Related Manuals for Texas Instruments TAS5001-5122C2EVM
Summary of Contents for Texas Instruments TAS5001-5122C2EVM
- Page 1 TAS5001-5122C2EVM Evaluation Module for the TAS5001 Digital Audio PWM Processor and the TAS5122DCA Digital Audio PWM Power Output Stage User’s Guide June 2004 DAV Digital Audio/Speaker SLEU055...
- Page 2 TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions:...
- Page 3 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 incorporating the goods.
- Page 4 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. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright 2004, Texas Instruments Incorporated...
- Page 5 Preface Read This First About This Manual This manual describes the operation of the TAS5001−5122C2EVM evaluation module from Texas Instruments. How to Use This Manual This document contains the following chapters: Chapter 1 – Overview Chapter 2 – Detailed Description of the EVM Board Chapter 3 –...
- Page 6 Trademarks Equibit and PurePath Digital are trademarks of Texas Instruments.
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Page 7: Table Of Contents
Contents Contents Introduction ..............TAS5001−5122C2EVM Features . - Page 8 Contents Figures 1−1 Simplified TAS5001−5122C2EVM Block Diagram ....... . . 2−1 Board Outline With Connectors, Switches, Jumpers, and Indicators .
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Page 9: Introduction
The TAS5122DCA PurePath Digital customer evaluation module demonstrates two integrated circuits (IC), the TAS5001 and the TAS5122DCA from Texas Instruments. The TAS5001 is a high performance 24-bit stereo digital modulator based on Equibit technology. This IC converts input PCM serial digital audio data to a pulse width modulated (PWM) audio data stream. -
Page 10: Tas5001−5122C2Evm Features
DAP control through PC software (DCT software from Texas Instruments) Default DAP settings is downloaded to an EEPROM with the DCT software Analog line input (use internal analog-to-digital converter in DAP) Analog line output (use internal digital-to-analog converter in DAP) Figure 1−1. - Page 11 TAS5001−5122C2EVM Features The TAS3002 IC from Texas Instruments is used as digital audio processor (DAP). All features in the DAP can be controlled through the I S interface. Adjustment of the sound level can be executed through the I C bus and with two push buttons on the EVM board.
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Page 13: Detailed Description Of The Evm
Chapter 2 Detailed Description of the EVM This chapter describes the TAS5001−5122C2EVM board in regards to board layout, jumpers, switches, buttons, and connectors. Topic Page Board Overview ..........Description of Jumper Settings . -
Page 14: Board Overview
Board Overview 2.1 Board Overview Figure 2−1. Board Outline With Connectors, Switches, Jumpers, and Indicators PSU Connector S/PDIF Digital Audio J600 J100 Coaxial/RCA Input S620 Coaxial J540 Switch between Optical RESET S/PDIF ERROR and Coaxial input ENABLE SAMPLE RATE CONTROL Optical S/PDIF Digital Audio J101... -
Page 15: Description Of Jumper Settings
Description of Jumper Settings 2.2 Description of Jumper Settings There are three jumpers on the EVM board (J400 is an I S interface) 2.2.1 Double−Speed Control (JMP120) JMP120 is used to set the double-speed pin at TAS5001 (DBSPD, pin 39). The TAS5001 is operating in single-speed mode if the DBSPD pin is asserted low and in double-speed if it is asserted high. -
Page 16: Default Jumper Positioins
Default Jumper Positioins 2.3 Default Jumper Positioins Default jumper positions are marked with a grey rectangle in Figure 2−3. Figure 2−3. Default Jumper Positions J600 J100 J540 JMP130 JMP120 J101 J541 − J170 J160 J580 JMP360 J300 J581 − 2.4 Description of Connectors 2.4.1 S/PDIF Digital Audio Coaxial/RCA Input (J100) The RCA connector can be connected to a digital S/PDIF source through a... -
Page 17: Pc And I2 C Interface (J300)
Description of Connectors Table 2−1. Description of J160 and J170 Pin No. Description Analog Input Connector (J160) Left Channel Input Ground Right Channel Input Analog Output Connector (J170) Left Channel output Ground Right Channel Output 2.4.4 PC and I C Interface (J300) The PC interface using the attached special cable to parallel/printer port on the PC. -
Page 18: Loudspeaker Connectors (J540, J541, J580, And J581)
Description of Connectors 2.4.5 Loudspeaker Connectors (J540, J541, J580, and J581) All speaker connectors accept standard 4 mm plugs. Use of high quality plugs and speaker cable are recommended. Table 2−3. Description of Loudspeaker Connectors Reference Designator Description J540 Left speaker positive output terminal J541 Left speaker negative output terminal J580... -
Page 19: Description Of Switches And Buttons
Description of Switches and Buttons 2.5 Description of Switches and Buttons 2.5.1 S/PDIF Input Selector Switch (S100) S100 switches between optical and coaxial S/PDIF input. When the lever is pressed in the direction of J101, the optical S/PDIF input is selected. When the lever is pressed in the direction of J100, the coaxial S/PDIF input is selected. -
Page 20: Description Of Indicators
Description of Indicators 2.6 Description of Indicators 2.6.1 Power LED (LED223) The green LED indicates that the control circuitry at the TAS5001− 5122C2EVM board is powered on. 2.6.2 No S/PDIF Input LED (LED222) The yellow LED indicates that the S/PDIF input signal is missing or it does not contain valid audio data. -
Page 21: Evm Board Operation
..........Setup the TAS5001-5122C2EVM With the S/PDIF Input ... Setup the TAS5001-5122C2EVM With the Analog Line Input ..Interfacing the Analog Line Output . -
Page 22: Power Supply
Power Supply 3.1 Power Supply The TAS5001−5122C2EVM can be powered from one or two external power supplies. High-end audio performance requires a stabilized power supply with low ripple voltage and low output impedance. Note: The length of the power supply cable must be minimized. Increasing the length of the PSU cable is equal to increasing the distortion for the amplifier at high output levels and low frequencies. -
Page 23: Setup The Tas5001−5122C2Evm With The S/Pdif Input
Setup the TAS5001−5122C2EVM With the S/PDIF Input 3.2 Setup the TAS5001−5122C2EVM With the S/PDIF Input Connect the EVM board as shown in Figure 3−2. Select between coaxial or optical input signal at the input selector switch (S100). Press the lever at S320 in the direction of U360 if the TAS3002 DAP is wanted in the signal path (recommended during normal listening tests). -
Page 24: Start-Up Sequence
Setup the TAS5001−5122C2EVM With the Analog Line Input 3.2.1 Start-up Sequence 1) Turn on the power supply/supplies. Follow the power-up and power-down sequence described in the Power Supply section. Observe that the green Power ON LED and the yellow No S/PDIF LED are lit. 2) Run the DCT software from the PC desktop if the DAP is activated (S320) and the attached cable is connected from J300 to the PC. -
Page 25: Hints For Measurement Of Performance
Chapter 4 Hints for Measurement of Performance Read the Digital Audio Measurements application note (SLAA114) for an introduction to measurements on true digital audio amplifiers. You are welcome to use the audio precision test files available on the PurePath Digital amplifier CD−ROM. Note that an AES17 filter is required to reach the shown measurements. - Page 27 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments TAS5001-5122C2EVM...
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