Raspberry Pi 4 Model | B Full Exclusive Schematic
The standard remains backwards compatible but adds new multiplexed functions.
+-----------------------------------------------------------------------+ | Broadcom BCM2711 SoC | | (Quad-core Cortex-A72 @ 1.5GHz / VideoCore VI / PCIe / Dual HDMI) | +-----------------------------------------------------------------------+ | | | | +-----------------+ +-----------------+ +-------------+ +---------+ | LPDDR4 SDRAM | | USB 3.0 / 2.0 | | Gigabit Enet| | Wireless| | (1/2/4/8GB RAM) | | VIA VL805 PCIe | | Broadcom | | Cypress | | | | Controller | | BCM54213PE | | CYW43455| +-----------------+ +-----------------+ +-------------+ +---------+ Core Subsystems on the Board: Broadcom BCM2711 SoC.
A: The official schematic is a read‑only PDF. However, the community‑maintained KiCad library referenced earlier provides an editable starting point, though you must adapt it to match your specific Pi revision.
have not been publicly released due to proprietary design elements, the official Raspberry Pi 4 Reduced Schematics provide a comprehensive overview of the board's primary hardware architecture and signal routing. Core Hardware Components Raspberry Pi 4 Model B Raspberry Pi 4 Model B Full Schematic
+---------------------------------------------+ | Broadcom BCM2711 | +---------------------------------------------+ || || [TMDS Data / Clock] [TMDS Data / Clock] || || +--------------+ +--------------+ | ESD Standard | | ESD Standard | | Protection | | Protection | +--------------+ +--------------+ || || [Micro-HDMI 0] [Micro-HDMI 1] Key Components in the Video Circuit:
The VL805 bridges the PCIe lane into two high-speed USB 3.0 ports.
The schematic charts two distinct HDMI blocks wired with internal ESD protection arrays and level shifters to safeguard the SoC from hot-plugging voltage spikes. The standard remains backwards compatible but adds new
Would you like a link to the official reduced schematic, the CM4 I/O board schematic (full), or the BCM2711 peripheral datasheet?
The release of the full schematic for the Raspberry Pi 4 Model B was a significant event for the open-source hardware community. While the Raspberry Pi Foundation primarily releases the schematics as a resource for accessory designers, system integrators, and advanced hobbyists, the document offers a fascinating glimpse into the engineering required to create a credit-card-sized, high-performance ARM computer.
One of the most critical sections of the schematic is the . The Pi 4 uses the MaxLinear MXL7704 . The schematic charts two distinct HDMI blocks wired
configurations for specific protocols (SPI/I2C/UART)
(or most of their consumer SBCs). What they do provide is a reduced schematic and mechanical drawings , plus a BCM2711 peripheral datasheet .
Using the schematic framework, you can diagnose the most common failure points encountered by hardware designers and makers: Diagnosing the "No Boot / Solid Red LED" Issue
Whether you are soldering a repair, debugging a kernel driver why your interrupt pin won't fire, or simply marveling at the engineering that puts a desktop computer on a credit card, the schematic is your definitive guide.
– Some individuals have traced Pi 4 PCBs and published partial schematics. These are not verified , may contain errors, and can be taken down for IP reasons. Search carefully, but use at your own risk.