Glossary & Abbreviations

AC Alternating Current
ADC Analog-to-Digital Converter
AOI Automated Optical Inspection
API Application Programming Interface
ASIC Application Specific Integrated Circuit
ATE Automated Test Equipment
ATPG Automatic Test Pattern Generation
AXI Automated X-Ray Inspection
BGA Ball Grid Array
Boundary Scan A method allowing you to observe and have complete control of the boundary pins of a JTAG compatible device via software control.
BSDL Boundary Scan Description Language
BSR Boundary Scan Register
BST Boundary Scan Test
CAD Computer Aided Design
CEM Contract Electronic Manufacturer. A firm that manufactures components or products for and based on the design of another hiring firm.
COB Chip on Board
COM Component Object Model, a standard Windows programming interface
Compliance Pin A pin on a JTAG Compliant Device which must be held or sequenced to a particular state, as defined by the manufacturer, before the device will operate as a JTAG Compliant Device.
CPLD Complex Programmable Logic Device
CPU Central Processing Unit
CSP Chip Scale Package
DC Direct Current
DCE Data Circuit-terminating Equipment
DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
DFT Design for Test  /  Design for Testability
DIL Dual In-Line
DIP Dual In-line Package
DLL Dynamic Link Library
DRAM Dynamic Random Access Memory
DSP Digital Signal Processor
DTE Data Terminal Equipment
DUT Device Under Test
DVM Digital Voltmeter
ECM Electronic Contract Manufacturing
EDA Electronic Design Automation
EDIF Electronic Device Interchange Format
EEPROM Electrically Erasable Programmable Read-Only Memory (same as E2PROM)
EMC Electromagnetic compatibility
EMS Electronic Manufacturing Services (see also ECM). Term used for companies that design, test, manufacture, distribute and provide return/repair services to OEMs.
FBT Functional Board Test
FCT Functional Test
FIFO First In – First Out
FPGA Field Programmable Gate Array
FPT Flying Probe Test
HSDL Hierarchical Scan Description Language (complements BSDL)
I²C Inter-Integrated Circuit (or “two-wire interface”) is a multi-master serial single-ended computer bus
IC Integrated Circuit
ICT In-Circuit Test
IDC Insulation-Displacement Connector
IEEE 1149.1 IEEE (Institute of Electrical and Electronics Engineers) Standard 1149.1-1990 “Test Access Port and Boundary Scan Architecture” (see
I/O Input/Output
IP Intellectual Property
ISP In-System Programming – the technique of programming devices after they have been soldered into the circuit board
JEDEC Joint Electron Device Engineering Council
JTAG Joint Test Action Group (usually refers to IEEE 1149.1 standard compliance)
JTAG Chain The serial connection of one or more JTAG Compliant Devices. The TDO from one device is linked to the TDI of the next device in order to form a single serial shift register across the chain of devices. TMS and TCK are connected in parallel to each device.
 JTAG Compliant Device An integrated circuit or device which implements Boundary Scan and complies with IEEE 1149.1
MCM Multi Chip Module
MCU or µC Microcontroller Unit
μP Microprocessor
.NET .NET Framework, a standard Windows programming interface
Netlist A netlist is a text (ASCII) file that contains all the components and their electrical connections on a circuit board.
NRE Non-Recurring Engineering
NTRST Test Reset (Active low TAP Signal)
NVM Non-Volatile Memory
OE Output Enable
ODM ‘Original Design Manufacturer’ of a product which ultimately will be branded by another firm for sale
OEM ‘Original Equipment Manufacturer’ of a hardware component or sub-component.A company that sells products (including software) under its own label.
PCB Printed Circuit Board
PGA Pin Grid Array
PIO Programmable Input/Output
PLCC Plastic Leadless Chip Carrier
PLD Programmable Logic Device
PLL Phase Locked Loop
QFP Quad Flat Pack
RAM Random Access Memory
RS232 Recommended Standard 232 for serial binary single-ended data and control signals connecting between a DTE and a DCE
SMD Surface Mount Device
SMT Surface Mount Technology
SoC System-on-Chip
SOIC Small-Outline Integrated Circuit
SOJ Small-Outline J-Lead
SRAM Static Random Access Memory
SSRAM Synchronous Static Random Access Memory
STAPL Standard Test and Programming Language (JAM)
SVF Serial Vector Format
TAP Test Access Port (the 4- or 5-wire interface to a boundary scan device)
TCK Test Clock (TAP Signal)
TDI Test Data Input (TAP signal)
TDO Test Data Output (TAP signal)
TMS Test Mode Select (TAP signal)
TRST Test Reset (Active low TAP signal)
TSOP Thin Small-Outline Package
UART Universal Asynchronous Receiver/Transmitter
UUT Unit Under Test (can refer to components, boards, modules or systems)
VHDL VHSIC Hardware Description Language
VHSIC Very High Speed Integrated Circuit
VI Virtual Instrument – program written in National Instrument’s LabVIEW™ or other programming languages, to create user-defined hybrid test systems
VLSI Very Large Scale Integration
XJTAG A suite of software and hardware products aiding the development and test of electronic systems


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