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Motorola ASTRO Digital XTL 5000 Detailed Service Manual

Motorola ASTRO Digital XTL 5000
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May 25, 2005 6881096C74-B
Glossary-8
SRAM See static RAM.
SRIB Smart Radio Interface Box. See RIB.
SSI See Synchronous Serial Interface.
Standby mode An operating mode in which the radio is muted but still continues to
monitor data.
static RAM A type of memory used for volatile, program/data memory that does not
need to be refreshed.
Synchronous Serial
Interface
DSP interface to peripherals that consists of a clock signal line, a frame
synchronization signal line, and a data line.
system central
controllers
Main control unit of the trunked dispatch system; handles ISW and
OSW messages to and from subscriber units (See ISW and OSW).
system select The act of selecting the desired operating system with the system-select
switch (also, the name given to this switch).
thin small-outline
package
A type of dynamic random-access memory (DRAM) package that is
commonly used in memory applications.
time-out timer A timer that limits the length of a transmission.
TOT See time-out timer.
transceiver Transmitter-receiver. A device that both transmits and receives analog
or digital signals. Also abbreviated as XCVR.
transmitter Electronic equipment that generates and amplifies an RF carrier signal,
modulates the signal, and then radiates it into space.
TSOP See thin small-outline package.
TX Transmit.
UART See also Universal Asynchronous Receiver Transmitter.
UCM Universal Crypto Module.
UHF Ultra-High Frequency.
Universal
Asynchronous
Receiver Transmitter
A microchip with programming that controls a computer's interface to its
attached serial devices.
Universal Serial Bus An external bus standard that supports data transfer rates of 12 Mbps.
Urchin IC A programmable logic device configured to supply a 2.8 V, 48 kHz
square wave at 2% duty cycle and a 2.8 V, 2.4 MHz square wave at
50% duty cycle to the TX modulation DAC using a 16.8 MHz reference
input.These clock signals are used by the DAC to convert the digital
SSI audio into an analog modulation waveform.
Term Definition

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Motorola ASTRO Digital XTL 5000 Specifications

General IconGeneral
BrandMotorola
ModelASTRO Digital XTL 5000
CategoryRadio
LanguageEnglish

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