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User's Guide

SLOU232A – January 2009 – Revised January 2009

TAS5708(TAS5710)EVM

This manual describes the operation of the TAS5708(TAS5710)EVM to evaluate the performance of the

TAS5708/10. The main contents of this document are:

• Details on how to properly connect a TAS5708/10 Evaluation Module (EVM) and the details of the

EVM.

• Details on how to install and use the GUI to program the TAS5708/10.

• Details on how to use the audio processing features like EQ and DRC.

• Quick-Start Guide for the common modes in which TAS5708/10 EVM can be used.

Contents

1 Overview ...................................................................................................................... 3

1.1 TAS5708(TAS5710)EVM and MC57xxPSIA Features......................................................... 3

2 Installation .................................................................................................................... 4

2.1 EVM Installation ..................................................................................................... 4

2.2 Software Installation ................................................................................................ 7

3 Using the EVM Software .................................................................................................... 9

3.1 Connect the GUI to the EVM ...................................................................................... 9

3.2 I2C Memory Tool ................................................................................................... 9

3.3 Volume Function .................................................................................................. 10

3.4 Biquad GUI ......................................................................................................... 10

3.5 DRC GUI ........................................................................................................... 11

4 MODULATION SCHEME ................................................................................................. 12

4.1 2 X BTL BDAD (Default: BD mode) ............................................................................. 13

5 Advanced Audio Processing Features in TAS5710 ................................................................... 13

6 Jumpers and Control Utilities on MC57xxPSIA board ................................................................. 15

6.1 RCA/OPTICAL Jumpers .......................................................................................... 15

6.2 Switches ............................................................................................................ 15

6.3 LED Indicators ..................................................................................................... 15

7 Board Layouts, Bill of Materials, and Schematic ...................................................................... 16

7.1 TAS5708(TAS5710)EVM and MC57xxPSIA Board Layouts ................................................ 16

7.2 Bill of Materials .................................................................................................... 18

7.3 Schematic .......................................................................................................... 20

List of Figures

1 TAS5708(TAS5710)EVM Printed-Circuit Board ......................................................................... 3

2 Complete System and EVM Signal Path Overview ..................................................................... 3

3 General Connection Picture ................................................................................................ 4

4 Connecting TAS5708(TAS5710)EVM to MC57xxPSIA ................................................................. 5

5 BTL Connection .............................................................................................................. 6

6 Process Flow for TAS5708 UG ............................................................................................ 8

7 Process Flow for TAS5710 UG ............................................................................................ 8

8 Memory Tool Window ....................................................................................................... 9

9 Volume Control ............................................................................................................. 10

10 Selecting Biquad GUI ...................................................................................................... 10

11 Filter Creation Tool Window .............................................................................................. 11

Equibit is a trademark of Texas Instruments.

C is a trademark of Philips Corporation.

SLOU232A – January 2009 – Revised January 2009 TAS5708(TAS5710)EVM 1

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Summary of content (25 pages)

PAGE 1
User's Guide SLOU232A – January 2009 – Revised January 2009 TAS5708(TAS5710)EVM This manual describes the operation of the TAS5708(TAS5710)EVM to evaluate the performance of the TAS5708/10. The main contents of this document are: • Details on how to properly connect a TAS5708/10 Evaluation Module (EVM) and the details of the EVM. • Details on how to install and use the GUI to program the TAS5708/10. • Details on how to use the audio processing features like EQ and DRC.
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www.ti.com 12 13 14 15 16 17 DRC Parameters ........................................................................................................... Activating the DRC GUI ................................................................................................... Time Constants Button .................................................................................................... TAS5708(TAS5710)EVM Top Composite Assembly ..................................................................
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Overview www.ti.com 1 Overview The TAS5708/10 evaluation module (EVM) demonstrates the TAS5708/10 device from Texas Instruments. The TAS5708/10 combines a high-performance PWM processor with a class-D audio power amplifier. This EVM can be configured with two bridge-tied loads (BTL) (2.0). For detailed information about the TAS5708/10 device, review the device data sheet (SLOS570). The Pulse Width Modulator (PWM) is based on TI's Equibit™ technology.
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Installation 2 www.ti.com Installation This section describes the EVM and software installation. 2.1 EVM Installation Analog In to ADC MC57xxPSIA Controller Board 5 V Supply for System Power Coaxial SPDIF Input Speaker Out A & B Optical SPDIF Input Speaker Out C & D USB Port 10 V–26 V Supply for Output Power Figure 3. General Connection Picture The following are the basic tools for the initial EVM power up.
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Installation www.ti.com Figure 4. Connecting TAS5708(TAS5710)EVM to MC57xxPSIA 2.1.2 PSU Interface The TAS5708(TAS5710)EVM is powered by two power supplies connected to the MC57xx controller board: a 5-V power supply (VIN) and a 10-V to 26-V (PVCC) power supply. The 3.3-V level is generated on the board by a voltage regulator from the 5-V supply. Note: The power-supply cable length must be minimized.
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Installation 2.1.3 www.ti.com Loudspeaker Connectors CAUTION All speaker outputs are biased at Vcc/2 and must not be connected to ground (e.g., through an oscilloscope ground). Loudspeaker connections vary by device setup. Consult the quick-start guide (Section 4) for more details. However, the following is a general guideline: When connecting a speaker in BTL mode, connect the speaker’s two terminals (A&B or C&D) across two outputs on the TAS5708(TAS5710)EVM.
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www.ti.com Installation defaults to 48 kHz when no signal is on the SPDIF input terminals. A 12-MHz crystal is installed on the MC57xxPSIA board. The ADC is an additional feature of this board to provide flexibility in sourcing an audio signal to the TAS5708/10. Review the PCM1808 data sheet (SLES177) for a detailed description of the ADC on this EVM. Install the jumper on JP4 across the middle pin and the pin marked ADC to select ADC as the source for SDIN1. 2.1.
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Installation www.ti.com Figure 6. Process Flow for TAS5708 UG Figure 7.
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Using the EVM Software www.ti.com 3 Using the EVM Software 3.1 Connect the GUI to the EVM Once the properties window selections have been made, go to the menu Target → Connect. This sends the initialization commands to the device. Master volume is in mute. Select the master volume function. Type the required volume in the properties window. For TAS5708/10, type –12 dB. The difference is due to the power stage gain in both devices. At this time, audio, if connected properly, plays through the device.
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Using the EVM Software 3.3 www.ti.com Volume Function Individual and Master volume can be selected, and the required volume value can be entered by typing on the Property Window after selecting the function with the mouse (see Figure 9). Figure 9. Volume Control 3.4 Biquad GUI Using the right button of mouse, select Biquad GUI (Figure 10). Figure 10.
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Using the EVM Software www.ti.com Figure 11. Filter Creation Tool Window A check-mark selects the Biquad. If not selected, the Biquad is in ALL PASS Mode. Frequency response for the current settings can be viewed and adjusted in Frequency Response Window Tab (Figure 11). Individual Biquad Gains must be within ±12 db. The command Apply from the filter data window sends all three banks of coefficients (providing auto bank is enabled). 3.5 DRC GUI Clicking on the function selects DRC GUI (Figure 12).
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MODULATION SCHEME www.ti.com Next, using the right button of the mouse, select Activate DRC GUI (Figure 13). Figure 13. Activating the DRC GUI Set the compression ratio to a value between 1 and 50. The offset has a range at ±6 dB. A value of 0 is illegal. If no offset is required, set the offset to 0. Offset is generally not required in a DRC application because is just provides a gain. Threshold is selected with a value of 0 to –72 dB. Figure 14.
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Advanced Audio Processing Features in TAS5710 www.ti.com Common Configurations: 1. 2 × BTL BD Mode 2. 2 × BTL AD Mode Note: AD : AD Modulation-Outputs are 180° out of phase BD : BD Modulation BTL : Bridge-Tied Load 4.1 2 X BTL BDAD (Default: BD mode) 1. Set up the hardware. 2. GDE: Select the Input MUX. In the Properties window, select Modulation scheme as BD for BD Mode. For AD Mode, select AD. 3. GDE: Target > Connect. 4.
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Advanced Audio Processing Features in TAS5710 www.ti.com Biquads and mixers can be adjusted to fine-tune 3D. 2. Bass Boost (Pseudo Bass): ON/OFF (L+R)/2 signal is low-pass filtered to get the bass signal and then applied a boost before mixing with L and R channels. 3. Two-Band DRC (2-Band DRC): ON/OFF L and R signals are split into two paths: one path with high-frequency and components (high pass) and the other with low-frequency components (low pass).
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Jumpers and Control Utilities on MC57xxPSIA board www.ti.com Both DRC can be programmed separately. 6 Jumpers and Control Utilities on MC57xxPSIA board 6.1 RCA/OPTICAL Jumpers Select the jumper to reflect the source whether it is RCA or OPTICAL. 6.2 Switches Reset is an active-low function. Pressing the master reset switch (S2) resets the TAS5708/10 device; pressing USB RESET (S1) resets the USB bus.
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Board Layouts, Bill of Materials, and Schematic www.ti.com 7 Board Layouts, Bill of Materials, and Schematic 7.1 TAS5708(TAS5710)EVM and MC57xxPSIA Board Layouts Figure 15.
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Board Layouts, Bill of Materials, and Schematic www.ti.com Figure 16. TAS5708(TAS5710)EVM Top Copper Assembly Figure 17.
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Board Layouts, Bill of Materials, and Schematic 7.2 www.ti.com Bill of Materials Table 2. Bill of Materials for TAS5708EVM TI SEMICONDUCTORS Item Description Ref Des Qty MFG MFG:Part No. Vendor Cut Tape: Part No. Tape & Reel Part No. 1 15W DIGAMP WITH DAP HTQFP48-PHP PA1 1 Texas Instruments TAS5708PHP Texas Instruments TAS5708PHP No T&R. Part No. 2 CAP 4700PFD 50V CERM 0603 X7R C10, C13 2 Panasonic ECJ-1VB1H472K Digi-Key PCC1780CT PCC1780TR 3 CAP .
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Board Layouts, Bill of Materials, and Schematic www.ti.com Table 3. Bill of Materials for TAS5710EVM (continued) TI SEMICONDUCTORS Item Description Ref Des Qty MFG MFG:Part No. Vendor Cut Tape: Part No. Tape & Reel Part No. 6 CAP 0.22UFD 25V CERM 0603 X7R C16, C18, C21, C23 4 Murata Electronics GRM188R71E224KA88D Digi-Key 490-3290-1 490-3290-2 7 CAP 1.0UFD 25V CERM 0603 X5R ROHS C17, C20, C22 3 Taiyo Yuden TMK107BJ105KA-T Digi-Key 587-1248-1 587-1248-2 8 CAP 4.7UFD 6.
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Board Layouts, Bill of Materials, and Schematic 7.3 www.ti.com Schematic # # IN OUT * * # IN OUT OUT IN #AD *BD MODE C28/29/30/31 C26/27 C32/33/34/35 MODE STUFF OPTION PA1 * MC-57xx CONTROLLER BOARD TAS5708PHP # # # * RECONSTRUCTION FILTERS OUTPUTS The schematic for TAS5708(TAS5710)EVM follows. The schematics for MC57xxPSIA appear on the following pages.
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USB INTERFACE ENGINEERING EVALUATION ONLY USB BOOT EPROM TO EVM BOARD (A0 IN DEFAULT) U3 TAS1020BPFB USB I/O USB RESET DECOUPLING TI CX PROJECT: EVM CONTROLLER BOARD Design Team: YONG GWAN KIM Mod: NC PCB Rev: NC Sheet 1 of 5 Schematic Rev: NC Save Date: MAY 29, 2008 Print Date Thu May 29, 2008 Drawn By: LDN Filename: MC57xxPSIA.
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SPDIF RECEIVER ENGINEERING EVALUATION ONLY SPDIF LOCK U5 SPDIF INPUT DATA FORMAT FMT1 FMT0 24Bit/MSB/I2S H H RCA INPUT (LOW) SPDIF INPUT SELECT 1-2: OPTO INPUT 2-3: RCA INPUT TO ADC DIR9001PW OPTO INPUT (HIGH) JP1 IN: SCKO = 512 Fs JP1 OUT: SCKO = 256 Fs (DEFAULT) TO EVM BOARD MASTER RESET TO EVM BOARD SPDIF DECOUPLING TO SPDIF TO ADC 5V POWER INPUT 3.
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ADC / CONNECTOR I/O ENGINEERING EVALUATION ONLY TO EVM BOARDS FAULT NOTES ON JUMPERS PDN IN: LIN/RIN = 1Vrms MAX. OUT: LIN/RIN = 2Vrms MAX. ANALOG INPUTS MUTE ADC (SDIN1) (SDIN2) FROM SPDIF PCM1808PW MC012 (1-2) PSIA (2-3) FROM USB FROM MASETER RESET FROM VR1 HIGH POWER INPUT 3.
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EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
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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.