Raspberry Pi CM4-to-CM3-Board User Guide

Overview

Raspberry Pi Compute Module 4 CM4 to CM3 Adapter CM3+ Adapter board converted from cm4

Resource comparison

The adapter board calls CM4 resources

CM4-to-CM3-Board	CM4
HDMI	HDMI0
GPIO0~27	GPIO0~27
GPIO28、GPIO29	GPIO44（SDA0）、GPIO45（SCL0）
GPIO31、GPIO33	CAM_GPIO
GPIO30、GPIO32、GPIO33~45	NC
CSI0	CSI1
CSI1	CSI0
DSI0	DSI1
DSI1	DSI0
USB2.0	USB2.0
SDIO	SDIO

Onboard resources

CM4 connector: connect CM4
CM4 working status light: used to judge whether CM4 is working
MP28164: DC buck-boost chip
Power supply selection: the resistor on the left - direct power supply; the resistor on the right - power supply after passing through the DC buck-boost chip (default)
IO level selection: select the IO level of CM4 (3.3V is selected by default)
CM3 interface: used to connect to the CM3 backplane

Manual

Official Manual

Software

To：

Dear Customers, There may be a lag of several hours before we could process your order, depending on the time difference between your location and ours. Sincerely hoping your understanding!

Email(support)

services01@spotpear.com

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