Texas Instruments SimpleLink CC3200 Wi-Fi Manuale utente

CC3200 SimpleLink™ Wi-Fi® and IoT Solution,

A SingleChip Wireless MCU - Audio

BoosterPack

User's Guide

Literature Number: SWRU383

September 2014

Contents

1 Getting Started .................................................................................................................... 4

1.1 Introduction ................................................................................................................... 4

1.2 Key Features ................................................................................................................ 4

1.3 What’s Included.............................................................................................................. 4

2 Hardware Overview .............................................................................................................. 5

2.1 CC3200AUDBOOST ........................................................................................................ 5

2.1.1 20 Pins headers ( P1, P2, P3, P4) ............................................................................... 5

2.1.2 Mono and Stereo Jacks............................................................................................ 6

2.1.3 On-Board MIC....................................................................................................... 6

2.1.4 Terminal Blocks (U4)............................................................................................... 6

2.2 Power Amplifier .............................................................................................................. 6

2.3 Connecting to CC32000-LAUNCHXL..................................................................................... 7

2.3.1 Configuration required on CC3200-LAUNCHXL................................................................ 7

2.3.2 Connecting to CC3200-LAUNCHXL.............................................................................. 8

2.3.3 Software Examples................................................................................................. 9

3 Additional Resources.......................................................................................................... 10

3.1 Schematic and Board files ................................................................................................ 10

3.2 CC3200AUDBOOST Wiki................................................................................................. 10

3.3 The Community............................................................................................................. 10

2Contents SWRU383–September 2014

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List of Figures

1-1. CC3200AUDBOOST ........................................................................................................ 4

2-1. CC3200AUDBOOST Board's Interfaces.................................................................................. 5

2-2. CC3200-LAUNCHXL Configuration ....................................................................................... 7

2-3. Connecting to CC3200-LAUNCHXL....................................................................................... 8

2-4. Connected Boards........................................................................................................... 8

2-5. Connect to Android Device................................................................................................. 9

List of Tables

2-1. Default I2C Address......................................................................................................... 5

SWRU383–September 2014 List of Figures

Chapter 1

SWRU383–September 2014

Getting Started

1.1 Introduction

The SimpleLink™ Wi-Fi® CC3200 Audio BoosterPack (CC3200AUDBOOST) enables the evaluation and

development with the digital audio peripheral [I2S] present on the SimpleLink Wi-Fi CC3200 device. This

BoosterPack can be used with the SimpleLink Wi-Fi CC3200 Launchpad (CC3200-LAUNCHXL) Version

3.2 & higher. The BoosterPack contains a Class-D power amplifier to drive the speakers and an ultra-low

power audio codec, TLV320AIC3254, which supports programmable audio processing. Speakers,

headsets, and microphones are sold separately. Sample application in SDK requires two CC3200

LaunchPads and CC3200AUDBOOST kits. Applications include: Wi-Fi speakers, doorbell, baby monitor,

Wi-Fi headsets, Wi-Fi audio streaming, and walkie-talkies.

1.2 Key Features

• TLV320AIC3254, Ultra Low Power Stereo Audio Codec

• TPA2012D2, 2.1 W/CH Stereo Filter-Free Class-D Audio Power Amplifier

• 3.5 mm Mono Jack

• 3.5 mm Stereo Jack IN

• 3.5 mm Stereo Jack Out

• On-board MIC

• Terminal blocks to connect external amplifiers

• No on-board LDO. Once the CC3200AUDBOOST and the CC3200-LAUNCHXL are connected, the

CC3200-LAUNCHXL sources power to the CC3200AUDBOOST. Specifically, the CC3200-LAUNCHXL

provides power to the audio codec and the power amplifier on the CC3200AUDBOOST

1.3 What’s Included

• CC3200AUDBOOST

• Quick Start guide

Figure 1-1. CC3200AUDBOOST

4Getting Started SWRU383–September 2014

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Chapter 2

SWRU383–September 2014

Hardware Overview

2.1 CC3200AUDBOOST

The CC3200AUDBOOST is a BoosterPack board with several connectors which allow the user to

demonstrate the audio capability of the CC3200 device, present on the CC3200-LAUNCHXL board. Those

connectors are described below.

Figure 2-1. CC3200AUDBOOST Board's Interfaces

2.1.1 20 Pins headers ( P1, P2, P3, P4)

The 2x10 pin Launchpad headers (P1, P2, P3, P4) connect the CC3200AUDBOOST board to the

CC3200-LAUNCHXL. The headers provide the necessary interface to power up the audio boosterpack

(CC3200AUDBOOST) and access the I2C lines on the CC3200-LAUNCHXL board. While connecting to

the CC3200-LAUNCHXL, ensure that the white triangle at P1 matches with the CC3200-LAUNCHXL.

2.1.1.1 Power Connector

The CC3200AUDBOOST board is powered from 3.3 V sourced from the Launchpad. No special care is

needed when the Launchpad board is powered from the USB supply, but when powered from a 2xAA

battery, ensure that the battery does not drop below 2.6 V.

2.1.1.2 I2C Connections

The I2C lines are connected, by default, to the launchpad through the 20 pin connector. The default I2C

address on the on-board audio codec is given in Table 2-1.

Table 2-1. Default I2C Address

Part Ref Part Number Slave Address

Audio Codec U3 TLV320AIC3254 0x30

SWRU383–September 2014 Hardware Overview

CC3200AUDBOOST

www.ti.com

2.1.2 Mono and Stereo Jacks

• The stereo jack IN (J3) is a 3.5 mm audio jack connecting to an audio source.

• The stereo jack OUT (J4) is a 3.5 mm jack connecting to a headphone or speaker.

• The mono audio jack IN (J5) is a 3.5 mm audio jack connecting to an audio source.

2.1.3 On-Board MIC

The on-board MIC (U6) allows the audio boosterpack to be used as a microphone emulator. The used on-

board MIC is CMC-2242PBL-A.

2.1.4 Terminal Blocks (U4)

The CC3200AUDBOOST can be connected to external amplifiers via the terminal block (U4).

2.2 Power Amplifier

The on-board amplifier has gain select pins G1 (MSB) and G0 (LSB). The max gain supported with the

on-board amplifier is 18dB.

G1 (MSB) G0 (LSB) Gain

0 0 6dB

1 0 18dB

6Hardware Overview SWRU383–September 2014

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Connecting to CC32000-LAUNCHXL

2.3 Connecting to CC32000-LAUNCHXL

2.3.1 Configuration required on CC3200-LAUNCHXL

No changes are required. CC3200AUDBOOST should be connected to CC3200-LAUNCHXL with the

default configurations. Ensure the following:

1. Once the binaries are flashed, remove jumper J15 on SOP2 of the CC3200-LAUNCHXL, and reset the

board (refer to the green circle in Figure 2-2).

2. Jumpers J2 and J3 should be closed (refer to the blue circle in Figure 2-2).

Figure 2-2. CC3200-LAUNCHXL Configuration

SWRU383–September 2014 Hardware Overview

Connecting to CC32000-LAUNCHXL

www.ti.com

2.3.2 Connecting to CC3200-LAUNCHXL

The CC3200AUDBOOST board can be directly mated with a CC3200-LAUNCHXL by using two 2x10 pin

header connectors. A white triangle marked on the board (shown in the green circle) indicates the pin-1 (of

P1) that must be aligned with the triangle on the CC3200-LAUNCHXL (pin 1 of P1). Failure to align the

boards correctly before power-up can damage the boards. The correctly connected boards are shown in

Figure 2-3.

Figure 2-3. Connecting to CC3200-LAUNCHXL

Figure 2-4. Connected Boards

8Hardware Overview SWRU383–September 2014

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Connecting to CC32000-LAUNCHXL

2.3.3 Software Examples

This link provides an example that demonstrates a bi-directional audio application on a CC3200-

LAUNCHXL+CC3200AUDBOOST setup. The setup comprises of two CC3200-LAUNCHXL in station

(STA) mode. The audio is streamed over Wi-Fi from one CC3200-LAUNCHXL and rendered on another.

• Hardware prerequisites:

– 2x CC3200-LAUNCHXL 3.2 or above

– 2x CC3200AUDBOOST 3.0-A

– 2x Headphones/speakers

– 2x Audio sources

– Android / iOS device (for Smart Config)

– Access point

• Software Prerequisites:

–CC3200 SDK

–Uniflash Tool

–Smart Config Android application

Figure 2-5. Connect to Android Device

SWRU383–September 2014 Hardware Overview

Chapter 3

SWRU383–September 2014

Additional Resources

3.1 Schematic and Board files

The latest design files, which include the gerber files, schematic, bill of materials, PCB layout, and

assembly drawings, can be obtained from http://www.ti.com/tool/tidc-cc3200audboost.

3.2 CC3200AUDBOOST Wiki

Visit the following wiki page for an example application:

http://processors.wiki.ti.com/index.php/CC32xx_Wifi_Audio_Application

3.3 The Community

Search the forums at e2e.ti.com. If you cannot find your answer, post your question to the community.

10 Additional Resources SWRU383–September 2014

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