mm x 5.5mm x 9.5mm DC jack. For a proper DC power connector, refer to the figure below.

dc_jack_img

DC Jack

Connectivity

There are many connectivity options available on the CS-CM4-BOX industrial Pi PC. It has 2 x USB 3.0 Host, 1 x USB Type-C OTG, 2 x Giga LAN (optional PoE support for LAN0) (RJ45) Ethernet connector supporting up to 1 Gbps, and 4 x UART and 1 x CAN terminals (RS232/RS485/CAN).

RS232/RS485/CAN

The serial communication interfaces (RS485, RS232, and CAN) are routed to a 16-pin 3.81mm terminal, as illustrated in the figure below.

rs232_485_can_img

RS232-RS485-CAN on the CS-CM4-BOX Industrial PC

Attention

  1. RS485_3 and RS485_5 can control the input and output direction automatically. There’s no need to control it from within the software.

  2. The 120Ω match resistor for RS485 is already mounted by default.

  3. The 120Ω match resistor for CAN is NOT mounted by default. Be sure to mount the match resistor when testing CAN.

  4. RS485_3 and RS232_3 share UART3 and can’t work at the same time; RS485_5 and RS232_5 share UART5 and can’t work at the same time. Meaning the product provides 4 x RS232 + 0 x RS485, or 2 x RS232 + 2 x RS485, or 3 x RS232 + 1 x RS485.

The table below offers more detailed description of every pin and its definition:

Table 334 Connectivity Section

RS232 / RS485 / CAN Pin Definition:

Pin Number

Definition

Description

Pin 16

CAN_H

CAN BUS “H” signal

Pin 15

CAN_L

CAN BUS “L” signal

Pin 14

RS485_5-

CPU UART5, RS485 –(B) signal

Pin 13

RS485_5+

CPU UART5, RS485 +(A) signal

Pin 12

RS232_5_RXD

CPU UART5, RS232 RXD signal

Pin 11

RS232_5_TXD

CPU UART5, RS232 TXD signal

Pin 10

RS485_3-

CPU UART3, RS485 –(B) signal

Pin 9

RS485_3+

CPU UART3, RS485 +(A) signal

Pin 8

RS232_3_RXD

CPU UART3, RS232 RXD signal

Pin 7

RS232_3_TXD

CPU UART3, RS232 TXD signal

Pin 6

RS232_2_RXD

CPU UART2, RS232 RXD signal

Pin 5

RS232_2_TXD

CPU UART2, RS232 TXD signal

Pin 4

RS232_0_RXD

CPU UART0, RS232 RXD signal

Pin 3

RS232_0_TXD

CPU UART0, RS232 TXD signal

Pin 2

GND

System Ground

Pin 1

+5V

System +5V Power Output, No more than 1A Current output

GPIO Port

The CS-CM4-BOX industrial Pi PC has a 10 Pin 3.81mm GPIO Connector, as shown in the figure below. The table below gives details about the definition of every Pin.

Attention

  1. In order to use the Isolated Output, you need to add an external Isolated Power to the VDD_ISO and GND_ISO. The power voltage should not exceed 24V.

  2. The output current can achieve 500mA for every channel, but it also depends on the isolated power that is connected.

  3. In order to use the Isolated Input, you need to add a signal to the ISO_InputX and GND_ISO. A 2.4KΩ resistor, as R6, can be added to limit the input current, as shown in the figure above. This resistor should work well for the 5-24V input signal. If your input signal is less than 5V, please change this input resistor.

../../../../../_images/GPIO_Schema.png

Isolated GPIO reduced schematic

gpio_img

GPIO Connector

Table 335 GPIO Connector Pin-out

GPIO Connector Pin Definition:

Pin Number

Definition

Description

Pin 10

VDD_ISO

Isolated Power +5V ~ +24V Input

Pin 9

GND_ISO

Isolated Ground

Pin 8

OUT1

Isolated Output 1

Pin 7

OUT2

Isolated Output 2

Pin 6

OUT3

Isolated Output 3

Pin 5

OUT4

Isolated Output 4

Pin 4

IN1

Isolated Input 1

Pin 3

IN2

Isolated Input 2

Pin 2

IN3

Isolated Input 3

Pin 1

IN4

Isolated Input 4

The CS-CM4-BOX also supports GPIO routed from the Raspberry Pi CM4 CPU directly, if you choose to use the 6 channel CPU GPIO, instead of 8 channel optical isolated GPIO, you can take advantage of the community software libraries of Pi GPIO. If you choose to use CPU GPIO, you won’t be able to use the 8 channel optical isolated GPIO. Below is the pin definition of CPU GPIO:

Warning

Without the optical isolation, CPU might be damanged if dangerous voltages are applied to CPU GPIO. Be careful when using CPU GPIO directly.

Table 336 CPU GPIO Pin Out

CPU GPIO Pin Definition:

Pin Number

Definition

Description

Pin 10

VDD_ISO

VDD_3V3

Pin 9

GND_ISO

GND

Pin 8

OUT1

GPIO22

Pin 7

OUT2

GPIO23

Pin 6

OUT3

GPIO24

Pin 5

OUT4

GPIO25

Pin 4

IN1

GPIO26

Pin 3

IN2

GPIO27

Pin 2

IN3

NC

Pin 1

IN4

NC

cpu_gpio_schema_img

CPU GPIO Reduced Schematic

USB Connectors

There are 2 x USB 3.0 Host, 1 x USB Type-C OTG onboard, as shown in the figure below.

usb_a_img

USB HOST Connectors

Attention

1. These two USB host connectors can drive 500mA for each channel at most.

The product has one USB Type-C OTG connector that works as a slave by default. You can use it to establish a connection with the host PC and for downloading the system to the eMMC of CM4 module.

usb_c_img

USB Type-C OTG Connector

Warning

  1. Be careful not to touch surrounding electronic components accidentally while plugging in USB devices into the embedded Industrial PC version.

  2. Remember to unplug the Type-C cable after flashing OS, otherwise the USB hosts won’t work.

LAN

The 2 x Giga LAN (optional PoE support for LAN0) provides Ethernet connectivity over standardized Ethernet cables as shown in the figure below. The integrated Ethernet interface supports up to 1 Gbps data throughput. These Giga LAN signals come from the CM4 module directly.

lan_img

RJ45 LAN Connector

Note

Use CAT5 or better cables to achieve full data throughput over maximum distance defined by the 1000BASE-T standard (100m).

WiFi & BT Module

The default CS-CM4-BOX without the CM4 does not include a Wi-Fi/BT module.
If you include a CM4 that has the Wi-Fi/BT module, the product will have Wi-Fi/BT feature. The enclosed (CS-CM4-BOX) variant of the product also includes an SMA connector for an external WiFi/BT antenna, as illustrated in the figure below.

wifi_img

WiFi+BT Antenna

Attention

The product does not come shipped with the Wi-Fi/BT module by default.

3G/4G/LTE Module

The CS-CM4-BOX industrial Pi PC is equipped with a mini-PCIe connector that can connect to a 3G/4G/LTE module. The customer will also need a SIM Card Holder and a 3G/4G/LTE antenna to ensure 3G/4G/LTE works on the CS-CM4-BOX. SIM card does NOT support hot plug. Power off before inserting or removing SIM card.

sim_img

SIM Card Direction

../../../../../_images/4G_module.jpeg

Figure 968: 3G/4G/LTE Module

../../../../../_images/4G_com.jpeg

Figure 969: SIM Card Holder and 3G/4G/LTE Antenna

Attention

The product does not come shipped with the 3G/4G/LTE module by default. If you need to use 3G/4G/LTE, you can contact us when placing an order, we can install the necessary hardware for you.

Zigbee Module

The CS-CM4-BOX industrial Pi PC supports an onboard Zigbee module. The Zigbee controller is TI CC2531, and the Raspberry Pi forum supports it.

For CS-CM4-BOX, there is a connector on the backside of the case that you can use to connect the external Zigbee antenna, as described in the figure below. If you need to use WiFi/BT and Zigbee together, we can customized the case and add another SMA connector for you, usually across the rear to the opposite of the current SMA.

../../../../../_images/ZigBee_Con.jpeg

Figure 970: Zigbee controller

zigbee_img

Zigbee Antenna

Attention

The product does not come with the Zigbee module by default.

Camera Connector

The CS-CM4-BOX industrial Pi PC has a 15 Pin Camera Connector, as shown in the figure below. The camera signals come from CAM1. The table below gives details about the definition of every Pin.

camera_img

Camera Connector

Table 337 Camera Connector Pin-out

Camera Connector Pin Definition:

Pin Number

Definition

Description

Pin 1

GND

Power Ground

Pin 2

CAM1_DN0

CAM1_DN0

Pin 3

CAM1_DP0

CAM1_DP0

Pin 4

GND

Power Ground

Pin 5

CAM1_DN1

CAM1_DN1

Pin 6

CAM1_DP1

CAM1_DP1

Pin 7

GND

Power Ground

Pin 8

CAM1_CN

CAM1 Clock signal Negative

Pin 9

CAM1_CP

CAM1 Clock signal Positive

Pin 10

GND

Power Ground

Pin 11

CAM GPIO

CAM GPIO, use for disable camera power and module

Pin 12

NC

Not connected

Pin 13

SCL0

CPU I2C SCL0 signal

Pin 14

SDA0

CPU I2C SDA0 signal

Pin 15

+3.3V

System +3.3V Power Output, No more than 500mA Current output

Attention

  1. The camera connector is supported but not mounted by default. It’s available on the PCB but not exposed on the case, please contact us when placing an order if you need to use camera on the CS-CM4-BOX.

TF Card Slot

The CS-CM4-BOX industrial Pi PC features 1 x TF Card (micro SD) slot. A slot can address up to 128GB of memory.

tf_img

TF (micro SD) Card Slot

Attention

  1. The SD is used only for the Lite version of Compute Module 4 that has no internal eMMC, it can be used to boot system. If you use CM4 with eMMC, this SD will be disabled.

  2. The SD can’t be used for storage extension.

  3. The product does not come shipped with the TF card by default.

Audio Connectors

The CS-CM4-BOX industrial Pi PC features some audio peripherals. It has 1 x 3.5mm audio output jack.
Also, the CS-CM4-BOX industrial Pi PC has a miniature 2W internal speaker for audio reproduction, as well as a small buzzer for alarm/notification sounds.

audio_img

Audio Connector

Attention

By plugging in the headphone cable, the internal speaker will be disabled automatically.

PROG Button

The CS-CM4-BOX industrial Pi PC has one button for entering usb download mode, as shown in the figure below.
When booting with the button being pressed, the Raspberry Pi will boot from the USB connector. You can use this feature to download the OS software to the internal eMMC.
When booting without pressing the button, the Raspberry Pi will boot from the internal eMMC.

There is no need to press the button during regular operation. However, if you need to reinstall the OS, please refer to the detailed information on how to reflash the OS from the Software Documentation.

prog_btn_img

PROG Button

Mounting Procedure

You can mount CS-CM4-BOX with VESA mounting (guide): 75 x 75 mm, 4 x M4 (6mm) screws.

You can also mount CS-CM4-BOX with rear mounting method (guide).

Attention

Please make sure the display is not exposed to high pressure when mounting into an enclosure.

Mechanical Specifications

CS-CM4-BOX

For CS-CM4-BOX, the outer mechanical dimensions are 209 x 125 x 37.3mm (W x L x H).

Please refer to the technical drawing in the figure below for details related to the specific product measurements.

../../../../../_images/CSRA4BOX-TD.png

Figure 971: CS-CM4-BOX Technical Drawing

Disclaimer

This document is provided strictly for informational purposes. Its contents are subject to change without notice. Chipsee assumes no responsibility for any errors that may occur in this document. Furthermore, Chipsee reserves the right to alter the hardware, software, and/or specifications set forth herein at any time without prior notice and undertakes no obligation to update the information contained in this document.

While every effort has been made to ensure the accuracy of the information contained herein, this document is not guaranteed to be error-free. Further, it does not offer any warranties or conditions, whether expressed orally or implied in law, including implied warranties and conditions of merchantability or fitness for a particular purpose. We specifically disclaim any liability with respect to this document, and no contractual obligations are formed either directly or indirectly by this document.

Despite our best efforts to maintain the accuracy of the information in this document, we assume no responsibility for errors or omissions, nor for damages resulting from the use of the information herein. Please note that Chipsee products are not authorized for use as critical components in life support devices or systems.

Technical Support

If you encounter any difficulties or have questions related to this document, we encourage you to refer to our other documentation for potential solutions. If you cannot find the solution you’re looking for, feel free to contact us. Please email Chipsee Technical Support at support@chipsee.com, providing all relevant information. We value your queries and suggestions and are committed to providing you with the assistance you require.