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
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.
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). |
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. |
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 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.
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
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-RS485-CAN on the CS-CM4-BOX Industrial PC
Attention
RS485_3 and RS485_5 can control the input and output direction automatically. There’s no need to control it from within the software.
The 120Ω match resistor for RS485 is already mounted by default.
The 120Ω match resistor for CAN is NOT mounted by default. Be sure to mount the match resistor when testing CAN.
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:
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
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.
The output current can achieve 500mA for every channel, but it also depends on the isolated power that is connected.
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, has been added to limit the input current, as shown in the figure below. This resistor should work well for the 5-24V input signal. If your input signal is less than 5V, please change this input resistor. The reduced schematic is for reference purpose, if you need the precise resistor schematic, please contact us.
Isolated GPIO reduced schematic
GPIO Connector
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.
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 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 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 Type-C OTG Connector
Warning
Be careful not to touch surrounding electronic components accidentally while plugging in USB devices into the embedded Industrial PC version.
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.
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+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 Card Direction
Figure 983: 3G/4G/LTE Module¶
Figure 984: 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.
Figure 985: Zigbee controller¶
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 Connector
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
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 (micro SD) Card Slot
Attention
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.
The SD can’t be used for storage extension.
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 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 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.
Figure 986: 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.