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AUDIO DEVELOPMENT BOARD
USER ’S GUIDE
Chapter 2. Hardware
This chapter provides a functional overview of the hardware used in the Audio
Development Board and identifies the major hardware components.
Topics covered include:
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Power Supply
Microcontroller
Audio Codec, Microphone and Audio Connections
PICtail? Plus Connector
TFT Display
USB Connectivity
UART Connectivity
User LEDs and Switches
2.1
2.2
POWER SUPPLY
Power can be supplied to the Audio Development Board through the DC connector
(J1). By connecting a 9V power supply to the DC connector, the Audio Development
Board and the expansion connector will receive the proper voltages.
CAUTION
Care should be exercised while working with headphones or speakers. Exposure to
high volumes can result in hearing damage. The use of headphones or speakers with
built-in volume control is recommended.
MICROCONTROLLER
The microcontroller (U2) on-board the Audio Development Board is a 16/32-bit,
high-performance microcontroller (MCU). The clock requirement is met via the 8 MHz
external crystal oscillator (Y2). The device can be placed in Reset by activating the
RESET1 switch.
A debugger or programmer such as MPLAB ? REAL ICE? In-Circuit Emulator or ICD
3 can be used via the RJ-45 (J3) connector. The debugging interface is implemented
via the ICSP? protocol and the external debugger is connected to the ICSP socket
(J3).
? 2011 Microchip Technology Inc.
DS70662A-page 13
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