for 2 see https://datasheets.raspberrypi.com/hat/ ... cation.pdfHi,
Thanks for your information. After checking the documents you've suggested. I still have several questions:
1. We saw the pin PCIE_PWR_EN exist on the 16-pin FFC connector but not exists in M2 connector located on the CM5 IO board. For which document I could refer to on how to provide this enable signal?
2. For "AI HAT+ might need additional power from the GPIO40 (depending on which one you may want to connect) and will need I2C interface from GPIO40 to be auto-detected", where I could find the information for power dissipation for AI HAT+? In addition, what does in mean for I2C interface to be auto-detected?
for 1: a M.2 is a spec on it's own. For questions related to M.2 refer to the official specs.
according to https://datasheets.raspberrypi.com/pcie ... andard.pdf
What other info do you wneed?2.1.1. PCIE_PWR_EN pin
This pin is a 3.3V output from the Raspberry Pi to a HAT+ or other add-on board, and signals to the HAT+ to power up
any supplies. For example, in the instance of the Raspberry Pi M.2 M Key HAT+, this enables the M.2 3.3V power (which
is generated from the incoming 5V). Provide a 100K low pull on this pin on any HAT+.
Statistics: Posted by aBUGSworstnightmare — Mon Mar 24, 2025 9:02 am