The interwebs are abuzz over the announced Raspberry Pi 5 single board computer (SBC). The Raspberry Pi 5 has many new features, many of them enabled by the RP1 custom peripheral control chip (sometimes referred as a “southbridge”) which connects many of the peripheral functions to the processor via four PCIe lanes onboard.
Folks on social media and forums have been asking about connecting to the peripherals now that the RP1 is handling access rather than the processor directly, to include the GPIO header.
Raspberry Pi has now released a draft 88 page PDF datasheet for the RP1. It appears to anwer many of the questions on how peripheral communications happen.
This information should allow operating system and software library developers to port software to work with Raspberry Pi 5 peripherals.
Check out the RP1 draft datasheet here and all Raspberry Pi datasheets here.
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