Texas Instruments SimpleLink CC3200 Wi-Fi Manuel utilisateur
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
3
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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
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Chapter 2
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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
5
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CC3200AUDBOOST
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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
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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
7
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Connecting to CC32000-LAUNCHXL
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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
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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
9
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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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