Glossary - Motorola XTS 2500 Basic Service Manual

Glossary

A/D
ABACUS IC
CPS
CODEC
D/A
DTMF
DPL
DSP
Firmware
FGU
FLASHport™
Host
Host Port
IC
IMBE
MCU
MDC
MISO
MOSI
Open Architecture
PC Board
PCIC
PL
PLL
Analog-to-Digital converter; converts an instantaneous dc voltage level to a corresponding digital
value.
Custom integrated circuit providing a digital receiver IF backend.
Customer Programming Software
Coder/Decoder IC for analog-to-digital and digital-to-analog conversion.
Digital-to-Analog converter; converts a digital value to a corresponding dc voltage value.
Dual-Tone Multi-Frequency
Digital Private-Line™
Digital Signal Processor; microcontroller specifically tailored for signal processing
computations. In this case refers specifically to Motorola DSP56603.
Software or a software/hardware combination of computer programs and data, with a fixed logic
configuration stored in a read-only memory; information can not be altered or reprogrammed.
Frequency Generation Unit
A Motorola term that describes the ability of a radio to change memory. Every FLASHport radio
contains a FLASHport EEPROM memory chip that can be software written and rewritten to,
again and again.
Motorola HC12A4 microcontrol unit U204 (see MCU).
Parallel memory mapped interface consisting of eight registers in the DSP56603.
Integrated Circuit
Improved Multi-Band Excitation: a sub-band, voice encoding algorithm used in ASTRO digital
voice.
MicroControl Unit
Motorola Digital Communications
Master In Slave Out; used by the slave device to send data to the master device
Master Out Slave In; used by the master device to send data to the slave device.
A controller configuration that utilizes a microprocessor with extended ROM and RAM.
Printed Circuit board
Power Control IC
Private-Line ® tone squelch; a continuous sub-audible tone that is transmitted along with the
carrier.
Phase-Locked Loop; a circuit in which an oscillator is kept in phase with a reference, usually
after passing through a frequency divider.
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