3-22 Theory of Operation: Controller
3.2.1.1 Main Controller Components and Connections
3.2.1.1.1 Main Board Controller section
The controller section contains the Class D internal audio power amplifier, OMAP1710 dual-core
processor, FLASH and SDRAM memory, Audio circuitry (MAKO and CODEC IC's), a Complex
Programmable Logic Device (CPLD), and interfaces to the other components in the controller
design.
Connectors
• Keypad – J2305
3.2.1.1.2 Keypad Board
The keypad board features a 3x2 Menu keypad with 4-way navigation button, a 3x4 alphanumeric
keypad, or a 3x1 Menu keypad.
Connectors
• Main Board – P2001, P1000
• Frontkit flex – P2000
3.2.1.1.3 GCAI Flex
The GCAI flex contains an Audio Mic, TX/RX LED that is solid amber upon receive, red on PTT and
blinking amber on receive, status LED, and audio mic and a connector to interface with the frontkit
flex. The flex comes with components for ESD protection.
3.2.1.2 Front kit Flex
The frontkit contains a speaker, multifunction rotary knob, connectors to the front display, GCAI flex,
side control flex and keypad board. The multifunction rotary knob is used for ON/OFF volume and
channel/frequency.
3.2.1.2.1 Front Display
The Front Display is a TFT transflective color LCD, 160 pixels x 90 pixels with a white backlight. The
display connects through a flex directly to a 22-pin connector located on the frontkit flex.
3.2.1.2.2 Data-Side Microphone
The data-side microphone is mounted on the front chassis and connects directly to the Main board
through a set of pogo pins mounted on the Main board.
3.2.1.2.3 Side Controls Flex
The side controls flex contains the PTT, Side Top button, Side Middle button and Side Bottom
button.The flex connects to the frontkit flex through a 10-pin connector.
3.2.1.2.4 Audio-Side Microphone and Speaker
The audio-side microphone is located on the GCAI flex and connected to Frontkit flex. The speaker
assembly is located on the Frontkit flex.
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