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If you are using the CM4’s GPIOs for a bespoke application (e.g., driving a CNC router), you need to know exactly which CM4 pin (e.g., GPIO22) routes to which physical pad on the carrier board. A schematic might give you the name; the boardview gives you the physical location to solder a wire.
It is important to address the “Exclusive” aspect directly. Most exclusive boardview files for the CM4 are not authorized by Raspberry Pi Ltd. cm4 94v0 boardview exclusive
Engineers designing custom carrier boards for the CM4 can use the Boardview to double-check signal integrity and ensure their routing matches the module’s expectations, particularly regarding high-speed interfaces like PCIe or USB 3.0. If you are using the CM4’s GPIOs for
To the uninitiated: a schematic shows you the logical connections (what connects to what). A boardview (or .brd, .cad, .fz file) shows you the physical location. Most exclusive boardview files for the CM4 are
A CM4 94V0 boardview file typically contains:
If you are designing a custom carrier board, the boardview helps you cross-reference your layout. You can verify which connector pin corresponds to which GPIO alt-function without constantly flipping through a 50-page PDF schematic.
Assuming you have obtained an exclusive .brd file for a CM4 carrier board (94V0 rated), follow this workflow: