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User’s Guide
February 2002 DAV Digital Audio/Speaker
SLEU016
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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. All products are sold subject to TI’s terms and conditions of sale supplied at the t
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EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety measures typically found in the end product
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EVM WARNINGS AND RESTRICTIONS It is important to operate this EVM within the input voltage range of 0–1.5 V and the output voltage range of 0 V and 3.6 V. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions concerning the input range, please contact a TI field representative prior to connecting the input power. Applying loads outside of the specified output range may result in unintended operation and/or possible perman
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Related Documentation From Texas Instruments Preface Read This First About This Manual This user’s guide describes the setup and operation of the TLV320AIC23 EVM2 evaluation platform, and installation and operation of the DASCCT_AIC23 software that drives the EVM. How to Use This Manual This document contains the following chapters: Chapter 1 – Introduction Chapter 2 – Quick Start-Up Chapter 3 – Theory of Operation Chapter 4 – Software 2 Chapter 5 – I C Error Messages Chapter 6 – Kit Contents A
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Trademarks J of part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this equipment in other environments may cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may be required to correct this interference. Trademarks Windows is a trademark of Microsoft Corporation. All other trademarks are the property of their respective owners. vi
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Contents Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 2 Quick Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 3 Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.1 Photographs of EVM
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Contents 4.4.16 Format Control Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 4.4.17 Normal Mode and USB Mode Radio Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 4.4.18 Clock Select Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7 4.4.19 Frequency Display Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
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Chapter 1 Introduction The TLV320AIC23 EVM2 is designed to demonstrate the TLV320AIC23 codec or TLV320DAC23 DAC. With the use of the DAREF106R2 parallel port interface board, the user can control the EVM with a PC. The supplied software allows the user to change items such as volume, sample rate, power-down modes, and audio format on the fly. The user can also change the path of the audio using the GUI. The user can view all the registers and their values and change the values using the GUI. T
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1-2
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Chapter 2 Quick Start-Up This section explains to the user how to set up the TLV320AIC23 EVM2 quickly and hear audio using digital loopback. 1) Set the jumpers for the appropriate conditions as explained in Section 3.2 2) Power up the AIC23 (PJ1) per Section 3.3 3) Connect audio source (e.g., CD player) LINEIN (J1). 4) Connect speaker or headphone to J4. 5) Connect the parallel port interface board to the PC parallel port and, via the supplied cable, the miniDIN 8-pin jack, J5. 6) Run DASCCT_A
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2-2
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Chapter 3 Theory of Operation This section provides a comprehensive description and explanation of the various features of the TLV320AIC23 EVM2. Topic Page 3.1 Photographs of EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 3.2 Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 3.3 TLV320AIC23 EVM2 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 3.4 Analog
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Figure 3–1. TLV320AIC23 EVM2 Parts Location Diagram Right Out Left Out MIc Line Out J2R J2L Left In J1L J3 J2 J1 Headphone Line In U1 J4 Y1 Right In J1R Parallel PJ1 Port Connector 2 Power I C J5 J7 Master CLKIN Digital I/O Master CLKOUT 3-2
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Photographs of EVM 3.1 Photographs of EVM Figure 3–2. TLV320AIC23 EVM2 Top View Theory of Operation 3-3
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Photographs of EVM Figure 3–3. TLV320AIC23 EVM2 Bottom View 3-4
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Photographs of EVM Figure 3–4. Parallel Port Interface Board Top View Figure 3–5. Parallel Port Interface Board Bottom View Theory of Operation 3-5
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Jumper Settings 3.2 Jumper Settings There are two jumpers on the EVM. JP1 is used to select the communication mode of the EVM. Position 1–2 2 sets the mode for SPI. Position 2–3 sets the mode for I C. The GUI 2 software was developed for I C communication. For SPI the end-user needs to create the necessary code. Signals needed for SPI are available on the EVM. JP2 is used to select or deselect the onboard crystal for MASTER CLOCK. Choose one of the following jumper configurations before appl
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Digital I/O 3.5 Digital I/O A protected header, J7, is available for interfacing with external digital I/O. Two power sources, 5 V and 3.3 V, are available on J7 for powering external boards. The 5-V power is tapped directly off PJ1. The 3.3-V power can supply up to 100 mA. Signal J7 5v_DIO (5.0 VDC) 1, 2 VCC_DIO (3.0 VDC) 5, 6 DIN 9 DOUT 11 BCLK 13 LRCIN 15 LRCOUT 17 MCLK 19 DIGITAL GROUND 3, 4, 7, 8, 10, 12, 14, 16, 18, 20 3.6 TLV320AIC23 EVM2 Features 3.6.1 Master Clock The master clock can b
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3-8
