EDSTRG44PLCC datasheet(37/78 Pages) TI

37 / 78 page

GLOSSARY/SYMBOLS, TERMS, AND DEFINITIONS

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glossary / symbols, terms, and definitions

absolute addressing mode:

An addressing mode in which code or operands produce the actual address

address:

Any given memory location in which data can be stored or from which data can be retrieved

addressing mode:

The method by which an instruction calculates the location of its required data

analog-to-digital converter (ADC):

An 8-bit successive-approximation converter with internal sample-and-hold

circuitry. Also referred to as ADC1, ADC2, or ADC3. ADC1 is an 8-channel ADC, except for the 40-pin

TMS370Cx4x devices which have only four channels. ADC2 is a 4-channel ADC. And ADC3 is a 15-channel ADC.

ANSI C:

A version of the C programming language that conforms to the C standards defined by the

American Na-

tional Standards Institute

archiver:

A software program that allows the collection of several individual files into a single file called an archive

library. The archiver also allows the addition, deletion, extraction, or replacement of members of the archive library.

assembler:

A software program that creates a machine-language program from a source file containing assembly

language instructions, directives, and macro directives. The assembler substitutes absolute operation codes for

symbolic operation codes, and absolute or relocatable addresses for symbolic addresses.

assembly language:

A symbolic language that describes the binary machine code in a more readable form. Each

of the 73 unique instructions of the TMS370 family converts to one machine operation.

asynchronous-communications mode:

An SCI mode that needs no synchronizing clock. The asynchronous

communications mode format consists of a start bit followed by data bits, an optional parity bit, and a stop bit. This

format commonly is used with RS-232-C communications and PC serial ports.

baud:

The communication speed for serial ports; equivalent to bits per second

BCD:

Binary coded decimal. Each 4-bit nibble expresses a digit from 0–9 and usually packs two digits to a byte,

giving a range of 0–99.

bit:

Contraction of

binary digit i.e., a 1 or a 0. In electrical terms, the value of a bit can be represented by the pres-

ence or absence of charge, voltage, or current.

breakpoint, trace, and timing (BTT) features:

A set of features supported by the BTT board (included with the

XDS/22 emulation system). These features allow the setting of hardware breakpoints, collecting of trace samples,

and performing timing analysis.

buffer pointer:

A 5-bit register in the PACT module peripheral frame that points to the next available location in

the circular-capture buffer

byte:

A sequence of eight adjacent bits operated upon as a unit

EDSTRG44PLCC Datasheet(PDF) 37 Page - Texas Instruments

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