6881094C31-E
November 16, 2006
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
RF PA
See radio frequency power amplifier.
RIB
ROM
RPCIC
Regulator/power control IC.
RSS
RTC
RX
Receive.
RX DATA
Recovered digital data line.
SAP
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
Summary of Contents for ASTRO XTS-5000
Page 7: ...vi Table of Contents November 16 2006 6881094C31 E Notes ...
Page 11: ...x List of Figures November 16 2006 6881094C31 E Notes ...
Page 17: ...November 16 2006 6881094C31 E xvi CommercialWarranty Notes ...
Page 31: ...November 16 2006 6881094C31 E xxx Portable Radio Model Numbering System Notes ...
Page 83: ...November 16 2006 6881094C31 E 3 44 Theory of Operation Encryption Module ...
Page 135: ...November 16 2006 6881094C31 E 5 44 Troubleshooting Charts Secure Hardware Failure Notes ...
Page 175: ...November 16 2006 6881094C31 E 7 32 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 367: ...November 16 2006 6881094C31 E Glossary 10 Notes ...
Page 373: ...Index 6 November 16 2006 6881094C31 E Notes ...