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
- Link Budget
- The link budget is the ratio between the Tx power and the Rx sensitivity level.
- Link Layer
- 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
- Link Quality Indication
- 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