Raspberry Pi CM4 Compute module 4 Dual network port four way isolation type Gigabit Ethernet USB 2.0

$60

Brand：Spotpear

SKU：0101432

Date：2022-02-18 11:03

Part Number：

CM4-ETH-RS485-BASE-B CM4-ETH-RS485-BASE-B-Kit

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Raspberry Pi CM4 Compute module 4 Dual network port four-way isolation type Gigabit Ethernet USB 2.0

CM4-ETH-RS485-BASE-B

For Raspberry Pi Compute Module 4

Features At A Glance

CM4 : for all versions of Compute Module 4
Networking: Gigabit Ethernet RJ45 port × 1; Fast Ethernet RJ45 port × 1
USB: USB 2.0 Type A port × 2
Connector: Isolated RS485 × 4; Power Terminal × 1
Camera: MIPI CSI-2 interface × 2 (15pin 1.0mm FPC connector)
Video: HDMI interface × 1, support 4K 30fps output
Real Time Clock: with battery interface and ability to wake up Compute Module 4
Storage: Onboard Micro SD card slot (for versions without eMMC)
Fan: adjustable speed, 5V
Indicator light: power indicator × 1, CM4 status indicator × 1, user-defined indicator × 2, RS485 communication indicator × 8
Power input: 7-36V
Dimensions: 93.6 × 108.8mm

Connect to Compute Module 4 motherboard

Onboard standard CM4 connector, Supports access to Compute Module 4 Lite/eMMC series motherboards

More rich interfaces

Equipped with dual network ports/RS485/CSI/FAN/HDMI/Micro SD/USB and other interfaces

Application example

Raspberry Pi application or other industrial applications for multi-channel RS485 communication

What's On Board

CM4 connector
Available for all editions of Compute Module 4
IO-VREF
Select GPIO logic voltage, selectable 3.3V (default) or 1.8V
RTC-I2C: I2C bus selection for RTC
Optional SDA0 & SCL0 (default) or GPIO2 & GPIO3
RTC INT: RTC interrupt pin select
D16: Use GPIO16 to receive interrupt signal when RTC generates interrupt (default)
GL-EN: CM4 is powered off when RTC generates an interrupt
PI-RUN: CM4 restarts when RTC generates an interrupt
SYSTEM: System function
WP-DIS: Prevent EEPROM from being overwritten
BT-DIS: Disable bluetooth function, only works on CM4 version with antenna
WIFI-DIS: Disable WiFi function, only valid for CM4 version with
BOOT switch
ON: Boot to USB Tpye-C interface
OFF: Boot to eMMC or Micro SD card
PWR & USB
When the BOOT switch is "ON", it can be used as a programming port and a power supply interface
When the BOOT switch is "OFF", it is only used as a power supply interface
HDMI0
HDMI display interface, support 4K 30fps output

USB
Two-way USB2.0 interface, support USB device insertion
ETHERNET0
CM4 native Gigabit RJ45 Ethernet port
ETHERNET1
USB expansion 100M Ethernet port
CAM0 & CAM1
Two MIPI CSI camera interfaces
Buzzer
GPIO22 control
FAN
Four-wire fan interface, only supports 5V fans, PWM speed regulation (GPIO18 control, no speed measurement)
RTC battery interface
Can be connected to CR2032 coin cell battery
RS485 transceiver indicator
TXn: Transmit information indicator for channel n
RXn: Receive information indicator for channel n
User LED light
USER0: GPIO20 control
USER1: GPIO26 control
PWR
Raspberry Pi power indicator
ACT
Raspberry Pi working status indicator
DC 7~36V
DC DC power supply interface
Power supply terminal
DC DC power supply terminal, support 7~36V wide voltage input
RS485 terminal
Four isolated RS485 interfaces, pitch 5.08mm
Jumper cap
Optional 120R Balance Resistor Jumper Cap
RS485 mode switch
Full-auto: automatic mode, the program operation is simple, the load capacity is weak
Semi-auto: semi-automatic mode, need to manually switch the transceiver mode, high reliability, strong load capacity
Encryption chip
ATSHA204 encryption chip, which can perform multiple encryption to ensure data security and reliability
Micro SD card slot
For access to Micro SD card with system to start Compute Module 4 Lite