Summary of Contents for Texas Instruments TLV320AIC23
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TLV320AIC23 EVM2 Evaluation Platform for the TLV320AIC23 Stereo Audio CODEC and TLV320DAC23 Stereo DAC User’s Guide February 2002 DAV Digital Audio/Speaker SLEU016...
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.
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 incorporating the goods.
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EVM schematic located in the EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Copyright 2002, Texas Instruments Incorporated Mailing Address: Texas Instruments Post Office Box 655303...
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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 –...
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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.
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.
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).
Theory of Operation This section provides a comprehensive description and explanation of the various features of the TLV320AIC23 EVM2. Topic Photographs of EVM ......... .
Figure 3–1. TLV320AIC23 EVM2 Parts Location Diagram Right Out Left Out Line Out Left In Headphone Line In Right In Parallel Port Connector Power Master CLKIN Digital I/O Master CLKOUT...
Master clock from onboard crystal Master clock supplied externally 3.3 TLV320AIC23 EVM2 Power The TLV320AIC23 EVM2 is powered by an external 5-Vdc power supply (not included) to a 2,5-mm mini power jack, PJ1. LED1 indicates when power is applied to the board.
3.6.3 Software Interface Connection A PC provides control of the TLV320AIC23 EVM2 via a software GUI called Rhino. A parallel port interface board, DAREF106, connects to the PC parallel port. A cable with miniDIN 8-pin connectors, included in the TLV320AIC23 EVM2 kit, connects the parallel port interface board to the EVM.
This section describes the use of the DASCCT_AIC23 software GUI interface to control the TLV320AIC23 EVM2 board. Pictures of the various interface panels are shown, and explanations of the control and display elements on each are provided. Topic DASCCT_AIC23 Installation .
4) Connect the analog input from a CD, DVD player, or any alternative analog source to the TLV320AIC23/DAC23 EVM2. 5) Connect the TLV320AIC23/DAC23 EVM2 to the speakers or headphones that will be used for listening. 6) Connect the parallel port interface card to the parallel port connector of the...
DASCCT_AIC23 Installation Figure 4–1. AIC23/DAC23 EVM2 Connection Diagram Audio Out Speakers Analog In C Connector AIC23/DAC23 EVM Parallel Port Parallel Port Interface Board CD Player Software...
4.4.2 AIC 23 and DAC 23 Radio Buttons These radio button allow selection of the device to be emulated by the TLV320AIC23 EVM2, the codec or the DAC. 4.4.3 Master and Slave Radio Buttons These radio buttons select the operating mode of the device.
4.4.4 Message Area Directly below the Master and Slave radio buttons on the left side of the main panel is a message area. Short text instructions to the operator, status indications, or error messages can appear in this box. A listing of possible error messages appears in Chapter 5, along with an explanation of the errors.
4.4.12 View Registers Button When the View Registers button is clicked, the GUI opens a second panel. This panel shows all the TLV320AIC23/DAC23 EVM2 registers. A function name is displayed for each bit in each register, and the values of the bits can be viewed or changed.
4.4.18 Clock Select Button Clicking the Clock Select button opens a panel that allows selection of master clock speed and ADC and DAC sampling rates (see Section 4.6.11). (Do clock selections correspond to sampling rate register bits?) 4.4.19 Frequency Display Areas In the lower right corner of the main panel are two frequency displays.
I2C Adjust 4.6 View Registers The registers panel, shown in Figure 4–4, displays the bits for 10 registers, where the user can either view or change the bit values. There is a Preset Modes section of the panel, which allows the user to call up any of three sets of default register settings.
L Vol (HeadPhone) Register 4.6.2 L Vol (Line Input) Register Address: 0000000 D4–D0 set the left line input volume. D8 sets simultaneous right/left volume/mute. D7 sets the left input mute. Setting the bit values in this register is functionally equivalent to operating the Line Input Volume Left controls on the main panel (see Section 4.4.5).
Power Down Register The Apply button sends the current bit values shown on the Analog Control panel to the Audio (Digital) register section of the register panel. The OK button performs the same function as the Apply button and simultaneously closes the register panel.
The Apply button sends the current bit values shown on the Analog Control panel to the Audio (Format) register section of the register panel. The OK button performs the same function as the Apply button and simultaneously closes the register panel. Figure 4–8.
Interface Activate Register Figure 4–9. Clock Setup 4.6.12 Interface Activate Register Address: 0001001 D0 activates the digital interface (0 = inactive, 1 = active). Clicking the Send Data button sends only the interface activation data without clicking the Apply button. 4-14...
The error messages are only visible during error conditions. The error messages are located just above the RESET button in the main panel. The first message to appear will be above the second message. For example, if an ACK error occurs first then it is displayed first and it is only displayed once. The software continues to send data to the device even with ACK and WAIT errors.
This chapter contains a list of the contents of the TLV320AIC23 EVM2 kit and a bill of materials for the TLV320AIC23 EVM2 board. Topic TLV320AIC23 EVM2 Kit Contents Bill of Materials ..........
6.1 TLV320AIC23 EVM2 Kit Contents TLV320AIC23 EVM2 is shipped with the following: 1) TLV320AIC23 EVM2 evaluation module 2) DAREF106R2 parallel port interface board 3) TLV320AIC23 EVM2 CD. The CD contains the following: a) TLV320AIC23 data manual b) TLV320AIC23 EVM2 user’s guide c) Schematic...
Appendix A Appendix A Circuit Card and Schematic This appendix contains the following items for the TLV320AIC23 EVM2, in the order listed: 1) Top silkscreen 2) Copper layer 1 3) Copper layer 2 4) Schematic diagram...
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