The low-power RF Core (LRF) implements a high performance and highly flexible RF sub system containing RF and baseband circuitry in addition to a software defined digital radio (LRFD). LRFD provides a high-level, command-based API to the main CPU and handles all of the timing critical and low-level details of many different radio PHYs. Several signals are also available to control external circuitry such as RF switches or range extenders autonomously.

The software-defined modem is not programmable by customers but is instead loaded with precompiled images provided in the radio driver in the 适用于 CC23xx 器件的 SimpleLink™ 低功耗 F3 软件开发套件 (SDK). This mechanism allows the radio platform to be updated for support of future versions of standards with over-the-air (OTA) updates while still using the same silicon. LRFD stores the code images in the RF SRAM and does not make use of any ROM memory, thus image loading from NV memory only occurs once after boot and also, no patching is required when exiting power modes.