Texas Instruments Portable Speaker SLEU056 User Manual
TAS5010−5112F2EVM  
Evaluation Module for the TAS5010 Digital  
Audio PWM Processor and the TAS5112ADFD  
Digital Audio PWM Power Output Stage  
User’s Guide  
June 2004  
DAV Digital Audio/Speaker  
SLEU056  
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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 incorporating the goods.  
As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic  
compatibility and therefore may not meet the technical requirements of the directive.  
Should this evaluation kit not meet the specifications indicated in the EVM User’s Guide, the kit may be returned  
within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE  
WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED,  
IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY  
PARTICULAR PURPOSE.  
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user  
indemnifies TI from all claims arising from the handling or use of the goods. Please be aware that the products  
received may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). Due to the open construction  
of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic  
discharge.  
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE  
TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.  
TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not  
exclusive.  
TI assumes no liability for applications assistance, customer product design, software performance, or  
infringement of patents or services described herein.  
Please read the EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM  
User’s Guide prior to handling the product. This notice contains important safety information about temperatures  
and voltages. For further safety concerns, please contact the TI application engineer.  
Persons handling the product must have electronics training and observe good laboratory practice standards.  
No license is granted under any patent right or other intellectual property right of TI covering or relating to any  
machine, process, or combination in which such TI products or services might be or are used.  
Mailing Address:  
Texas Instruments  
Post Office Box 655303  
Dallas, Texas 75265  
Copyright © 2004, Texas Instruments Incorporated  
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EVM WARNINGS AND RESTRICTIONS  
It is important to operate this EVM within the input voltage range of 0 V to 29.5 V for the output  
stage and 15 V to 20 V for the system supply.  
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 permanent damage to the EVM. Please consult the EVM User’s Guide prior to  
connecting any load to the EVM output. If there is uncertainty as to the load specification,  
please contact a TI field representative.  
During normal operation, some circuit components may have case temperatures greater than  
60°C. The EVM is designed to operate properly with certain components above 60°C as long  
as the input and output ranges are maintained. These components include but are not limited  
to linear regulators, switching transistors, pass transistors, and current sense resistors. These  
types of devices can be identified using the 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  
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Preface  
Read This First  
About This Manual  
This manual describes the operation of the TAS5010−5112F2EVM 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 – EVM Board Operation  
- Chapter 4 – Hints for Measurements of Performance  
Information About Cautions and Warnings  
This book may contain cautions and warnings.  
This is an example of a caution statement.  
A caution statement describes a situation that could potentially  
damage your software or equipment.  
This is an example of a warning statement.  
A warning statement describes a situation that could potentially  
cause harm to you.  
iii  
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Trademarks  
The information in a caution or a warning is provided for your protection.  
Please read each caution and warning carefully.  
Related Documentation From Texas Instruments  
The following table contains a list of data manuals that have detailed  
descriptions of the integrated circuits used in the design of the  
TAS5010−5112F2EVM. The data manuals can be obtained at the URL  
http://www.ti.com.  
Part Number  
Literature Number  
SLAS328  
SLES094  
SLAS307  
SLES007  
SLCS136  
SLVS184  
TAS5010PFB  
TAS5112ADFD  
TAS3002PFB  
DIR1703E  
LMV331IDBVR  
TPS3705−33DGN  
SN74LVC2GU04DBVR  
SN74LVC2G14DBVR  
SN74LVC2G08DCTR  
SN74LVC1G02DBVR  
SN74LVC1G32DBVR  
SN74LV21APWR  
SCES197  
SCES200  
SCES198  
SCES213  
SCES219  
SCES340  
Additional TAS5010−5112F2EVM Documentation  
- DCT Software and User’s Guide for Controlling the TAS3002  
- TAS5010−5112F2EVM Application Report (SLEA036)  
- Data Manuals  
FCC Warning  
This equipment is intended for use in a laboratory test environment only. It  
generates, uses, and can radiate radio frequency energy and has not been  
tested for compliance with the limits of computing devices pursuant to subpart  
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  
Equibit™ and PurePath Digital™ are trademarks of Texas Instruments.  
iv  
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Contents  
1
2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1  
1.1  
TAS5010−5112F2EVM Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2  
Detailed Description of the EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1  
2.1  
2.2  
Board Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2  
Description of Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3  
2.2.1 Double-Speed Control (JMP120) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3  
2.2.2 Enable/Disable S/PDIF−MUTE (JMP130) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3  
2.2.3 Bypassing Equalizer Functions in the Digital Audio Processor (JMP360) . . . . 2-3  
Default Jumper Positioins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4  
Description of Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4  
2.4.1 S/PDIF Digital Audio Coaxial/RCA Input (J100) . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4  
2.4.2 S/PDIF Optical (J101) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4  
2.4.3 Analog input (J160) and Analog Output (J170) . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4  
2.3  
2.4  
I2  
2.4.4 PC and C Interface (J300) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5  
2.4.5 Loudspeaker Connectors (J540, J541, J580, and J581) . . . . . . . . . . . . . . . . . . 2-6  
2.4.6 Power Supply Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6  
Description of Switches and Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7  
2.5.1 S/PDIF Input Selector Switch (S100) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7  
2.5.2 Bypass Digital Audio Processor Switch (S320) . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7  
2.5.3 Reset Board Button (S620) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7  
2.5.4 Mute Button (S240) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7  
2.5.5 Volume Control (S340 and S341) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7  
Description of Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8  
2.6.1 Power LED (LED223) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8  
2.6.2 No S/PDIF Input LED (LED222) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8  
2.6.3 Temperature Warning LED (LED221) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8  
2.6.4 Protection Mode LED (LED220) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8  
2.5  
2.6  
3
EVM Board Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1  
3.1  
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2  
3.1.1 Power the EVM by One Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2  
3.1.2 Power the EVM With Two Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2  
Setup the TAS5010−5112F2EVM With the S/PDIF Input . . . . . . . . . . . . . . . . . . . . . . . . . 3-3  
3.2.1 Start-up Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4  
Setup the TAS5010−5112F2EVM With the Analog Line Input . . . . . . . . . . . . . . . . . . . . . 3-4  
Interfacing the Analog Line Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4  
Controlling the DAP With PC Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4  
3.2  
3.3  
3.4  
3.5  
4
Hints for Measurement of Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
v
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Figures  
1−1  
2−1  
2−2  
2−3  
2−4  
2−5  
2−6  
3−1  
3−2  
Simplified TAS5010−5112F2EVM Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2  
Board Outline With Connectors, Switches, Jumpers, and Indicators . . . . . . . . . . . . . . . . . . 2-2  
Physical Structure for the TAS5010−5112F2EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2  
Default Jumper Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4  
Pin Numbers at the Line Input/Output Connector (Top View) . . . . . . . . . . . . . . . . . . . . . . . . 2-4  
2
2
Pin Numbers at the Parallel Port/I C Interface/I C (J300) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5  
Pin Numbers at PSU Connector (Top View) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6  
Recommended Power-Up and Power-Down Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2  
EVM Board Connected to S/PDIF Sources and Personal Computer . . . . . . . . . . . . . . . . . 3-3  
Tables  
2−1  
2−2  
2−3  
2−4  
3−1  
3−2  
Description of J160 and J170 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5  
Description of J300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5  
Description of Loudspeaker Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6  
Description of PSU Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6  
Maximum Supply Voltage (Single Supply) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2  
Maximum H-bridge Voltage vs Load Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2  
vi  
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Chapter 1  
Introduction  
The TAS5010−5112F2EVM PurePath Digitalt customer evaluation module  
demonstrates two integrated circuits, the TAS5010 and TAS5112ADFD from  
Texas Instruments. The TAS5010 is a high performance 24-bit stereo digital  
modulator based on Equibitt technology. This IC converts input PCM serial  
digital audio data to a pulse width modulated (PWM) audio data stream. The  
2
TAS5010 PWM modulator accepts I S data with a sample rate up to 192 kHz.  
The TAS5010 is designed for implementation together with the  
TAS5112ADFD digital output stage for driving two loudspeakers in a stereo  
application.  
The TAS5010 is pin compatible with the TAS5001 PCM−PWM modulator. The  
maximum sample rate for the TAS5001 is 96 kHz.  
Together, the TAS5010 and one TAS5112ADFD provide the complete  
PurePath Digitalt conversion of a 3.3-V digital audio input stream up to  
2x50 W into 6-Ω loudspeakers. The chipset is ideal for applications requiring  
excellent audio quality, minimum size and weight, and high power efficiency.  
The chipset can be used in a range of products such as micro-components  
systems, home theater in a box, DVD receivers, or TV sets.  
The TAS5010−5112F2EVM is a complete true digital amplifier including an  
2
S/DIF receiver, I S audio interface, volume control, interface to personal  
computer through the parallel port, and required control logic. The amplifier  
reference design is surrounded by a white line on the PCB.  
Topic  
Page  
1.1 TAS5010−5112F2EVM Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2  
1-1  
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TAS5010−5112F2EVM Features  
1.1 TAS5010−5112F2EVM Features  
- PurePath Digital™ reference design (double-sided plated-through PCB  
layout)  
- S/PDIF receiver with coaxial and optical input (sampling rate = 32 kHz –  
192 kHz)  
2
- I S audio interface (sampling rate: 32 kHz – 96 kHz)  
- On-board volume control  
- Auto-mute function  
- Self-contained short circuit and temperature protection system  
- Digital audio processor (DAP), which include 24-bit volume control, digital  
gain, bass and treble control, parametric equalization, dedicated speaker  
equalization, loudness control, and adjustable dynamic range  
compression/expansion.  
- 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. Simplified TAS5010−5112F2EVM Block Diagram  
PARRALLEL  
PORT  
INTERFACE  
VOLUME  
CONTROL  
PC SOFTWARE  
I2C BUS  
TAS3002  
DIGITAL AUDIO  
PROCESSOR  
ANALOG INPUT  
ANALOG OUTPUT  
OPTICAL INPUT  
32 kHz − 96 kHz  
COAXIAL INPUT  
TAS5112ADFD  
DIGITAL AUDIO  
PWM POWER  
DIR1703  
S/PDIF  
TAS5010  
DIGITAL AUDIO  
PWM PROCESSOR  
I2S BUS  
I2S BUS  
RECEIVER  
OUTPUT STAGE  
I2S INPUT  
I2S INTERFACE  
32 kHz − 192 kHz  
The DIR1703 IC from Texas Instruments/Burr-Brown is used as S/PDIF  
receiver and system clock generator. This product is a digital audio interface  
receiver (DIR) that receives and decodes audio data up to 96-kHz sampling  
rate. DIR1703 is running in a configuration where it automatically switches  
between PLL mode and crystal mode. When the DIR1703 is connected to an  
active digital source, it is running in PLL-mode. The system clock (SCKO)  
frequency depends on the incoming sampling rate (fs): SCKO = 256 x fs. When  
no digital source is represented, the DIR1703 switches to crystal mode. The  
system clock frequency in crystal mode depends on the external crystal  
connected to the DIR1703 receiver. On the TAS5010−5112F2EVM board, the  
crystal-mode system clock is 12.288 MHz.  
Crystal-mode operation is used to generate a fixed clock when the  
TAS5010−5112F2EVM board is connected to an analog source. The external  
anti-aliasing filter for the A/D converter is optimized to 48-kHz sampling rates.  
1-2  
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TAS5010−5112F2EVM Features  
The TAS3002 IC from Texas Instruments is used as digital audio processor  
2
(DAP). All features in the DAP can be controlled through the I S interface.  
2
Adjustment of the sound level can be executed through the I C bus and with  
two push buttons on the EVM board.  
During power up, the TAS3002 settings and coefficients are loaded from an  
external serial EEPROM. The TAS3002 coefficients control all features in the  
DAP. Customized start up settings can be downloaded to the EEPROM. This  
operation is easy to execute with a personal computer, DCT software, and a  
cable between TAS5010−5112F2EVM and the computer. The  
TAS5010−5112F2EVM is connected to the LPT port at the computer.  
Introduction  
1-3  
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1-4  
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Chapter 2  
Detailed Description of the EVM  
This chapter describes the TAS5010−5112F2EVM board in regards to board  
layout, jumpers, switches, buttons, and connectors.  
Topic  
Page  
2.1 Board Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2  
2.2 Description of Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3  
2.3 Default Jumper Positioins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4  
2.4 Description of Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4  
2.5 Description of Switches and Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7  
2.6 Description of Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8  
2-1  
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Board Overview  
2.1 Board Overview  
Figure 2−1. Board Outline With Connectors, Switches, Jumpers, and Indicators  
PSU Connector  
S/PDIF Digital Audio  
Coaxial/RCA Input  
J600  
J100  
J101  
S620  
Coaxial  
Optical  
J540  
J541  
+
−
Switch between Optical  
and Coaxial input  
S/PDIF ERROR  
ENABLE  
RESET  
SAMPLE RATE  
CONTROL  
*
*
S/PDIF Digital Audio  
Optical/Toslink Input  
S240  
MUTE  
A/D−Converter Output  
D/A−Converter Input  
J170  
J160  
BYPASS DIGITAL AUDIO PROCESSOR  
J580  
J581  
+
−
ACTIVE  
EQ DISABLE  
EQUALIZER ENABLE  
PC and I 2C Connector  
EQ ENABLE  
*
J400  
BYPASSED  
J300  
S341  
−
S340  
+
Volume Control  
Note: *) Indicates default jumper posistions.  
The physical structure for the TAS5010−5112F2EVM is illustrated in  
Figure 2−2. Block headings refer to page headings in the  
TAS5010−5112F2EVM schematic.  
Figure 2−2. Physical Structure for the TAS5010−5112F2EVM  
POWER SUPPPLY SECTION  
AUDIO INPUT SECTION  
CONTROL SECTION  
TAS5010 + TAS5112ADFD REFERENCE DESIGN  
PCM TO PWM MODULATOR SECTION & OUTPUT STAGE SECTION  
DIGITAL AUDIO  
PROCESSOR SECTION  
2-2  
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Description of Jumper Settings  
2.2 Description of Jumper Settings  
2
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 TAS5010 (DBSPD, pin 39). The  
TAS5010 is operating in single-speed mode if the DBSPD pin is asserted low  
and in double-speed if it is asserted high. Single-speed is required for  
sampling rate at 32 kHz, 44.1 kHz, 48 kHz, and double-speed for 88-kHz and  
96-kHz sampling rate.  
The S/PDIF receiver automatically controls the DBSPD pin if JMP120 shunts  
pin 1 and 2 (default setting). If JMP120 shunts pin 2 and 3, the TAS5010 is in  
single-speed mode. If JMP120 shunts pin 3 and 4, the TAS5010 is in double  
speed mode.  
2.2.2 Enable/Disable S/PDIF−MUTE (JMP130)  
JMP130 is used to disable the S/PDIF-MUTE signal (S/PDIF-MUTE =  
(DIR1703-UNLOCK + DIR1703-ADFLG)). The DIR1703-UNLOCK signal is  
high until the PLL in DIR1703 detects and locks on an incoming digital signal.  
The ADFLG signal is high when the S/PDIF data does not include a PCM audio  
signal.  
The S/PDIF-MUTE signal is used to shutdown the output stage (the H-bridge  
stop switching). To obtain click and pop reduced shutdown it is necessary to  
mute the output stage before Reset on TAS5010 is asserted low.  
When the EVM board is connected to an analog source or to a digital source  
through the I2S interface, is it necessary to disable the UNLOCK warning. This  
is done with the JMP130 jumper. When JMP130 shunts pin 1 and 2 the  
UNLOCK warning is enabled (default setting). The warning signal is disabled  
If JMP130 shunts pin 2 and 3.  
2.2.3 Bypassing Equalizer Functions in the Digital Audio Processor (JMP360)  
JMP360 is used to disable the equalizer function in the DAP. The equalizer  
function is enabled if JMP360 shunts pin 1 and 2. The equalizer is disabled  
when JMP360 shunts pin 2 and 3.  
Note:  
Bass and treble are flat when the equalizer is bypassed.  
Detailed Description of the EVM  
2-3  
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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  
J541  
+
−
JMP130  
JMP120  
J101  
J170  
J160  
J580  
J581  
+
JMP360  
J300  
−
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  
coaxial cable with 75-Ω characteristic impedance (e.g., RG59 cable). The  
highest sampling rate supported for this input is 96 kHz.  
2.4.2 S/PDIF Optical (J101)  
The Toslink connector can be connected to a digital S/PDIF signal through an  
optical cable. The highest sampling rate supported for this input is 96 kHz.  
2.4.3 Analog input (J160) and Analog Output (J170)  
Analog sources can be connected to the A/D converter through J160. The  
analog line input is optimized for an input signal with a maximum voltage at  
2.1 V  
.
RMS  
Analog output from the digital audio processor is available at P170. Maximum  
output level is 0.7 V . Pin numbers for J170 is equal to numbers at J160  
RMS  
Figure 2−4. Pin Numbers at the Line Input/Output Connector (Top View)  
3
2
1
2-4  
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Description of Connectors  
Table 2−1.Description of J160 and J170  
Pin No.  
Description  
Analog Input Connector (J160)  
1
2
3
Left Channel Input  
Ground  
Right Channel Input  
Analog Output Connector (J170)  
1
2
3
Left Channel output  
Ground  
Right Channel Output  
2.4.4 PC and I2C Interface (J300)  
The PC interface using the attached special cable to parallel/printer port on the  
PC. This makes it possible to control the TAS3002 digital audio processor  
totally from the PC using the special DCT software saved on the PurePath  
Digitalt amplifier CD-ROM.  
The PC interface can also be used to control the TAS3002 from an external  
microcontroller of your own choice.  
Figure 2−5. Pin Numbers at the Parallel Port/I2C Interface/I2C (J300)  
9
8
7
6
5
4
1
3
2
Table 2−2.Description of J300  
Pin No.  
Pin Description  
I/O  
Net Name on Schematic  
1
2
3
4
5
6
7
8
9
Power ON Reset  
Serial Data Line (SDA)  
Serial Clock Line (SCL)  
Serial Data Line In  
Serial Clock Line Out  
Reserved  
O
POWER−ON−RESET  
I/O SDA−BI  
I/O SCL−BI  
I
SDA−IN  
O
−
O
I
SCL−OUT  
For future use  
SDA−OUT  
SCL−IN  
Serial Data Line Out  
Serial Clock Line In  
0 V  
−
GND  
Pin 2 (SDA) and pin 3 (SCL) are used for communication between an external  
micro-controller and the digital audio processor.  
Detailed Description of the EVM  
2-5  
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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  
J541  
J580  
J581  
Left speaker positive output terminal  
Left speaker negative output terminal  
Right speaker positive output terminal  
Right speaker negative output terminal  
Caution  
Both positive and negative speaker outputs are floating and may NOT  
be connected to ground (f.ex. through an oscilloscope).  
2.4.6 Power Supply Connector  
Figure 2−6. Pin Numbers at PSU Connector (Top View)  
4
3
2
1
Table 2−4.Description of PSU Connector  
Pin No.  
Description  
Net Name at Schematic  
1
Supply voltage for output stage  
(VHBR)  
POWER−OUTPUT−STAGE  
2
Supply voltage for control and gate  
drive (V+)  
−
3
4
Ground  
Ground  
GND  
GND  
2-6  
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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.  
2.5.2 Bypass Digital Audio Processor Switch (S320)  
When the lever is pressed in the direction of S341, the DAP is bypassed. When  
the lever is pressed in the direction of U360 (TAS3002), the DAP is in the signal  
path. Below S320 is a label (DAP ON), which indicates the position of the lever  
for the DAP inserted in signal path.  
Warning  
Bypassing the DAP is equal to maximum output power (attenuation = 0 dB). This  
might be loud and could possible damage your loudspeaker and hearing.  
2.5.3 Reset Board Button (S620)  
This is the master RESET for the EVM board. While this button is held down,  
the DIR1703, TAS3002, TAS5010, and TAS5112ADFD are held RESET and  
latching errors are cleared. Note that while the RESET button is held down,  
the No S/PDIF LED lights up, even if a valid S/PDIF input signal is present,  
because the DIR1703 S/PDIF receiver is held RESET.  
2.5.4 Mute Button (S240)  
The output stage is muted (not switching) while this button is held down and  
unmutes when it is released.  
2.5.5 Volume Control (S340 and S341)  
S341 and S340: Volume control of TAS3002 DAP. Press and hold the S341  
button to decrease output power level. Press and hold the S340 button to  
increase output power level.  
Note:  
Change of listening level is slow. It takes approximately 25 seconds to  
change attenuation from –70 dB to 0 dB.  
The TAS3002 device implements a soft volume control. This feature allows a  
change from one volume level to another over the entire range of volume  
control (+18 dB to mute). Above 0 dB, there is risk of signal clipping. Distortion  
of output signals is the result of signal clipping.  
Note:  
Significant signal clipping might result in activation of the overcurrent  
protection system.  
Detailed Description of the EVM  
2-7  
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Description of Indicators  
2.6 Description of Indicators  
2.6.1 Power LED (LED223)  
The green LED indicates that the control circuitry at the  
TAS5010−5112F2EVM 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.  
Reasons to have a No S/PDIF warning:  
- The lever at the S/PDIF input selector switch (S100) is placed in the wrong  
position.  
- The S/PDIF signal is missing. Some DVD players remove the S/PDIF  
output signal when the drawer is opened.  
Note:  
When the SPDIF−MUTE signal from the S/PDIF receiver is disabled  
(JMP130 is shunting pin 2 and pin 3), the No S/PDIF indication is disabled.  
2.6.3 Temperature Warning LED (LED221)  
The yellow LED indicates that the temperature of the TAS5112ADFD junction  
has reached the warning level. This is step one of the two-step thermal  
protection system implemented in the TAS5112ADFD device. The  
temperature warning is an indication only; the operation of the system is  
unchanged. If the temperature increases further and above the shutdown  
level, the error latch is set and the system goes into RESET mode. At this point,  
the Protection Mode LED will be lit as well as the Temperature Warning LED.  
2.6.4 Protection Mode LED (LED220)  
The red LED indicates that protection circuit is engaged and it has put the  
output stage in shutdown mode.  
Possible causes for shutdown mode:  
- Two speaker terminals are shorted  
- The amplifier is constantly overloaded (decrease volume level).  
- One speaker terminal is shorted to ground (f.ex. through an oscilloscope)  
- The output stage is in thermal shutdown due to overload.  
Check the setup and board carefully and remove the cause of the failure before  
pressing RESET (S620) to disengage the protection mode.  
2-8  
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Chapter 3  
EVM Board Operation  
This chapter describes the TAS5010−5112F2EVM board operation.  
Topic  
Page  
3.1 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2  
3.2 Setup the TAS5010-5112F2EVM With the S/PDIF Input . . . . . . . . . . . . 3-3  
3.3 Setup the TAS5010-5112F2EVM With the Analog Line Input . . . . . . . 3-4  
3.4 Interfacing the Analog Line Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4  
3.5 Controlling the DAP With PC Software . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4  
3-1  
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Power Supply  
3.1 Power Supply  
The TAS5010−5112F2EVM 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.  
3.1.1 Power the EVM by One Power Supply  
A single power supply can be connected to the TAS5010−5112F2EVM board.  
Short VHBR and V+ at the power cable (red and white plugs).  
Voltage for the connected power supply is not allowed to be below 15 V. The  
maximum supply voltage depends of the speaker load resistance. Check the  
recommended maximum supply voltage in the TAS5112ADFD data sheet  
(SLES094).  
Table 3−1.Maximum Supply Voltage (Single Supply)  
Supply voltage (VHBR and V+)  
R
= 6 Ω  
LOAD  
29.5 V  
3.1.2 Power the EVM With Two Power Supplies  
When two supplies power the TAS5010−5112F2EVM, it is possible to adjust  
the output power with the level of the voltage VHBR (pin 1 at J640). The  
minimum VHBR voltage is 0 V. The maximum voltage depends of the load  
resistance. Check the recommended maximum supply voltage in the  
TAS5112ADFD data sheet (SLES094).  
Table 3−2.Maximum H-bridge Voltage vs Load Impedance  
R
= 6 Ω  
LOAD  
Maximum VHBR voltage  
V+ voltage  
29.5 V  
15 V – 20 V  
Figure 3−1. Recommended Power-Up and Power-Down Sequence  
V+  
VHBR  
>1 ms  
>1 ms  
3-2  
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Setup the TAS5010−5112F2EVM With the S/PDIF Input  
3.2 Setup the TAS5010−5112F2EVM 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). There is no  
attenuation if DAP is bypassed. If the DAP is in the signal path, the start-up  
volume level depends on what is programmed in the serial EEPROM on the  
EVM board. The default startup volume level is initially programmed to 12 dB  
below full scale, which on some speakers still might be loud. The default  
volume level can be changed with the DCT software on the PC.  
The following are the conditions for standard setup:  
1) All jumpers are in default position.  
2) Speakers, power supply, and if required a cable for PC communication are  
initially connected to the EVM board.  
3) The TAS5010−5112F2EVM can be powered with either one or two power  
supplies (see the Power Supply section). Power supplies are initially  
switched OFF.  
4) Music player is initially switched OFF.  
5) PC connection is optional.  
Figure 3−2. EVM Board Connected to S/PDIF Sources and Personal Computer  
Power  
Supply  
Power  
Supply  
S/PDIF Coaxial/RCA cable  
PSU Connector  
J600  
J100  
J101  
S620  
J540  
Coaxial  
Optical  
+
−
Switch between  
Optical and Coaxial input  
S/PDIF ERROR  
ENABLE  
RESET  
GREEN  
SAMPLE RATE  
CONTROL  
*
*
S/PDIF Optical/Toslink cable  
S240  
J541  
MUTE  
BLUE  
SPEAKER LEFT  
J170  
J160  
BYPASS DIGITAL AUDIO PROCESSOR  
J580  
+
−
ACTIVE  
GREEN  
EQ DISABLE  
EQ ENABLE  
EQUALIZER ENABLE  
*
J400  
BYPASSED  
J581  
J300  
S341  
−
S340  
+
Attached cable for PC  
Interface (LPT Port)  
BLUE  
SPEAKER RIGHT  
Note: *) Indicates default jumper posistions.  
VOLUME CONTROL  
POWER  
PC with GUI software to control:  
− Volume  
NO S/PDIF  
− Bass, Treble & Loudness  
TEMPERATURE WARNING  
PROTECTION MODE  
− Equalizer  
− Loudness  
EVM Board Operation  
3-3  
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Setup the TAS5010−5112F2EVM 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.  
3) Turn on the CD/DVD player and play the test CD. Observe that the yellow  
No S/PDIF now is OFF.  
4) Observe that digital audio is coming from the left and right speakers.  
3.3 Setup the TAS5010−5112F2EVM With the Analog Line Input  
- Disable the UNLOCK warning from S/PDIF receiver (JMP130: shunts pin  
2 and 3)  
- Connect the TAS5010−5112F2EVM board and PC with the attached cable  
- Connect the analog source to the analog input (J160)  
- Power up the TAS5010−5112F2EVM board  
- Enable the TAS3002 analog input with the DCT software  
- Disable the TAS3002 digital input (both SDIN1 and SDIN2) with the DCT  
software  
- The TAS5010−5112F2EVM board is ready to play with analog source  
3.4 Interfacing the Analog Line Output  
The default is the analog line output (J170) active. The analog line output can  
be connected to analog tape recorders or analog amplifiers (e.g., a  
subwoofer).  
3.5 Controlling the DAP With PC Software  
Operating instructions for the DCT software are described in the Digital Audio  
Processor (DAP) Configuration Tool Operating Instruction user’s guide, which  
is located on the PurePath Digitalt Amplifier CD-ROM.  
3-4  
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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. Specifications for the AES17 filter are described in the  
AESStandard Method For Digital Audio Engineering – Measurement of Digital  
Audio Equipment (the AES17 standard is available from the Audio  
Engineering Society – www.aes.org).  
When evaluating the performance of the digital amplifier section, bypass the  
digital audio processor with S320 or adjust all settings to neutral and  
attenuation to 0 dB.  
Connect the TAS5010−5112F2EVM to a regulated power supply with a short  
cable. The length of the PSU cable must not exceed 0,3 meters.  
4-1  
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4-2  
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