Wi-Fi/Bluetooth M.2 Key E Pinout Definition Application Note

2021-11-22
●Introduction:
■M.2 is a form factor for mobile adapters defined by the PCI-SIG . The pinouts for M.2 sockets are defined in the PCI Express M.2 Specification.
■M.2 sockets with mechanical Key E are used on platforms based on NXP MPUs and MCUs to support wireless connectivity modules based on NXP Wi-Fi/Bluetooth radios.
■Some of the signals defined in the pinout are used to connect optional sideband and debug signals used by NXP Wi-Fi/Bluetooth radios.
■In order to ensure the proper connection for sideband and debug signals, this document defines the pin assignments for M.2 sockets (mechanical Key E) on platforms based on NXP MPUs and MCUs.
■Before building your board, check the interface connector specification from the wireless module vendor to confirm the pinout used by the module.

NXP

M.2

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Bluetooth

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Application note & Design Guide

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16 September 2021

Rev. 2

AN13049

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