Raspberry Pi Compute Module 4 – Benutzerhandbuch

Kolophon

© 2022-2025 Raspberry Pi Ltd
This documentation is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND)

Freigeben	1
Bauen Datum	22
Bauen Version	0afd6ea17b8b

Rechtlicher Hinweis

TECHNICAL AND RELIABILITY DATA FOR RASPBERRY PI PRODUCTS (INCLUDING DATASHEETS) AS MODIFIED FROM TIME TO TIME (“RESOURCES”) ARE PROVIDED BY RASPBERRY PI LTD (“RPL”) “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW IN NO EVENT SHALL RPL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, LOSS OF USE, DATA, OR PROFITS, OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THE RESOURCES, EVEN IF ADVISED OF THE POSSI BILITY OF SUCH DAMAGE.

RPL reserves the right to make any enhancements, improvements, corections or any other modifications to the RESOURCES or any products described in them at any time and without further notice

Der RESSOURCEN are intended for skilled users with suitable levels of design knowledge. Users are solely responsible for their selection and use of the RESOURCES and any application of the products described in them. User agrees to indemnify and hold RPL harmless against all liabilities, costs, damages or other losses arising out of their use of the RESOURCES

RPL erteilt Benutzern die Erlaubnis, die RESSOURCEN ausschließlich in Verbindung mit den Raspberry Pi-Produkten zu verwenden. Jede andere Verwendung der RESSOURCEN ist untersagt. Es wird keine Lizenz für andere RPL- oder andere geistige Eigentumsrechte Dritter erteilt.

AKTIVITÄTEN MIT HOHEM RISIKO. Raspberry Pi products are not designed, manufactured or intended for use in hazardous environments requiring fail safe performance, such as in the operation of nuclear facilities, aircraft navigation or communication systems, air traffic control, weapons systems or safety-critical applications (including life support systems and other medical devices), in which the failure of the products could lead directly to death, personal injury or severe physical or environmental damage (“High Risk Activities). RPL specifically disclaims any express or implied warranty of fitness for High Risk Activities and accepts no liability for use or inclusions of Raspberry Pi products in High Risk Activities

Raspberry Pi products are provided subject to RPLs Standard Terms. RPLs provision of the RESOURCES does not expand or otherwise modify RPL’s Allgemeine Geschäftsbedingungen einschließlich, aber nicht beschränkt auf die darin enthaltenen Haftungsausschlüsse und Garantien.

Versionsverlauf des Dokuments

Freigeben	Datum	Beschreibung
1	Mar 2025	Initial release. This document is heavily based on the ‘Raspberry Pi Compute Module 5 forward guidance’ whitepaper.

Geltungsbereich des Dokuments

Dieses Dokument gilt für die folgenden Raspberry Pi-Produkte:

Pi 0

Pi 1

Pi 2

Pi 3

Pi 4

Pi 400

Pi 5

Pi 500

CM1

CM3

CM4

CM5

Pico

Pico2

0

W

H

A

B

A

B

B

Alle

Alle

Alle

Alle

Alle

Alle

Alle

Alle

Alle

Alle

Einführung

Das Raspberry Pi Compute Module 5 setzt die Raspberry Pi-Tradition fort und bietet aus dem neuesten Raspberry Pi-Flaggschiff ein kleines, hardwareäquivalentes Produkt für eingebettete Anwendungen. Das Raspberry Pi Compute Module 5 hat den gleichen kompakten Formfaktor wie das Raspberry Pi Compute Module 4, bietet jedoch höhere Leistung und einen verbesserten Funktionsumfang. Natürlich gibt es einige Unterschiede zwischen dem Raspberry Pi Compute Module 4 und dem Raspberry Pi Compute Module 5, die in diesem Dokument beschrieben werden.

NOTIZ
For the few customers who are unable to use Raspberry Pi Compute Module 5, Raspberry Pi Compute Module 4 will stay in production until at least 2034.
The Raspberry Pi Compute Module 5 datasheet should be read in conjunction with this whitepaper.
https://datasheets.raspberrypi.com/cm5/cm5-datasheet.pdf

Hauptmerkmale

Raspberry Pi Compute Module 5 has the following features:

• Quad-core 64-bit Arm Cortex-A76 (Armv8) SoC clocked @ 2.4GHz
• 2GB, 4GB, 8GB, or 16GB LPDDR4 SDRAM
• On-board eMMC flash memory, OGB (Lite model), 16GB, 32GB, or 64GB options
• 2x USB 3.0-Anschlüsse
• 1 Gb Ethernet interface
• 2x 4-lane MIPI ports supporting both DSI and CSI-2
• 2x HDMI ports able to support 4Kp60 simultaneously
• 28x GPIO pins
• On-board test points to simplify production programming
• Internal EEPROM on the bottom to improve security
• On-board RTC (external battery via 100-pin connectors)
• On-board fan controller
• On-board Wi-Fi®/Bluetooth (depending on SKU)
• 1-lane PCIe 2.0′
• Type-C PD PSU support

NOTIZ
Not all SDRAM/eMMC configurations are available. Please check with our sales team.
In some applications PCIe Gen 3.0 is possible, but this is not officially supported.

Kompatibilität mit Raspberry Pi Compute Module 4

For most customers, Raspberry Pi Compute Module 5 will be pin-compatible with Raspberry Pi Compute Module 4.
The following features have been removed/altered between the Raspberry Pi Compute Module 5 and Raspberry Pi Compute Module 4 models:

• Composite-Video
• The composite output available on Raspberry Pi 5 is NOT routed out on Raspberry Pi Compute Module 5
• 2-lane DSI port
• There are two 4-lane DSI ports available on Raspberry Pi Compute Module 5, muxed with the CSI ports for a total of two
• 2-lane CSI port
• There are two 4-lane CSI ports available on Raspberry Pi Compute Module 5, muxed with the DSI ports for a total of two
• 2x ADC inputs

Erinnerung

Raspberry Pi Compute Module 4’s maximum memory capacity is 8GB, whereas Raspberry Pi Compute Module 5 is available in a 16GB RAM variant.

Unlike Raspberry Pi Compute Module 4, Raspberry Pi Compute Module 5 is NOT available in a 1GB RAM variant.

Analoges Audio

Analogue audio can be muxed onto GPIO pins 12 and 13 on Raspberry Pi Compute Module 5, in the same way as on Raspberry Pi Compute Module 4.

Use the following device tree overlay to assign analogue audio to these pins:

Due to an errata on the RP1 chip, GPIO pins 18 and 19, which could be used for analogue audio on Raspberry Pi Compute Module
4, are not connected to the analogue audio hardware on Raspberry Pi Compute Module 5 and cannot be used.

NOTIZ
The output is a bitstream rather than a genuine analogue signal. Smoothing capacitors and an ampUm einen Line-Level-Ausgang anzusteuern, wird auf der IO-Platine ein Verstärker benötigt.

Änderungen am USB-Boot

USB booting from a flash drive is only supported via the USB 3.0 ports on pins 134/136 and 163/165
Raspberry Pi Compute Module 5 does NOT support USB host boot on the USB-C port
Unlike the BCM2711 processor, the BCM2712 does not have an XHCI controller on the USB-C interface, just a DWC2 controller on pins 103/105. Booting using 1800t is done via these pins.

Wechsel in den Modul-Reset- und Power-Down-Modus

1/0 pin 92 is now set to w Button rather than sus PG this means you need to use a PMIC EN to reset the module.

The PRIC ENABLE Signal resets the PMIC, and therefore the SoC. You can view PRIC EN when it’s driven low and released, which is functionally similar to driving tus Po low on Raspberry Pi Compute Module 4 and releasing it.

Raspberry Pi Compute Module 4 has the added benefit of being able to reset peripherals via the nEXTRST signal. Raspberry Pi Compute Module 5 will emulate this functionality on CAM GPIOT.

GLOBAL EN/PHIC EN are wired directly to the PMIC and bypass the OS completely. On Raspberry Pi Compute Module 5, use
GLOBAL EN/PHIC Es to execute a hard (but unsafe) shutdown

If there is a need, when using an existing 10 board, to retain the functionality of toggling I/O pin 92 to start a hard reset, you should intercept the Button at the software level; rather than having it invoke a system shutdown, it can be used to generate a software interrupt and, from there, to trigger a system reset directly (eg. write to S)

Device tree entry handling a power button (arch/arm64/boot/dts/broadcom/bcm2712-rpi-cm5.dtsi).

Code 116 is the standard event code for the kernel’s KEY POWER event, and there is a handler for this in the OS.

Raspberry Pi recommends using kernel watchdogs if you are concerned about the firmware or the OS crashing and leaving the power key unresponsive. ARM watchdog support is already present in Raspberry Pi OS via the device tree, and this can be customised to individual use cases. In addition, a long press/pull on the PIR Button (7 seconds)  will cause the PMIC’s built-in handler to shut down the device.

Detaillierte Pinbelegungsänderungen

CAM1 and DSI1 signals have become dual-purpose and can be used for either a CSI camera or a DSI display.

The pins previously used for CAMO and DSIO on Raspberry Pi Compute Module 4 now support a USB 3.0 port on Raspberry Pi Compute Module 5.

The original Raspberry Pi Compute Module 4 VBAC COMP pin is now a VBUS-enabled pin for the two USB 3.0 ports, and is active high. Raspberry Pi Compute Module 4 has extra ESD protection on the HDMI, SDA, SCL, HPD, and CEC signals. This is removed from Raspberry Pi Compute Module 5 due to space limitations. If required, ESD protection can be applied to the baseboard, although Raspberry Pi Ltd does not regard it as essential.

Stift	CM4	CM5	Kommentar
16	SYNC_IN	Fan_tacho	Fan tacho input
19	Ethernet nLED1	Fan_pwn	Fan PWM output
76	Reserviert	VBAT	RTC battery. Note: There will be a constant load of a few uA, even if CM5 is powered.
92	RUN_PG	PWR_Button	Replicates the power button on Raspberry Pi 5. A short press signals that the device should wake up or shut down. A long press forces shutdown.
93	nRPIBOOT	nRPIBOOT	If the PWR_Button is low, this pin will also be set low for a short time after power-up.
94	AnalogIP1	CC1	This pin can connect to the CC1 line of a Type-C USB connector to enable the PMIC to negotiate 5A.
96	AnalogIP0	CC2	This pin can connect to the CC2 line of a Type-C USB connector to enable the PMIC to negotiate 5A.
99	Global_EN	PMIC_ENABLE	No external change.
100	nEXTRST	CAM_GPIO1	Pulled up on Raspberry Pi Compute Module 5, but can be forced low to emulate a reset signal.
104	Reserviert	PCIE_DET_nWAKE	PCIE nWAKE. Pull up to CM5_3v3 with an 8.2K resistor.
106	Reserviert	PCIE_PWR_EN	Signals whether the PCIe device can be powered up or down. Active high.
111	VDAC_COMP	VBUS_EN	Output to signal that USB VBUS should be enabled.
128	CAM0_D0_N	USB3-0-RX_N	May be P/N swapped.
130	CAM0_D0_P	USB3-0-RX_P	May be P/N swapped.
134	CAM0_D1_N	USB3-0-DP	USB 2.0 signal.
136	CAM0_D1_P	USB3-0-DM	USB 2.0 signal.
140	CAM0_C_N	USB3-0-TX_N	May be P/N swapped.
142	CAM0_C_P	USB3-0-TX_P	May be P/N swapped.
157	DSI0_D0_N	USB3-1-RX_N	May be P/N swapped.
159	DSI0_D0_P	USB3-1-RX_P	May be P/N swapped.
163	DSI0_D1_N	USB3-1-DP	USB 2.0 signal.
165	DSI0_D1_P	USB3-1-DM	USB 2.0 signal.
169	DSI0_C_N	USB3-1-TX_N	May be P/N swapped.
171	DSI0_C_P	USB3-1-TX_P	May be P/N swapped.

Darüber hinaus sind die PCIe-CLK-Signale nicht mehr kapazitiv gekoppelt.

Leiterplatte

Raspberry Pi Compute Module 5′s PCB is thicker than Raspberry Pi Compute Module 4′s, measuring at 1.24mm+/-10%.

Streckenlängen

HDMI0 track lengths have changed. Each P/N pair remains matched, but the skew between pairs is now <1mm for existing motherboards. This is unlikely to make a difference, as the skew between pairs can be in the order of 25 mm.

HDMI1 track lengths have also changed. Each P/N pair remains matched, but the skew between pairs is now <5mm for existing motherboards. This is unlikely to make a difference, as the skew between pairs can be in the order of 25 mm.
Die Längen der Ethernet-Leitungen haben sich geändert. Jedes P/N-Paar ist weiterhin identisch, der Versatz zwischen den Paaren beträgt bei bestehenden Motherboards jedoch jetzt <4 mm. Dies dürfte jedoch keinen Unterschied machen, da der Versatz zwischen den Paaren bis zu 12 mm betragen kann.

Anschlüsse

Die beiden 100-poligen Stecker wurden durch eine andere Marke ersetzt. Diese sind mit den vorhandenen Steckern kompatibel, wurden aber bei hohen Strömen getestet. Das Gegenstück, das auf das Motherboard passt, ist Amphenol P/N 10164227-1001A1RLF

Strombudget

As Raspberry Pi Compute Module 5 is significantly more powerful than Raspberry Pi Compute Module 4, it will consume more electrical power. Power supply designs should budget for SV up to 2.5A. If this creates an issue with an existing motherboard design, it is possible to reduce the CPU clock rate to lower the peak power consumption.

The firmware monitors the current limit for USB, which effectively means that usb mas surrant, enable is always 1 on CM5, the 10 board design should take the total USB current required into consideration.

The firmware will report the detected power supply capabilities (if possible) via device-tree. On a running system, see /proc/device tree/chosen/poser/Diese files werden als 32-Bit-Big-Endian-Binärdaten gespeichert.

Softwareänderungen/-anforderungen

Aus Sicht der Software view, die Änderungen in der Hardware zwischen Raspberry Pi Compute Module 4 und Raspberry Pi Compute Module 5 werden durch einen neuen Gerätebaum vor dem Benutzer verborgen files, was bedeutet, dass der Großteil der Software, die den Standard-Linux-APIs entspricht, ohne Änderungen funktioniert. Der Gerätebaum fileStellen Sie sicher, dass beim Booten die richtigen Treiber für die Hardware geladen werden.
Gerätebaum files finden Sie im Raspberry Pi Linux Kernel-Baum. Zum Beispielampauf:
https://github.com/raspberrypi/linux/blob/rpi-612.y/arch/arm64/boot/dis/broadcom/bom2712-pi-om5.dtsi.

Benutzern, die auf Raspberry Pi Compute Module 5 umsteigen, wird empfohlen, die in der folgenden Tabelle angegebenen oder neueren Softwareversionen zu verwenden. Obwohl die Verwendung von Raspberry Pi OS nicht zwingend erforderlich ist, ist es eine nützliche Referenz und daher in der Tabelle aufgeführt.

Software	Version	Datum	Hinweise
Raspberry Pi OS	Bookworm (12)
Firmware		From 10 Mar 2025	Sehen https://pip.raspberrypi.com/categories/685-app-notes-guides- whitepapers/documents/RP-003476-WP/Updating-Pi-firmware.pdf for details on upgrading firmware on an existing image. Note that Raspberry Pi Compute Module 5 devices come pre-programmed with appropriate firmware
Kernel	6.12.x	Von 2025	This is the kernel used in Raspberry Pi OS

Moving to standard Linux APIs/libraries from proprietary drivers/
Firmware

Alle unten aufgeführten Änderungen waren Teil des Übergangs von Raspberry Pi OS Bullseye zu Raspberry Pi OS Bookworm im Oktober 2023. Während Raspberry Pi Compute Module 4 die älteren, veralteten APIs verwenden konnte (da die erforderliche Legacy-Firmware noch vorhanden war), ist dies bei Raspberry Pi Compute Module 5 nicht der Fall.

Raspberry Pi Compute Module 5 basiert nun, wie Raspberry Pi 5, auf dem DRM-Display-Stack (Direct Rendering Manager) und nicht mehr auf dem alten Stack, der oft als DispmanX bezeichnet wird. Da Raspberry Pi Compute Module 5 keine Firmware-Unterstützung für DispmanX bietet, ist ein Wechsel zu DRM unerlässlich.

A similar requirement applies to cameras, Raspberry Pi Compute Module 5 only supports the libcamera library’s API, so older applications that use the legacy firmware MMAL APIs, such as raspi-still and rasps-vid, no longer function.
Anwendungen, die die OpenMAX-API (Kameras, Codecs) verwenden, funktionieren nicht mehr auf dem Raspberry Pi Compute Module 5 und müssen daher für die Verwendung von V4L2 neu geschrieben werden. Beispiel:ampDateien hierzu finden Sie im GitHub-Repository „libcamera-apps“, wo es für den Zugriff auf die H264-Encoder-Hardware verwendet wird.

OMXPlayer is no longer supported, as it also uses the MMAL API for video playback, you should use the VLC application. There is no command-line compatibility between these applications: see the VLC documentation for details on usage.
Raspberry Pi previously published a whitepaper that discusses these changes in more detail: https://pip.raspberrypi.com/categories/685-app-notes-guides-whitepapers/documents/RP-006519-WP/Transitioning-from-Buliseye-to-Bookworm.pdf.

Weitere Informationen

While not strictly related to the transition from Raspberry Pi Compute Module 4 to Raspberry Pi Compute Module 5, Raspberry Pi Ltd has released a new version of the Raspberry Pi Compute Module provisioning software and also has two distro generation tools that users of Raspberry Pi Compute Module 5 may find useful.

rpi-sb-provisioner is a minimal-input, automatic secure boot provisioning system for Raspberry Pi devices. It is entirely free to download and use, and can be found on our GitHub page here: https://github.com/raspberrypi/rpi-sb-provisioner.

pi-gen is the tool used to create the official Raspberry Pi OS images, but it is also available for third parties to use to create their own distributions. This is the recommended approach for Raspberry Pi Compute Module applications that require customers to build a custom Raspberry Pi OS-based operating system for their specific use case. This is also free to download and use, and can be found here: https://github.com/RPi-Distro/pi-gen. The pi-gen tool integrates well with rpi-sb-provisioner to provide an end-to-end process for generating secure boot OS images and implementing them on Raspberry Pi Compute Module 5.

rpi-image-gen is a new image creation tool (https://github.com/raspberrypi/rpi-image-gen) that may be more appropriate for more lightweight customer distributions

For bring-up and testing and where there is no requirement for the full provisioning system rpiboot is still available on Raspberry Pi Compute Module 5. Raspberry Pi Ltd recommends using a host Raspberry Pi SBC running the latest version of Raspberry Pi OS and the latest rathoot from https://github.com/raspberrypi/usbboot. You must use the ‘Mass Storage Gadget option when running rpiboot, as the previous firmware-based option is no longer supported.

Kontaktdetails für weitere Informationen

Bitte kontaktieren Sie
applications@iraspberrypi.com
if you have any queries about this whitepaper.
Web: www.raspberrypi.com

Dokumente / Ressourcen

Raspberry Pi Rechenmodul 4 [pdf] Benutzerhandbuch Compute-Modul 4, Modul 4

Verweise

• Bedienungsanleitung