Motorola ASTRO XTL 1500 Detailed Service Manual page 439

Glossary-8
Term
SRAM
SRIB
SSI
Standby mode
static RAM
Synchronous Serial
Interface
system central
controllers
system select
thin small-outline
package
time-out timer
TOT
transceiver
transmitter
TSOP
TX
UART
UCM
UHF
Universal
Asynchronous
Receiver Transmitter
Universal Serial Bus
Urchin IC
June 15, 2005
See static RAM.
Smart Radio Interface Box. See RIB.
See Synchronous Serial Interface.
An operating mode in which the radio is muted but still continues to
monitor data.
A type of memory used for volatile, program/data memory that does not
need to be refreshed.
DSP interface to peripherals that consists of a clock signal line, a frame
synchronization signal line, and a data line.
Main control unit of the trunked dispatch system; handles ISW and
OSW messages to and from subscriber units (See ISW and OSW).
The act of selecting the desired operating system with the system-select
switch (also, the name given to this switch).
A type of dynamic random-access memory (DRAM) package that is
commonly used in memory applications.
A timer that limits the length of a transmission.
See time-out timer.
Transmitter-receiver. A device that both transmits and receives analog
or digital signals. Also abbreviated as XCVR.
Electronic equipment that generates and amplifies an RF carrier signal,
modulates the signal, and then radiates it into space.
See thin small-outline package.
Transmit.
See also Universal Asynchronous Receiver Transmitter.
Universal Crypto Module.
Ultra-High Frequency.
A microchip with programming that controls a computer's interface to its
attached serial devices.
An external bus standard that supports data transfer rates of 12 Mbps.
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.
Definition
6815854H01-A