Motorola APX 5000 User Manual

Sec 1: 3-10 Basic Theory of Operation: Controller Section
3.4 Controller Section
The controller section (see Figure 3-11) comprises of five functional sections that are split among two
boards, which are the VOCON and EXPANSION boards. The main functional section consists of a
dual core ARM and DSP controller, Flash memory, and a Double Data Rate Synchronous Dynamic
Random Access Memory (DDR SDRAM). The Power and Clocks section includes a power
management IC (MAKO) and various external switching regulators, and two clock sources (12 MHz
and 24.576 MHz) from which all other controller digital clocks are derived. The Audio section has a
CODEC and a class-D audio power amplifier that provides the radio with a multiple microphone,
single speaker design. The User Interface section provides communication and control to the top
and main Liquid Crystal Displays (LCD) on the radio, as well as a keypad and a side connector
interface conforming to Universal Connector specifications. The Mace Expansion Board consists on
the main class-D audio power amplifier and the Type III secure IC (MACE). In addition to the Mace
features, the Mace with Apps Expansion Board consists of an e-MMC NAND Flash (4GB), a
combination integrated-circuit consisting of a Global Positioning System (GPS) receiver and a
Bluetooth (BT) 2.1 transceiver, an encryption processor (MACE), and a 3-axes digital accelerometer.
Figure 3-11. Controller Block Diagram
USER INTERFACE
Top Display
Data Display
KeyPad
Expansion Board:
Side Connector
POWER & CLOCKS
Clocks Sources:
12 Mhz
24.576 Mhz
CONTROLLERS & MEMORY
ARM Processor
Digital Signal Processor
Flash Memory
DDR Memory
Encryption Processor
EXPANSION MEMORY, BLUETOOTH/GPS
& ENCRYPTION PROCESSOR
Voltage Regulators
AUDIO
Expansion Board Audio:
Main Amplifier / Speaker
Main Microphone
Data Microphone
Acc. Speaker
Acc. Microphone
RF Interface
Battery Supply
Top Display
Interface
Data Display &
KeyPad
Side
Connector
Expansion Board
(Basic Version):
Expansion Board
(Full Version):
Encryption Processor
Encryption Processor
e-MMC NAND Flash (4GB)
Bluetooth
GPS
Accelerometer

Motorola APX 5000 Specifications

General

Brand	Motorola
Model	APX 5000
Category	Two-Way Radio
Language	English