User manual

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:

• Power Supply

• Microcontroller

• Audio Codec, Microphone and Audio Connections

• PICtail™ Plus Connector

• TFT Display

• USB Connectivity

• UART Connectivity

• User LEDs and Switches

2.1 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.

2.2 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).

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.