3-30 Theory of Operation: Controller
3.2.1.1 Main Controller Components and Connections
3.2.1.1.1 VOCON Board
The VOCON Board contains the OMAP1710 dual-core processor, FLASH and SDRAM memory,
Audio circuitry (MAKO and CODEC IC's), a Complex Programmable Logic Device (CPLD), the
MACE encryption IC, and interfaces to the other components in the controller design.
Connectors
• RF Board – J1001
• Expansion Board – J4001
• Bluetooth Option Board – J3001
• Control Top – J2101
• Front Chassis – J2301
3.2.1.1.2 Expansion Board
The expansion board contains the Class D Internal Audio PA with speaker connections, the Global
Positioning System (GPS) circuitry, a removable memory card connector / interface, and connector
interfaces to the GCAI board and side controls flex.
Connectors
• VOCON Board – P2001
• Side Controls – J2005
• GCAI – J2004
3.2.1.1.3 GCAI Connector / Board
The GCAI Connector Board contains the side connector pins, and interfaces to the expansion board
through a flex. The board has this flex connector, along with components for ESD protection.
3.2.1.1.4 Bluetooth Option Board Interface
The Bluetooth Option Board interface is a 60-pin connector contains various interfaces from the
VOCON Board.
3.2.1.2 Top Controls / Flex
The control top contains the top display, the main RF antenna, and five switches: On/Off & Volume
Knob, a 16-position Channel/Frequency Switch with concentric 2-position switch (for secure enable/
disable operation), a 3 position toggle switch for Zone Selection, and a toggle switch used for
Emergency Calling. The control top also includes an TX/RX LED that is solid amber upon receive,
red on PTT, and blinking amber on secure TX/RX.
3.2.1.2.1 Top Display
The Top Display is a FSTN transflective monochrome liquid crystal display (LCD) with a multi-color
backlight (White, Red, Green, and Amber), which connects to the Control Top Flex (see Section
3.2.1.2: "Top Controls / Flex").
3.2.1.2.2 Front Display
The Front Display is a QVGA transflective color LCD, 320 pixels x 240 pixels with a white backlight.
The display connects to the keypad flex.
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