Texas Instruments TAS3308EVM User manual

TAS3308EVM
Evaluation Module for theTAS3308 Digital Audio Signal Processor
User's Guide
March 2008 Digital Audio & Video Products
SLEU093

TAS3308EVM
Evaluation Module for theTAS3308 Digital Audio Signal Processor
User's Guide
Literature Number: SLEU093March 2008

Contents
Preface ............................................................................................................................... 5
1 Overview ................................................................................................................... 71.1 TAS3308EVM Features ............................................................................................ 81.2 PCB Component Map ............................................................................................ 11
2 Quick Setup Guide .................................................................................................... 132.1 Electrostatic Discharge Warning ................................................................................ 142.2 Unpacking the EVM ............................................................................................... 142.3 Power Supply Setup .............................................................................................. 142.4 Digital Audio Inputs/Outputs ..................................................................................... 142.5 Master/Slave Mode Operation ................................................................................... 152.5.1 Master Mode .............................................................................................. 152.5.2 Slave Mode ............................................................................................... 152.6 EVM Default Configuration ....................................................................................... 152.7 TAS3308 Software Installation .................................................................................. 16
3 System Interfaces ..................................................................................................... 233.1 Control Interface (Control1), Input .............................................................................. 243.2 Digital Audio Interface, Input (J1) ............................................................................... 243.3 PWM Output (J4) .................................................................................................. 253.4 Analog Input (J6) .................................................................................................. 263.5 Digital Audio Interface, Output (J9) ............................................................................. 263.6 RCA Connectors .................................................................................................. 273.7 MSP430 Port Connector (J3) .................................................................................... 273.8 I
2
S Master Slave Jumper (JP3) .................................................................................. 27
4 MSP430 Programming ............................................................................................... 294.1 Example of MSP430 Programming ............................................................................. 30
Important Notices ............................................................................................................... 31
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List of Figures
1-1 TAS3308EVM System ...................................................................................................... 91-2 TAS3308EVM System ..................................................................................................... 101-3 TAS3308EVM Component View ......................................................................................... 112-1 GDE Startup ................................................................................................................ 172-2 Setting the I
2
C Initialization Sequence .................................................................................. 172-3 Specifying the I
2
C Initialization Sequence .............................................................................. 182-4 Loading a Process Flow ................................................................................................... 192-5 Loading a Process Flow (Part B) ......................................................................................... 202-6 GDE Test Process Flow ................................................................................................... 214-1 MSP430 Control Example ................................................................................................ 30
List of Tables
2-1 Recommended Supply Voltages for EVM Board ...................................................................... 142-2 JP2 Clock Master/Slave Setting .......................................................................................... 153-1 Control1 Pin Description ................................................................................................... 243-2 J1 Pin Description .......................................................................................................... 243-3 J4 Pin Description .......................................................................................................... 253-4 J6 Pin Description .......................................................................................................... 263-5 J9 Pin Description .......................................................................................................... 273-6 RCA Connectors Pin Description ........................................................................................ 273-7 J3 Pin Description .......................................................................................................... 273-8 JP3 Pin Description ........................................................................................................ 28
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Preface
SLEU093 – March 2008
Read This First
About This Manual
This manual describes the operation of the TAS3308EVM evaluation module from Texas Instruments.
How to Use This ManualThis document contains the following chapters:
Chapter 1 – Overview
Chapter 2 – Quick Setup Guide
Chapter 3 – System Interfaces
Chapter 4 – MSP430
Information About Cautions and WarningsThis manual may contain cautions and warnings.
CAUTION
This is an example of a caution statement.
A caution statement describes a situation that could potentially damage yoursoftware or equipment.
WARNINGThis is an example of a warning statement.
A warning statement describes a situation that could potentiallycause harm to you.
The information in a caution or a warning is provided for your protection. Please read each caution andwarning carefully.
Related Documentation From Texas InstrumentsThe following table contains a list of data manuals that have detailed descriptions of the integrated circuitsused in the design of the TAS3308EVM. The data manuals can be obtained at the URL http://www.ti.com .
Related Documentation from Texas Instruments
Part Number Literature Number
TAS3308 TAS3308 Data ManualTLV1117-33 SLVS561TPS3825-33 SLVS165
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Additional Documentation
Additional Documentation
1. Graphical Development tool (GDE) for TAS3308 (GDE ver. 1.7 or later)2. General Application Notes
Trademarks
Equibit™ and PurePath Digital™ are trademarks of Texas Instruments.
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Chapter 1SLEU093 – March 2008
Overview
The TAS3308EVM PurePath Digital™ customer evaluation module demonstrates the Digital AudioProcessor TAS3308 from Texas Instruments (TI).
TAS3308 is a fully programmable high-performance audio processor. It uses an efficient, custom,multi-instruction programming environment optimized for digital audio processing algorithms. TheTAS3308 architecture provides high-quality audio processing by using a 48-bit data path, 28-bit filtercoefficients, and a single-cycle 28 ×48-bit multiplier with a 76-bit accumulator. An embedded 8051microprocessor provides algorithm and data control for the TAS3308. The TAS3308 is the commercialversion intended for home audio and other commercial applications.
This is a single board EVM. EVM can be configured with a TAS5601 or similar power stage. Thiscombination will provide complete signal processing and power amplification system solution whichincludes digital input/output (S/PDIF), analog inputs/outputs, interface to PC and DAP features like digitalvolume control, input and output mixers, auto mute, equalization, tone controls, loudness, dynamic rangecompression, surround effects.
The TAS3308 is well suited for inclusion in Digital Televisions, Home Theater Systems, Mini-ComponentAudio Systems and Pro-Audio systems.
Topic .................................................................................................. Page
1.1 TAS3308EVM Features ................................................................ 81.2 PCB Component Map ................................................................ 11
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1.1 TAS3308EVM Features
TAS3308EVM Features
•Socketed EEPROM for download of program and coefficients•6-channel discrete I
2
S input/4-channel I
2
S outputs•2-channel SPDIF receiver, optical input, into TAS3308 SDIN1•2-channel SPDIF transmitter, optical output from TAS3308 SDOUT1•2-channel SPDIF, optical input to TAS3308 SPDIFin•2-channel SPDIF, optical output from TAS3308 SDOUT2/SPDIFout•A 10-input multiplexed ADC input•PWM DAC stereo line output•One PWM DAC Headphone output•One Line output•USB to PC connection for software control•MSP430 for Standalone operation•Double-sided plated-through PCB layout
The primary usage mode of the EVM is to provide a software development platform that receives thecontrol and signal processing flow descriptions from a PC running the PurePath Studio GraphicalEnvironment (GDE) or Integrated Development Environment (IDE) through the USB interface. In thismode of operation, the user will develop a signal processing flow (applications) and components using thePurePath Studio. The resulting programs can be loaded into the EVM EEPROM. The TAS3308 will thenload the EEPROM contents and execute the signal processing flows. During execution, many of theTAS3308 signal processing flow parameters can be dynamically changed using the PurePath StudioGraphical development environment. Additional information on using the EVM with the PurePath Studiodevelopment environment is included in subsequent sections of this document and in the PurePath Studioonline documentation.
The EVM has a Reset Button which resets all of the board logic. A red RESET LED is lit when Reset isactive. The EVM also has a Mute button to mute the TAS3308 outputs. The Mute function is automaticallyactivated following a reset. A yellow mute LED is lit when Mute is active.
The EVM also contains a MSP430F2252 controller that can be programmed to provide stand aloneoperation using the EVM push buttons or an IR remote input. The microcontroller interfaces to theTAS3308 through the I
2
C, GPIO, and the Reset control lines. The microcontroller has and IR receiver,eight (8) circuit board pushbuttons and eight (8) LEDs to support user inputs.
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+ 9V
GND
+ 9V
GND
+5V_PWR
-5V_PWR
+3.3V_PWR
+3.3V_PWR
VALID
FAULT
N/C
N/C
PWM3_RI
PWM3_RD
PWM3_LI
PWM3_LD
PWM2_RI
PWM2_RD
PWM2_LI
PWM2_LD
PWM1_RI
PWM1_RD
PWM1_LI
PWM1_LD
TAS3308EVM
USB In
SDIN3 SDIN2 SDIN1
LRCLKIN
SCLKIN
MCLKIN
L1
R1
z
SPDIFin I2S
I2S Sig In
I2S Sig Out
GND
SPDIF_OUT
SPDIF_IN
SDOUT2 SDOUT1
LRCLKOUT
SCLKOUT
MCLKOUT
GND
Control
Input
Line Out 1
Headphone
SPDIF I/O
MSP430
Control
Power
Digital
Input
Analog
Output
TAS3308
Analog
Comp
SDA
SCL
GND
3.3V
GPIO1
GPIO2
/RESET
/MUTE
GND
GND
TUSB USB
Control
Digital Input/ Output
Lineout1L
Lineout1R
Line Out
Push
Buttons
RCA
IR
GND
+ 9V
GND
- 9V
SPDIFout I2S
] I2S Slave
] I2S Master
Analog
Input
L1 R1 L2 R2 L3 R3 L4 R4 L5 R5 L6 R6 L7 R7 L8 R8 L9 R9 L10 R10
PWM OUTPUT
TAS3308EVM Features
Figure 1-1. TAS3308EVM System
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FAULT
SH T 5
SH T 3
SHT 7
SH T 6
SH T 9
SH T 9
SH T10
FAULT
LEDs
SDA
GPIOx
SDA
RESET2
MUTE
3.3V
SHEET 8
(OPTICAL
SPDIF IN
+5V
9V-1 IN
SPDIF OUT
-5V
9V-2 IN
SH T 9
Lock
SCL
SCL
SH T 4
SH T 2
SH T 3
SH T 9 SHT 10
TYPE A JACK
EEPROM1
USB
Push Buttons
OPTICAL
SPDIF IN I2S
RESET-USB
GPIOx
DATA1
DATA2
MCLK
DATA0
SCLK
LRCLK
LRCLK
MCLK
SDIN1
LINx
SDIN2
SDIN1
SDIN3
MCLK
SCLK
LRCLK
3.3V
+5V
POWER
SUPPLY
PWM2
PWM3
PWM1
SDOUT2
SDOUT1
LRCLKOUT
SCLKOUT
MCLKOUT
CONTROLLER
SCLK
TAS3308
EEPROM2
SH TS 11/12
TAS3308EVM Features
Figure 1-2. TAS3308EVM System
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1.2 PCB Component Map
SPDIF I2S IN SPDIF SPDIF I2S SPDIF GND GND
I2S IN SDOUT2 IN OUT I2S OUT + 9 V -9 V
IR
Receiver
USB
IN
Control
IN
Analog Analog In Lineout PWM 1
In 1 L & R 1 L&R to 20 L & R L & R Lineout
Valid
Fault
PWM OUT
3 RI
3 RD
3 LI
3 LD
.
.
.
1 RI
1 RD
1 LI
1 LD
PWM2
Headphone
PCB Component Map
TAS3308EVM physical structure is shown in Figure 1-3 .
Figure 1-3. TAS3308EVM Component View
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Overview 12 SLEU093 – March 2008Submit Documentation Feedback

Chapter 2SLEU093 – March 2008
Quick Setup Guide
This chapter describes the overall TAS3308EVM board setup, power supply requirements and systeminterfaces. The chapter provides information regarding handling and unpacking, absolute operatingconditions, and a description of the factory default jumper configuration.
Topic .................................................................................................. Page
2.1 Electrostatic Discharge Warning ................................................. 142.2 Unpacking the EVM ................................................................... 142.3 Power Supply Setup .................................................................. 142.4 Digital Audio Inputs/Outputs ...................................................... 142.5 Master/Slave Mode Operation ..................................................... 152.6 EVM Default Configuration ......................................................... 152.7 TAS3308 Software Installation .................................................... 16
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2.1 Electrostatic Discharge Warning
2.2 Unpacking the EVM
2.3 Power Supply Setup
2.4 Digital Audio Inputs/Outputs
Electrostatic Discharge Warning
Many of the components on the TAS3308EVM are susceptible to damage by electrostatic discharge(ESD). Customers are advised to observe proper ESD handling precautions when unpacking and handlingthe EVM, including the use of a grounded wrist strap at an approved ESD workstation.
CAUTION
Failure to observe ESD handling procedures may result in damage to EVMcomponents.
Upon opening the TAS3308EVM package, please check to make sure that the following items areincluded:
•TAS3308EVM board using one TAS3308DCP (1 pc.)•PurePath CD-ROM containing data sheets, application reports, user guides, Gerber files, and PCsoftware tools (1 pc.)
If any of these items are missing, please contact the Texas Instruments Product Information Centernearest you to inquire about a replacement.
The TAS3308EVM is powered via the ±9 V terminals or the 9 V (center hot) power connectors, PJ1 andPJ2. The TAS3308 EVM generates a 5-V, –5-V, and 3.3-V internal supplies that are fed to theTAS3308EVM components.
Set the power supplies to ±9 V. Then turn off the supplies and them to the EVM.
Once the cables are connected, switch on the power supply. Current consumption should be less thanshown in Table 2-1 , if higher switch off and double check the cabling.
Table 2-1. Recommended Supply Voltages for EVM Board
Description Voltage Limitations Current Requirement
9 V 8.5 V – 9.5 V 0.3 A–9 V –8.5 V – 9.4 V 0.1 A
CAUTION
Applying voltages above the limitations given in Table 2-1 may causepermanent damage to your hardware.
The digital audio inputs can be connected to the board in two ways, either in the SPDIF format opticalTOSLINK input, OPTO1, or in I
2
S format on connector J1. The pin out this and the other connectors isshown in Chapter 3.
The SPDIF I
2
S IN input supplies signal to the TAS3308 SDIN1. When a valid lock is detected by theDIR9001 SPDIF receiver a blue SPDIF lock LED is lit.
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2.5 Master/Slave Mode Operation
2.5.1 Master Mode
2.5.2 Slave Mode
2.6 EVM Default Configuration
Master/Slave Mode Operation
The digital audio outputs can be to I
2
S or SPDIF format optical TOSLINK. The I
2
S output is provided onconnector J9. There are two SPDIF output options. One SPDIF output can be produced by the TAS3308on SDOUT2. This is set by a TAS3308 I
2
C register configuration option. This output is available onOPTO3. The other SPDIF output is the SDOUT1 output that is converted into SPDIF format by an externalencoder. This is output on OPTO4.
The TAS3308 has an optical SPDIF input from OPTO2. This is a pass though only connection to theTAS3308 SDOUT2/SPDIF output on, OPTO3.
The TAS3308EVM is delivered configured to operate in clock master mode. However, the TAS3308 canbe configured as a clock slave or master using JP3.
Table 2-2. JP2 Clock Master/Slave Setting
Jumper JP3 Pins I
2
S Clock Mode
1, 2 Slave2, 3 Master
In master mode, the master clock, MCLK SCLK and LRCLK for the system are provided on J9. Data canbe input on the analog input and as I
2
S data on J1.
SPDIF I
2
S input from OPTO1 is not supported in master mode.
Data can be output from the I
2
S outputs on J9, SPDIF I
2
S output, OPTO4, and from SPDIF SDOUT2when the SDOUT2 is configured for SPDIF output.
In slave mode, data and clocks can be input in the SPDIF I
2
S IN, OPTO1, or the I
2
S input, J1. The SPDIFinput is selected automatically when EVM detects a valid SPDIF signal on OPTO1. If the EVM does notdetect a valid SPDIF signal on OPTO1, then the I
2
S inputs are used.
In slave mode, the TAS3308 ADC requires an external clock input from the I
2
S IN or the SPDIF I
2
S IN forcorrect operation. The performance of the ADC is affected by the clock source jitter.
Data can be output from the I
2
S outputs on J9, SPDIF I
2
S output, OPTO4, and from SPDIF SDOUT2when the SDOUT2 is configured for SPDIF output.
The TAS3308 is placed into the default configuration by receiving a reset. The TAS3308 receives a resetfrom the power up circuitry, by pressing the Reset button, or by receiving a reset signal through the USBinterface. Following the receipt of reset, the TAS3308 EVM will load the contents of EEPROM2 and comeup with Mute enabled, clock master mode enabled, and the PWM outputs configured for Comb ADmodulation.
As described in this section, an example PurePath Studio GDE processing flow is supplied that configuresthe TAS3308 to support a I
2
S digital PCM input, analog input, digital output, line output , headphoneoutput and TAS5601 Power Stage for both master and slave mode.
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2.7 TAS3308 Software Installation
TAS3308 Software Installation
The TAS3308 is programmed and configured using PurePath Studio. This PurePath Studio is composedof a graphical development environment (GDE), the integrated development environment (IDE) and thecomponent publisher. The GDE permits the user to program TAS3308 using predefined signal processingcomponents that are placed and connected graphically on the GDE pallet. PurePath Studio runs on aWindows® XP computer.
The IDE is software development environment that permits the user to construct and test the code for anew GDE component.
The component publisher is used to create the component, define the component’s control interface andthe ways in which the component can be used.
PurePath Studio software is supplied on the TAS3308 Software CD-ROM. The latest version of PurePathStudio is also available on the TI Extranet to registered users.
To access the TI PurePath Studio Extranet site•To get access to the TI Extranet for the PurePath Studio tool suite – open a web browser and go to thefollowing site and fill in the requested information.http://iag.itg.ti.com/msa/
There are two types of licenses•For those who are interested only in evaluating the tools, there is an evaluation license.•For those who are interested in product development using PurePath Studio tools there is a productionlicense. This is the software license that is needed to support the EVM.
Access to the Extranet is available by using a browser to access my.ti.com and selecting Extranets. ThePurePath Studio software is contained under the link TAS3108-PurePath Studio.
To load PurePath Studio Software suite•From CD-ROM – Insert the TAS3308 Software CD-ROM. Open the TAS3308GDE directory and runsetup_PurePath_Studio_vx.xx.exe. Follow the instructions to complete the installation.•From Download – Save the installation file to temporary directory. Go to the temporary directory andrun setup_PurePath_Studio_vx.xx.exe. Follow the instructions to compete the installation.•The CD-ROM also contains initialization files for master and slave EVM initialization and a simpleprocess flow that can be used to verify the TAS3308 EVM operation.•After the PurePath Studio installation is complete, copy the contents of the CD-ROM TAS3308_Configdirectory to C:\ Program Files\Texas Instruments Inc\PurePath Studio\MyProcessFlows.
Using the TAS3308 EVM
After completing the software installation, turn on power supplies and connect USB cable to Input-USBboard.
To start the GDE – Go to the Start menu and select All Programs/Texas Instruments/PurePathStudio/PurePath Studio GDE.
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TAS3308 Software Installation
Figure 2-1. GDE Startup
The startup of GDE takes few seconds.
The TAS3308 requires an initialization configuration file to be loaded after a reset. This file configures theTAS3308 for the EVM configuration, enables the analog outputs, and sets the clock master/slave mode.Before loading or building a process flow verify that an initialization file is specified in the Execute I
2
Ccommand file window. This window is found under Tools/I
2
C Command Tool.
Figure 2-2. Setting the I
2
C Initialization Sequence
If the EVM is to be operated in Master mode, select 3308EVM_init_master.cfg.
If the EVM is to be operated in Slave mode, select 3308EVM_init_slave.cfg.
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TAS3308 Software Installation
Figure 2-3. Specifying the I
2
C Initialization Sequence
Then verify that the “Execute on reset” box is checked.
At this point a process flow can be built using the TAS3308 application framework, the TAS3308 I/Ocomponents and the audio processing components.
Building and running a process flow
A good starting point is to load the predefined TAS3308 Test process flow.
This flow is loaded by selecting File/Open.
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TAS3308 Software Installation
Figure 2-4. Loading a Process Flow
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TAS3308 Software Installation
Figure 2-5. Loading a Process Flow (Part B)
This loads a process flow that streams a signal from either the ADC or SAP1 input to the PWM and SAPoutput.
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