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© Cambridge Silicon Radio Limited 2008 - 2013
Page 1 of 48CS-119471-UGP14
www.csr.com
Glossary of Technical TermsIssue 14
Document HistoryRevision 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 brandingIf you have any comments about this document, email [email protected] giving thenumber, title and section with your feedback.
1 IntroductionThis document defines the technical terms used by CSR.
Terms and DefinitionsTerm 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 telecommunicationsassociations, 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
© Cambridge Silicon Radio Limited 2008 - 2013
Page 2 of 48CS-119471-UGP14
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Glossary of Technical Term
s
Term 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 besynchronised with a desktop PC or a server
ad-hoc In wireless communication, ad-hoc is discovering and communicating to other devices with peer-to-peer communications without using central access points
ADC Analogue to Digital Converter
© Cambridge Silicon Radio Limited 2008 - 2013
Page 3 of 48CS-119471-UGP14
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Glossary of Technical Term
s
Term 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
© Cambridge Silicon Radio Limited 2008 - 2013
Page 4 of 48CS-119471-UGP14
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Glossary of Technical Term
s
Term 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
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
s
Term 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 inputor 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
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
s
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
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
s
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
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
s
Term 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 orprograms through an HTTP server.
CGU Clock Generation Unit
CI Capacitance Input
CI Cell Identity
CI Command Interpreter
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
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Term 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 andimplements 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
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
s
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
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
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Term 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
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
s
Term 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
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
s
Term 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
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
s
Term 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
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
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Term 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
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
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Term 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 inseveral 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
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
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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
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
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Term 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 thecustomer’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 Term
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Term Definition
HFP Hands-Free Profile
HFK Hands-Free Kit. Voice-processing configuration used in automotive and other hands-free modesof 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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Glossary of Technical Term
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Term 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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Glossary of Technical Term
s
Term 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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Glossary of Technical Term
s
Term 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 asecho 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 Term
s
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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Glossary of Technical Term
s
Term 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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Glossary of Technical Term
s
Term 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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Glossary of Technical Term
s
Term 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 Term
s
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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Glossary of Technical Term
s
Term 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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Glossary of Technical Term
s
Term 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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Glossary of Technical Term
s
Term 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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Glossary of Technical Term
s
Term 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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Glossary of Technical Term
s
Term 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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Glossary of Technical Term
s
Term 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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Glossary of Technical Term
s
Term 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 phonoconnector 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 Term
s
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 computersand 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 Term
s
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 transportand 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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Glossary of Technical Term
s
Term 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 quotedaccurately, 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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Glossary of Technical Term
s
Term 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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Glossary of Technical Term
s
Term 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 designedto transfer stereo digital audio signals between various devices and stereo components withminimal 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 databasesand 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 Term
s
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 Term
s
Term 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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Glossary of Technical Term
s
Term 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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Glossary of Technical Term
s
Term 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 USBtransceiver)
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 orUnity-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 Term
s
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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Glossary of Technical Term
s
Term 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 ProtectedSetup™
A standard for easy and secure establishment of a wireless home network, created by the Wi-Fi 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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Glossary of Technical Term
s
Term 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
© Cambridge Silicon Radio Limited 2008 - 2013
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Glossary of Technical Term
s
Term Definition
XIO eXtended Input Output
XML eXtensible Markup Language, a general-purpose specification for creating custom markuplanguages
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
© Cambridge Silicon Radio Limited 2008 - 2013
Page 48 of 48CS-119471-UGP14
www.csr.com
Glossary of Technical Term
s