Terms and Definitions

Bluetooth Low Energy Terms and Acronyms

Application-program interface
API
Refers to the function call.
BLE
Bluetooth Low Energy
BR
Basic Rate
BR/EDR
Basic Rate/Enhanced Data Rate
CCCD
Client Characteristic Configuration Descriptor
Coding Indication
CI
Bit field in every BLE packet sent on LE Coded PHY that indicates the coding of the PDU (S=2 or S=8).
Device Address
A 48-bit value used to identify a device. A device address can be public, random static, or random private.
Forward Error Correction
FEC
Error correction used to improve the sensitivity in the LE Coded PHY.
GAP
Generic Access Protocol
GFSK
Gaussian Frequency-Shift Keying
HCI
Host Control Interface
Identity Address
IA
A Resolvable Private Address that is resolvable with an Identity Resolving Key yields an Identity Address.
Identity Resolving Key
IRK
A key exchanged during Phase 3 of the bonding process. A Resolving List contains a local and a peer Identity Resolving Key as well as an Identity Address.
ISM
Industrial, Scientific, and Medical
L2CAP
Link Logical Control and Adaption Protocol
LE
Low Energy
The link budget is the ratio between the Tx power and the Rx sensitivity level.
LL
A Bluetooth Low Energy stack layer in on the controller side.
LTK
Long Term Key
A term defined by the Bluetooth Core Specification Version 5.1 referring to the key used for encypted connections.
Multi-path fading
When the radio signal is not only received via the direct path, but also via reflections off nearby objects. The direct and reflected paths may interfere constructively or destructively
Physical layer
PHY
The physical layer is the lowest layer of the Bluetooth protocol stack. It configures the physical parameters of the radio transmission and reception. It determines how a bit (and its value) are represented over the air.
PDU
Protocol Data Unit
Resolving List
RL
A Link Layer maintained table of one or more entries of a local and peer Identity Resolving Key associated to an Identity Address.
Resolvable Private Address
RPA
A resolvable address is one that can be resolved given that the device has an Identity Resolving Key. By resolving a Resolvable Private Address one can determine its Identity Address.
Resolvable Private Address Only
RPAO
A required GATT characteristic called “Resolvable Private Address Only” that is used with Network Privacy Mode.
Simple Non-Volatile storage
SNV
An abstraction layer used by the BLE stack for reading and writing to non volatile memory. The GAPBondMgr layer of stack uses SNV to store keys. This region can also be used by the user.
White List
WL
A filter policy in the Controller’s Link Layer that can prevent unwanted link layer events from waking up the host.

General Terms and Acronyms

CCFG
Customer Configuration
Customer Configuration is set by the application and contains configuration parameters for the ROM boot code, device hardware, and device firmware. It contains lock-bits on the last page of flash. You can read more in the Customer Configuration section in the CC13x2 CC26x2 SimpleLink Wireless MCU Technical Reference Manual.
CCS
Code Composer Studio
An integrated development environment to develop applications for Texas Instruments embedded processors. Download: Code Composer Studio
cJTAG
Class 4 IEEE 1149.7: Standard for Reduced-pin and Enhanced-functionality Test Access Port and Boundary-scan Architecture. This is known by acronym cJTAG (compact JTAG).
GCC
GNU Compiler Collection
A compiler system produced by the GNU Project, which support various programming languages such as C and C++.
GPRAM
General purpose RAM. This memory area is used for the cache per default, but can be configured to be used as RAM.
HIB
Halt In Boot
A mechanism in CC13xx and CC26xx devices to ensure that the external emulator can take control of the device before it executes any application code.
IAR
Refers to IAR Systems’ IAR Embedded Workbench, which is an integrated development environment used for building and debugging embedded applications.
JTAG
IEEE standard 1149.1: Standard Test Access Port and Boundary Scan Architecture Test Access Port (TAP). This standard is known by the acronym JTAG (Joint Test Action Group).
MCU
Microcontroller Unit
A small computer on a single integrated circuit.
NVS
Non-Volatile Storage
Storage of data in non-volatile memory (NVM). NVM retains saved data during power cycles. In the context of CC13x2 and CC26x2 devices, NVM either refers to the internal flash or some external flash.
OAD
Over the Air Download
The process of performing a device firmware update over the air.
ROM
Read-only Memory
Type of non-volatile memory used in computers. Once data is written to ROM, the data cannot be removed and can only be read.
RTSC
Real Time Software Components
A toolset for creating reusable code, used by TI-RTOS. See RTSC and RTSC-Pedia.
SysConfig
System Configuration Tool
SysConfig is a graphical interface for configuring software projects. Configuration files, C source files and header files are generated based on the parameters configured in the SysConfig dashboard. See Get started with SysConfig.
TI-CGT
TI Code Generation Tools
Set of C/C++ Compilers and Assembly Language tools for many TI microcontrollers and processors. For more information, see TI Code Generation Tools.
VIMS
Versatile Instruction Memory System
A system control module that handles access to the device memory areas from the CPU and system bus. You can read more in the CC13x2 CC26x2 SimpleLink Wireless MCU Technical Reference Manual.
.bss
Block started by symbol. This memory section usually contains uninitialized variables including the task stacks.

TI-RTOS Terms and Acronyms

HWI
Hardware Interrupts
A TI-RTOS hardware interrupt.
Idle Task
A TI-RTOS default task that is executes when no other higher priority thread needs to run.
RCFG
TI-RTOS in ROM configuration table.
ROV
Runtime Object View
A TI-RTOS kernel plugin for CCS and IAR to view a target’s instrumentation data.
RTC
Real-Time Clock
An accurate computer clock which keeps track of the current time.
RTOS
Real Time Operating System
An operating system intended to serve applications with real-time requirements.
SWI
Software Interrupts
A TI-RTOS software interrupt.
TI-RTOS
Texas Instruments Real Time Operating System
An RTOS developed by TI for TI microcontrollers.
Zero-Latency Interrupts
An interrupt that will not be routed through the TI-RTOS kernel’s Hwi dispatcher. For more information, see the Hwi module documentation in the TI-RTOS Kernel API Reference .

Sensor Controller Terms and Acronyms

SC
Sensor Controller
A dedicated 16-bit CPU core on CC13xx and CC26xx devices, located in the auxiliary (AUX) power/clock domain. It can perform simple background tasks autonomously and independently of the System CPU and the MCU domain power states.
SCS
Sensor Controller Studio
A stand-alone IDE used to write, test and debug code for the Sensor Controller.

Coexistence Terms and Acronyms

PTA
Packet Traffic Arbitration
A process to determine the outcome of conflicting packets. A shared PTA control module determines which wireless device is currently able to transmit, enabling competing protocols to use the same frequency bands without conflicting.

Over-the-Air Download (OAD) Terms and Acronyms

BIM
Boot Image Manager
A bootloader that runs after the device’s ROM startup code. The BIM is responsible for analyzing the image header of all images and determining the most suitable image to run. Once the BIM has found the proper image, it will jump to it’s program entry.
CRC
Cyclic Redundancy Check
An error-detecting code used to check the integrity of blocks of data.
ECDSA
Elliptic Curve Digital Signature Algorithm
A variant of the Digital Signature Algorithm (DSA) which uses elliptic curve cryptography.
Factory Image
The factory image is a “golden” image that resides in external flash as a fail-safe mechanism.
HIB
Halt In Boot
A mechanism in CC26xx and CC13xx devices to ensure that the external emulator can take control of the device before it executes any application code.
OAD
Over-the-Air Download
The process of performing a device firmware update over the air.
OAD Target
The device whose firmware is being upgraded over the air. This is assumed to be a CC26xx or CC13xx device running the TI protocol-specific transport for OAD.
OAD Distributor
The device responsible for accepting an OAD enabled image from the compiler and transferring it over the air to the OAD Target.

NPI Terms and Acronyms

NPI
Network Processor Interface
Abstraction level above serial interface for sending / receiving data power management, and data parsing
MRDY
Master Ready
GPIO pin that indicates the state of the master
SRDY
Slave Ready
GPIO pin that indicates the state of the slave
AIND
Asynchronous Indication
An asynchronously received NPI message sent from the network processor to the host / application processor.
AREQ
Asynchronous Request
An asynchronously received NPI message sent from the host / application processor to the network processor.
FCS
Frame Check Sequence
An error-detecting code added to a frame
SOF
Start of Frame
A specific known byte specifying the beginning of a frame
SREQ
Synchronous Request
A blocking NPI request that expects an ((SRESP))
SRESP
Synchronous Response
A response to a ((SREQ))
UNPI
Unified ((NPI))
NPI used except for with HostTest
Network Processor
NP
A device that contains the wireless protocol stack as well as RF hardware. Stack functionality is exposed via a serial interface.
Application Processor
AP
An processor that implements the customer application as well the serial command interface to communicate with a network processor.

Localization Terms and Acronyms

AESCTRDRBG
Advanced Encryption Standard Counter Deterministic Random Bit Generator
An algorithm used to produce a sequence of bits from an initial value (seed). The sequence is pseudo-random. More information on the algorithm can be found in NIST SP 800-90A.
AoA
Angle of Arrival
CTE
Constant Tone Extension
FSK
Frequency Shift Keying
A communication scheme where information is transmitted through frequency deviations from a known carrier signal.
I/Q
In-phase and Quadrature components
Two amplitude-modulated sinusoids that are offset in phase by one-quarter cycle.
LQI
A measurement of the quality of a received packet. LQI measurements are performed on by the RF core by measuring the signal to noise ratio (SNR) of the desired signal to the in-band noise.
RSSI
Received Signal Strength Indication
RTLS
Real Time Localization System