Parts List/Tune Up Info

CC2642R

SWRS194G –JANUARY 2018 – REVISED APRIL 2020

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Detailed Description

6.3 Radio (RF Core)

The RF Core is a highly flexible and future proof radio module which contains an Arm Cortex-M0

processor that interfaces the analog RF and base-band circuitry, handles data to and from the system

CPU side, and assembles the information bits in a given packet structure. The RF core offers a high level,

command-based API to the main CPU that configurations and data are passed through. The Arm Cortex-

M0 processor is not programmable by customers and is interfaced through the TI-provided RF driver that

is included with the SimpleLink Software Development Kit (SDK).

The RF core can autonomously handle the time-critical aspects of the radio protocols, thus offloading the

main CPU, which reduces power and leaves more resources for the user application. Several signals are

also available to control external circuitry such as RF switches or range extenders autonomously.

The various physical layer radio formats are partly built as a software defined radio where the radio

behavior is either defined by radio ROM contents or by non-ROM radio formats delivered in form of

firmware patches with the SimpleLink SDKs. This allows the radio platform to be updated for support of

future versions of standards even with over-the-air (OTA) updates while still using the same silicon.

6.3.1 Bluetooth 5.1 Low Energy

The RF Core offers full support for Bluetooth 5.1 Low Energy, including the high-sped 2-Mbps physical

layer and the 500-kbps and 125-kbps long range PHYs (Coded PHY) through the TI provided Bluetooth

5.1 stack or through a high-level Bluetooth API. The Bluetooth 5.1 PHY and part of the controller are in

radio and system ROM, providing significant savings in memory usage and more space available for

applications.

The new high-speed mode allows data transfers up to 2 Mbps, twice the speed of Bluetooth 4.2 and five

times the speed of Bluetooth 4.0, without increasing power consumption. In addition to faster speeds, this

mode offers significant improvements for energy efficiency and wireless coexistence with reduced radio

communication time.

Bluetooth 5.1 also enables unparalleled flexibility for adjustment of speed and range based on application

needs, which capitalizes on the high-speed or long-range modes respectively. Data transfers are now

possible at 2 Mbps, enabling development of applications using voice, audio, imaging, and data logging

that were not previously an option using Bluetooth low energy. With high-speed mode, existing

applications deliver faster responses, richer engagement, and longer battery life. Bluetooth 5.1 enables

fast, reliable firmware updates.