Datasheet

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EVM Overview

1 EVM Overview

1.1 Features

• Full-featured evaluation board for the TLV320ADC3101 stereo audio analog-to-digital converter (ADC)

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

• Dual onboard microphones and line inputs for ADC evaluation

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

circuits/input devices.

The TLV320ADC3101-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 (Windows 2000 or Windows XP™).

1.2 Introduction

The TLV320ADC3101EVM 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 TLV320ADC3101-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 system.

The TLV320ADC3101-K 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 provides interfaces for external control signals, audio data, and power. This allows for the

TLV320ADC3101 to be connected to the rest of a user development system.

2 EVM Description and Basics

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

connection of the TLV320ADC3101-K.

2.1 TLV320ADC3101-K Block Diagram

The TLV320ADC3101-K consists of two separate circuit boards, the USB-MODEVM and the

TLV320ADC3101EVM. 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 TLV320ADC3101EVM 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 TLV320ADC3101EVM 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

C, SPI™, I

S™, 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 TLV320ADC3101EVM is designed to fit over both of the smaller

evaluation module slots as shown in Figure 1.

SLAU267A–December 2008–Revised October 2012 TLV320ADC3101-K

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