User's Manual

6881094C31-C October 14, 2003
Glossary-7
real-time clock A module that keeps track of elapsed time even when a computer is
turned off.
receiver 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.
registers Short-term data-storage circuits within the microcontroller unit or
programmable logic IC.
repeater Remote transmit/receive facility that re-transmits received signals in
order to improve communications range and coverage (conventional
operation).
repeater/talkaround 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 Reset line: an input to the microcontroller that restarts execution.
RF See radio frequency.
RF PA See radio frequency power amplifier.
RIB See Radio Interface Box.
ROM See read-only memory.
RPCIC Regulator/power control IC.
RSS See Radio Service Software.
RTC See real-time clock.
RX Receive.
RX DATA Recovered digital data line.
SAP See Serial Audio CODEC Port.
SCI IN See Serial Communication Interface Input Line.
Serial Audio CODEC
Port
SSI to and from the GCAP II IC CODEC used to transfer transmit and
receive audio data.
Serial
Communication
Interface Input Line
A full-duplex (receiver/transmitter) asynchronous serial interface.
Serial Input/Output
IC
An integrated circuit that provides SB9600 serial and power-control
functions.
Serial Peripheral
Interface
How the microcontroller communicates to modules and ICs through the
CLOCK and DATA lines.
Term Definition