Motorola ASTRO XTL 5000 Basic Service Manual page 189

Term
LCD
LED
light emitting diode
liquid-crystal display
LO
Local Oscillator
low-speed
handshake
LSH
Master In Slave Out
Master Out Slave In
MCU
MDC
MDI
MHz
Megahertz
microcontroller unit
MISO
MOSI
multiplexer
MUX
OMAP
open architecture
oscillator
6871769L01-A
See liquid-crystal display.
See light emitting diode.
An electronic device that lights up when electricity is passed through it.
An LCD uses two sheets of polarizing material with a liquid-crystal
solution between them. An electric current passed through the liquid
causes the crystals to align so that light cannot pass through them.
See Local oscillator.
Oscillator used in a super heterodyne receiver to down-convert a
received signal to the intermediate frequency.
150-baud digital data sent to the radio during trunked operation while
receiving audio.
See low-speed handshake.
SPI data line from a peripheral to the MCU.
SPI data line from the MCU to a peripheral.
See microcontroller unit.
Motorola Digital Communications.
MCU/DSP Interface internal to the microprocessor IC.
See Megahertz.
One million cycles per second. Used especially as a radio-frequency
unit.
Also written as µC. A microprocessor that contains RAM and ROM
components, as well as communications and programming components
and peripherals.
See Master In Slave Out.
See Master Out Slave In.
An electronic device that combines several signals for transmission on
some shared medium (e.g., a telephone wire).
See multiplexer.
An ARM core microcontroller
A controller configuration that utilizes a microprocessor with extended
ROM, RAM, and EEPROM.
An electronic device that produces alternating electric current and
commonly employs tuned circuits and amplifying components.
Definition
Glossary-5
October 30, 2006