Glossary of Technical Terms

Glossary of Technical Terms
Glossary of Technical Terms
Issue 14
© Cambridge Silicon Radio Limited 2008 - 2013
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CS-119471-UGP14
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Document History
Date
Change Reason
1
07 APR 08
Original publication of this document
2
03 DEC 08
Update
3
06 APR 09
Update
4
26 NOV 09
Update
5
01 JUN 10
Update
6
18 OCT 10
Update
7
24 MAR 11
Update
8
29 JUN 11
Update
9
28 SEP 11
Update
10
30 MAR 12
Update
11
20 JUL 12
Update
12
09 OCT 12
Update
13
26 DEC 12
Update
14
08 NOV 11
Updated to current CSR branding
If you have any comments about this document, email [email protected] giving the
number, title and section with your feedback.
1
Introduction
This document defines the technical terms used by CSR.
Terms and Definitions
Term
Definition
2DRMS
Twice the Distance Root Mean Square
2G
2nd Generation of mobile communications technology
2WH
2-Way Handshake (e.g. WPA)
3G
3rd Generation of mobile communications technology
3GPP™
3rd Generation Partnership Project, a collaboration between groups of telecommunications
associations, to make a globally applicable 3rd Generation mobile phone system specification
3WH
3-Way Handshake (e.g. TCP)
4WH
4-Way Handshake (e.g. WPA, WPA2)
802®
A family of IEEE standards covering metropolitan area networks and local area networks
802.11™
WLAN specification defined by a working group within the IEEE
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Glossary of Technical Terms
Revision
Definition
8DPSK
8-phase Differential Phase Shift Keying
π/4 DQPSK
π/4 rotated Differential Quaternary Phase Shift Keying
µ-law
Audio companding standard (G.711)
A-GPS
Assisted Global Positioning System
A-law
Audio companding standard (G.711)
A/V
Audio/Video
A2DP
Advanced Audio Distribution Profile
AAC
Advanced Audio Coding
AAC-LC
Advanced Audio Coding Low Complexity
AAC-LTP
Advanced Audio Coding Long Term Prediction
AARP
AppleTalk Address Resolution Protocol
ABCSP
Variant of BCSP designed for embedded applications
ABM
Asynchronous Balanced Mode
ABP
Almanac Based Positioning
ABS
Anti-lock Braking System
AC
Access Category
AC
Admission Control
AC
Alternating Current
ACELP
Algebraic CELP
ACES
(Motorola) Automotive Communications and Electronic Systems
ACK
ACKnowledge
ACL
Application Control Layer
ACL
Asynchronous Connection-oriented
ACLR
Adjacent Channel Leakage Ratio
ACO
Authenticated Ciphering Offset
ACP
Adjacent Channel Power
ACQCLK
ACQuisition CLocK (RF analogue to digital sample clock)
ACR
Advanced Communications Riser
ACT
Asian Compression for TrueType
ActiveSync
A synchronisation program developed by Microsoft that allows a mobile device to be
synchronised with a desktop PC or a server
ad-hoc
In wireless communication, ad-hoc is discovering and communicating to other devices with peerto-peer communications without using central access points
ADC
Analogue to Digital Converter
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Definition
ADDTS
ADD Traffic Stream
ADL
Application Data Layer
ADPCM
Adaptive Differential Pulse Code Modulation (e.g. G.726)
AE
Auto(matic) Exposure
AEC
Acoustic Echo Cancellation
AEQ
Adaptive EQualiser
AES
Advanced Encryption Standard
AES
Audio Engineering Society
AF
Alternative Frequencies list
AF
Auto(matic) Focus
AFC
Automatic Frequency Control
AFE
Analogue Front-End
AFH
Adaptive Frequency Hopping
AG
Address Generator
AG
Audio Gateway
AGC
Automatic Gain Control
AGHFP
Audio Gateway Hands Free Profile
AGP
Auto Generated Payload
AGR
Automatic Gain Reduction
AHB
Advanced High-performance Bus
AIC
Advanced Interrupt Controller
AIFS
Arbitration InterFrame Space
AIO
Analogue Input/Output
AIO
Asynchronous Input/Output
ALC
Automatic Level Control
ALU
Arithmetic Logic Unit
AM
Amplitude Modulation
AM_ADDR
Active Member ADDRess
AMBA
Advanced Microprocessor Bus Architecture (ARM standard)
AMP
Alternate MAC/PHY
AMR
Adaptive Multi-Rate
AMR-WB
AMR Wide-Band (G.722.2)
AMUX
Analogue MUltipleXor
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Definition
AP
Access Point
AP
Access Preamble
APB
Advanced Peripheral Bus
APE
Audio file format from Monkey's Audio
API
Application Programming Interface
APM
Advanced Power Management
APME
Access Point Management Entity
APSD
Automatic Power-Save Delivery
ARIB
Association of Radio Industries and Businesses
AR_ADDR
Access Request Address
ARC4
Alleged Rivest Cipher 4
ARM
Advanced RISC Machines
ARP
Address Resolution Protocol
ARQ
Automatic Repeat reQuest
AS
Authentication Server
ASB
Anti-SideBand
ASCII
American Standard Code for Information Interchange
ASD
Application Specific Device
ASF
Advanced Streaming Format
ASIC
Application Specific Integrated Circuit
ASN.1
Abstract Syntax Notation One
ASSP
Application-Specific Standard Product
AT
ATtention, modem command
AT
ATtenuation
AT
Terminal control commands
ATA
Advanced Technology Attachment
ATE
Automatic Test Equipment
ATIM
Announcement Traffic Indication Message
ATM
Asynchronous Transfer Mode
ATP
Adaptive TricklePower
ATS
Abstract Test Suite
ATS
Application Test Suite
ATT
ATTribute protocol
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Definition
AuriStream
CSR proprietary ADPCM codec
AUX
Auxiliary
AVCTP
Audio/Video Control Transport Protocol
AVDTP
Audio/Video Distribution Transport Protocol
AVI
Audio Video Interleave
AVRCP
Audio/Video Remote Control Profile
AWB
Automatic White Balance
b
Bit
B
Byte
B/W
BandWidth
BAF
Benefield Anechoic Facility
balun
balanced/unbalanced interface or device that changes a balanced output to an unbalanced input
or vice versa
BAR
Base Address Register
BB
BaseBand
BBRAM
Battery Backed RAM
BC
BlueCore
BCCH
Broadcast Control CHannel
BCCMD
BlueCore CoMmanD
BCD
Binary Coded Decimal
BCH
Bose-Chaudhuri-Hochquenghem error correction code
BCHS
BlueCore Host Software
BCSP
BlueCore Serial Protocol
BD_ADDR
Bluetooth Device ADDRess
BDF
Bitstream Distribution Format
BDR
Basic Data Rate
BDR
Battery Divider Ratio
BE
Best-Effort
BE
Broadcast Ephemeris
BEC
Bit Error Concealment
BER
Basic Encoding Rules
BER
Bit Error Rate
BFI
Bad Frame Indicator
BGA
Ball Grid Array
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Glossary of Technical Terms
Term
Definition
BHT
Bluetooth Hardware Timer
BIOS
Basic Input Output System
BIP
Basic Imaging Profile
BIP
Broadcast Integrity Protocol
BIST
Built-In Self-Test
BIU
Bus Interface Unit (external memory interface)
BK
BacKground
BLE
Bluetooth low energy
Block Ack
Block Acknowledge
BlueCore®
Group term for CSR’s range of Bluetooth wireless technology ICs
BlueICE
BlueCore Input Connection Enhancement
BlueFlash
Software for programming BlueCore’s associated flash device
BlueLab®
CSR’s development toolset for building applications to run in the firmware’s VM
BlueSuite®
BlueCore family of software utilities for Bluetooth evaluation and development
BlueTest
A programme in the BlueSuite family that runs a BlueCore chip's self test routines
Bluetooth®
Set of technologies providing audio and data transfer over short-range radio connections
Bluetooth APM
Bluetooth Advanced Power Management
BLS
Black Light Scaling
BMC
Burst Mode Controller
BMM
Base Memory Managers
BNEP
Bluetooth Network Encapsulation Protocol
BOM
Bill Of Materials
BON
Bed Of Nails
bpp
bits per pixel
bps
Bits Per Second
BPSK
Binary Phase Shift Keying
BQA
Bluetooth Qualification Administrator
BQB
Bluetooth Qualification Body
BQP
Bluetooth Qualification Program
BQRB
Bluetooth Qualification Review Board
BQTF
Bluetooth Qualification Test Facility
BRC
Bit Rate Control
BSC
Base Station Controller
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Glossary of Technical Terms
Term
Definition
BSD
Berkeley Standard Distribution
BSP
Board Support Package
BSS
Base Station Subsystem
BSS
Basic Service Set
BSSID
BSS IDentification (network address)
BSSLAP
Base Station System Location services Assistance Protocol
BSSMAP
Base Station System Management Application Part
BT
Bluetooth
BTA
Bluetooth Technical Assessors
BTAB
Bluetooth Technical Advisory Board
BTCli
Bluetooth Command Line Interface
BTI WG
Bluetooth Test and Interoperability Working Group
BTL
Bridge Tied Load
BTS
Base Transceiver Station
C/A Code
Coarse/Acquisition Code
C/I
Carrier over Interferer
C/N
Carrier over Noise
C/No
Carrier to Noise Density
C99
ISO/IEC 9899:1999 (past version of C programming language)
CAB
CABinet, a file format used in a variety of Microsoft installation engines
CABAC
Context-based Adaptive Binary Arithmetic Code
CAC
Channel Access Code
CAE
Computer Aided Engineering
Capability
The functional behaviour of a DSPManager operator
CardBus
32-bit high performance bus mastering architecture for PC cards
CAS
Column Address Strobe
Casira™
Bluetooth development hardware from CSR
CATS
CSR Automated Test System. A general test execution framework for hardware and software
CB
Core Board
CC
Call Control
CCA
Clear Channel Assessment
CCCR
Card Common Control Registers
CCD
Charge-Coupled Device
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Definition
CCH
Control CHannel
CCIR
International Telecommunication Union - Radiocommunications sector (formerly CCIR)
CCK
Complementary Code Keying
CCM
Colour Conversion Manager
CCMP
CTR (Counter mode) with CBC-MAC (Cipher Block Chaining-Message Authentication Code)
Protocol
CCX
Cisco Compatible eXtensions
CDAC
Digital to Analogue Converter Capacitor
CD ROM
Compact Disk Read-Only Memory
CDL
Coexistence Decision Logic
CDL
Common Display List
CDMA
Code Division Multiple Access
CDS
Correlation Double Sampling
CDS-AFE
Correlation Double Sampling Analogue Front-End
CE
Chip Enable
CE
Compact Edition
CE
Consumer Electronics
CEC
Consumer Electronics Control
CELP
Code Excited Linear Prediction
CEP
Circular Error Probability
CFA
Colour Filter Array
CFC
Chlorofluorocarbon
CFF
Compact Font Format
CFI
Common Flash Interface
CFI
Compact Flash Interface
CFP
Contention-Free Period
CGEE
Client Generated Extended Ephemeris
CGI
Cell Global Identity
CGI
The Common Gateway Interface protocol is a standard for interfacing external scripts or
programs through an HTTP server.
CGU
Clock Generation Unit
CI
Capacitance Input
CI
Cell Identity
CI
Command Interpreter
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Definition
CID
Cell ID
CID
Character-IDentified (fonts)
CID
Connection ID
CIS
CardBus Information Structure
CIS
Contact Image Scanner
CKIP
Cisco Key Integrity Protocol
CL
ConnectionLess
CLI
Calling Line Identification
CLK
Clock
CLM
Client Location Manager
CMA
Continuous Memory Areas
CMD
CoMmanD
CMOS
Complementary Metal Oxide Semiconductor
CMP
Customizable (sic) Modular Processing tool
CMRR
Common Mode Rejection Ratio
CMY
(Colour modelling using) Cyan, Magenta and Yellow
CMYK
(Colour modelling using) Cyan, Magenta, Yellow and Key (black)
CNG
Comfort Noise Generation
COACH
Camera-On-A-CHip device, includes hardware and firmware
COACHWare
CSR's COACH firmware library executes on the COACH embedded CPU processor and
implements camera functionality
COACHWare API
The API layer through which the host or HCE communicates with COACHWare
COAL
CSR OS Abstraction Layer
COD
Class Of Device
codec
Coder decoder
COF
Ciphering OFfset
COFF
Common Object File Format
COM
A contraction of communications, used to describe the serial port on a PC
COMMS
Communication Layer
COMPASS
China's GNSS system
CP
Call Processor
CP
Clip Point
CP
Contention Period
CP
Control Plane
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Glossary of Technical Terms
Term
Definition
CPA
Control Plane Agent
CPD
Compliant Portion Declaration
Cpk
Process Capability Index, a factor in Statistical Process Control
CPSIP
ComPactSIP
CPU
Central Processing Unit
CQDDR
Channel Quality Driven Data Rate
CR
Carriage Return
CR
Concurrent Rendering
CRC
Cyclic Redundancy Check
CRDs
Colour Rendering Dictionaries
CS
Chip Select
CS-ACELP
Conjugate Structure ACELP (e.g. G.729)
CSA
Code Storage Area
CSA
Colour Space Array
CSB
Chip Select
CSI
Camera Serial Interface (MIPI)
CSL
CID (character-identified font) Support Library
CSL
Complementary Subsystem List
CSP
Chip Scale Package
CSP
Chip Support Package
CSPI
CSR Serial Peripheral Interface
CSR
Cambridge Silicon Radio
CTE
Coefficient of Thermal Expansion
CTP
Cordless Telephony Profile
CTR
Counter
CTS
Clear To Send
CUPS
Common UNIX Printing System
CVBS
Colour, Video, Blanking and Sync (i.e. composite video)
CVC
Clear Voice Capture
CVSD
Continuously Variable Slope Delta Modulation
CW
Carrier Wave
CW
Continuous Wave
CWI
Continuous Wave Interference
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Definition
DA
Destination Address
DAA
Data Access Arrangement
DAC
Device Access Code
DAC
Digital to Analogue Converter
DB
Dummy Bursts
dB-Hz
Units of C/No in the case 10log10(C/No) since C/No units are W/(W/Hz)
DBI
Display Bus Interface (MIPI)
dBm
Decibels relative to 1 mW
DC
Direct Current
DCB
Distributor Consolidated Billing
DCC
Delay Compensation Circuitry
DCD
Data Carrier Detect
DCF
Design rule for Camera File system (JEITA)
DCF
Distributed Coordination Function
DCI
Default Check Initialisation
DCS
Digital Communications System
DCXO
Digitally Compensated crystal Oscillator
DDC
Display Data Channel
DDR
Double Data Rate
DDS
Direct Digital Synthesis
DDT
Data Decoding Threshold
DE
Data Enable
DEVM
Differential Error Vector Magnitude
DFS
Dynamic Frequency Scaling
DFU
Device Firmware Upgrade
DGPS
Differential Global Positioning System
DH
Data-High Rate
DH
Diffie-Hellman
DHCP
Dynamic Host Configuration Protocol
DIAC
Dedicated Inquiry Access Code
DIB
Digital Isolation Buffer
DI
Device Id profile
DIFS
Distributed InterFrame Space
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Definition
DIL
Dual In-Line
DIMM
Dual In-line Memory Module
DIST
Digital Image STabilization
DivX
DivX products from DivX Inc., see www.divx.com
DL
Display List
DL
DownLink
DLCD
Digital Liquid Crystal Display
dll
dynamically linked library
DLL
Delay Locked Loop
DLL
Dynamically Linked Library
DLS
Direct Link Setup
DM
Data (Medium rate)
DM
Device Manager
DM
Diagnostic Manager
DMA
Dynamic Memory Allocation
DMA
Direct Memory Access
DMO
DirectX Media Object
DNL
Differential Non Linearity (ADC accuracy parameter)
DNR
DyNamic Range
DNS
Domain Name Service
DNS
Domain Name System
DoC
Declaration of Compliance
DoP
Dilution of Precision
DOS
Direct Operating System
DP
Data Pulsing
DP
Parallel processor in the Quatro DSP core of Quatro 45XX
DPCM
Differential PCM
DPD
Digital PreDistortion
dpi
dots per inch
DPI
Display Pixel Interface (MIPI)
DPIT
Designated Profile Interoperability Testers
DPOF
Digital Print Order Format
DQS
Distributed Queuing System
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Definition
DR
Dead Reckoning (inertial instrument based navigation)
DRAM
Dynamic Random Access Memory
DRM
Digital Rights Management
DSC
Digital Still Camera
DSCP
Differentiated Services Code Point
DSP
Digital Signal Processor (or Processing)
DSPManager
The BlueCore facility allowing hosts to configure data connections within the BlueCore device
DSSS
Direct Sequence Spread Spectrum
DTBA
Descriptor Table Base Address
DTCM
Data Tightly-Coupled Memory
DTD
Document Type Definition, a schema language for XML and SGML
DTE
Data Terminal Equipment
DTIM
Delivery Traffic Indication Message
DTM
Driver Test Manager
DTMF
Dual-Tone Multiple-Frequency
DTX
Discontinuous Transmission
DUN
Dial-Up Networking
DUT
Device Under Test
DV
Data Voice
DV
Digital Video
DVD
Digital Versatile Disc
DVFS
Dynamic Voltage and Frequency Scaling
DVI
Digital Video Interface
DVM
Digital Volt Meter
e.g.
exempli gratia, for example
E-Cell
Extended Cell
EAG
Embedded Audio Gateway
EAP
Extensible Authentication Protocol
EAPOL
Extensible Authentication Protocol Over LAN
EAQ
Enhanced Audio Quality
EARC
Edge-Aligned Ratio Counter
EBI
External Bus Interface
eBOM
electronic Bill of Materials
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Definition
EBU
European Broadcasting Union
EC
Echo Cancellation
ECC
Error Correcting Code
ECEF
Earth-Centred, Earth-Fixed
ECL
Exception Case List
ECLM
Embedded Client Locator Module
EDA
Electronic Design Automation
EDCA
Enhanced Distributed Channel Access
EDGE
Enhanced Data rates for GSM Evolution
EDR
Enhanced Data Rate
EE
Extended Ephemeris
EEPROM
Electrically Erasable Programmable Read Only Memory
EGNOS
European Geostationary Navigation Overlay Service
EGPRS
Enhanced GPRS
eGPS®
enhanced GPS
EHCC
Extended HCC
EHCI
Enhanced Host Controller Interface
EIA
Electronic Industries Alliance
EIFS
Extended InterFrame Space
EIR
Extended Inquiry Response
EIRP
Effective Isotropically Radiated Power
EIT
External InTerrupt
ELFR
Early Life Failure Rate
EMBR
Extended Master Boot Record
EMC
ElectroMagnetic Compatibility
EMI
ElectroMagnetic Interference
e-MMC
embedded-MultiMediaCard
EOC
End Of Conversion
EOF
End Of File
EPC
Enhanced Power Control
EPD
Energy Peak Detection
EPP
Enhanced Parallel Port
EPR
Encryption Pause / Resume
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Definition
EPROM
Erasable Programmable Read Only Memory
EQ
EQualiser
ERP
Extended Rate PHY
eSCO
extended SCO
ESD
Electrostatic Discharge
ESR
Equivalent Series Resistance
ESS
Extended Service Set (infrastructure network)
ESSID
Extended Service Set IDentification
ESTB
EGNOS System Test Bed
ETB
Embedded Trace Buffer
etc
et cetera, and the rest, and so forth
ETM
Embedded Trace Module
ETS
Extended Training Sequence
ETSI
European Telecommunications Standards Institute
EVB
EValuation Board
EVK
EValuation Kit
EVM
Error Vector Magnitude
EVM
EValuation Module
EXIF
EXchange Image Format
FAE
Field Application Engineer
FastPipe
A reliable data transfer protocol between the host and the BlueCore device
FAT
File Allocation Table
FBGA
Fine-pitch Ball Grid Array
FBR
Function Basic information Registers
FCB
Frequency Correction Beacon
FCC
Federal Communications Commission
FCD
Flexible Clock Divider
FCL
Flow Control Layer
FCOFF
Flow Controller OFF
FCT
Flow Control Token
FCU
Focus Control Unit
FD
Face Definition
FDD
Frequency Division Duplex
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Definition
FDMA
Frequency Division Multiple Access
FEC
Forward Error Correction
FEM
Front End Module
FET
Field Effect Transistor
FFB
Full Frame Buffer
FFT
Fast Fourier Transform
FH
Frequency Hopping
FHS
Frequency Hop Synchronisation
FHSS
Frequency Hop Spread Spectrum
FIFO
First-In First-Out (queue)
FIPS
Federal Information Processing Standards
FIQ
Fast Interrupt reQuest
FIR
Finite Impulse Response (filter)
FLAC
Free Lossless Audio Codec
FlashPix
FlashPix File format for bitmapped-graphics with .FPX extension, which maintains an image in
several resolutions
FM
Frequency Modulation
FMC
Fixed-Mobile Convergence
FP
Frame Pointer
FP
Full Power
FPGA
Field Programmable Gate Array
fps
frames per second
FPU
Floating-Point Unit
FS
FastStream
FS
File System
FSAA
Full Screen Anti-Aliasing
FSI
File System Interface
FSK
Frequency Shift Keying
FSM
Finite State Machine
FT2
FreeType 2
FTA
Fine Time Aiding
FTP
File Transfer Profile
FTP
File Transfer Protocol
FTS
Functional Test Suite
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Glossary of Technical Terms
Term
Definition
FW
FirmWare
g
Acceleration equal to gravity at mean sea level (~9.8 m/s2)
G.722
An ITU-T standard wideband speech codec operating at 48, 56 and 64 kbps
Galileo
Europe's GNSS system
GAP
Generic Access Profile
GATT
Generic ATTribute protocol
GBC
GPS Baseband Control
GCC
GNU C Compiler
GCF
Global Certification Forum
GCI
General Circuit Interface
GDI
Graphic Device Interface
GDOP
Geometric Dilution of Precision
GFSK
Gaussian Frequency Shift Keying
GGA
NMEA Term: Global Positioning System Fix Data
GIAC
General Inquiry Access Code
GKI
Generic Kernel Interface
GLL
Generic Location Layer
GLONASS
Global Orbiting Navigational Satellite System
GM
Group Management
GMC
Global Motion Compensation
GMK
Group Master Key
GMT
Greenwich Mean Time
GN
Group ad-hoc Network (Bluetooth PAN)
GND
GrouND
GNSS
Global Navigation Satellite System
GOEP
Generic Object Exchange Profile
GPIB
General Purpose Interface Bus
GPIO
General Purpose Input/Output
GPRS
General Packet Radio Service
GPS
Global Positioning System
GPSK
Gaussian Phase Shift Keying
GPSMC
GPS Monitor Control
GSA
NMEA string: GNSS DOP and Active Satellites
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Definition
GSIU
General Serial Interface Unit
GSM
Global System for Mobile communications
GSMA
GSM Association
GSV
NMEA string: GNSS Satellites in View
GTE
GPS Timing Engine
GTK
Graphical Tool Kit
GTK
Group Temporal Key
GUI
Graphical User Interface
GUID
Globally Unique IDentifier
GW
GateWay
H4+
Nokia extended H4 protocol
H4DS
H4 Deep Sleep
H/W
HardWare
HA
Host Application
HAN
Home Area Network
HAST
Highly Accelerated Stress Test
HBM
Human Body Model
HC
Host Controller
HC
Howling Control
HCC
Hyperbolic Congruence Code
HCE
Host COACH Embedded, i.e. embedded host functionality in the COACH that resides in the
customer’s software layer. HCE interfaces COACHWare via dedicated API commands.
HCI
Host Controller Interface
HD
High Definition
HD
Host Driver
HD Photo
Windows Media Photo
HDLC
High-Level Data Link
HDMI
High-Definition Multimedia Interface
HDOP
Horizontal Dilution Of Precision
HDR
High Density Range
HDT
High-side Dead Time
HDTV
High Definition TeleVision
HE-AAC
High-Efficiency Advanced Audio Coding
HEC
Header Error Check Correction
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Glossary of Technical Terms
Term
Definition
HFP
Hands-Free Profile
HFK
Hands-Free Kit. Voice-processing configuration used in automotive and other hands-free modes
of operation.
HI
Header ID
HID
Human Interface Device
HMI
Human Machine Interface
Host
A separate processor controlling a BlueCore device over HCI
HP
Hewlett-Packard
HPD
Hot Plug Detect
HP IPS
Hewlett-Packard International Print Solution
HQ
Host Query
HR/DSSS
High Rate Direct Sequence Spread Spectrum
HRFWG
Home RF Working Group
HS
HeadSet
HS
High Speed
HSDPA
High-Speed Downlink Packet Access
HSP
HeadSet Profile
HSP
High Speed Port
HSPA
HSDPA and HSUPA
HSUPA
High Speed Uplink Packet Access
HT
Higher Throughput
HTML
HyperText Markup Language
HTOL
High Temperature Operating Life
HTTP
HyperText Transfer Protocol
HV
Header Value
HV
High (quality) Voice
HW
HardWare
HWTL
HardWare Tracking Loop
I
Input
I²C
Inter-Integrated Circuit Interface
I²S
Inter-Integrated Circuit Sound
IIS
Internet Information Server
i.e.
Id est, that is
I/O
Input/Output
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Definition
IAC
Inquiry Access Code
IBSS
Independent BSS (ad-hoc network)
IC
Integrated Circuit
ICC
International Color Consortium
ICD
Interface Control Document
ICE
In-Circuit Emulator
ICE
Interactive Connectivity Establishment
ICFT
Initial Carrier Frequency Tolerance
ICP
InterCom Profile
ICS
Implementation Conformance Statement
ICU
Interrupt Control Unit
ID
IDentifier
IDC
Insulation Displacement Connector
IDE
Integrated Development Environment
IDMA
Internal Direct Memory Access
IE
Information Element
IEC
International Electrotechnical Commission
IEEE
Institute of Electronic and Electrical Engineers
IETF
Internet Engineering Task Force
IF
Intermediate Frequency
IFO
Intra-Frame Offset
IIR
Infinite Impulse Response (filter)
iLBC
internet (sic) Low Bit-rate Codec
IMES
Indoor MEssaging System
IMG
IMaGe subsystem
IMT
International Mobile Telecommunications
IMU
Inertial Measurement Unit
iNAND
integrated NAND
INF
Setup INformation File, often used for Windows device drivers
Inferno-NL
Inferno running on a Non-Linux operating system
INL
Integral Non-Linearity (ADC accuracy parameter)
IOC
Interrupt On Complete
IOCTL
Input/OutputConTroL (Request)
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Term
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Definition
IP
Intellectual Property
IP
Internet Protocol
IP2
Inter-modulation Product 2
IPC
See www.ipc.org
Iperf
Network performance testing tool
IPM
Intelligent Power Management
IPP
Internet Printing Protocol
IPR
Intellectual Property Rights
IPS FIVE
CSR's IPS PCL interpreter
IPS PDFt
CSR's IPS PDF interpreter
IPS PS3
CSR's IPS PostScript interpreter
IPS XLC
CSR's IPS PCL 6 interpreter
IPS XPS
CSR's IPS XPS interpreter
IPv4
Internet Protocol version 4
IPv6
Internet Protocol version 6
IPX
Internet Packet Exchange
IQ
In-Phase and Quadrature
IQ Modulation
In-Phase and Quadrature Modulation
IrDA
Infrared Data Association
IRPA
International Radiation Protection Association
IRP
I/O Request Packet
IRQ
Interrupt ReQuest
ISDN
Integrated Services Digital Network
ISM
Industrial, Scientific and Medical
ISO
International Organization for Standardization (sic)
ISP
Internet Service Provider
ISR
Interrupt Service Routine
IST
Interrupt Service Thread
ITC
Interrupt Threshold Control
ITCM
Instruction Tightly-Coupled Memory
ITG
Internal Timing Generator
ITU
International Telecommunication Union
ITU-T
International Telecommunication Union Standardization Sector (sic)
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Term
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Definition
IUT
Implementation Under Test
IVT
Information Validation and Testing Corporation
IXIT
Implementation eXtra Information for Testing
J-FET
Junction Field Effect Transistor
JEDEC
Joint Electron Device Engineering Council (now the JEDEC Solid State Technology Association)
JPEG
Joint Photographic Experts Group
JRE
Java Runtime Environment
JSR
Java Specification Request
JTAG
Joint Test Access Group
JTDI
JTAG Data In
JTDO
JTAG Data Out
KA
Keep-Alive block containing non-volatile circuits
Kalimba
An open platform DSP co-processor, enabling support of enhanced audio applications, such as
echo and noise suppression and file compression / decompression
Kb
Kilobit
KB
Kilobyte
Kbps
Kilobits per second
KITL
Kernel Independent Transport Layer
L
Left
L2CAP
Logical Link Control and Adaptation Protocol
LAC
Location Area Code
LAN
Local Area Network
LANGID
Language Identifiers
LAP
LAN Access Point
LAP
Lower Address Part
LBIPM
Low Battery Intelligent Power Management
LBS
Location-Based Service
LC
An inductor (L) and capacitor (C) network
LC
Link Controller
LCD
Liquid-Crystal Display
LCDS
Low Current Differential Signal
LCP
Link Control Protocol
LCS
Location Services
LDO
Low (voltage) Drop-Out
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Glossary of Technical Terms
Term
Definition
LDT
Low-side Dead Time
LED
Light-Emitting Diode
LF
Line Feed
LF
Loop Filter
LFBGA
Low-profile Fine-pitch Ball Grid Array
LFSR
Linear Feedback Shift Register
LGA
Land Grid Array
LHCP
Left Hand Circularly Polarised
LIAC
Limited Inquiry Access Code
LIFO
Last-In First-Out (stack)
LJ
Left-Justified
LLA
Latitude, Longitude, Altitude
LLC
Logical Link Control
LM
Link Manager
LMC
Lens Motor Control
LMP
Link Manager Protocol
LMU
Location Management Unit
LMU
Location Measuring Units
LNA
Low Noise Amplifier
LO
Local Oscillator
LP
Lower Protocol
LP
Low Power
LPC
Lost Packet Concealment
LPC
Low Pin Count
LPDDR
Low Power Double Data Rate
LPF
Low Pass Filter
LPL
Link Pointer Low
LPL
Location Protocol Library
LPM
Link Power Management
LPO
Low-Power Oscillator
LPT
Line Printer Terminal
LQFP
Low-profile Quad Flat Pack
LRP
Latency / Robustness Preference
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Term
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Definition
LS
Least Significant
LSB
Least Significant Bit (or Byte)
LSBF
Least-Significant Bit First
LSD
Line Side Device
L-SIG
Legacy SIGnal
LSL
Logical Shift Left
LSM
Location Session Manager
LSTO
Link Supervision Time-Out event
LUT
Look-Up Table
MAC
Medium Access Control
MAC
Multiplier and ACcumulator
MAP
Message Access Profile
MAP
Multimedia Application Processor
MAPX
CSR's audio processing IC family
MAPI
Messaging Application Procedure Interface
MAS
Main Application Server
MB
Main Board
Mb
Megabit
MB
MegaByte
MB-OFDM
MultiBand Orthogonal Frequency Division Multiplexing
Mbps
Megabits per second
MBps
MegaBytes per second
MCAP
Multi-Channel Adaptation Protocol
MCC
Mobile Country Code
MCD
Misalignment Change Detection
MCM
Multi-Chip Module
MCS
Modulation and Coding Scheme
MCU
MicroController Unit
MCU
Modem Controller Unit
MD5
Message Digest algorithm 5
mDDR
mobile DDR
MDP
Modem Data Pump
MEIF
Measurement Engine InterFace
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Definition
meloD
meloD AUDIO PROCESSING is CSR's suite of audio algorithms
MEMS
Micro Electro Mechanical System
MES
RSA BSAFE Micro Edition Suite 3.2.1
MFB
Multi-Function Button
MFO
Multicast Fan-Out
MFP
Multi-Function Peripheral
MFP
Multi-Function Product
MIB
Management Information Base
MID
Message ID
MID
Mobile Internet Device
MIDI
Musical Instrument Digital Interface
MIH
Memory Intent Hints
MIL
Mirrorless Interchangeable Lens
MIME
Multipurpose Internet Mail Extension
MIMO
Multiple-In Multiple-Out
MIPI
MIPI Alliance, see www.mipi.org/
MIPS
Million Instructions Per Second
MIPS
MIPS Technologies Inc, see www.mips.com
MISO
Master In Slave Out
MITM
Man In The Middle
MJPEG
Motion JPEG (Joint Photographic Experts Group)
MKV
MatrosKa Video
MLC
MultiLayer Ceramic
MLC
Multi-Level Cell
MLM
Multi-Layer Mask
MLME
MAC Layer Management Entity
MM
Multi-Master
MMAC
Multimedia Mobile Access Communication
MMC
MultiMediaCard
MMCX
Micro-Miniature CoaXial
MMI
Man-Machine Interface
MMPDU
MAC Management Protocol Data Unit
MMU
Memory Management Unit
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Definition
MNC
Mobile Network Code
modem
modulator demodulator
MO-LR
Mobile Originated Location Request
MOS
Mean Opinion Score
MOS
Metal Oxide Semiconductor
MOSI
Master Out Slave In
MOST
Media Oriented Systems Transport (databus)
MOST
Mobile Open Systems Technology
MOV
Apple QuickTime MOVie file format
MP
MegaPixel(s)
MP
Micro Power
MP3
MPEG-1 audio layer 3
MP4
MPEG-4 (Moving Picture Experts Group 4) audio and video compression standard
MPDU
MAC Protocol Data Unit
MPM
Micro Power Mode
MPEG
Moving Picture Experts Group
MPST
Memory Parameters Scan Tool
MPU
MicroProcessor Unit
MRT
Multiple on-chip Render Targets
MS
Mobile Station
MS
Most Significant
MSA
Mobile-Station Assisted
MSAA
Multi-Sample Anti-Aliasing
MSAS
Multi-functional Satellite Augmentation System (Japan)
MSB
Mobile-Station Based
MSB
Most Significant Bit (or Byte)
mSBC
modified Sub-Band Coding
MSBF
Most Significant Bit First
MSC
Message Sequence Chart
MSC
Mobile Switching Center
MSDU
MAC Service Data Unit
MSK
NMEA string: MSK Receiver Interface
MSL
Mean Sea Level
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Glossary of Technical Terms
Term
Definition
MSL
Moisture Sensitivity Level
MSM
Mini-State Machine
MSPI
Master SPI
Msps
Megasamples per second
MSS
NMEA string: MSK Receiver Signal
MT-LR
Mobile Terminated Location Request
MTBA
Multiple Traffic ID Block Acknowledgement
MTP
Media Transfer Protocol
MTU
Maximum Transmission Unit
MusiCore
Group term for CSR's range of single-chip audio and Bluetooth wireless technology ICs
Mutex
Mutual exclusion (object)
MUX
MUltipleXer
MXDW
Microsoft XPS Document Writer
N/A
Not Applicable
NAK
Negative AcKnowledge
NAND
Not AND (electronic logic gate)
NAP
Network Access Point (Bluetooth PAN)
NAP
Non-significant Address Part
NAT
Network Address Translation
NAV
Network Allocation Vector
NB
Narrow Band
NB
Normal Burst
NBC
Number of BroadCasts
NBNS
NetBIOS Naming Service
NC
Not Connect
NCO
Numerically Controlled Oscillator
NCP
Number of Completed Packets
NDA
Non-Disclosure Agreement
NDIS
Network Driver Interface Specification
NDVC
Noise Dependent Volume Control
NetBIOS
Network Basic Input/Output System
NetBIOS-DS
NetBIOS Datagram Service
NF
Noise Floor
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Definition
NF
Not Fitted
NFC
Near Field Communication
NFC-WI
NFC-Wired Interface
NFPBF
Non-Flushable Packet Boundary Flag
NI
Network Initiated
NiCd
Nickel Cadmium
NiMH
Nickel Metal Hydride
NLP
Non-Linear Processing
NMEA
National Marine Electronics Association
NOP
No OPeration
NOR
Not OR (electronic logic gate)
NR
Noise Reduction
NRE
Non-Recurring Expense
NS
Noise Suppression
NSC
Non-Supported Command
NSMD
Non-Solder Mask Defined
NT
Network Terminal
NTC
Negative Temperature Coefficient thermistor temperature monitoring circuit
NTSC
National Television System Committee
NVM
Non-Volatile Memory
O
Output
O.C.
Open Circuit
OAL
OEM Adaptation Layer
OBEX
OBject EXchange Protocol
OCD
Optional Content Dictionary
OCF
Opcode Command Field
OCF
Original Composite Fonts
OCMD
Optional Content Membership Dictionary
ODM
Original Design Manufacturer
ODO
ODOmeter
OEM
Original End Manufacturer
OFDM
Orthogonal Frequency Division Multiplexing
OFFT
Overlap FFT
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Definition
OGF
Opcode Group Field
OHCI
Open Host Controller Interface
OID
Object IDentifier
OM
Options Manager
OMF
Object Module Format
OOB
Out-Of-Band
OOBE
Out Of the Box Experience
Op
Operational
OpenGL
Open Graphics Library
OpenGL ES
Open Graphics Library for Embedded Systems
OpenVG
Open Vector Graphics
Operator
An active component of DSPManager that processes data streams
OPP
Object Push Protocol profile
OS
Operating System
OSD
On-Screen Display
OSI
Open Systems Interconnect
OSKA
Operating System Kernel Abstraction
OSP
One Socket Protocol
OSP
Organic Solderability Preservative
OTA
Over-The-Air
OTD
Observed Time Differences
OTG
USB On-The-Go
OTP
One-Time Programmable
OUI
Organizationally (sic) Unique Identifier
P-Code
Precise Code
PA
Power Amplifier
PABX
Private Automatic Branch Exchange
PAL
Phase Alternating Line (TV)
PAL
Platform Abstraction Layer
PAN
Personal Area Network
PANU
PAN User (Bluetooth PAN)
PAPR
Peak to Average Power Reduction
Pb
The chemical symbol for lead
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Definition
PBAP
PhoneBook Access Profile
PBB
(PolyBrominated Bi-Phenyl)
PBC
Push Button Configuration
PBCC
Packet Binary Convolutional Code
PBDE
PolyBrominated Diphenyl Ether
PBF
Packet Boundary Flags
PBI
Peripheral Bus Interface
PC
Personal Computer
PC
Program Counter
PCB
Printed Circuit Board
PCF
Point Coordination Function
PCF
Portable Compiled Font
PCI
Peripheral Component Interconnect
PCIe
PCI express
PCM
Pulse Code Modulation
PCMCIA
Personal Computer Memory Card International Association
PCO
Phased Coexistence Operation
PCS
Personal Communications System
PD
Pull-down
PDA
Personal Digital Assistant
PDF
Portable Document Format
PDI
Page Description Interface
PDL
Page Description Language
PDL
Paired Device List
PDOP
Position Dilution Of Precision
PDR
Pedestrian Dead Reckoning
PDU
Protocol Data Unit (packet or message)
PEL
Picture ELement (i.e. pixel)
PEL
Position Estimator Layer
PER
Packet Error Rate
Persistent Store
Store of configuration values in non-volatile memory
PESQ
Perceptual Evaluation of Speech Quality
PFM
Pulse Frequency Modulation
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Definition
PFRs
Portable Font Resources
PGM
ProGraM
PHB
Per-Hop Behavior (sic)
PHY
PHYsical (layer)
PI
Programmable Input
PICS
Profile Implementation Confirmation Statement
PICS
Protocol Implementation Confirmation Statement
PictBridge
Direct printing standard from the Camera and Imaging Products Association (CIPA)
PID
Product ID used to identify USB devices
PIFA
Planar Inverted ‘F’ Antenna
PIM
Personal Information Manager
PIN
Personal Identification Number
PIP
Picture-In-Picture
PIO
Parallel Input/Output
PIO
Programmable Input/Output, also known as general purpose I/O
PIXIT
Protocol Implementation eXtra Information for Testing
PJL
Printer Job Language
pk-pk
peak-to-peak
PLC
Packet Loss Concealment
plc
public limited company
PLCP
Physical Layer Convergence Protocol
PLL
Phase Lock Loop
PLR
Packet Loss Rate
Plug n Go®
CSR IC with RF matching components (including balun) within the package
PM
Physical Memory
PMC
Power Management Capabilities
PMCSR
Power Management Control/Status Register
PMD
Physical Medium Dependent
PMIC
Power Management Integrated Circuit
PMK
Pairwise Master Key
PMKID
Pairwise Master Key IDentifier
PMKSA
Pairwise Master Key Security Association
PMP
Portable Media Player
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Definition
PMU
Power Management Unit
PND
Personal Navigation Device
PNS
Primary Noise Shaper
PO
Programmable Output
POP
Persistent Organic Pollutants
POR
Power On Reset
POSIX
Portable Operating System Interface
POTS
Plain Old Telephone Service
PP
Port Power
ppb
parts per billion
PPD
PostScript Printer Description
Ppk
Process Performance Index, a factor in Statistical Process Control
ppm
parts per million
PPP
Point to Point Protocol
PPS
Precise Positioning Service
PPS
Port Power Switching
PRBS
Pseudo Random Bit Sequence
PRD
Program Reference Document
Pre-PIT
Preliminary Profile Interoperability Testers
PRN
Pseudo-Random Noise
PRP
Power Management Register
PS
Parametric Stereo
PS
Persistent Store
PS
Power Saving
PS
Programme Service name
PS Key
Persistent Store Key
PsCli
Persistent Store Command line interface
PSD
Power Spectral Density
PSK
Phase Shift Keying
PSK
Pre-Shared Key
PSM
Protocol Service Multiplexer
PSMP
Power Save Multi-Poll
PSP
PlayStation Portable
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Definition
PSPCli
PlayStation Portable Command line interface
PSQM
Perceptual Speech Quality Measure
PSRR
Power Supply Rejection Ratio
PSTN
Public Switched Telephone Network (POTS)
PSTool
BlueSuite utility
PSU
Power Supply Unit
PTA
Packet Traffic Arbitrator
PTAT
Proportional to Absolute Temperature
PTC
Port Test Control
PTCRB
PCS-Type Certification Review Board
PTF
Push-To-Fix
PTH
Plated-Through Hole
PTK
Pairwise Temporal Key
PTP
Picture Transfer Protocol
PTY
Programme TYpe
PU
Pull-Up
pUniTest
Name of device control library (DLL) for UniFi production testing
PVC
Poly Vinyl Chloride
PVT
Position, Velocity and Time
PVT
Process, Voltage and Temperature
PWM
Pulse Width Modulation
PWR
PoWeR
PWRC
PoWeR Control
PWRDN
PoWeR-DowN
QAM
Quadrature Amplitude Modulation
QBSS
Quality of Service BSS
QFN
Quad-Flat No-lead
QH
Queue Head
qMan
queue Manager
QoP
Quality of Position
QoS
Quality of Service
QPL
Qualified Products List
QPLN
Qualified Product Listing Notice
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Term
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Definition
QPSK
Quadrature Phase Shift Keying
QPWM
Quanta Pulse Width Modulator
QZSS
Quasi-Zenith Satellite System
R
Right
R3T
Reduced Raster Resolution Technology
RADIUS
Remote Authentication Dial-In User Service
RAM
Random Access Memory
RAT
Radio Access Technology
RBDS
Radio Broadcast Data System
RC
A Resistor and Capacitor network
RC4
Rivest Cipher 4
RCA
Radio Corporation of America, normally used to refer to a RCA connector (also known as phono
connector or Cinch connector)
RCLK
Reference CLocK
RCPI
Received Channel Power Indicator
RCS
Revision Control System
RDS
Radio Data System
REB
REad enaBle
RF
Radio Frequency
RFA
RF Amplifier
RFCli
RFCOMM Command line interface
RFCOMM
Radio Frequency COMMunication. Protocol layer providing serial port emulation over L2CAP
RFS
Receive Sync Signal
RGB
Red Green Blue
RH
Relative Humidity
RHCP
Right Hand Circularly Polarised
RIFF
Resource Interchange File Format
RIFS
Reduced Inter-Frame Spacing
RIL
Radio Interface Library
RIR
Reduced Image Resolution
RISC
Reduced Instruction Set Computer
RJ
Right-Justified
RLP
Roaming Location Protocol
RM
Rendering Manager
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Glossary of Technical Terms
Term
Definition
RMC
Recommended Minimum Specific GNSS Data
rms
root mean squared
RMVB
RealMedia Variable Bitrate
RNDIS
Remote Network Driver Interface Specification
RO
Read Only
RoHS
Restriction of Hazardous Substances in Electrical and Electronic Equipment Directive (2002/95/
EC)
ROPs
Raster OPerationS
ROM
Read Only Memory
RPC
Remote Procedure Call
RPM
RPM Package Manager
RR
Radio Resource
RRC
Radio Resource Control
RRLP
Radio Resource Location Services Protocol
RS-232
Recommended Standard-232, a TIA/EIA standard for serial transmission between computers
and peripheral devices (modem, mouse, etc.)
RSC
Receive Sequence Counter
RSC
Resource Sharing Control module
RSN
Robust Security Network
RSNA
Robust Security Network Association
RSSI
Received Signal Strength Indication
RST
ReSeT
RT
Radio Text
RTC
Real-Time Clock
RTCIO
Real-Time Clock Input Output
RTCM
Radio Technical Commission for Maritime Services
RTCP
Real-Time Control Protocol
RTE
Run-Time Environment
RTOS
Real-Time Operating System
RTP
Real-time Transport Protocol
RTS
Request To Send
RUT
Receiver Under Test
RVDS
RealView Developer Suite
RW
Read Write
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Glossary of Technical Terms
Term
Definition
RX
Receive or Receiver
S-parameters
Scattering parameters. A way to measure a chip's characteristics when a fixed signal is applied.
S/W
SoftWare
SA
Selective Availability
SAP
Service Access Point
SAPI
Service Access Point Identifier
SAR
Specific Absorption Rate
SAR
Successive Approximation Register (ADC)
SATA
Serial Advanced Technology Attachment
SAW
Surface Acoustic Wave
SB-ADPCM
Sub-Band ADPCM (e.g. G.722)
SBAS
Satellite Based Augmentation System
SBC
Session Border Controller
SBC
Sub-Band Coding
SBR
Spectral Band Replication
SBS
Suspend/resume
SBU
SiRF Bridge Unit
SBZ
Should Be Zero
SCB
SChmitt-trigger Bidirectional signal
SCH
Synchronisation CHannel
SCI
SChmitt-trigger Input signal
SCL
Serial Clock Line
SCM
Single-Chip Modem
SCMS
Serial Copy Management System (SCMS-T). A content protection scheme for secure transport
and use of compressed digital music
SCO
Synchronous Connection-Oriented
SCSI
SDIO Continuous SPI Interrupt
SCSI
Small Computer System Interface
SCU
Snoop Control Unit
SD
Storage Device
SD
Secure Digital
SDA
Serial DAta (line)
SDAP
Service Discovery Application Profile
SDC
SDIO Direct Commands
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Definition
SDC
Service Discovery Client
SDD
Service Discovery DataBase
SDDCRS
Sigma-Delta Downsampling and Conversion ReSampler
SDHC
Secure Digital High Capacity
SDIO
Secure Digital Input/Output
SDK
Software Development Kit
SDL
Specification and Description Language
SDMMC
Storage Device MultiMedia Card
SDP
Service Discovery Protocol; element of Bluetooth
SDR
Single Data Rate
SDRAM
Synchronous Dynamic Random Access Memory
SDS
Service Discovery Server
SDXC
Secure Digital eXtended Capacity
SE
Secure Elements
SEID
Stream End-point IDentifier
SEN
System-Equivalent Noise
SEP
Spherical Error Probability
SEP
Stream End Point
SF
Special Function
SFCU
Synchronous Flash Control Unit
SFFS
Super-Fast Frame Sync
SFNT
Soft FoNT
SGEE
Server Generated Extended Ephemeris
SHA
Secure Hash Algorithm
SI
International System of Units
sic
Latin, meaning thus or so used in brackets after a word or phrase to indicate that it is quoted
accurately, even if it appears to be a mistake (or contradicts CSR's style guidelines)
SID
Sub ID
SIFS
Short Inter-Frame Space
SIG
(Bluetooth) Special Interest Group
SiGe
Silicon-Germanium
SIMD
Single Instruction Multiple Data
Sink
A component of BlueCore devices that consumes data
SIP
Serial Interface Protocol
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Definition
SIP
Session Initiation Protocol
SLC
Service Level Connection
SLC
Single-Level Cell
SLIMbus
Serial Low-power Inter-chip Media bus
SLIP
Serial Link Internet Protocol
SLC
Single-Level Cell
SLM
SiRF Location Manager
SLS
SiRFLoc Server
SMA
Sub Miniature version A connector
SMB
SDIO Multi-Block
SMD
Solder Mask Defined
SMD
Surface Mounted Device
SME
Station Management Entity
SME
Subject Matter Expert
SMLC
Serving Mobile Location Centre
SMP
Security Manager Protocol
SMP
Symmetric Multi-Processor
SMPS
Spatial Multiplexing Power Save
SMPS
Switch-Mode Power Supply
SMS
Short Message Service
SMS4
A propriatary block cipher used in WAPI
SMSRX
Short Messaging Service Receive
SMSTX
Short Messaging Service Transmit
SMT
Surface Mounted Technology
SNAP
Sub-Network Access Protocol
SNC
Stereo Noise Control
SNK
SiNK
SNMP
Simple Network Management Protocol
SNR
Signal-to-Noise Ratio
SNS
Secondary Noise Shaper
SoC
System On-Chip
SOF
Start Of (micro) Frame
SOLT
Short-Open-Load-Through. A calibration technique.
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Definition
Source
A component of BlueCore devices that generates data
SP
Service Period
SP
Stack Pointer
SPC
Statistical Process Control
SPDIF
Sony/Philips Digital InterFace (also IEC 958 type II, part of IEC-60958). An interface designed
to transfer stereo digital audio signals between various devices and stereo components with
minimal loss.
SPI
Serial Peripheral Interface
SPI
System Programming Interface
SPL
Sound Pressure Level
SPP
Serial Port Profile
SPS
Samples Per Second, sometimes "SPs"
SPS
Standard Positioning Service
SPU
Serial Port Unit
SPXO
Simple Packaged Crystal Oscillator
SQIF
Serial Quad I/O Flash (interface)
SQL
Structured Query Language, an interactive and programming language for querying databases
and modifying their data.
SRAM
Static Random Access Memory
SRC
SouRCe
SRW
SDIO Read Wait
SS
Supplementary Services
SSB
Single Side-Band
SSB
SiRF Standard Binary
SSD
System Side Device
SSI
Signal Strength Indication
SSID
Service Set Identifier (network name)
SSL
Secure Sockets Layer
SSM
System State Machine
SSP
Secure Simple Pairing
SSP
Synchronous Serial Port
SSR
Sniff Sub-Rating
ST
Single Task
STA
STAtion (includes AP in IEEE 802.11, but not in Wi-Fi)
STBC
Space Time Block Coding
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Glossary of Technical Terms
Term
Definition
STUN
Simple Traversal of UDP through NATs
SUPL
Secure User Plane Location
SUT
System Under Test
SV
Space Vehicle
SW
SoftWare
SWAP
Shared Wireless Access Protocol
SWP
Single-Wire Protocol
SWTL
SoftWare Tracking Loop
TA
Terminal Adaptor
TA
Timing Advance
TA
Traffic Announcement identification
TAE
Terminal Adaptor Equipment
TBC
To Be Confirmed
TBD
To Be Defined
TBF
Time Between Fixes
TBTT
Target Beacon Transmission Time
TC
Test Case
TC
Test Control
TCH
Traffic CHannel
TCI
Test Control Interface
Tcl
The Tool command language, a scripting language
TCLAS
Traffic CLASsification
TCM
Tightly-Coupled Memory
TCP
Transmission Control Protocol
TCP/IP
Transport Control Protocol/Internet Protocol
TCRL
Test Case Reference List
TCS
Telephony Control protocol Specification
TCS-BIN
Telephony Control protocol Specification BINary
TCVCXO
Temperature Controlled / Voltage Controlled crystal Oscillator
TCXO
Temperature Compensated crystal Oscillator
TCXO
Temperature Controlled crystal Oscillator
TD
Transfer Descriptor
TDD
Time Division Duplex
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Glossary of Technical Terms
Term
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Definition
TDM
Time Division Multiplexing
TDMA
Time Division Multiple Access
TDOP
Time Dilution Of Precision
TERL
Test Equipment Reference List
TFBGA
Thin Fine-Pitch Ball Grid Array
TFS
Transmit Sync Signal
TG
Timing Generator
THD
Total Harmonic Distortion
THD+N
Total Harmonic Distortion and Noise
TID
Traffic IDentifier
TIFF
Tagged Image File Format
TIM
Traffic Indication Map
TKIP
Temporal Key Integrity Protocol
TL
TerminaL
TLS
Transport Layer Security
TLV
Type, Length, Value
TMC
Traffic Message Channel
TOW
Time Of Week
TP
Test Point
TP
Test Purposes
TP
Traffic Programme identification
TricklePower™
Power-saving feature on SiRFstarIV™
TPC
Transmit Power Control
TPO
Transmitter Power Output
TRC
Tone Response Curve
TriG™
Group term for CSR’s range of Triple GNSS (GPS, GLONASS and Galileo) ICs
TRL
Through-Reflect-Line. A calibration technique.
TS
Timing Stream
TS
Touch Screen
TS
Transport Stream
TSC
TKIP Sequence Counter
TSC
Touch Screen Controller
TSCIF
Temporary Sensitive Compartmented Information Facility
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Term
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Definition
TSF
Timing Synchronisation Function
TSID
Traffic Stream IDentifier
TSPEC
Traffic SPECification
TSS
Test Suite Structure
TTB
Time-Transfer Board
TTCN
Tree and Tabular Combined Notation
TTF
Time To Fix
TTFF
Time To First Fix
TTL
Time To Live
TTP
Tiny Transport Protocol
TTR
Time-To-Reacquisition
TTS
Text-To-Speech
TU
Time Unit (1024 microseconds)
TURN
Traversal Using Relay NAT
TV
TeleVision
TWAIN
Image capture API, see www.twain.org
TWC
Three Way Calling
TX
Transmit or Transmitter
TXD
Transmit Data
TXOP
Transmit Opportunity
TXSR
Self-refresh Exit Time
UA
User Asynchronous
UAP
Upper Address Part
UART
Universal Asynchronous Receiver Transmitter
U-APSD
Unscheduled Automated Power Save Delivery
UBM
Under-Bump Metallisation
UC
User Control
UCID
Universal Cell ID
UDI
UniFi Device Interface
UDMA
Ultra-Direct Memory Access
UDP
User Datagram Protocol
UDP/IP
User Datagram Protocol/Internet Protocol
UFE
Universal Front End
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Term
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Definition
UFFS
Ultra-Fast Frame Sync
UFST
Universal Font Scaling Technology
UHCI
Upper Host Control Interface
UI
User Interface
UIAC
Unlimited Inquiry Access Code
UICC
Universal Integrated Chip Card
UL
UpLink
ULPI
UI+ Low-Pincount Interface
UTLI
UTmi+ Low pin Interface (12-pin interface standard for connecting USB core logic to a USB
transceiver)
UltraCore®
Group term for CSR’s range of Ultra-Wideband ICs
UMA
Unlicensed Mobile Access
UMPC
Universal Mobile Personal Computer
UMTS
Universal Mobile Telecommunications System
UniCli
UniFi Command line interface
UniFi®
Group term for CSR’s range of ICs designed to meet IEEE 802.11 standards
Unity
Collective name for CSR’s Bluetooth/Wi-Fi coexistence schemes
Unity+
CSR’s advanced coexistence scheme. Extra signalling wire used in conjunction with Unity-3 or
Unity-3e for improved coexistence with periodic Bluetooth activity.
Unity-3
De facto industry standard 3-wire coexistence signalling scheme
Unity-3e
Variant of Unity-3 with tighter timings for enhanced performance
UniVox
VoIP phone based on CSR's UniFi single-chip Wi-Fi technology
UP
User Plane
UP
User Priority
UPA
User Plane Agent
URB
USB Request Block
URI
Uniform Resource Identifier
URL
Uniform Resource Locator
US
United States
US
User Synchronous
USART
Universal Serial Asynchronous Receiver Transmitter
USB
Universal Serial Bus
USB
Upper Side-Band
USB-IF
USB Implementers Forum
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Glossary of Technical Terms
Term
Definition
USP
Universal Serial Ports
USP
Universal Storage Platform
UTC
Co-ordinated Universal Time
UUID
Universally Unique IDentifier
UUT
Unit Under Test
UWB
Ultra-WideBand
VAD
Voice Activity Detection
Varid
Variable Identifier
VB
Visual Basic
VBG
Voltage BandGap
VCO
Voltage Controlled Oscillator
VCTCXO
Voltage Controlled Temperature Compensated crystal Oscillator
VDOP
Vertical Dilution of Precision
VDP
Variable Data Processing
VFBGA
Very thin, Fine pitch, Ball Grid Array
VFP
Vector Floating Point
VGA
Variable Gain Amplifier
VGA
Video Graphics Array
VGP
Vertex Geometry Processor
VGS
Volume Gain Setting
VI
VIdeo
VI
Virtual Instrument
VID
Value ID
VID
Vendor ID used to identify USB devices
VIP
Video Input Port
VIPS
Video Image Printer System
VLAN
Virtual Local Area Network
VLMU
Virtual Local Measurement Unit
VM
Virtual Machine
VNA
Vector Network Analyser
VO
VOice
VoIP
Voice over Internet Protocol
VoWi-Fi
Voice over Wi-Fi
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Term
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Definition
VPP
Video Post Processor
VREG
Linear Voltage REGulator
VSWR
Voltage Standing Wave Ratio
VTG
NMEA string: Course Over Ground and Ground Speed
VU
Vendor Unique
W3C
World Wide Web Consortium
WAAS
Wide Area Augmentation System
WAE
Wireless Application Environment
WAP
Wireless Application Protocol
WAPI
WLAN Authentication and Privacy Infrastructure
WBE
WideBand for Everyone
WBFH
WideBand Frequency Hopping
W-CDMA
Wideband Code Division Multiple Access
WCS
Wireless Coexistence System
WD
WatchDog module
WDP
Wireless Datagram Protocol
WDR
WatchDog Reset
WDS
Wireless Distribution System
WE
Write Enable
WEB
Write EnaBle (active low)
WEL
Write Enable Latch
WEP
Wired Equivalent Privacy
WEXT
Wireless EXTension
WFA
Wi-Fi® Alliance
WGS-84
World Geodetic System (1984)
WHCI
Wireless Host Controller Interface
WHQL
Windows® Hardware Qualification Labs
Wi-Fi®
Wireless Fidelity (IEEE 802.11 wireless networking)
Wi-Fi Protected
Setup™
A standard for easy and secure establishment of a wireless home network, created by the WiFi Alliance
WIA
Windows Imaging Acquisition
WiMedia
Radio platform standard for high-speed Ultra-Wideband (UWB) wireless connectivity
WinCE
Windows Compact Edition
WLAN
Wireless Local Area Network
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Term
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Definition
WLCSP
Wafer Level Chip Scale Package
WLK
Windows Logo Kit
WLL
Wireless Local Loop
WMA
Windows Media Audio
WML
Wireless Markup Language
WMM®
Wi-Fi Multimedia
WMM-AC
WMM Admission Control
WMM-PS
WMM Power-Save
WMM-SA
WMM Scheduled Access
WMR
WarM Reset
WMV
Windows Media Video
WNR
Wind Noise Reduction
WO
Write Only
WPA®
Wi-Fi Protected Access®
WPA2®
Wi-Fi Protected Access 2 (same as IEEE 802.11i)
wpa_supplicant
IEEE 802.1x/WPA component used in the Linux client stations
WPF
Windows Presentation Foundation
WPS
Wi-Fi Protected Setup (DO NOT ABBREVIATE)
WS
Word Select
WSD
Web Services on Devices
WSP
Wireless Session Protocol
WTA
Wireless Telephony Application
WTP
Wireless Session Protocol
WUG
Wireless User Group
WUSB
Wireless Universal Serial Bus
www
World Wide Web
WZC
Wireless Zero Config (Windows)
X
eXcluded
XAP
Low-power silicon-efficient RISC microprocessor
XCORR
Cross CORRelation
XO
Crystal Oscillator
XI²C
eXtended I²C
xIDE
CSR's Integrated Development Environment for BlueCore applications
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Glossary of Technical Terms
Term
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Term
Definition
XIO
eXtended Input Output
XML
eXtensible Markup Language, a general-purpose specification for creating custom markup
languages
XPS
XML Paper Specification
XTAL
Crystal
YABCSP
Variant of BCSP designed for embedded applications
YUV
Luminance-Bandwidth-Chrominance
Z
Usually in the phrase high Z to mean high impedance
ZDA
NMEA string: Time & Date
Glossary of Technical Terms
© Cambridge Silicon Radio Limited 2008 - 2013
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