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Glossary-2
Term
digital signal
processor
DSP
DTMF
dual tone multi-
frequency
EEPROM
Electrically Erasable
Programmable
Read-Only Memory
FCC
firmware
FGU
flash
FLASHcode
FLASHport
frequency
frequency
generation unit
IC
IF
October, 2007
A microcontroller specifically designed for performing the mathematics
involved in manipulating analog information, such as sound, that has
been converted into a digital form.
See digital signal processor.
See dual tone multi-frequency.
The system used by touch-tone telephones. DTMF assigns two specific
frequencies, or tones, to each key so that it can easily be identified by a
microprocessor.
See Electrically Erasable Programmable Read-Only Memory.
A special type of PROM that can be erased by exposing it to an
electrical charge. An EEPROM retains its contents even when the
power is turned off.
Federal Communications Commission.
Code executed by an embedded processor such as the Host or DSP in
a subscriber radio. This type of code is typically resident in non-volatile
memory and as such is more difficult to change than code executed
from RAM.
See frequency generation unit.
A non-volatile memory device similar to an EEPROM. Flash memory
must be erased and reprogrammed in blocks instead of one byte at a
time.
A 13-digit code which uniquely identifies the System Software Package
and Software Revenue Options that are enabled in a particular
subscriber radio. FLASHcodes are only applicable for radios which are
upgradeable through the FLASHport process.
A Motorola term that describes the ability of a radio to change contents
of memory. Every FLASHport radio contains a FLASHport EEPROM
memory chip that can be software written and rewritten to, again and
again.
Number of times a complete electromagnetic-wave cycle occurs in a
fixed unit of time (usually one second).
This unit generates ultra-stable, low-phase noise master clock and other
derived synchronization clocks that are distributed throughout the
communication network.
See integrated circuit.
Intermediate Frequency.
Definition
6880309U11
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