DA14531 Bluetooth® Direct Test Mode

PublishTime： 2023-06-26 Manufacturer： Renesas Type： Application note & Design Guide Language： English

●This application note explains how to set up RF testing modes for DA14531 BLE SoC.
●The DA14531 is an ultra-low power SoC integrating a 2.4 GHz transceiver and an ArmM® Cortex®- M0+™ microcontroller with a RAM of 48 kB and a One-Time Programmable (OTP) memory of 32 kB. It can be used as a standalone application processor or as a data pump in hosted systems.
●This document describes how to measure the RF performance of the DA14531 with a Bluetooth® tester like the Rohde & Schwarz (R&S) CBT, the R&S CMW270 and the Anritsu MT8852B using the Bluetooth Low Energy Direct Test Mode (DTM).
●Additionally, DTM can be used to set the Bluetooth LE device into different RX and TX modes. To provide an easy access to the DTM commands Renesas provides “RF Master”, a tool that can be found in the SmartSnippets Toolbox.
●The Direct Test Mode is described in the Bluetooth specification. The Bluetooth LE RF PHY test specification uses DTM for all TX and RX test cases. Frequency hopping and whitening are disabled.
●DTM uses a direct communication channel between the Bluetooth LE DUT and the Bluetooth tester to control the DUT. The DA14531 SoC supports Direct Test Mode (DTM) for the RF PHY as specified by the Bluetooth SIG. The DUT, the DA14531 SoC, communicates with the Bluetooth tester over a 2- wire UART.
●Details for the software setup and the hardware setup are explained in Section 4.1 and Section 4.2.
●Many items discussed in AN-B-043 (DA1468x Bluetooth Direct Test Mode) are also applicable for the DA14531, Ref. [2], and we recommend to read this AN-B-043 application note as well. It shows alternative connection possibilities and discusses a larger variety of Bluetooth testers, amongst others the LitePoint IQxel-M

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