SCAS290 datasheet(3/53 Pages) TI

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EVM Overview

1.1

Features

•

Full-featured evaluation board for the TLV320AIC3204 stereo audio codec.

•

USB connection to PC provides power, control, and streaming audio data for easy evaluation.

•

Onboard microphone for ADC evaluation

•

Connection points for external control and digital audio signals for quick connection to other

circuits/input devices.

The TLV320AIC3204EVM-K is a complete evaluation kit, which includes a universal serial bus (USB)-

based motherboard and evaluation software for use with a personal computer running the Microsoft

Windows® operating system (Win2000 or XP).

1.2

Introduction

The TLV320AIC3204EVM is in the Texas Instruments (TI) modular EVM form factor, which allows direct

evaluation of the device performance and operating characteristics and eases software development and

system prototyping.

The TLV320AIC3204EVM-K is a complete evaluation/demonstration kit, which includes a USB-based

motherboard called the USB-MODEVM Interface board and evaluation software for use with a personal

computer (PC) running the Microsoft Windows operating systems.

The TLV320AIC3204EVM is operational with one USB cable connection to a PC. The USB connection

provides power, control, and streaming audio data to the EVM for reduced setup and configuration. The

EVM also allows external control signals, audio data, and power for advanced operation, which allows

prototyping and connection to the rest of the development or system evaluation.

EVM Description and Basics

This section provides information on the analog input and output, digital control, power, and general

connection of the TLV320AIC3204EVM.

2.1

TLV320AIC3204EVM-K Block Diagram

The TLV320AIC3204EVM-K consists of two separate circuit boards, the USB-MODEVM and the

TLV320AIC3204EVM. The USB-MODEVM is built around the TAS1020B streaming audio USB controller

with an 8051-based core. The motherboard features two positions for modular EVMs, or one double-wide

serial modular EVM can be installed. The TLV320AIC3204EVM is one of the double-wide modular EVMs

that is designed to work with the USB-MODEVM.

The simple diagram of Figure 1 shows how the TLV320AIC3204EVM is connected to the USB-MODEVM.

The USB-MODEVM Interface board is intended to be used in USB mode, where control of the installed

EVM is accomplished using the onboard USB controller device. Provision is made, however, for driving all

the data buses ( I

2C™, SPI™, I2S, etc.) externally. The source of these signals is controlled by SW2 on

the USB-MODEVM. See Table 1 for details on the switch settings.

The USB-MODEVM has two EVM positions that allow for the connection of two small evaluation module

or one larger evaluation module. The TLV320AIC3204EVM is designed to fit over both of the smaller

evaluation module slots as shown in Figure 1

SLAU266A – October 2008 – Revised October 2012

TLV320AIC3204EVM-K

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