Texas Instruments TLV320AIC3111 EVM User manual

User's GuideSLAU285 – July 2009
TLV320AIC3111 EVM
This user’s guide describes the operation of the TLV320AIC3111 EVM evaluation module (EVM). TheEVM features a TLV320AIC3111 stereo audio codec, amplifiers for speakers and headphones, and adigital signal processing module. Together with the USB-MODEVM board, the TLV320AIC3111 ControlSoftware and a PC running Windows™ XP it is a plug-and-play solution to evaluate the capabilities of theTLV320AIC3111.
The information in a caution or a warning is provided for your protection. Read each caution and warningcarefully.
Contents1 EVM Overview ............................................................................................................... 21.1 Introduction .......................................................................................................... 21.2 Box Contents ........................................................................................................ 21.3 Related Documentation From Texas Instruments .............................................................. 22 EVM + PC .................................................................................................................... 32.1 EVM Preparation .................................................................................................... 32.2 Control Software .................................................................................................... 32.3 Installation ........................................................................................................... 42.4 Concepts ............................................................................................................. 42.5 Main Window ........................................................................................................ 52.6 Dialogs and Active Objects ........................................................................................ 63 EVM Hardware ............................................................................................................. 173.1 Connectors and Jumpers......................................................................................... 173.2 EVM Schematics .................................................................................................. 203.3 EVM Bill of Materials .............................................................................................. 21Appendix A USB-MODEVM Schematic ...................................................................................... 23Appendix B USB-MODEVM Bill of Materials ................................................................................ 24Appendix C USB-MODEVM Protocol ......................................................................................... 26
List of Figures
1 TLV320AIC3111 EVM + USB MODEVM ................................................................................. 32 Main Window ................................................................................................................. 53 Initialization Script ........................................................................................................... 74 Command Dialog ............................................................................................................ 85 Register Inspector ........................................................................................................... 96 Clock and Digital Signal Routing ......................................................................................... 117 Digital Configuration: Codec Clock / PLL ............................................................................... 128 Advanced Clock Settings. ................................................................................................. 139 Audio Interface .............................................................................................................. 1410 Automatic Gain Control .................................................................................................... 1511 DRC Transfer Function and DRC Dialog ............................................................................... 16
List of Tables
1 Analog I/O ................................................................................................................... 17
I2S, I2C are trademarks of Koninklijke Philips Electronics N.V.Windows is a trademark of Microsoft Corporation.
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1 EVM Overview
1.1 Introduction
1.2 Box Contents
1.3 Related Documentation From Texas Instruments
EVM Overview www.ti.com
2 Jumpers ..................................................................................................................... 173 Expansion Connectors P4/J4 ............................................................................................. 184 Expansion Connectors P5/J5 ............................................................................................. 185 Power Supply ............................................................................................................... 19B-1 USB-MODEVM Bill of Materials .......................................................................................... 24C-1 USB Control Endpoint HIDSETREPORT Request .................................................................... 26C-2 Data Packet Configuration ................................................................................................ 26C-3 GPIO Pin Assignments .................................................................................................... 29
The TLV320AIC3111 EVM features a TLV320AIC3111 stereo audio codec, amplifiers for speakers andheadphones and a digital signal processing module.
Together with the USB-MODEVM board, the TLV320AIC3111 Control Software and a PC runningWindows XP, it is a plug-and-play solution to evaluate the capabilities of the TLV320AIC3111.
The USB-MODEVM board contains a TAS1020B streaming audio USB controller, which enumerates as aUSB audio class device.
When the USB-MODEVM + TLV320AIC3111 EVM is connected to a PC running Microsoft Windows XP, itwill be recognized as a sound card. Once the TLV320AIC3111 is configured using the TLV320AIC3111control software, any audio playback and record software on the PC that uses the Windows audiosubsystem (sound card) can use the TLV320AIC3111.
The following items ship with the TLV320AIC3111 EVM:•TLV320AIC3111 EVM•USB-MODEVM
The control software required to operate the EVM is available from the TLV320AIC3111 product folder athttp://www.ti.com
TLV320AIC3111 data sheet (SLAS644 )
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2 EVM + PC
2.1 EVM Preparation
TLV320AIC3111EVM
SW2
J9 right speaker
J6 ext in
USB-MODEVM
J14
J8 left speaker
Headset
J7 USB
ON OFF
microphone
2.1.1 Analog Signal Connections
2.2 Control Software
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This chapter explains how to use the TLV320AIC3111 EVM with a PC running Windows XP.
To interface the TLV320AIC3111 EVM with a PC using USB, plug the TLV320AIC3111 EVM onto theUSB-MODEVM as shown in Figure 2 1. TLV320AIC3111 EVM + USB MODEVM.
Figure 1. TLV320AIC3111 EVM + USB MODEVM
Note: USB-MODEVM configuration
To control the TLV320AIC3111 from the PC via the USB-MODEVM, set switch SW2 position1, 3, 4, 5, 6, 7 to ON and position 2 and 8 to OFF.
•Connect a headphone to J14 (3,5 mm jack)•Connect 8- Ωspeakers to J8 and J9 (two 3-screw terminals)– Left speaker to SPLN and SPLP– Right speaker to SPRN and SPRP•By default, the on-board microphone is connected to the ADC. To use the line input (J7), refer to sheet1 of the AIC3111_RHB_EVM schematics (chapter 3.2)
The TLV320AIC3111 control software exposes most features of the TLV320AIC3111 through an intuitivegraphical user interface.
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2.3 Installation
2.4 Concepts
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Note: Before Windows on the PC can use the TLV320AIC3111 EVM as a sound card, theTLV320AIC3111 on the EVM must be configured (sampling rate, audio routing, internalamplifier settings etc.) with the TLV320AIC3111 control software.
Download the TLV320AIC3111 control software (SLAC289 ) from the TLV320AIC3111 product folder athttp://www.ti.com and launch the program (SLAC289 ).
This file is a self-extracting archive. The default target folder is:
C:\Program Files\Texas Instruments\AIC3111Click the Unzip button to complete the installation.
The TLV320AIC3111 control software is now available in the target folder. The name of the executable isCodecControl.exe
To launch the TLV320AIC3111 control software, navigate to the target folder with the Windows Explorerand double click CodecControl.exe.
The TLV320AIC3111 control software presents a block diagram view of the TLV320AIC3111 (or selectmodules within the TLV320AIC3111).
The block diagram consists of active objects that can react to user input (for example switches oramplifiers with variable gain that show a volume control on a mouse click event).
Note: Each active object will change color to red if the mouse cursor is above the object. Clickingthe object will trigger its function.
Some active objects are linked to control register(s) of the TLV320AIC3111 in a two way fashion. If anEVM is connected, the control software will update the appropriate register(s) whenever an active object istriggered. If a register that is linked to an active object is changed via other components (for example thescript interpreter or the register inspector), the active object will change its state accordingly.
The control software will automatically detect a TLV320AIC3111 EVM once it is connected to a USB portof the PC.
If no TLV320AIC3111 EVM is connected to the PC, the control software changes to a simulation mode,where it is possible to retrieve script commands based on user input within the block diagram.
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2.5 Main Window
•Full featured TLV320AIC3111
•Playback only
•Record only
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Figure 2. Main Window
At the top of the main window is a tool bar with buttons to change between four different use cases of theTLV320AIC3111:
By default, the control software displays the full featured block diagram of the TLV320AIC3111.
Each use case has its own initialization script, which will run if a use case is selected by clicking on one ofthe use case buttons. The initialization script contains register settings for the TLV320AIC3111 toconfigure the device for a specific use case.
The toolbar contains a control that determines the zoom factor. Change the zoom by selecting the desiredzoom factor.
To move the block diagram, click on a blank area within the block diagram and drag the diagram with themouse.
At the bottom of the main window is a status bar that provides information about the state of thecommunication between the control software and the TLV320AIC3111 EVM. It also shows hints aboutelements in the block diagram, for example the I2C page and register / bit location of a selected switch.
Audio signal paths (both digital and analog) will change color from black to•Blue for left audio output•Turquoise for right audio output•Magenta for audio input
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2.5.1 Using Active Objects
2.6 Dialogs and Active Objects
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once they are activated via switches. This feature visualizes all audio paths and immediately highlights if apath is disabled.
Moving the mouse pointer over an active object will light up the active object (the color of the object turnsred).
For example, the Class-A/B HP Driver left amplifier active object will turn from its inactive state to its activestate when the mouse pointer enters the amplifier symbol:
Clicking the activated object will trigger its function. In the case of the amplifier active object, the functionis a volume control. Moving the volume control slider changes the volume setting of the amplifier (it is alsopossible to change the volume by clicking onto the number within the amplifier symbol and typing the newgain setting).The control software updates the appropriate register in the TLV320AIC3111 and as a resultthe volume on the headphone output will change accordingly.
The TLV320AIC3111 control software contains several dialog windows that give access to additionalfeatures.
Most dialogs are linked to active objects and are opened by clicking on the active object.
A few dialogs are not linked to active objects and are opened using the View menu.
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2.6.1 Init Script Dialog
Each use case , , , owns a unique initialization script which will automatically run when a
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TLV320AIC3111 EVM is detected or if the user selects another use case.
To show or edit the initialization script, choose View->Init Script …from the main window menu bar.
Figure 3. Initialization Script
Click the Run button to run the script again. For further information about the script syntax, see Figure 3 .
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2.6.2 Command Dialog
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Open the command dialog (View->Command …) to write, edit, load, save and run command scripts.Command scripts are text files that contain commands to communicate with the TLV320AIC3111. Thesyntax is described in Figure 4 .
Figure 4. Command Dialog
•The main area of the command dialog is command buffer (editable text) which contains the commandscript. To run the command script, click the Run button.•The smaller read only text area on the right side of the command dialog displays control data readfrom the TLV320AIC3111. The Clear button clears the Read Data field.•The one line text edit field on the left bottom allows single command execution.•The Record check box enables recording of commands generated by the control software.
Figure 4 shows a recording of the volume control for the left Class-A/B HP Driver amplifier (note that theRecord checkbox is checked).
A single command to read four bytes starting at address 0x28 was executed and the result is displayed inthe Read Data field.
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2.6.3 Register Inspector
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The register inspector dialog (View->Register Inspector …) gives access to all registers of theTLV320AIC3111.
Figure 5. Register Inspector
The register inspector displays the content of the TLV320AIC3111 registers. The control software will readall TLV320AIC3111 registers when a TLV320AIC3111 EVM is detected. To force reading the content ofone page, click the Refresh button.•The Page edit field selects the page to be displayed.•The addr column shows the address of the registers within the selected page in decimal notation.•The description column contains a description for each register. If the register has no functionassigned, it is declared Reserved.•The data columns show the data of each register (one byte). The first data column uses decimalnotation, the second uses hexadecimal notation. It is possible to change the register value by clickinginto one of the data fields and typing the new value (either decimal or hexadecimal).•The numbered columns show the register content in binary notation. Read/Write bits are shown solidblack or red; read only bits are gray or dark red. Red numbers represent bits that recently changed. Tochange a single writeable bit, click on the bit and it will flip.
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2.6.4 DAC Filter
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One of the digital signal processing blocks of the TLV320AIC3111 implements five digital biquad filters.The DAC digital filter dialog (View->DAC Filter …) allows real time graphical manipulation of the digitalfilters.
The control software will automatically configure the digital signal processing block when the DAC digitalfilter dialog is opened.
The digital filter dialog limits the range of each digital biquad filter to +/-12[dB] (this is an arbitrary limitationfor demonstration purposes).•Each biquad has its own unique handle with a unique color. Each handle will light up white if themouse pointer is in the vicinity, showing that it can be selected. To change the frequency and gain of abiquad, grab and drag its handle.It is also possible to change the gain using the slider for each biquad.•Each biquad can be configured for parametric EQ, Shelf Treble or Shelf Bass. If it is configured for EQ,press the shift key before selecting the handle to adjust the bandwidth of the EQ using the mousepointer.
•Due to digital range limitations, the biquads will automatically scale, if the biquad coefficients exceedthe limitations.
The coordinate system will shift accordingly to reflect the resulting attenuation.•To avoid clipping, add additional attenuation with the Attenuate slider.•To retrieve the biquad coefficients, open the command dialog (see 0) and check Record.
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