Motorola ASTRO XTSTM 4000 Detailed Service Manual page 201

Glossary
Term
read-only memory
real-time clock
receiver
registers
repeater
repeater/talkaround
RESET
RF
RF PA
RIB
ROM
RPCIC
RSS
RTC
RX
RX DATA
SAP
SCI IN
Serial Audio CODEC
Port
Serial
Communication
Interface Input Line
Serial Input/Output
IC
6871620L01-C
A type of computer memory on which data has been prerecorded. Once
data has been written onto a ROM chip, it cannot be removed and can
only be read.
A module that keeps track of elapsed time even when a computer is
turned off.
Electronic device that amplifies RF signals. A receiver separates the
audio signal from the RF carrier, amplifies it, and converts it back to the
original sound waves.
Short-term data-storage circuits within the microcontroller unit or
programmable logic IC.
Remote transmit/receive facility that re-transmits received signals in
order to improve communications range and coverage (conventional
operation).
A conventional radio feature that permits communication through a
receive/transmit facility, which re-transmits received signals in order to
improve communication range and coverage.
Reset line: an input to the microcontroller that restarts execution.
See radio frequency.
See radio frequency power amplifier.
See Radio Interface Box.
See read-only memory.
Regulator/power control IC.
See Radio Service Software.
See real-time clock.
Receive.
Recovered digital data line.
See Serial Audio CODEC Port.
See Serial Communication Interface Input Line.
SSI to and from the GCAP II IC CODEC used to transfer transmit and
receive audio data.
A full-duplex (receiver/transmitter) asynchronous serial interface.
An integrated circuit that provides SB9600 serial and power-control
functions.
Definition
Glossary-7
May 28, 2008