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Summary of Contents for Texas Instruments PurePath CC85XXDK
- Page 1 CC85XXDK-HEADSET User’s Guide SWRU281...
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Page 2: Table Of Contents
www.ti.com SWRU281A Table of Contents INTRODUCTION ........................3 ABOUT THIS MANUAL ......................3 ABBREVATIONS ........................4 PUREPATH WIRELESS HEADSET KIT OVERVIEW ............5 GETTING STARTED WITH THE PUREPATH WIRELESS HEADSET KIT ......7 HARDWARE OVERVIEW ...................... 9 TLV320AIC3204 CODEC ....................10 POWER SUPPLY AND CHARGING OF LI-ION BATTERY ........... -
Page 3: Introduction
Further information and support can be found on the TI LPRF Online Community [12]. Also see chapter 7 for a list of additional relevant documents and links. Texas Instruments differentiates between the applications “headset” and “headphone”, the first being bidirectional with both headphones and microphone, and the latter being unidirectional with audio streaming in only one direction (no microphone). -
Page 4: Abbrevations
www.ti.com SWRU281A 3 Abbrevations Digital-to-Analog Converter Human Interface Device Inter-Integrated Circuit Industrial, Scientific and Medical Low-Dropout Regulator Light Emitting Diode Low-Noise Amplifier Power Amplifier Printed Circuit Board Signal-to-Noise Ratio System-on-Chip THD+N Total Harmonic Distortion + Noise Universal Serial Bus Page 4 of 20... -
Page 5: Purepath Wireless Headset Kit Overview
www.ti.com SWRU281A 4 PurePath Wireless Headset Kit Overview The main purpose of the PurePath Wireless Headset Kit is letting the user evaluate complete headphone and headset functionality with the CC85xx devices. The CC85xx Headset board is a low cost and low power reference design for a state-of-the-art wireless headphone/headset. The kit can also be used to demonstrate simple cable replacement applications. - Page 6 www.ti.com SWRU281A • 1 USB micro cable for charging the Li-ion battery and for powering the CC85xx Headset boards. • 1 audio cable (3.5mm jack to 3.5mm jack) to be used at the analog input. • Documentation Page 6 of 20...
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Page 7: Getting Started With The Purepath Wireless Headset Kit
www.ti.com SWRU281A 5 Getting Started With the PurePath Wireless Headset Kit The CC85xx Headset boards are pre-programmed in production. This pre-programmed firmware can be found in the example project “CC85XXDK-HEADSET Preloaded Demo” in the PurePath Wireless Configurator [4]. The boards are labeled with MASTER and SLAVE stickers, and instructions on how to pair them and start the audio streaming can be found in the CC85XXDK- HEADSET Quick Start Guide [2]. - Page 8 www.ti.com SWRU281A • Maximum latency (2048 samples i.e. 46.44 ms with the 44.1 kHz sample rate) • Optimized codec register settings in order to lower the power consumption • Volume control on the slave using the UP and DOWN positions on the slave rocker switch •...
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Page 9: Hardware Overview
www.ti.com SWRU281A Figure 4 Screen shot of the PurePath Wireless Configurator. 6 Hardware Overview This section describes each block of the CC85xx Headset board. A simplified block diagram of the CC85xx Headset board is shown in Figure 5. 3.7V 3.7V Li-Ion battery (465mAh) BQ25015 VBUS (5V) -
Page 10: Tlv320Aic3204 Codec
SWRU281A 6.1 TLV320AIC3204 Codec The codec on the CC85xx Headset board is the TLV320AIC3204 [3] from Texas Instruments Inc. The TLV320AIC3204 is a stereo codec that supports six single-ended or 3 fully differential inputs. On the CC85xx Headset board two input pins are used in single ended configuration (IN1L and IN1R). -
Page 11: Buttons And Leds
www.ti.com SWRU281A 6.4 Buttons and LEDs On the CC85xx Headset board there is a rocker switch and 2 LEDs to be used for “human interaction”. This switch actually has 5 positions i.e. IN, UP, DOWN, HALFWAY UP and HALFWAY DOWN, but the positions HALFWAY UP and HALFWAY DOWN are not in use. This can also be seen from the schematic (Appendix A). -
Page 12: Programming Connector
www.ti.com SWRU281A Figure 6. Photo of the CC85xx headset board connected to a 50ohm micro coax cable. 6.6 Programming Connector The Programming connector (see Figure 2) labeled DEBUG is used to program the CC85xx using the CC Debugger. The pin-out of the programming interface is listed in Table 2. Figure 3 shows how to connect the CC Debugger to the CC85xx Headset board. - Page 13 www.ti.com SWRU281A Table 3: Test signals (P7) Test pad Signal number MCLK WCLK BCLK DOUT CODEC_RESET I2C_SCL I2C_SDA Page 13 of 20...
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Page 14: References
BQ25015 Product folder: http://focus.ti.com/docs/prod/folders/print/bq25015.html CC2590 Product page http://focus.ti.com/docs/prod/folders/print/cc2590.html [10] CC85XXDK-HEADSET product page http://focus.ti.com/docs/toolsw/folders/print/cc85xxdk-headset.html [11] CC85XXDK-HEADSET reference design page http://focus.ti.com/docs/toolsw/folders/print/cc85xxem-rd.html [12] Texas Instruments Low Power RF forum http://www.ti.com/lprf-forum [13] Texas Instruments Support http://support.ti.com [14] BQ25015 Datasheet http://focus.ti.com/lit/ds/symlink/bq25015.pdf Page 14 of 20... -
Page 15: Document History
www.ti.com SWRU281A 8 Document History Revision Date Description/Changes 2011-03-31 Initial release Page 15 of 20... -
Page 16: Appendix A: Cc85Xx Headset Schematic
www.ti.com SWRU281A Appendix A: CC85xx Headset Schematic Page 16 of 20... - Page 17 www.ti.com SWRU281A Page 17 of 20...
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Page 20: Appendix B: Cc85Xx Headset Components Placement
www.ti.com SWRU281A Appendix B: CC85xx Headset Components Placement Page 20 of 20... - Page 21 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
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