Nuvoton WAU8822/NAU8822 Audio Motherboard

Nuvoton WAU8822/NAU8822 Audio Motherboard
Nuvoton
WAU8822/NAU8822 Audio
Motherboard
Evaluation Board User’s Guide
WAU8822/NAU8822-EVB Manual Version 1.1
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February 22, 2013
Introduction
This system is a combination of hardware and software that enables fast and detailed evaluation
of Nuvoton audio products. The hardware consists of a base evaluation board and a daughter
card which contains the specific audio product to be evaluated. The daughter card system
enables the use of the same base motherboard hardware and software to evaluate many different
Nuvoton audio products. The software must be installed on a Windows based PC, and is
compatible with most PC products and versions of the Windows operating system.
Summary Hardware Description
The motherboard includes a wide range of audio, power, and data input/output connectors that
enable testing a very wide range of features and audio products. The motherboard kit includes a
USB cable and the specific daughter card that was ordered with the system.
In most applications, the motherboard can be entirely powered via the included USB cable, and
most testing can be done using only this cable as the power source. This system uses a large
amount of USB power, and should NOT be used with longer or unknown quality USB cables.
These can cause unreliable operation.
If additional daughter cards have been ordered with this system, it is strongly recommended to
first install the software and test the system using the pre-installed daughter card. The
motherboard and pre-installed daughter card have been carefully tested together, and it is best to
fully verify the hardware/software system is working before changing to a different daughter card.
Summary Software Description
The supporting software includes many features that enable quick and thorough evaluation of the
various supported Nuvoton audio products. The software includes easy-to-use predefined
configurations, an intuitive GUI user interface, and also detailed register and bit manipulation
controls to facilitate every technical level of device operation and evaluation.
Depending on how this system was ordered and delivered, software may either be provided on
an included CD-ROM, or may be separately downloaded via the Internet. The software must be
installed on a Windows based PC system. Downloaded versions of the software will require a
Username and Password in order to start the installation process. Normally, this login information
will have been provided in advance by a Nuvoton sales representative.
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TABLE OF CONTENTS
1.
2.
3.
4.
5.
Hardware Overview ................................................................................................. 6
Software Installation and Set-Up ............................................................................. 7
PC Configuration ..................................................................................................... 8
Running the GUI Application ................................................................................... 9
Getting Started Using the GUI Application ............................................................. 10
5.1.
DEMO Panel Status Indicators ...................................................................... 10
5.1.1.
Device Attached/Detached Indicator ...................................................... 10
5.1.2.
Power Up Indicator................................................................................. 11
5.1.3.
Busy Indicator ........................................................................................ 11
5.2.
Introduction to Main Menu Bar ....................................................................... 11
5.2.1.
Device .................................................................................................... 11
5.2.2.
Mode ...................................................................................................... 11
5.2.3.
Config .................................................................................................... 11
6. The Control Tabs ................................................................................................... 12
6.1.
Demo Panel ................................................................................................... 12
6.1.1.
Step 1: Configure ................................................................................... 13
6.1.2.
Step 2: Load Settings ............................................................................. 13
6.1.3.
Step 3: Evaluate ..................................................................................... 13
6.1.4.
Demo Example for WAU8822 ................................................................ 14
6.2.
Path View Control Panel ................................................................................ 14
6.2.1.
Description of Special Icons in Path View............................................... 15
6.2.2.
Path View Navigation Shortcuts ............................................................. 15
6.3.
Device Control Panel ..................................................................................... 16
6.3.1.
Device Settings ...................................................................................... 17
6.3.2.
Board Settings ....................................................................................... 18
6.3.2.1. Command Interface ............................................................................ 18
6.3.2.1.1. External Control ........................................................................... 19
6.3.2.2. I2S Signal Connection ........................................................................ 19
6.3.2.2.1. Digital Audio Reset ...................................................................... 19
6.3.2.2.2. I2S Master ................................................................................... 19
6.3.2.2.2.1. On-Board USB ...................................................................... 19
6.3.2.2.2.2. Audio Precision I2S Master ................................................... 19
6.3.2.2.2.3. Digital Audio Master .............................................................. 19
6.3.2.2.3. I2S Slave ..................................................................................... 20
6.3.2.2.3.1. Audio Precision Slave Mode ................................................. 20
6.3.2.2.3.2. Digital Audio Slave ................................................................ 20
6.3.2.2.4. Direct Digital Audio Interface Header Enable ............................... 20
6.3.3.
Power Management ............................................................................... 21
6.4.
Input Path Control Panel ................................................................................ 22
6.4.1.
Microphone Bias .................................................................................... 22
6.5.
ADC/Filtering Control Panel ........................................................................... 23
6.6.
Equalizer Control Panel ................................................................................. 24
6.7.
Input Limiter and ALC Control Panel .............................................................. 25
6.8.
DAC/PLL/Digital Audio Control Panel ............................................................ 26
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6.8.1.
DAC Control ........................................................................................... 27
6.8.1.1. Oversampling ..................................................................................... 27
6.8.2.
PLL Control ............................................................................................ 28
6.8.2.1. REFIMP ............................................................................................. 28
6.8.2.2. FS (Frame Sync) ................................................................................ 29
6.8.2.3. Clock Prescalers ................................................................................ 29
6.8.2.4. Config PLL ......................................................................................... 29
6.8.3.
Digital Audio Control .............................................................................. 30
6.8.3.1. Clock Generation Control ................................................................... 30
6.8.3.1.1. CLKIOEN Master Mode ............................................................... 30
6.8.3.1.2. CLKM Master Clock ..................................................................... 31
6.8.3.1.3. BCLKSEL .................................................................................... 31
6.8.3.1.4. SMPLR Sample Rate ................................................................... 31
6.8.3.2. Companding Control .......................................................................... 31
6.8.3.2.1. PASSTHRU ................................................................................. 31
6.8.3.3. Audio Interface Control ....................................................................... 31
6.8.3.4. Jack Detect Bus Switching ................................................................. 31
6.9.
Output Path Control Panel ............................................................................. 32
6.10. Register Map Control Panel ........................................................................... 33
6.10.1. Register Map Bit Control ........................................................................ 34
6.10.1.1.
Register Map Update Bits (write-only bits) ...................................... 34
6.10.2. Audio Codec Register Control ................................................................ 34
6.11. Script Control Panel ....................................................................................... 35
6.11.1. Script Panel Structure ............................................................................ 35
6.11.2. Script Panel Syntax ................................................................................ 35
7. Daughter Card System .......................................................................................... 36
7.1.
Changing Daughter Cards ............................................................................. 36
7.2.
WAU8822 Daughter Card .............................................................................. 36
8. Jumpers and Connectors....................................................................................... 38
8.1.
Power Related Connectors and Options ........................................................ 38
8.1.1.
Summary of Power Options and Limits .................................................. 39
8.1.2.
Main 5Vdc Power ................................................................................... 39
8.1.3.
Power LINK Jumpers ............................................................................. 40
8.2.
Analog Inputs for WAU8822........................................................................... 41
8.3.
Analog Outputs for WAU8822 ........................................................................ 42
8.3.1.
Analog Output Options for WAU8822 ..................................................... 43
8.3.1.1. Headphone Detect ............................................................................. 44
8.3.1.2. Headphone Virtual Ground ................................................................. 44
8.3.1.3. DC Coupled Headphone Outputs ....................................................... 44
8.3.1.4. Ear Speaker Mode ............................................................................. 44
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8.4.
Digital Audio Using the WAU8822.................................................................. 45
8.4.1.
WAU8822 Master Clock Requirement .................................................... 45
8.4.2.
Master Clock Selection........................................................................... 45
8.4.3.
Frame Sync (Sample Rate Clock) .......................................................... 45
8.4.4.
Bit Clock (BLCK) .................................................................................... 45
8.5.
Digital Audio Input .......................................................................................... 45
8.5.1.
Formatted Digital Audio .......................................................................... 46
8.5.2.
USB Audio ............................................................................................. 46
8.5.3.
Unformatted Audio ................................................................................. 46
8.6.
Digital Audio Output ....................................................................................... 47
8.6.1.
Formatted Digital Audio .......................................................................... 47
8.6.2.
USB Audio ............................................................................................. 47
8.6.3.
Unformatted Audio ................................................................................. 47
8.7.
Digital Audio Related Connector Options ....................................................... 48
8.8.
USB and External Control CONNECTIONS ................................................... 49
8.8.1.
Special Connectors ................................................................................ 49
8.9.
Jumpers ......................................................................................................... 50
8.10. Table of Jumper Options ................................................................................ 51
8.11. Test Points..................................................................................................... 52
8.12. Table of Test Points ....................................................................................... 53
9. WAU8822-EVB Schematics (High Resolution Images) .......................................... 54
10.
LIST OF FIGURES ............................................................................................ 63
11.
LIST OF TABLES .............................................................................................. 63
12.
VERSION HISTORY.......................................................................................... 64
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1. Hardware Overview
All instructions in this guide require some familiarity with the physical layout of the motherboard
and daughter card. This information is introduced as needed, so it is not necessary at first to
memorize or understand the complete layout and functions of the hardware.
However, to get started, a few basic inputs and outputs must be noted. The USB connector and
external audio inputs/outputs are highlighted in this section.
Control and power are supplied via the USB connector. When first learning how to use this
system, it is recommended to choose a simple audio input and output combination. One example
would be to input audio from a line level source such as a CD-audio player into the Aux inputs,
and to listen to the output on the headphone connector.
Figure 1: WAU8822-EVB SYSTEM
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2. Software Installation and Set-Up
The software is installed using a standard PC installation software program that has been
downloaded or supplied on a CD-ROM. The software installer is not an auto-start program, so it
is necessary to locate the single executable (type .exe) file and run this program manually.
If the installation software has been downloaded, the installer program will request a Username
and Password to complete the installation procedure. Normally, these will have been provided in
advance by a Nuvoton sales representative. Using a downloaded version of the software will
insure having the most recently released version of the program.
If no version of this GUI Application has been previously installed on the PC, components will be
added that enable the PC to recognize the Nuvoton USB audio hardware. Depending on the
operating system and configuration, it may be necessary to reboot the PC after the first-time
installation. If the installation program recommends rebooting the PC, it is best to do so.
However, a requested reboot can usually be ignored, and all components will operate correctly.
The software installation procedure does not overwrite or replace older versions of the GUI
Application software. In some cases, it may be desirable to keep older versions of the application
available while learning to use a newer version.
If it is preferred to remove older versions of the application, the software should be removed
BEFORE installing the new software. The reason is that the un-install process may remove
common shared library components needed by the newer version of the application. An
undesired version application can be removed (before installing a newer version) using the
standard un-install feature included in Windows PC "Add or Remove Programs" control panel.
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3. PC Configuration
IMPORTANT INFORMATION: The GUI Application software installation and configuration is
entirely automatic. However, because the EVB is registered with the PC as an "Audio Device,"
sound from inside the PC may automatically be routed to the Nuvoton EVB. The EVB is
registered as a USB audio device, because it has the capability to receive an audio stream over
the USB bus.
Thus, after plugging the EVB into a PC, audio inside the PC may appear to stop working or be
changed in ways that are surprising. Managing the PC audio routing will be especially important
if it is desired to use the PC as an audio source as part of the EVB evaluation process.
Therefore, it is important to understand how to manage and control the PC built-in software and
hardware audio features. What happens automatically, and the details of how to manage audio
inside the PC will vary depending on the Windows version and specific PC hardware. Further
details may be different if other audio hardware and or software has been installed on the PC.
In all Windows systems, the management of audio is similar. This is typically done using the
"Control Panel" option in the Start Menu, and then selecting the appropriate audio control icon or
menu item. It may also be possible to access the PC audio control panel by clicking or rightclicking on the speaker icon in the Task Bar, normally at the bottom of the PC screen.
After activating the audio control panel, there will be various options. There will be an option for
routing sound to and from the PC, and in this option there will be a list of possible audio devices.
The Nuvoton EVB is registered as an "Audio Device." It is possible other audio devices attached
to the PC may have the same or similar name. The Nuvoton EVB can be identified in this case
by unplugging/replugging into the PC to see which item is changed in the list of audio devices.
Again depending on the Windows system and configuration, any selection made in the control
panel may later be automatically changed by the PC system. Also, media player software may
not immediately recognize that the PC audio path has been changed. It is best to quit and then
restart any media player application after making a change to the audio routing using the PC
control panel.
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4. Running the GUI Application
After installation, and depending on the Windows operating system and installation options, an
icon to start the application may have been added to either or both the Desktop and Start Menu
locations. The program will always be available under the Run option in the Start Menu. The
application name will always start with the word "Nuvoton.”
The application may be started with or without the motherboard USB hardware attached. If the
motherboard is not attached, the application will run in a "software demo" mode that enables
becoming more familiar with the software.
After starting, the following start-up screen will be displayed.
The normal use of the application at this time is to click on the icon that matches the actual device
that is on the installed hardware daughter card. Clicking on this icon will then configure the
software to match the attached hardware, and after this, evaluation can begin immediately. The
next window that opens will be the DEMO page that is explained below.
Figure 2: GUI APPLICATION START-UP SCREEN
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5. Getting Started Using the GUI Application
After making the selection on the start-up screen to select the audio device to be evaluated, the
GUI Application will open to the Demo Panel screen. All panels are structured similarly and
include the Main Menu Bar, Control Tabs, and Status Indicators.
5.1. DEMO Panel Status Indicators
The Status Indicators are located in the lower left hand corner of every Control Tab screen.
These indicators are especially important, as they provide the highest level of system status.
Figure 3: DEMO PANEL OVERVIEW
5.1.1. Device Attached/Detached Indicator
The Status Indicator on the far left is the most important. This indicator will be Green when the
motherboard hardware is attached to the PC, and signals that the PC has recognized the
hardware and established communication with the hardware. If the indicator is white, then no
interaction with the motherboard or daughter card is possible.
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5.1.2. Power Up Indicator
The middle status indicator is the Power Up Indicator. This will be Green after the software has
powered up all elements on the motherboard necessary to interoperate with the daughter card. If
the indicator is white, then the motherboard and communications between the motherboard and
daughter card have not been set up, and no interaction with the daughter card is possible.
5.1.3. Busy Indicator
The status indicator on the right-hand side indicates when the GUI Application is making changes
to the motherboard and/or the daughter card. This will be Green when all changes are completed
and the hardware is configured for operation. This indicator will be white when the GUI
Application is busy making changes to the motherboard and/or the daughter card.
5.2. Introduction to Main Menu Bar
The Main Menu Bar is included on the Demo Panel, the start-up screen, and all other views. This
enables direct and quick access to some features common to all devices. Many of these features
are for more experienced users, and this section can be studied as needed at a future time.
5.2.1. Device
The Device menu allows changing the selected daughter card device without restarting the
application. This can be useful if the wrong device was accidentally selected, or it can be used to
switch daughter cards without restarting or powering down the hardware. However it is preferred
to power-down the hardware and restart the application to change daughter cards This more
conservative procedure will insure the greatest reliability for both the hardware and software.
5.2.2. Mode
The Mode selection is normally automatic and the user should NOT change this. This menu item
enables changing the hardware control bus protocol between the motherboard and the audio
device being tested.
The Mode feature is included for instances when the motherboard or daughter card hardware has
been custom modified to be hard-wired into a particular control bus configuration. Then, it is
important to have a top-level menu control to change this selection. The control bus modes are
explained in more detail in the section describing the Device Control menu tab functionality.
5.2.3. Config
The Config menu enables Exporting or Importing settings from a standard file stored on the PC
system. This feature saves only the settings for the audio device being tested, and not the
configuration of the motherboard itself. So, the motherboard must already be initialized and set
up in the desired mode before executing the Import function.
Export/Import is useful for saving configurations for future use, or for sharing configurations with
other users. It is also a convenient way to copy/paste a set of desired register settings from the
EVB environment directly into software used to control the device in the actual end product.
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6. The Control Tabs
All of the main features and many options are selected by choosing one of the Control Tabs. This
is the horizontal menu list immediately below the Main Menu. After the user selects the device,
the application automatically opens into the Control Tab for the Demo Panel. It is best to first
work with the Demo Panel to begin learning how to use this application and the other Control
Tabs. The following sections describe the functions of each Control Tab in more detail.
6.1. Demo Panel
The Demo Panel is important, because it enables complete, proven, and working examples of
how to configure the device on the daughter card. This panel also will automatically initialize the
EVB (if necessary) and do other initialization as may be needed to start up the device on the
daughter card. The idea of this panel is to be able to use the EVB with almost no understanding
of any other function of the EVB and its many options.
The Demo Panel breaks down operation of the EVB into three simple steps. These are grouped
together visually on the PC screen, and each group is labeled as a numbered Step.
Figure 4: DEMO CONTROL PANEL
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6.1.1. Step 1: Configure
The Configure selection enables selection of the input, as well as the entire path for audio from
the selected input, through all of the device options, and then to the output. The path descriptions
are listed in an abbreviated form to fit within the GUI display.
The Configure selection also enables choosing various possible outputs and output combinations
that will work with the selected input. These selections may be scrolled one-at-a-time using the
up/down arrows in the output selection area. They may also be selected directly by clicking on
the text of the output path that is shown. This will open a pop up a window showing all of the
possible output selections, and then the desired selection can be made directly.
6.1.2. Step 2: Load Settings
Clicking on this button will cause all of the desired settings to be loaded into the audio device
being tested. Additionally, any necessary changes to the EVB initialization or configuration will be
performed automatically at this time.
While the settings are being loaded, the Status Indicators at the bottom left of the screen may
change from Green to White. IMPORTANT: If the configuration was successfully completed, all
three Status Indicators will be Green, and the configuration is now ready for evaluation.
6.1.3. Step 3: Evaluate
The bottom portion of the screen includes a few controls that enable experimentation with some
of the settings that can be changed on the audio device being tested. These can be changed
using the GUI, and the effect on the device will be immediate. Do NOT push the "Load Settings"
button again while using this feature. This will cause all of the settings to revert to the original
selected Demo configuration.
At this time, it may be useful to select any of the other Control Tabs. These make available many
more controls and features that can be changed after the Demo selection has been loaded.
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6.1.4. Demo Example for WAU8822
In this example, the goal is to pass audio from the left and right auxiliary inputs, into the ADC,
from the ADC into the DAC, and then output to the headphones. This is accomplished by the
following three steps:
Choose: "L/R AUXIN => L/R AuxBstGain => L/RADC => L/RDAC => M Mixer =>
Select for the output: Headphone
Push the "Load Settings" button and verify all three Status Indicators change to Green
At this point, any line level audio input attached to the Aux inputs should be audible in a
headphone attached to the headphone jack. A suitable line level audio source would be the
output from a CD-audio player or other media player device.
6.2. Path View Control Panel
This panel shows in a graphical form the internal structure of the device being tested as it related
to the available input, output, and control pins on the device. This is a highly interactive panel,
and most of the features and controls are "clickable." This means that on the GUI screen you can
simply click on a functional block or path and change its settings. You can also use this panel to
see some of the settings that are currently in use.
Figure 5: PATH VIEW
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This panel is intended to be used after a full set of settings has already been loaded into the
device. This panel is difficult or impossible to use without having done this first. The main reason
for this is that power control features are in the "off" condition, and these are not all directly
available on the Path View.
To simplify use of the Path View, the Demo settings have been set up with all of the power control
features in the "on" condition. This makes the Path View simpler to use, because it may not be at
all obvious that a particular path is not working because one of the elements in the path does not
have power.
6.2.1. Description of Special Icons in Path View
Here is a summary of the "language" that can be used in this graphical environment:
The active path over which audio is enabled, is indicated by red colored
lines in the GUI. In some cases, the lines are clickable and the path can
be enabled/disabled simply by clicking on the line. This includes on/off
switches which are also clickable with the active path indicated in red.
A speaker icon indicates that an output or input block is enabled. The
disabled state will show the speaker icon with the international red
"crossed out" overlay.
Items for which a drop-down or pop-up menu will appear are marked with
a small down-arrow icon. This can be used to either view the current
setting or to change a setting.
On WAU8822 devices, some of the outputs can be in a "boost" or
"non-boost" gain configuration. This status is indicated near the output
icon with a red up-arrow symbol to indicate the Boost state, or a red
horizontal line symbol indicating the "Non-Boost" state.
Additionally, if a block is does not have power, this will be indicated by a
right-angle down-arrow icon. To reduce visual clutter on the display, the
"power-on" status is not shown. Because the Demo selections enable all
power to all blocks, no power-down icons will normally be seen. However,
if power is turned off using other Control Tabs, or the Path View is selected
before loading any settings into the device, then the power-down icons will
be visible.
6.2.2. Path View Navigation Shortcuts
Clicking on blocks in the GUI view that have many functions will in some cases cause the display
to switch to the Control Tab view appropriate for that block. This is a quick, powerful, and
convenient way to change features in a block too complex to show in this Path View.
After clicking on a block that switches to a different Control Tab view, changes can be made in
that view. When the changes are complete, simply right-click on the current Control Tab view,
and the display will automatically switch back to the Path View. The Path View will automatically
be updated to show any changes that were made in any of the other Control Tab panels.
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6.3. Device Control Panel
This panel modifies the basic configuration of both the motherboard and the audio device under
test. In general, these features are for advanced users. Except for the "Initialize Board,"
"Initialize Device," and "Device Control" radio buttons, other settings in this panel should not be
changed without a good understanding of the underlying functions.
The panel manages four basic groups of functions:
1)
2)
3)
4)
Radio button controls for motherboard and device management
Board Settings to select various motherboard hardware configuration options
Device Settings to select power options for high voltage WAU8822 outputs
Power Management features for the WAU8822 device
For less experienced users, the only Device Control radio buttons that should be used are the
"Initialize Board" and "Initialize Device" buttons. These set up the motherboard and device,
respectively, to basic starting conditions. These buttons may be most useful after having made
many changes, and the state of the motherboard or device is unclear.
Figure 6: DEVICE CONTROL OVERVIEW
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6.3.1. Device Settings
This changes the 5-volt or 3-volt settings of the WAU8822 outputs to match the actual voltage
supplied on the VDDSPK pin. Management of the power options is explained in other sections of
this document.
IMPORTANT: These settings should NOT be changed unless work is being done to change the
internal or external VDDSPK voltage. For reliable operation, it is very important that these
settings match the actual voltage on VDDSPK. The motherboard is set up by default to the 5-volt
settings for VDDSPK, and this default software selection matches this default configuration.
The other Device Control radio buttons change various features as indicated by the text in the
button. These change many different register values, and in many cases require a detailed
understanding of information in the device data sheet and/or design guide.
•
•
•
•
•
•
•
Reset: Writes to Register 0x00 of an WAU8822 device for its Reset condition
PowerUp: Turns on basic registers to put an WAU8822 device into an "on" condition
PowerDown: Sets an WAU8822 device into a low power "sleep" condition
MuteAllOutputs: Enables only the Mute function on WAU8822 outputs
EnableAllOutputs: Turns on power control bits for all outputs
DisableAllOutputs: Turns off power control bits for all outputs
LoadDefaultUpdateBits: Write to update bits to cause update feature to take place
Figure 7: DEVICE CONTROL PANEL - DEVICE SETTINGS
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6.3.2. Board Settings
These settings change the basic configuration of the motherboard communications with the
device on the daughter card. These can affect the control bus mode, the I2S audio data stream,
and also select external connectors as alternative sources and sinks for these signals.
IMPORTANT: Changes to this portion of the panel do NOT become effective until pushing the
"Config Board" radio button. This button is located at the bottom of this grouping of controls.
Figure 8: DEVICE CONTROL PANEL – BOARD SETTINGS
6.3.2.1.
Command Interface
This selects options for the control bus to the daughter card device. Normally, this selection is
automatic and these settings should not be changed unless there is a specific goal to work with
the command interface.
The listed options set up the motherboard and device on the daughter card to work together in
the indicated mode. Additionally, the speed of the I2C clock can be altered.
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6.3.2.1.1. External Control
In addition to the built-in interfaces, an external command interface control can be selected. In
this case, control to and from the daughter card is via the CONT. PORT, Connector J24. Bidirectional level shifters are used to connect the daughter card to this port instead of to the
internal port provided on the motherboard.
Coupled with the External Control is the ability to set the MODE pin on the WAU8822 device to
high or low. This feature is needed to set the control mode in the WAU8822 device as described
in the WAU8822 device design guide.
When using the CONT. PORT interface, an additional option exists to set the voltage used by the
level shifter. This is changed by the jumper on Connector J23. Pin #1 of this connector is
indicated by a square symbol on the PCB silkscreen.
6.3.2.2.
I2S Signal Connection
The I2S path is the serial data path for audio the digital audio signal to and from the device on the
daughter card. This feature is automatically handled, and should be changed only when specific
work is being done with the I2S bus.
6.3.2.2.1. Digital Audio Reset
A SPDIF controller chip is included on the motherboard for coupling audio to and from the device
on the daughter card using I2S serial data. Selecting this option will reset the SPDIF controller.
6.3.2.2.2. I2S Master
The motherboard can be configured as the I2S Master or I2S Slave, but not both at the same
time. In most applications, the motherboard will be the I2S Master. There are several options for
the signal source in I2S Master Mode.
6.3.2.2.2.1.
On-Board USB
When audio is streamed from the USB host (typically a PC computer), the USB controller device
on the motherboard is configured by this selection to be the I2S Master. When selecting USB
audio in the Demo Panel, this selection is made automatically.
It should be noted that the built-in USB controller supports only a monophonic data stream. In the
Demo Panel configuration, this same audio stream is output to both the left and right channels.
Also, the USB mode does NOT support streaming of audio from the daughter card to the PC.
6.3.2.2.2.2.
Audio Precision I2S Master
This control is for when I2S audio is streamed from an external master source connected to the
I2S_PORT, Connector J15. Bi-directional level shifters are selected by this option to connect the
daughter card to this port instead of to the internal port provided on the motherboard. External
equipment, such as an Audio Precision analyzer must be configured to be the I2S master.
6.3.2.2.2.3.
Digital Audio Master
This control is for when I2S audio is streamed from the SPDIF controller included on the
motherboard. Bi-directional level shifters are selected by this option to connect the daughter card
to the SPDIF controller, instead of to the USB I2S port also provided on the motherboard. When
selecting SPDIF audio in the Demo Panel, this selection is made automatically.
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6.3.2.2.3. I2S Slave
The motherboard can be configured as the I2S Master or I2S Slave, but not both at the same
time. In most applications, the motherboard will be the I2S Master. This section controls options
for the audio signal source in I2S slave mode.
6.3.2.2.3.1.
Audio Precision Slave Mode
This control is for when I2S audio is streamed to an external slave device connected to the
I2S_PORT, Connector J15. Bi-directional level shifters are selected by this option to connect the
daughter card to this port instead of to the internal port provided on the motherboard. External
equipment, such as an Audio Precision analyzer must be configured to be the I2S slave.
6.3.2.2.3.2.
Digital Audio Slave
This control is for when I2S audio is streamed to the SPDIF controller included on the
motherboard. Bi-directional level shifters are selected by this option to connect the daughter card
to the SPDIF controller, instead of to the USB I2S port also provided on the motherboard.
At the present time, the GUI Application software does not implement the ability for the SPDIF
controller to stream audio out from SPDIF_OUT, Connector J9.
6.3.2.2.4. Direct Digital Audio Interface Header Enable
This control connects the I2S port on the daughter card device directly to the I2S_PORT header
Connector J15, but does not configure the daughter card device I2S direction. The daughter card
device must be configured separately. Bi-directional level shifters are selected by this option to
connect the daughter card to the J15 header connector, and not to any of the I2S devices on the
motherboard.
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6.3.3. Power Management
This panel of controls gives direct access to the various power management bits available in the
WAU8822 device. Control of these bits is normally automatic. These bit controls are made
available here for convenient manipulation and evaluation of the power control features.
The function of each of these control bits is explained in detail in the WAU8822 device Design
Guide documentation. The names for each control in this panel match the names given to
specific control bits in the WAU8822 control registers. The description and function for each of
these bits can be found (most easily by doing a text string search) in the Details of Register
Operation appendix portion of the WAU8822 device Design Guide.
Figure 9: DEVICE CONTROL PANEL – POWER MANAGEMENT
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6.4. Input Path Control Panel
This Control Tab gives access to the various controls and settings for the analog audio input
routing, power management, and gain blocks up to, but not including, the ADC converters.
Control of these bits is normally automatic when using the Demo Panel. These bit controls are
provided here for convenient manipulation and evaluation of the input path features and settings.
The function of each of these control bits is explained in detail in the WAU8822 device Design
Guide documentation. The names for each control in this panel match the names given to
specific control bits in the WAU8822 control registers. The description and function for each of
these bits can be found (most easily by doing a text string search) in the Details of Register
Operation appendix portion of the WAU8822 device Design Guide. It can also be helpful to
switch to the Path View tab to better see how each of these controls affects the device settings
and routing.
Figure 10: INPUT PATH CONTROL PANEL
6.4.1. Microphone Bias
This section also provides control over the microphone bias circuit. This function provides lownoise DC power from the MICBIAS output pin that is normally used to power one or more external
microphones. The description and function for each of these bits can be found (most easily by
doing a text string search) in the functional descriptions, and also, the Detailed Register Map in
the WAU8822 device Design Guide.
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6.5. ADC/Filtering Control Panel
This Control Tab gives access to the various controls and settings in the ADC converter blocks.
Controls are also included here for the digital high pass filter, digital notch filter, and gain options
associated with the ADC function.
Control of these bits is normally automatic when using the Demo Panel. These controls are
provided in this panel for convenient manipulation and evaluation of the ADC section features and
signal processing settings.
The function of each of these control bits is explained in detail in the WAU8822 device Design
Guide documentation. The names for each control in this panel match the names given to
specific control bits in the WAU8822 control registers. The description and function for each of
these bits can be found (most easily by doing a text string search) in the Details of Register
Operation appendix portion of the WAU8822 device Design Guide. It can also be helpful to
switch to the Path View tab to better see how each of these controls affects the device settings
and routing.
Figure 11: ADC/FILTERING CONTROL PANEL
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6.6. Equalizer Control Panel
This Control Tab gives access to the various controls and settings for the Equalizer and 3-D
Audio digital signal processing blocks. This pair of functions may be applied to either the ADC
digital outputs, or to the DAC digital inputs, but not to both paths at the same time.
These features are explained in detail in the WAU8822 device Design Guide documentation.
Also, the names for each control bit in this panel match the names given to specific control bits in
the WAU8822 control registers as described in the detailed register map in the WAU8822 Design
Guide. The description and function for each of these bits can be found (most easily by doing a
text string search) in the Details of Register Operation appendix portion of the WAU8822 device
Design Guide.
This panel provides both graphical equalizer style controls and control panel style controls to
modify the Equalizer settings. A change in either type of control is reflected in both controls.
Additionally, a few Equalizer presets are provided in a scrolling window beneath the 3-D Audio
controls. These presets give some examples of the many ways to configure the Equalizer. When
a preset is applied, the settings for these are reflected in all of the control panels, and also, in the
register map.
Figure 12: EQUALIZER CONTROL PANEL
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6.7. Input Limiter and ALC Control Panel
This Control Tab gives access to the various controls and settings for the Input Limiter and ALC
signal control blocks.
The operation of each of these functions is explained in detail in the WAU8822 device Design
Guide documentation. Also, the names for each control bit in this panel match the names given
to specific control bits in the WAU8822 control registers as described in the detailed register map
in the WAU8822 Design Guide. The description and function for each of these bits can be found
(most easily by doing a text string search) in the Details of Register Operation appendix portion of
the WAU8822 device Design Guide.
Additionally, a few Equalizer presets are provided in a scrolling window beneath the 3-D Audio
controls. These presets give some examples of the many ways to configure the Equalizer. When
a preset is applied, the settings for these are reflected in all of the control panels, and also, in the
register map.
Figure 13: INPUT LIMITER AND ALC CONTROL PANEL
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6.8. DAC/PLL/Digital Audio Control Panel
This Control Tab manages three major functional groups: control of the DACs themselves,
management of the PLL and voltage reference that support the DACs, and miscellaneous
functions also related to operation of the DACs.
The operation of each of these functions is explained in detail in the WAU8822 device Design
Guide documentation. Also, the names for each control bit in this panel match the names given
to specific control bits in the WAU8822 control registers as described in the detailed register map
in the WAU8822 Design Guide. The description and function for each of these bits can be found
(most easily by doing a text string search) in the Details of Register Operation appendix portion of
the WAU8822 device Design Guide.
The GUI Application performs a few additional services not described in the Design Guide.
These are described in this section.
Figure 14: DAC/PLL/DIGITAL AUDIO PANEL OVERVIEW
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6.8.1. DAC Control
As mentioned in the heading of this section, the details of all of the functions and bits are
described in detail in the WAU8822 Design Guide and appendices. The bit names match this
documentation, and using a text string search in the Design Guide is a good method to quickly
locate specific information about a specific control bit function.
Figure 15: DAC/PLL/DIGITAL AUDIO PANEL – DAC CONTROL
6.8.1.1.
Oversampling
DAC and ADC performance is optimized when both are operated at the same oversampling rate.
An added feature of the GUI Application is that when either the ADC or DAC oversampling rate is
changed, both are changed by the application. If it is desired to make the ADC and DAC operate
at different oversampling rates, this can be done using the Register Map control tab.
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6.8.2. PLL Control
The PLL is one of the most powerful and also most difficult to understand features of WAU8822
devices. It is important to understand carefully the detailed information regarding the PLL that is
included in the WAU8822 Design Guide.
As mentioned in the heading of this section, the details of all of the functions and bits are
described in detail in the WAU8822 design guide and appendices. The bit names match this
documentation, and using a text string search in the Design Guide is a good method to quickly
locate specific information about a specific control bit function.
Figure 16: DAC/PLL/DIGITAL AUDIO PANEL – PLL CONTROL
6.8.2.1.
REFIMP
The PLL cannot be enabled unless the reference impedance is enabled. This is part of the power
management functionality to help minimize power consumption when the device is put into a nonoperating mode.
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6.8.2.2.
FS (Frame Sync)
This is the pin name and bit name for the Frame Sync function. The FS rate is normally the same
as actual sampling rate intended for the device. However, FS is simply the rate at which samples
are transmitted over the I2S or PCM digital audio bus. It is not inherent in the device that the
ADC and DAC are actually also operating at the FS sample rate.
The FS rate can be left as Default, or selected to be Custom. In either case, this section of the
PLL Control features will set up the PLL to operate the ADC and DAC at the desired sample rate.
If the device is set to be the bus master, then FS will be exactly the specified sample rate.
If the device is in "slave" mode, best performance will be achieved when the FS signal is phase
locked with the ADC and DAC and operating at the same exact sampling rate. The default
configuration for the PLL is to convert a 12.000MHz external MCLK into an internal 12.288MHz
signal for the internal IMCLK signal, which sets a 48.000kHz sample rate for both the ADC and
DAC. The ADC and DAC always have the same sampling rate.
6.8.2.3.
Clock Prescalers
Choosing the optimum prescale values and PLL coefficients is a complex process linked to the
details of the configuration and desired operation of the end-product system. As an aid to this
process, the GUI Application can be asked to automatically determine the best PLL parameters.
However, this needs to be checked against the instructions in the Design Guide, because the
automatic calculation may not guess correctly the entire desired configuration. As a further aid,
the clock prescalers can be set to "Fixed" or "Auto." If set to "Auto,” the Calculate function will
make its best guess how to set the prescaler value. If set to "Fixed," the Calculate function will
use the prescaler value set in this control panel.
6.8.2.4.
Config PLL
This radio button causes all manually entered or automatically determined PLL parameters to be
loaded into the PLL control registers. No change to the PLL control registers is made until the
button is activated.
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6.8.3. Digital Audio Control
Figure 17: DAC/PLL/DIGITAL AUDIO PANEL – DIGITAL AUDIO CONTROL
6.8.3.1.
Clock Generation Control
The Clock Generation Control block sets up the relationship of the ADC and DAC to the FS and
BLCK digital audio data bus signals. It is important to understand carefully the detailed
information regarding this, which is in the PLL description in the WAU8822 Design Guide.
As mentioned in the heading of this section, the details of all of the functions and bits are
described in detail in the WAU8822 design guide and appendices. The bit names match this
documentation, and using a text string search in the Design Guide is a good method to quickly
locate specific information about a specific control bit function.
6.8.3.1.1. CLKIOEN Master Mode
Selecting this control bit will cause WAU8822 device to drive the FS and BCLK pins as the
master of the I2S or PCM digital audio data bus. If this is not selected, the WAU8822 device will
be the slave of the digital audio data bus and the FS and BLCK pins will be used as inputs to the
WAU8822 device.
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6.8.3.1.2. CLKM Master Clock
Selecting this control bit will cause the WAU8822 device to use the PLL output as the input to its
Master Clock (IMCLK) Prescaler. If this is not selected, the IMCLK Prescaler will use the signal
on the external MCLK pin as its input.
6.8.3.1.3. BCLKSEL
This has an effect only if the WAU8822 device is the audio bus master. When the device is the
audio bus master, the internal IMCLK rate will be divided by the factor set in this panel, and this
will become the rate of the FS signal on the FS output pin.
6.8.3.1.4. SMPLR Sample Rate
This control value does NOT change the sampling rate in any way. The SMPLR value exists
because the digital signal processing algorithms have no information to know the actual physical
sample rate. This is determined by the external MCLK frequency. The only function of the
SMPLR value is to scale the ADC high pass filter coefficients to be compensated for the actual
sample rate of the system. If SMPLR is set correctly, then the high pass filter cutoff frequency will
be the desired value as listed in the WAU8822 Design Guide. The Equalizer cutoff frequencies
have no such compensation. The nominal Equalizer cutoff frequencies in the design guide are
for a 48kHz sample rate. For example, if the actual sample rate is 24kHz, then the Equalizer
cutoff frequencies will be one half of the values listed for 48kHz in the Design Guide.
6.8.3.2.
Companding Control
Companding implements a non-linear compression/decompression of the audio signal as
explained in the WAU8822 device Design Guide. Most applications for the WAU8822 will not use
this feature.
6.8.3.2.1. PASSTHRU
When enabled, the pass-through mode causes data from the left and right ADC outputs to flow
directly into the digital signal processing chain for the DAC output section. In this mode, data on
the DACIN pin are ignored and replaced with data from the corresponding ADCs. ADC data
continues to be output on the ADCOUT pin.
6.8.3.3.
Audio Interface Control
These controls affect how audio data are formatted and input or output on the serial digital audio
bus and are explained in the device Design Guide. The "MONO" control does not affect
formatting. This feature may be useful when only the left ADC is being used, and it is important
to guarantee that the right channel information is exactly zero.
6.8.3.4.
Jack Detect Bus Switching
These controls affect various options related to the jack detection feature as detailed in the device
Design Guide. The idea of jack detection is that a logic level change can be sensed on one of the
GPIO pins, and this change will then enable/disable specified outputs and power control blocks.
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6.9. Output Path Control Panel
This Control Tab gives access to the various controls and settings for the analog outputs, and the
analog mixers that work together with the analog outputs.
The operation of each of these functions is explained in detail in the WAU8822 device Design
Guide documentation. Also, the names for each control bit in this panel match the names given
to specific control bits in the WAU8822 control registers as described in the Design Guide
detailed register map. The description and function for each of these bits can be found (most
easily by doing a text string search) in the Details of Register Operation appendix portion of the
WAU8822 device Design Guide.
Figure 18: OUTPUT PATH CONTROL PANEL
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6.10.
Register Map Control Panel
When the Register Map control tab is selected, all of the bits in all of the registers will be
displayed corresponding to the current settings in the device. In the case of any write-only bits, or
in the case when the control bus is write-only (register values cannot be read back by software),
the values displayed are values that are remembered by software, and that should be the same
as the actual values used by the device.
If there is ever any uncertainty whether or not the values in the display truly reflect the values in
the physical device, and if the control bus allows reading from the device, the display values can
be refreshed by selecting the "Read All and Update" radio button in the “Audio Codec Register
Control" panel. This will read all of the registers from the device, and all bits values that can be
read from the device will then be updated in the GUI display to be the same.
Figure 19: REGISTER MAP CONTROL PANEL OVERVIEW
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6.10.1.
Register Map Bit Control
In this view, any bit can be selected and altered. The changed value will be written to the actual
device control register by hitting the "enter" or "return" key on the PC keyboard, or by simply
moving the cursor to a different bit field. When any of these completing actions is done, the
hexadecimal value column entry for that register will also be updated.
In this view, hexadecimal values may also be directly changed in the "Hex Val" column. The
changed value will be written to the actual device control register by hitting the "enter" or "return"
key on the PC keyboard, or by simply moving the cursor to a different bit field.
6.10.1.1. Register Map Update Bits (write-only bits)
The bits known as "update bits" are commands to the device that are not physically stored in the
device control registers. These bits are displayed in the Register Map view as the present user
preference. This preference may be altered at any time. When writing the device from the
Register Map view, the displayed preferences for each update bit will be used when writing the
respective register which contains that update bit.
Figure 20: REGISTER MAP CONTROL DETAILS
6.10.2.
Audio Codec Register Control
This panel gives simple hexadecimal read and write control to all of the registers in the device.
Both the register address and register data are in hexadecimal format. If the control bus is set up
in a write-only format, then reading the device is not possible, and attempts to read the device will
result in an error message from the GUI Application software.
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6.11.
Script Control Panel
In all of the other Control Tabs, any time sequencing of operations to the device is automatic.
This panel enables creating specific sequences of any specified register write operations. Only
the commands in the script are executed, so the codec may already be configured using the other
controls and panels. Then the script will modify what is already in the codec. This simplifies the
script, because the script does not necessarily have to set up the entire codec.
6.11.1.
Script Panel Structure
The main body of this panel contains the script to be executed, and at the top of the panel are
three the radio button controls. The "Run" command will cause the entire script to be executed at
that time. The "Save" command will save the current script into short term system memory (but
not as a file). The "Load" command will recall an existing script from short term memory.
Figure 21: SCRIPT CONTROL PANEL
6.11.2.
Script Panel Syntax
The script panel has a simple syntax. Each line contains a register address in hexadecimal form,
followed by an equals sign, then followed by another hexadecimal value to be written into that
register. The hexadecimal values are the same 9-bit long values as are shown in the Register
Map view and device register level documentation.
Lines are separated by carriage returns (new line or "enter" on the PC keyboard).
Comments are limited to one line and are any text preceded by a semicolon.
A time delay can be inserted by using negative 1 (hexadecimal 0x-1) as the register address
followed by an equal sign and then an integer decimal value. In this case, the script program will
pause for the duration of the decimal value in milliseconds.
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7. Daughter Card System
The daughter card is the small PCB mounted onto a socket connector on the main EVB
motherboard, and this contains the device being evaluated. This arrangement enables a single
EVB hardware and software system to support testing of a very wide range of Nuvoton audio
products in a consistent, stable, and easy to use environment.
7.1. Changing Daughter Cards
If it is desired to use a different daughter card on the system, it is best to first completely remove all power
connections to the EVB. Then, simply remove the existing daughter card and insert the new daughter card
in the same location.
IMPORTANT: When inserting the new daughter card, make certain that the Pin #1 alignment matches the
Pin #1 location indicated on the motherboard. Also, be careful to mount the daughter card so that all four
rows of connectors are in fact connected. It is possible to offset the daughter card horizontally so that some
rows are connected and other rows are not connected.
A good technique to insert a new daughter card is to hold the card at an angle so that it can be
seen clearly visually that one row is completely and correctly aligned. After this first row begins to
become connected, then in a rolling or rotating motion, swing the daughter card so that it is
parallel with the motherboard and push to engage all of the other connectors.
7.2. WAU8822 Daughter Card
The new style WAU8822 daughter card includes series resistors on all of the low-current analog
and digital signal paths. Most are zero-ohm resistors, but some have a small value to optimize
clock signal integrity. A schematic diagram of the daughter card is included for reference.
The series resistors make it easy to modify the daughter card for experimentation, eliminating the
need to cut actual foil traces on the PCB. Additionally, test points are included for:
* digital ground (convenient for attaching test equipment)
* analog ground (important for precise analog performance measurement)
* Vref (AC and DC voltage reference used by the device)
A built-in microphone is also included on the new style daughter card. This can be connected by
moving the two left microphone path jumpers, J11 and J14, from the normal location on the EVB
onto the J1 and J2 pin-pairs on the daughter card as shown in the picture below. The Demo
panel option for microphone input will now operate using the built-in microphone.
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Figure 22: WAU8822 DAUGHTER CARD; AS ORIENTED ON EVB; WITH MIC ENABLED
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8. Jumpers and Connectors
The EVB motherboard has many jumpers and connectors for maximum flexibility. These enable
various combinations of internal/external power, simplify power measurements, change audio
paths, change external command and control paths, and enable external streaming of audio data
to and from the device on the daughter card.
8.1. Power Related Connectors and Options
The main power supply for the EVB and each regulated supply that supports the daughter card
can be replaced with an external power supply connection. This makes it easy to test alternative
power configurations.
WARNING: The EVB is carefully designed to keep built-in power supply combinations within safe
limits for the device on the daughter card. When using external power supply sources, extreme
care must be used to make certain that the maximum power supply limits and power supply
combination voltages on the device under test are never exceeded. Excessive power or incorrect
power combinations may destroy both the daughter card and the motherboard.
Figure 23: POWER RELATED CONNECTORS AND OPTIONS
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8.1.1. Summary of Power Options and Limits
IMPORTANT: Physical orientation of the various power selection jumpers is NOT the same.
Each jumper must be examined carefully to determine its Pin #1 designator and orientation. The
connector Pin #1 is marked with a white square in the silkscreen pattern on the PCB.
Connector
Name
Signal
Name
Supply Range
and Limits
Option
Jumper
Name
Power optioning description
Important: Note carefully the differing
pin #1 positions on each jumper
Power is normally supplied entirely from the USB host.
Series diodes will substitute power from the greater of
either P1 or from J26 if either source is greater than
5Vdc from the USB host.
Note: There is no jumper for this option. Series diodes
pass power from P1 if this voltage is greater than 5Vdc
coming from USB
CON1
USB
USB host limited
n/a
P1
5vDC Center Pin =
Positive (+V)
0.0Vdc to 5.5Vdc
n/a
J6
DGND
0V (digital ground)
n/a
n/a
J18
EXT_VDDC
1.6Vdc to 3.6Vdc
J17
Pin 1-2 shorted selects External VDDC via J18
Pin 3-4 shorted selects VDDC=VDDB
Pin 5-6 shorted selects VDDC=1.8Vdc
J19
EX_VDDA
J21
Pin 1-2 shorted selects external VDDA via J19
Pin 2-3 shorted selects VDDA = 3.3Vdc
J20
Pin 1-2 shorted selects External VDDB via J22
Pin 2-3 shorted selects VDDB=3.3Vdc
J22
EXT_VDDB
2.5V to 3.6V
VDDA must be ≥
VDDC
1.8V to 3.6V
VDDB must be ≥
VDDC
J26
EXT_+5V_IN
0.0Vdc to 5.5Vdc
n/a
J36
EX_VDDSPK
2.5V to 5.0V
J25
Note: There is no jumper for this option. Series diodes
pass power from J26 if this voltage is greater than 5Vdc
coming from USB
Pin 1-2 shorted selects external VDDSPK via J36
Pin 3-4 shorted selects built-in 5.0Vdc
Pin 5-6 shorted selects VDDSPK = VDDA
Default factory configuration highlighted in color
Table 1: POWER OPTIONS
8.1.2. Main 5Vdc Power
All power is usually supplied to the WAU8822-EVB USB interface via the USB connector. It
should be noted that the voltage supplied via USB is nominally 5Vdc. However, this voltage
supplied by the external USB host may be significantly less, especially if driving a loudspeaker at
high volume using the device on the daughter card.
With most USB host devices and USB cables, it is not possible to achieve the full rated 1-Watt of
loudspeaker power using only USB as the power source. Additionally, long or poor quality USB
cables can cause the EVB to operate unreliably. The USB cable used with the EVB should be a
high quality product and not longer than 1-meter.
If the primary purpose to use alternative power is to drive the speaker output to the full rated
power, it is preferred to simply substitute an external supply for VDDSPK via J36. EVB operation
is simpler if the main 5Vdc power other than for VDDSPK is supplied from the USB host.
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8.1.3. Power LINK Jumpers
Each power rail between the motherboard and the daughter card passes through a Link jumper.
If this jumper is removed, the power connection is completely disconnected. These jumpers are
useful as a point to measure power rail supply current, or to substitute external power directly to
the device on the daughter card with no connection at all to any component on the motherboard.
On newer revisions of the EVB motherboard, the LINK jumpers are a red color plastic.
Jumper
Supply
Name
Jumper Selection
LINK2
VDDC
Removing jumper completely disconnects DC path for VDDC from motherboard
LINK3
VDDA
Removing jumper completely disconnects DC path for VDDA from motherboard
LINK4
VDDB
Removing jumper completely disconnects DC path for VDDB from motherboard
LINK5
VDDSPK
Removing jumper completely disconnects DC path for VDDSPK from motherboard
Table 2: POWER LINK JUMPERS
Figure 24: POWER LINK JUMPERS
WAU8822/NAU8822-EVB Manual Version 1.1
Page 40 of 64
February 22, 2013
8.2. Analog Inputs for WAU8822
The analog inputs connect via passive components to pins on the daughter card. All paths are
AC coupled, and passive components are typically transparent (such as zero-ohm resistors and
RF bypass capacitors) at audio frequencies. Some paths may also pass through a jumper
selection as outlined in this documentation.
In most cases, the analog inputs may be used intuitively without the need to know further details
of the actual path through the EVB. The EVB schematic is included and readily available if
further detailed understanding is needed.
Figure 25: ANALOG INPUTS
Jack
Name
J1
Line In
J2
Phono Right
J3
Phono Left
J4
Auxin
J12
Stereo Mic /
Right Mic
J16
Left Mic
Connector
Daughter
card
Pin
Jumper
To
Connect
RCA jack - top
RCA jack - bottom
RCA jack - top
RCA jack - bottom
RCA jack - top
RCA jack - bottom
RCA jack - top
RCA jack - bottom
3.5mm jack - tip
3.5mm jack - ring
3.5mm jack - sleeve
3.5mm jack - tip
3.5mm jack - ring
3.5mm jack - sleeve
H1,3
H1,6
H1,5
H1,4
H1,2
H1,1
H4,3
H4,4
H1,4
H1,1
H1,5
H1,1
None
H1,2
None
None
J10: 2-3
J12: 2-3
J11: 2-3
J14: 2-3
None
None
J13: 1-2
Link1=on
J10: 1-2
J14: 1-2
None
J11: 1-2
Function and
Signal Name / Device Pin Number
on WAU8822
Left Line Level Input:
Right Line Level Input:
Right Inverting Mic Input:
Right non-Inverting Mic In:
Left Inverting Mic Input:
Left non-Inverting Mic In:
Left Auxiliary Line Input:
Right Auxiliary Line Input:
Right non-Inverting Mic In:
Left non-Inverting Mic In:
Right Inverting Mic Input:
Left non-Inverting Mic In:
No connection
Left Inverting Mic Input:
LLIN: Pin #3
RLIN, Pin #6
RMICN, Pin #5
RMICP, Pin #4
LMICN, Pin #2
LMICP, Pin #1
LAUXIN, Pin #19
RAUXIN, Pin #20
RMICP, Pin #4
LMICP, Pin #1
RMICN, Pin #5
LMICP, Pin #1
LMICN, Pin #2
Default factory configuration highlighted in color
Table 3: ANALOG INPUTS
WAU8822/NAU8822-EVB Manual Version 1.1
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February 22, 2013
8.3. Analog Outputs for WAU8822
The analog outputs connect via passive components to pins on the daughter card. All paths are
AC coupled, and passive components are typically transparent (such as zero-ohm resistors and
RF bypass capacitors) at audio frequencies. Some paths may also pass through a jumper
selection as outlined in this documentation.
In most cases, the analog outputs may be used intuitively without the need to know further details
of the actual path through the EVB. The EVB schematic is included and readily available if
further detailed understanding is needed.
Daughter
card
Pin
Jumper
To
Connect
RCA jack - top
RCA jack - bottom
H1,3
H1,6
J30: 1-2
J31: 1-2
Left Line Level Output:
Right Line Level Output:
3.5mm jack - tip
3.5mm jack - ring
3.5mm jack - sleeve
H1,5
H1,4
n/a
J30: 2-3
J12: 2-3
J32: 1-2
Left Headphone Output: LHP, Pin #30
Right Headphone Output: RHP, Pin #29
Sleeve connected to Analog Ground
J43
Auxout1
RCA jack (single)
H4,5
None
Auxiliary Output #1:
AUXOUT1, Pin #21
J42
Auxout2
RCA jack (single)
H4,6
None
Auxiliary Output #2:
AUXOUT2, Pin #22
J40
Spkr LineOut
RCA jack - top
RCA jack - bottom
H3,1
H4,7
None
None
Left Speaker line out:
Right Speaker line out:
LSPKOUT, Pin #25
RSPKOUT, Pin #23
J38
Speaker Out
3.5mm jack - tip
3.5mm jack - sleeve
H4,7
H3,1
None
None
Mono-speaker right:
Mono-speaker left:
RSPKOUT, Pin #23
LSPKOUT, Pin #25
Jack
Name
J39
Line Out
J45
Headphone
Connector
Function and
Signal Name / Device Pin Number
on WAU8822
LHP: Pin #30
RHP, Pin #29
Default factory configuration highlighted in color
Table 4: ANALOG OUTPUTS
Figure 26: ANALOG OUTPUTS
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February 22, 2013
8.3.1. Analog Output Options for WAU8822
Several functional feature options are available related to the analog outputs.
Jumper and
Label on
Motherboard
J34
HP-DETECT
J32
HP_DC-AC
Jumper Selection
Installing this jumper on the motherboard connects the LLIN/GPIO2 pin of the WAU8822 to a pullup resistor tied
to VDDB, and shorted to a lower voltage by the headphone jack in the state when nothing is inserted in the
headphone jack.
Care should be taken to remove J34 if the headset detection function is not needed or being evaluated. This
otherwise creates a large DC offset for the LLIN signal, and may give the appearance the LLIN input is
malfunctioning.
"AC" default position, connecting pins 1-2. Headphone is tied to analog ground and should be AC coupled (J33
and J35 not-installed on motherboard).
J33
HP-DC
J35
HP-DC
"DC" position, connecting pins 2-3. Headphone is tied to AUXOUT2 which should be configured as a virtual
ground, and in which case the headphone may be DC coupled.
Installing J33 causes the left headphone connector output to be DC coupled to the LHP headphone output of the
WAU8822.
Installing J35 causes the left headphone connector output to be DC coupled to the LHP headphone output of the
WAU8822.
H5 (header)
AUX1
This is intended as the two-pin connection for an external ear speaker load, such as a telephony 150-ohm
receiver transducer. This is not a jumper option location and no jumper should ever be installed at this location.
J30
LINE-HP
J31
LINE-HP
Position 1-2 Left Line_Out select and Position 2-3 selects Left HP-_Out (Left headphone out)
Position 1-2 Right Line_Out select and Position 2-3 selects Right HP+_Out (Right headphone out)
Default factory configuration highlighted in color
Table 5: ANALOG OUTPUT OPTIONS
Figure 27: ANALOG OUTPUT OPTIONS
WAU8822/NAU8822-EVB Manual Version 1.1
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February 22, 2013
8.3.1.1.
Headphone Detect
The WAU8822 can detect the presence of a headphone by sensing a logic level DC voltage
change at its GPIO pins. On the motherboard, an option exists to connect the GPIO function of
the Left Line input (LLIN/GPIO2) to a 33k-ohm pullup resistor to VDDB. This connection is made
by inserting J34 onto the motherboard.
IMPORTANT: If jumper J34 is left inadvertently on the motherboard, the LLIN input will have a
large DC offset voltage when no headphone is inserted into the headphone jack. This will cause
this input to have a very limited voltage range and unexpected clipping owing to the large DC
offset voltage. If it is desired to use the LLIN input as a signal input, J34 should be removed from
the motherboard. Other GPIO pins can be selected for headphone jack detection in the same
way by setting up the appropriate software configuration.
8.3.1.2.
Headphone Virtual Ground
The headphone is normally connected to analog ground in the default configuration. An
alternative configuration is to use Auxout2 as a "virtual ground" for the headphone. This is done
by moving jumper J32 to short the pin 2-3 position. In this mode of operation, the Auxout2 output
is normally set to Mute, but enabled to output the same DC voltage output as the headphone
output pins. When this is done, AC coupling of the headphone output drivers is not necessary.
IMPORTANT: If jumper J32 is left inadvertently in the pin 2-3 position, unexpected results will
happen depending on how Auxout2 is being used. The most common unexpected result is for
Auxout2 to be in the high impedance state (not powered). In this case, the headphones will have
no ground. Stereo signals will partially cancel, and an unusual mix in the headphones will result.
8.3.1.3.
DC Coupled Headphone Outputs
The headphone outputs may optionally be DC coupled by inserting a jumper on the motherboard.
Inserting J33 will cause the left headphone output to be DC coupled, and inserting J35 will cause
the right headphone output to be DC coupled.
8.3.1.4.
Ear Speaker Mode
This mode is typically used in telephony applications when the ear speaker transducer (such as a
standard 150-ohm impedance receiver transducer) is driven as a floating monaural load. For this
application, the ear speaker transducer would be placed across the two pins of the H5 two-pin
header on the motherboard.
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February 22, 2013
8.4. Digital Audio Using the WAU8822
The WAU8822 supports digital audio input and output using I2S or PCM (DSP Mode) serial data
communications. These various paths may be used directly, or as a convenience, the
motherboard provides resources to convert these formats into commonly used external formats
such as S/PDIF and USB audio. The connectors supporting these digital audio options are listed
and discussed in this section.
8.4.1. WAU8822 Master Clock Requirement
The WAU8822 requires a high frequency master clock supplied via its MCLK pin to operate either
the ADC or DAC blocks inside the WAU8822. For the best audio quality, the master clock should
be phase locked in an integer ratio relationship with the sample clock (FS signal) of the external
source. Further, the internal IMCLK signal clock rate to the ADC and DAC should be exactly 256
times the FS sample rate. This is explained in the Design Guide for the WAU8822.
8.4.2. Master Clock Selection
Many options are available for supplying a suitable MCLK under control of the W681308
microcontroller and using the extensive MCLK management resources provided by the
WAU8822. The WAU8822 also includes a fractional-N PLL (phase locked loop) that can create a
suitable internal MCLK signal using a wide range of available signals on its MCLK pin.
When using S/PDIF as an audio source, the S/PDIF transceiver provides a suitable MCLK.
When using USB, the W681308 provides the 12.000MHz USB clock as the MCLK signal.
An external MCLK clock may be supplied directly to the device on the daughter card via TP33.
To select this option, the J47 jumper selector must be moved from the default Pin 2-3 position to
the Pin 1-2 position. MCLK may also be supplied to J8, however, this SMB style connector is not
populated on the motherboard.
8.4.3. Frame Sync (Sample Rate Clock)
The FS signal is synonymous with the sample rate of the digital audio data bus. This signal does
NOT in any way determine the ADC and DAC sample rate. For best audio quality, the master
clock inside the WAU8822 should be set up so that the ADC and DAC are running phase locked
at exactly the same sample rate as the FS signal. The FS signal is provided by the audio bus
master. The W681308 microcontroller determines which device is the bus master and sets up
the WAU8822 clock subsystem accordingly.
8.4.4. Bit Clock (BLCK)
The bit clock is a medium speed clock that initiates transfer of each audio bit in the I2S or PCM
audio data stream. This clock is synchronous with the Frame Sync and provided by the same
bus master that supplies the Frame Sync signal. The only requirement for the bit clock is to have
a sufficient number of clock-edge transitions to transfer all of the audio data bits in the audio
sample before the next Frame Sync transition occurs.
8.5. Digital Audio Input
There are three methods to stream digital audio from the motherboard or external devices into the
WAU8822 audio data interface. These paths are set up using the appropriate connectors, and
also, using the W681308 microcontroller managed by the GUI Application software to set up the
paths accordingly.
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February 22, 2013
8.5.1. Formatted Digital Audio
A serial audio transceiver that supports AES/EBU, UEC958, S/PDIF, EIAJ CP340/1201 serial
digital audio formats is on the motherboard. Audio to the transceiver may be connected via either
the S/PDIF optical coupler, S/PDIF RCA jack, or connected directly through the J7 header.
The transceiver and serial audio paths between the transceiver and the device on the daughter
card are managed by the W681308 microcontroller. Level shifters are included on the
motherboard to adjust signal levels appropriately for the voltages selected for the device on the
daughter card.
8.5.2. USB Audio
Audio in mono format can be streamed from an external USB host through the W681308
microcontroller and output in I2S format to the device on the daughter card. USB audio is in a
standard USB isochronous stream format. Level shifters are included on the motherboard to
adjust signal levels appropriately for the voltages selected for the device on the daughter card.
8.5.3. Unformatted Audio
Bi-directional serial audio may be connected directly to a device on the daughter card via the J15
serial audio connector. Although J15 is labeled on the motherboard as an I2S port, this port may
be used for either I2S or PCM (DSP mode) audio data modes as determined by the external
device connected to the J15 header. The path to use the J15 header is managed by the
W681308 microcontroller. Level shifters are included on the motherboard to adjust signal levels
appropriately for the voltages selected for the device on the daughter card.
Figure 28: DIGITAL AUDIO INPUTS/OUTPUTS
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February 22, 2013
8.6. Digital Audio Output
There are three methods to stream digital audio from the WAU8822 audio data interface to the
motherboard or external devices. These paths are set up using the appropriate connectors, and
also, using the W681308 microcontroller managed by the GUI Application software to set up the
paths accordingly.
8.6.1. Formatted Digital Audio
A serial audio transceiver that supports AES/EBU, UEC958, S/PDIF, EIAJ CP340/1201 serial
digital audio formats is included on the motherboard. Audio data from the WAU8822, and clock
information to or from the WAU8822 may be routed to the transceiver under control of the
W681308. The audio data from the WAU8822 ADC will then be available on the S/PDIF serial
output from RCA jack, J9.
When the W681308 has configured the motherboard to use the S/PDIF transceiver, the I2S audio
and clock signals to/from the WAU8822 are available on header J7.
8.6.2. USB Audio
Audio data in mono format can be streamed from the WAU8822 ADC to the USB host through
the W681308 microcontroller. USB audio is in a standard USB isochronous stream format.
8.6.3. Unformatted Audio
Bi-directional serial audio may be connected directly to a device on the daughter card via the J15
serial audio connector. Although J15 is labeled on the motherboard as an I2S port, this port may
be used for either I2S or PCM (DSP mode) audio data modes as determined by the external
device connected to the J15 header. The path to use the J15 header is managed by the
W681308 microcontroller. Level shifters are included on the motherboard to adjust signal levels
appropriately for the voltages selected for the device on the daughter card.
WAU8822/NAU8822-EVB Manual Version 1.1
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February 22, 2013
8.7. Digital Audio Related Connector Options
Digital
Audio
Connector
Connector
Type
J5
RCA Jack
(single)
SPDIF_IN digital audio from an external audio device
J9
RCA Jack
(single)
SPDIF_OUT digital audio to an external audio device
TP33
Test Point
MCLK_IN external source for master clock
J8
SMB Connector
J7 pin1
Header
SPDIF_MCLK_OUT high speed clock generated by S/PDIF transceiver
Passed to MCLK pin on daughter card if S/PDIF is set to be bus Master
J7 pin2
Header
SPDIF_ADCDAT_IN audio data from daughter card into S/PDIF transceiver
This path is level shifted, but always enabled.
J7 pin3
Header
SPDIF_FRAME_IN frame sync from daughter card if provided by device on card
J7 pin4
Header
SPDIF_BCLK_IN bit clock from daughter card if provided by device on card
J7 pin5
Header
SPDIF_DACDAT_OUT serial audio data to daughter card
J7 pin6
Header
SPDIF_FRAME_OUT frame sync signal provided by S/PDIF transceiver
J7 pin7
Header
SPDIF_BLCK_OUT bit clock signal provided by the S/PDIF transceiver
J15 pin 1
Header
ADCOUT_AP audio data from daughter card if provided by device on card
J15 pin 3
Header
BCLK_AP bit clock to or from external device connected to J15
J15 pin 5
Header
FS_AP frame sync to or from external device connected to J15
J15 pin 7
Header
DACIN_AP audio data from external device
J15 pin 9
Header
MCLK_AP high speed MCLK signal to or from external device connected to J15
J47
Jumper
Pin 1-2 shorted to select external MCLK
Pin 2-3 shorted to select internal MCLK on motherboard
Signal Name and Description
MCLK_IN external source for master clock
(note: SMB connector not populated on PCB)
Default factory configuration highlighted in color
Table 6: DIGITAL AUDIO CONNECTOR OPTIONS
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February 22, 2013
8.8. USB and External Control CONNECTIONS
The motherboard is connected to the USB host using a standard mini-USB type connector. USB
V1.1 is supported, and in most cases, all power for the EVB is supplied via the USB cable.
Reference
Designator
Connector
Style
Pin Number
Signal Name
1
VCC
2
USBD-
3
USBD+
4
NC
5
GND
6
SHIELD
7
SHIELD
8
SHIELD
9
SHIELD
miniUSB
Type B
CON1
Table 7: USB CONNECTOR
8.8.1. Special Connectors
The motherboard is connected to the USB host using a standard mini-USB type connector. USB
V1.1 is supported, and in most cases, all power for the EVB is supplied via the USB cable.
Connector
Name
J15
JTAG_ICE
J29, J37, J41
J29
Description
JTAG ICE connector
For Nuvoton use to program the W681308 USB controller
Table 8: SPECIAL CONNECTORS
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February 22, 2013
8.9. Jumpers
All images of the motherboard show the jumpers in the standard configuration. This image may
be used for reference to restore jumpers to the original factory-new positions.
Figure 29: JUMPERS IN STANDARD CONFIGURATION
WAU8822/NAU8822-EVB Manual Version 1.1
Page 50 of 64
February 22, 2013
8.10.
Table of Jumper Options
Jumpers
Default Position
Description
J10
1-2 (short)
Position 1-2 selects Right MIC and Position 2-3 selects Right Phono
J11
1-2 (short)
Position 1-2 selects Left MIC and Position 2-3 selects Left Phono
J13
1-2 (short)
Position 1-2 selects Right MIC and Position 2-3 selects Right Phono
J14
1-2 (short)
Position 1-2 selects Left MIC and Position 2-3 selects Left Phono
J17
3-4(short)
The 3 position jumper selects the VDDC source. Position 1-2 Selects External VDD via
J18, 3-4 Selects VDDB, and position 5-6 sects 1.8VDC
J20
2-3(short)
J20 Selects the VDDB source, position 1-2 selects external source via J22 position 2-3
selects 3.3VDC
J21
2-3(short)
J21 Selects the VDDA source, position 1-2 selects external source via J19 position 2-3
selects 3.3VDC
J23
2-3(short)
Install for external I2C at VDDB or I2C at 3.3V operation
J25
3-4 (short)
Speaker VDD selection jumper. Position 1-2 selects external source via (J36), position 34 selects 5VDc and position 5-6 selects analog power (VDDA)
J28
Not on PCB
J30
2-3(short)
Position 1-2 Left Line_Out select and Position 2-3 selects Left HP-_Out (Left headphone
out)
J31
2-3(short)
Position 1-2 Right Line_Out select and Position 2-3 selects right HP+_Out (Right
headphone out)
J32
1-2 (short)
Position 1-2 selects Headphone cap-less mode and
Position 2-3 selects AC coupled headphone output
J33
Open
Open position selects Headphone cap-less mode and Closed Position selects DC
coupled headphone output (HP-) (Output for WAU8812, and WAU8814)
J34
Open
Headphone detect
J35
Open
Open position selects Headphone cap-less mode and
Closed Position selects DC coupled headphone output (HP+)
J41
Not on PCB
J47
2-3(short)
AUX1
Open
Link1
Closed
Set up 3.5mm stereo microphone for stereo operation.
Link2
Closed
Connects VDDC pin H2-5, on daughter card to VDDC supply voltage
Link3
Closed
Connects VDDA pin H3-7, on daughter card to VDDA supply voltage
Link4
Closed
Connects VDDB pin H2-6, on daughter card to VDDB supply voltage
Link5
Closed
Connects VDDSPK pin H3-2, on daughter card to VDDSPK supply voltage
JTAG.connector for factory use with the W681308 USB controller
Connector for JTAG ICE
Install this jumper for external MCLK Position 1-2 enables external MCLK and poison 2-3
disables the external MCLK.
H5 header on schematic. This is never a jumper. Two pin header for 150-ohm ear
speaker load.
Table 9: JUMPER OPTIONS
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February 22, 2013
8.11.
Test Points
Figure 30: TEST POINTS
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Page 52 of 64
February 22, 2013
8.12.
Table of Test Points
Reference
Designator
Description
Signal Name
TP1
TP2
TP3
TP4
Digital Ground
Right Line_In
Left Line_In
Right Phono-In positive
DGND
R_LIN
L_LIN
RMIC_IN+
TP5
Right Phono-In Negative
TP6
TP7
Left Phono-In positive
Left Phono-In Negative
RMIC_INLMIC_IN+
TP8
Right Aux_IN
RAUXIN
TP9
TP10
TP11
Left Aux_IN
Right Mic-In Positive
Right MIC-In Negative
LAUXIN
RMIC+
RMIC-
TP12
Left MIC-In positive
LMIC+
TP13
TP14
TP15
Left MIC-In Negative
VDDC Source (J17)
VDDB Source (J23)
LMICJ17-VDD-SRC
J23 I2C
TP16
Analog Voltage test point
TP17
TP18
TP19
Speaker VDD
Digital Ground
Analog Ground
TP20
Analog Ground
TP21
External +5VDC P1
TP22
Internal +5VDC Rail
+5V_IN
TP23
TP24
TP25
LINE OUT
LINE OUT
Headphone
L_OUTL_OUT+
HP-
TP26
Headphone
HP+
TP27
TP28
TP29
Differential Speaker Negative
Speaker Negative
Differential Speaker Positive
TP332
Speaker positive
TP31
TP30
TP33
AUXOU2
AUXOUT1
External clock Input
LMIC_IN-
VDDA
VDDSPK
DGND
AGND
AGND
DC_EXT
DIFFSPKDIFF+
SPK+
AUXOUT1
AUXOU2
MCLK_IN
Table 10: TEST POINTS
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February 22, 2013
DUT_AVDD
DUT_DCVDD
DUT_DBVDD
DUT_SPKVDD
AGND
WAU8822/NAU8822-EVB Manual Version 1.1
Page 54 of 64
H4
H1
C18
4.7UF
AGND
C12
4.7UF
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
C7
4.7UF
+ C1
100UF
DGND
C5
4.7UF
DUT_SDIN
DUT_MODE
DUT_LAUXIN
DUT_RAUXIN
DUT_AUXOUT1
DUT_AUXOUT2
DUT_SPKOUTP
DUT_LMICP
DUT_LMICN
DUT_LLIN_GPIO
DUT_RMICP
DUT_RMICN
DUT_RLIN_GPIO
DUT_FS
DUT_BCLK
DGND
C10
4.7UF
DGND
AGND
AGND
C4
4.7UF
AGND
H3
H2
.1UF
C3
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
TP3
TP2
DGND
.1UF
C6
DUT_HPP
DUT_HPN
DUT_AVDD
DUT_MICBIAS
DUT_SPKOUTN
DUT_SPKVDD
DUT_VREF
DUT_DCVDD
DUT_DBVDD
DUT_CSB_GPIO
DUT_SCLK
.1UF
C9
AGND
DGND
DGND
.1UF
C15
DGND
DUT_ADCOUT
DUT_DACIN
DUT_MCLK
DGND
.1UF
C14
.1UF
C11
DUT_CSB_GPIO
DUT_SCLK
DUT_SDIN
DUT_LAUXIN
DUT_RAUXIN
DUT_LMICP
DUT_LMICN
DUT_LLIN_GPIO
DUT_RMICP
DUT_RMICN
DUT_RLIN_GPIO
DUT_FS
DUT_BCLK
DUT_ADCOUT
DUT_DACIN
DUT_MCLK
0
0
0
0
0
0
0
0
0
100
100
R4
R5
R6
R1
R2
R3
R16
R17
R12
R13
R14
DUT_LMICN
DUT_LMICP
DUT_MICBIAS
22
22
22
100
22
R7
R8
R9
R10
R11
DUT_AVDD
DUT_DCVDD
DUT_DBVDD
DUT_SPKVDD
C16
4.7UF
C17
4.7UF
RHP
LHP
MODE
VSSA
GPAD
VSSSPK
VSSD
VREF
MICBIAS
1
1
J1
J2
2
2
27
32
22
21
23
25
29
30
18
28
33
24
12
AGND
1.2K 1%
R25
R22
R19
R18
R20
R21
DGND
R15
1
2
MICROPHONE
M1
no-pop
R23
DUT_MICBIAS
DUT_AUXOUT2
DUT_AUXOUT1
DUT_SPKOUTP
DUT_SPKOUTN
DUT_HPP
DUT_HPN
DUT_MODE
C2
4.7UF
AGND
C8
4.7UF
0
0
0
0
0
100
AGND
AGND AGND
M+
M-
C13
4.7UF (no-pop)
WAU8822/NAU8822
CSB/GPIO1
SCLK
SDIO
RMICP
RMICN
RLIN/GPIO3 RSPKOUT
LSPKOUT
LMICP
LMICN
LLIN/GPIO2 AUXOUT2
AUXOUT1
LAUXIN
RAUXIN
FS
BCLK
ADCOUT
DACIN
MCLK
VDDA
VDDC
VDDB
VDDSPK
U1
1.2K 1%
R24
15
16
17
19
20
1
2
3
4
5
6
7
8
9
10
11
31
13
14
26
DUT_VREF
TP1
9. WAU8822-EVB Schematics (High Resolution Images)
February 22, 2013
Figure 31: WAU8822 DAUGHTER CARD SCHEMATIC
WAU8822/NAU8822-EVB Manual Version 1.1
Page 55 of 64
February 22, 2013
Figure 32: ANALOG INPUTS SCHEMATIC
J2
AGND
LEFT
PHONO
INPUT
Red
R63
TP4
TP
R65
AGND
1
2
5
J3
2
3
TP6
TP
TP7
TP
0
0
R81
0
CP-3533N-ND
J16
2
3
TP5
TP
AGND
White
LEFT MIC
INPUT
Stereo Mic Select
Red
White
1
2
5
CP-3533N-ND
J12
1
RIGHT MIC
INPUT
RIGHT
PHONO
INPUT
LINK1
R67
R69
0
0
R92
0
AGND
AGND
R64
NoLoad
AGND
February 22, 2013
AGND
R68
NoLoad
R70
NoLoad
2
1UF
C86
220PF
C87
220PF
1UF
(LIN Phono Select)
C101
(MIC Select)
AGND
R91
47K
PG1
PG1
C96
220PF
DUT_LMICN
DUT_RMICN
LIN JUMPER:
1-2 LIN MIC SELECT
2-3 LIN PHONO SELECT
MICN
1
2
3
J11
R80
47K
AGND
(RIN Phono Select)
C99
(MIC Select)
RIN JUMPER:
1-2 RIN MIC SELECT
2-3 RIN PHONO SELECT
MICN
3
1
J10
TP12
TP
C84
220PF
C85
220PF
TP13
TP
TP10
TP
R66
NoLoad
TP11
TP
R85
2
MICP
3
1
J13
C105
220PF
AVDD
R78
1UF
R84
MICP
1
2
3
J14
680
1UF
0
J1
DUT_LMICP
LIP JUMPER:
1-2 LIP MIC SELECT
2-3 LIP PHONO SELECT
PG1
RED
AUXR INPUT
WHITE
AUXL INPUT
RED
R2 INPUT
WHITE
L2 INPUT
R83
J4
AGND
2
3
TP8
TP
R72
R73
R59
TP2
TP
MICBIAS
R60
TP9
TP
AGND
2
3
TP3
TP
Note: If RAvdd is
populated Rmbias
must not be
loaded
(LIP Phono Select)
C102
RIP JUMPER:
1-2 RIP MIC SELECT
2-3 RIP PHONO SELECT
PG1
(MIC Select)
DUT_RMICP
C12
NoLoad
(RIP Phono Select)
C100
(MIC Select)
680
C93
+
4.7UF
AGND
NoLoad
1
Analog Inputs:
1
Page 56 of 64
1
WAU8822/NAU8822-EVB Manual Version 1.1
0
0
0
0
R71
NoLoad
R74
NoLoad
R61
NoLoad
R62
NoLoad
PG1
C88
220PF
C90
C91
C81
C82
C89
220PF
C80
220PF
C83
220PF
1UF
1UF
1UF
1UF
DUT_RAUXIN
DUT_LAUXIN
PG1
PG1
DUT_RLIN_GPIO PG1,4,5
DUT_LLIN_GPIO PG1,3
Figure 33: ANALOG OUTPUTS SCHEMATIC
PG1
DUT_HPP
HPP JUMPER:
1-2 Line_OUT
2-3 HP_OUT
PG1 DUT_HPN
HPN JUMPER:
1-2 Line_OUT
2-3 HP_OUT
C130 10UF
C131 10UF
R114
J35
100UF
H5
R116
R121
C133
220PF
C132
220PF
TP23
TP
R111
10K
R118
10K
AGND
100
AGND
100
100UF
NoLoad
NoLoad
R110
4.7K
R115
R109
4.7K
C65
C64
C62
+
+
Ear Speaker Connection
ROUT1
1
2
3
J31
LOUT1
3
2
1
J30
+
+
100
AGND
AGND
C134
220PF
AGND
C141
220PF
TP24
TP
2
3
J39
100
1
C63
+
+
AGND
PG1 DUT_AUXOUT1
TP26
TP
TP25
TP
J34
5
1
2
3
SJ-3504
J45
C135
1UF
PG1 DUT_AUXOUT2
SPKN
J32
R117
33K
DBVDD
1
2
3
J33
R119
4.7K
R122
100
2
3
4
1UF
C142
220PF
TP30
TP
C136
DUT_LLIN_GPIO PG1,2
PG1 DUT_SPKOUTP
PG1 DUT_SPKOUTN
AGND
OUT4
J42
R120
4.7K
R123
C140
C138
TP32
TP
TP28
TP
1
Page 57 of 64
100
1UF
1UF
2
3
4
C143
220PF
TP31
TP
C139
220PF
C137
220PF
AGND
OUT3
J43
AGND
R113
47K
AGND
R112
47K
1
2
3
J40
AGND
TP20
TP
AGND
TP19
TP
TP29
TP
TP27
TP
1
2
3
MJ-3536
J38
AGND
8 Ohm Speaker
1
WAU8822/NAU8822-EVB Manual Version 1.1
February 22, 2013
Figure 34: SPDIF INTERFACE SCHEMATIC
Yellow
1
TORX177
DGND
3
U1
DGND
J5
SPDIF_IN
2
3
4
C1
0.1UF
L2
47uH
+5V_IN
75
R58
C79
1
0.1UF
R5 47K
R13 47K
R17 47K
12
13
14
6
23
27
4
5
1
21
28
DGND
10K
R14 24
V33USB VA+
CS8427
COPY
APMS
ORIG
RXP
RXN
H/S
ILRCK
ISCLK
SDIN
VA+
VL+
VL2+
U2
OSCLK
OLRCK
SDOUT
RMCK
AGND
DGND
DGND
L1
9
8
19
26
25
3
20
15
11
16
17
18
10
7
22
2
VA+
February 22, 2013
DGND
DGND
DGND
R3
47K
R2 47K
R1 47K
C4
0.1UF
C3
0.1UF
R4
1.2K
V33USB
C5
4.7UF
DGND
C2
.0047UF
3.3uH
C7
0.1UF
+5V_IN
RST
FILT
AUDIO/V
TXP
TXN
EMPH/U
PRO/C
TCBL
RERR
Note: CS8427 is setup for I2S data format
0.01UF
C6
PG4 SPDIF_FRAME_IN
PG4 SPDIF_BCLK_IN
PG4,5 SPDIF_ADCDAT_IN
SPDIF Interface:
Interface
2
4
5
6
Page 58 of 64
620
0.1UF
R19
NoLoad
SPDIF_RESB PG5
C10
R16
DGND
NoLoad
L3
R15
NoLoad
SPDIF_BCLK_OUT PG4
SPDIF_FRAME_OUT PG4
SPDIF_DACDAT_OUT PG4
SPDIF_MCLK_OUT PG4
1
2
3
4
5
6
7
8
5 2
3
4
R18
SC982-04
4
1
T1
SPDIF_MCLK_OUT
SPDIF_ADCDAT_IN
SPDIF_FRAME_IN
SPDIF_BCLK_IN
SPDIF_DACDAT_OUT
SPDIF_FRAME_OUT
SPDIF_BCLK_OUT
DGND
TP1
GND
0
Black
SPDIF_OUT
J9
CON7
J7
1
WAU8822/NAU8822-EVB Manual Version 1.1
Figure 35: USB CONTROLLER SCHEMATIC
1
DGND
February 22, 2013
V33USB
DGND
2
3
+5V_IN
DS1818
1
R56
2K
DGND
1
2
RESETB
V33USB
TDI
CON2
J44
1
DGND
47K
1
2
3
4
5
EXT_CONT
C125
22PF
Y1
R47
TMS
XTO
XTI
USB_MODE
TCK
2N7002
Q9
270
VCC
USBDUSBD+
NC
GND
SHELL
SHELL
SHELL
SHELL
1
3
5
7
9
DGND
C74
51PF
R51
R53
DGND
DGND
C78
22PF
DGND
C76
51PF
R55
0
XTO
XTI
0.1UF
TMS
USB_MODE
TCK
DM
DP
C68
1M
DGND
0.01UF
C71
V33USB
2
4
6
8
10
R108
NOPOP
CON10A
J24
DGND
NOPOP
C122
R106
NOPOP
DGND
NOPOP
C121
R105
NOPOP
1
2
3
4
5
6
7
8
9
10
11
12
DBVDD
NOPOP
C118
R103
NOPOP
R100
2K
J29
CON10
1
2
3
CON3
J23
DGND
NOPOP
C116
+5V_IN
0.1UF
DGND
NOPOP
C117
R101
NOPOP
DGND
USB_SCLK
USB_CSB
USB_MOSI
RESETB
VREF1
VREF2
MCP
MCO
MCGND
GND31
SPP
EARP
VDD28
EARN
SPN
GND25
36
35
34
33
32
31
30
29
28
27
26
25
8
7
6
5
8
7
6
5
8
7
6
5
DGND
GND
VREF1
SCL1
SDA1
EN
VREF2
SCL2
SDA2
GND
VREF1
SCL1
SDA1
GND
VREF1
SCL1
SDA1
PCA9306_VSSOP
EN
VREF2
SCL2
SDA2
PCA9306_VSSOP
U25
DGND
1
2
3
4
1
2
3
4
1
2
3
4
47K
R40
C111
DUT_MODE
DUT_CSB_GPIO
DUT_SCLK
DUT_SDIN
DGND
0.1UF
DBVDD
XTO
SDI
SCK
WS
SDO
DGND
1
3
5
7
9
330
CON10A
J41
2
4
6
8
10
47K
CON12
J37
AP_SLV_EN
AP_MASB
PG4
2N7002
Q6
C34
0.1UF
DGND
USB_MOSI
USB_SCLK
I2C_MODE
DGND
USB_CSB
DGND
+5V_IN
R29
2K
8
7
6
5
PCA9306_VSSOP
EN
VREF2
SCL2
SDA2
U24
GND
VREF1
SCL1
SDA1
PCA9306_VSSOP
EN
VREF2
SCL2
SDA2
U22
C56
0.1UF
8
7
6
5
GND
VREF1
SCL1
SDA1
USB_I2S_EN
2N7002
Q5
+5V_IN
V33USB
SPI_MODE_EN
R31
2K
USB_I2SB
47K
47K
R95
47K
+5V_IN
AP_MAS_EN
2N7002
Q1
47K
R9
R25
V33USB
47K
DGND
+5V_IN
R10
V33USB
R27
SPDIF_MAS_EN PG4
2N7002
Q2
47K
R8
DGND
+5V_IN
R98
V33USB
47K
DGND
+5V_IN
R11
V33USB
USB_MCLK
PG4
USB_ADCDAT_IN PG4,6
USB_BCLK
PG4
USB_FRAME PG4
USB_DACDAT PG4
DUT_RLIN_GPIO PG1,2,4
R49
TDI
TCK
TDO
TMS
DGND
SPDIF_MASB
AP_SLVB
JTAG ICE Connector
0.1UF
2N7002
Q8
SPI_MODE_EN
47K
R38
DGND
+5V_IN
C147
C146 0.1UF
PG4
DGND
VREF1
VREF2
USB_MISO
PCA9306_VSSOP
U23
EN
VREF2
SCL2
SDA2
U20
0.1UF
C145
C144
0.01UF
SPI_MODEB
V33USB
Install for external I2C@DBVDD
or I2C@3.3V operation.
EXT_CONT
R102
C55
2K
C75
27PF
DM
DP
DGND
DGND
JTAG
TX_TRST
RX_TMS
GND3
XTOUT
XTIN
VDDL
VDD7
DN
DP
GND10
GPIO3_LED
GPIO0_TCK
U27
DGND
V33USB
W681308
1
2
3
DGND
V33USB
C77
27PF
22
22
DGND
VDDL
CON3
J28
47K
R12
V33USB
If the external signal interface VCC
is greater than DBVDD, external
PU resistors are required. External
VCC can range from DBVDD to
5VDC (w/ the PU's).
PG1
R57
1.2K
1
2
3
4
5
6
7
8
9
0.1UF
C69
PG6 SPDIF_RESB
USB_5V
DGND
R48
DGND
C124
22PF
12MHz
DUT_MODE
2N 7002
Q7
47K
DGND
DGND
DBVDD
R34
CON1
UX60A-MB-5ST
DGND
Q12
2N7002
1K
R52
CON5
J27
47K
47K
R42
DGND
+5V_IN
R43
+5V_IN
D19
GRN_LED
R35
Q10
2N7002
1K
R45
DGND
USB_MODE
1
D15
RED_LED
VCC RST
GND
U28
Reset _Button
S1
DGND
4 3
2 1
TDO
Q11
2N7002
1K
R46
THE_BUTTON
V33USB
R124
10K
TCK
3 1
2
D16
Y EL_LED
2
+5V_IN
2
3 1
2
EXT_CONTROL
2
3 1
2
1
2
1
2
V33USB
1
2
1
2
1
2
3
4
5
6
7
8
9
10
SPDIF_RESB
EXT_CONTROL
I2C_MODE
SPI_MODEB
AP_SLVB
AP_MASB
SPDIF_MASB
USB_I2SB
SPDIF_SLVB
DIRECT_DUTB
48
47
46
45
44
43
42
41
40
39
38
37
JTAG
KX0
KX1
KX2
KX3
KX4
KY0
KY1
KY2
KY3
KY4
REGL
CSB
SCLK
SDI
SDO
CSLB
FS
BCLK
PCMR
PCMT
GPIO1_TDI
GPIO2_TDO
VPP
13
14
15
16
17
18
19
20
21
22
23
24
THE_BUTTON
WS
SCK
SDI
SDO
TDI
TDO
1
2
V33USB
R30
2K
DGND
1
2
3
4
DGND
DBVDD
DGND
1
2
3
4
C48
0.1UF
DBVDD
DUT_CSB_GPIO PG1,4
47K
R99
DUT_SDIN
DUT_SCLK
DUT_SDIN
DUT_SCLK
0.1UF
DGND
PG1
PG1
DIRECT_DUT_EN PG4
2N7002
Q3
47K
R26
C38
SPDIF_SLV_EN PG4
2N7002
Q4
47K
R23
DGND
R32
2K
47K
R21
+5V_IN
47K
DGND
+5V_IN
R24
V33USB
DIRECT_DUTB
PG4
SPDIF_SLVB
PG4
V33USB
1
W681308 USB Controller:
1
2
1
2
3
4
5
6
7
8
9
10
11
12
USB_CSB
USB_SCLK
USB_MISO
USB_MOSI
THE_BUTTON
WS
SCK
SDI
SDO
TDI
TDO
1
2
Page 59 of 64
2
WAU8822/NAU8822-EVB Manual Version 1.1
WAU8822/NAU8822-EVB Manual Version 1.1
Page 60 of 64
February 22, 2013
Figure 36: LEVEL TRANSLATORS SCHEMATIC
WAU8822/NAU8822-EVB Manual Version 1.1
Page 61 of 64
February 22, 2013
PG6 SPDIF_BCLK_IN
PG6 SPDIF_FRAME_IN
PG5 SPDIF_SLV_EN
DGND
C27
0.1UF
PG6 SPDIF_BCLK_OUT
PG6 SPDIF_FRAME_OUT
From
SPDIF
PG6 SPDIF_MCLK_OUT
PG6 SPDIF_DACDAT_OUT
PG5 SPDIF_MAS_EN
PG5 USB_BCLK
PG5 USB_FRAME
From
USB
PG5 USB_MCLK
PG5 USB_DACDAT
R7
330
SPDIF_MAS_EN
DGND
C11
0.1UF
8
7
6
5
8
7
6
5
8
7
6
5
PCA9306_VSSOP
EN
GND
VREF2 VREF1
SCL2
SCL1
SDA2
SDA1
PCA9306_VSSOP
U6
EN
GND
VREF2 VREF1
SCL2
SCL1
SDA2
SDA1
U3
PCA9306_VSSOP
EN
GND
VREF2 VREF1
SCL2
SCL1
SDA2
SDA1
PCA9306_VSSOP
U15
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
DGND
C19
0.1UF
R93
R96
R88
R87
C29
0.1UF
DGND
47K
47K
DUT_BCLK_IN
DUT_FRAME_IN
C108
0.1UF
47K
47K
DUT_BCLK
DUT_FS
C14
0.1UF
DBVDD
DGND
DBVDD
DGND
PCA9306_VSSOP
1
2
3
4
V33USB
24
23
22
21
20
19
18
17
16
15
14
13
DGND
74LVC8T245
VCCA VCCB
DIR
VCCB
A1
OE
A2
B1
A3
B2
A4
B3
A5 A<-B B4
A6
B5
A7
B6
A8
B7
GND
B8
GND
GND
U9
EN
GND
VREF2 VREF1
SCL2
SCL1
SDA2
SDA1
U14
C23
0.1UF
8
7
6
5
1
2
3
4
5
6
7
8
9
10
11
12
U13
DGND
8
GND
7 EN
6 VREF2 VREF1
SCL1
5 SCL2
SDA2
SDA1
+5V_IN
C13
0.1UF
+5V_IN
DGND
ADCDAT_3V
DUT_BCLK_IN
DUT_FRAME_IN
DUT_CSB_IN
On-board Digital Audio
To
SPDIF
PG5 USB_I2S_EN
To USB
To SPDIF
PG5 USB_MISO
PG5,6 USB_ADCDAT_IN
PG5,6 SPDIF_ADCDAT_IN
V33USB
DUT_BCLK
DUT_FS
DUT_MCLK
DUT_DACIN
PG1
PG1
PG1
PG1
DUT_CSB_GPIO PG1,5
DUT_RLIN_GPIO PG1,2,5
DUT_ADCOUT PG1
AP_MAS_EN
AP_SLV_EN
D3
D2
MCLK_AP_OUT
BCLK_AP
FS_AP
BCLK_AP
FS_AP
ADCOUT_AP
DACIN_AP
MCLK_AP
FS_AP
DACIN_AP
ADCOUT_AP
BCLK_AP
DGND
C33
0.1UF
DBVDD
MCLK_AP R75
PG5 DIRECT_DUT_EN
DGND
SMB
J8
PCA9306_VSSOP
EN
GND
VREF2 VREF1
SCL2
SCL1
SDA2
SDA1
U4
PCA9306_VSSOP
EN
GND
VREF2 VREF1
SCL2
SCL1
SDA2
SDA1
U11
PCA9306_VSSOP
EN
GND
VREF2 VREF1
SCL2
SCL1
SDA2
SDA1
U7
8
7
6
5
+5V_IN
DGND
8
7
6
5
8
7
6
5
PCA9306_VSSOP
EN
GND
VREF2 VREF1
SCL2
SCL1
SDA2
SDA1
PCA9306_VSSOP
U12
EN
GND
VREF2 VREF1
SCL2
SCL1
SDA2
SDA1
PCA9306_VSSOP
U16
DGND
U18
8
GND
7 EN
6 VREF2 VREF1
SCL1
5 SCL2
SDA2
SDA1
C35
0.1UF
R76
NOPOP
DGND
1
2
3
4
1
2
3
4
DBVDD
DGND
NOPOP
C95
R82
NOPOP
DUT_MCLK
DUT_FS
DUT_DACIN
DUT_ADCOUT
DUT_BCLK
C28
0.1UF
DGND
NOPOP
C94
R79
NOPOP
DUT_MCLK
DGND
DGND
1
2
3
4
1
2
3
4
1
2
3
4
C21
0.1UF
DGND
DUT_BCLK_IN
DUT_FRAME_IN
ADCDAT_3V
DUT_DACIN
DUT_CSB_IN
C20
0.1UF
DGND
DUT_BCLK
DUT_FS
DBVDD
DGND
1
2
3
4
1
2
3
4
1
2
3
4
DBVDD
NOPOP
C92
R77
NOPOP
PCA9306_VSSOP
EN
GND
VREF2 VREF1
SCL2
SCL1
SDA2
SDA1
U8
PCA9306_VSSOP
DGND
U5
8
GND
7 EN
6 VREF2 VREF1
SCL1
5 SCL2
SDA2
SDA1
C16
0.1UF
8
7
6
5
8
7
6
5
8
7
6
5
DGND
C15
0.1UF
ADCOUT_AP
BCLK_AP
FS_AP
DACIN_AP
MCLK_AP
330
+5V_IN
MCLK_AP_OUT
Master CLK Input
PG5 AP_MAS_EN
BAV16W
BAV16W
To AP for AP
Slave mode.
PG5 AP_SLV_EN
+5V_IN
DGND
DGND
NOPOP
C98
1
3
5
7
9
I2S Port
J15
2
4
6
8
10
Direct Header Bypass
note: May require
external pull-up to
external VDD.
NOPOP
C97
R86
NOPOP
Digital Audio
Interface
3.3VDC Digital Audio Interface.
DGND
Codec Power:
EXT_AVDD
+5V_IN
TP17
+5V_IN
VOUT
VOUT
2
4
AVDD
ADJ
+ C57
10UF
VIN
C119
0.33UF
+ C41
10UF
SPX1117
R28
1.2K
C114
C115
.1UF
4.7UF
C112
0.1UF
+5V_IN
+ C50
10UF
1
Analog
Pow er
C47
1UF
AGND
TP22
+5V_IN
1
2
3
U21
3
AVDD
J21
TP16
3.3VA
D7
RED
AGND
R37
1K
DGND
D8
GREEN
AGND
R33
R36
TBD
TBD
DUT_AVDD
+5V_IN
PG7
AGND
AGND
+ C26
10UF
AVDD +5V_IN
EXT_DBVDD
DGND
TP15
3.3VD
DBV
VOUT
VOUT
1
3
5
2
4
6
C60
R41
1.2K
SPKVDD
DBVDD
C45
+
SPKVDD
DBVDD
1
2
3
2
4
ADJ
VIN
EXT_SPKVDD
J25
J20
U17
3
DGND
AGND
R39
1.2K
C43
C53
C54
.1UF
4.7UF
1
10UF
R94
R97
TBD
TBD
C109
1UF
AGND
D9
RED
0.1UF
SPX1117
.1UF
DUT_DBVDD
PG7
D11
YELLOW
DBVDD
Pow er
DGND
DGND
Speaker
Power
DBVDD
DGND
+5V_IN
J17
DCV
1
3
5
U10
3
C8
0.33UF
2
4
VOUT
VOUT
2
4
6
R22
1.2K
DCVDD
C22
+
10UF
C103
1UF
R90
R89
J6
TP18
GND
TBD
TBD
BANANA
4.7UF
D1
Y ELLOW
DCVDD
Pow er
DUT_DCVDD
DGND
PG7
DGND
DGND
MOUNTING
MOUNTING
MOUNTING
MOUNTING
MOUNTING
MOUNTING
EXT_5V
DC_EXT
DC_EXT
1
3
DC_VIN
BAT60J
2
D17
BAT60J
2
C126
C72 +
C128
1
C51 100UF
C129
R50
C73
0.01UF
1.2K
0.1UF
+5V_IN
100UF
0.1UF
2
0.01UF
D14
V33USB
C70
+
VIN
VOUT
VOUT
R104
TBD
C61
+
C123
0.1UF
SPX1117
10UF
10UF
R107
TBD
C120
1UF
+5V_IN
ON
1
FB1
MT4
MT6
MT3
MT1
MT5
MT2
2
4
2
0.1UF
HOLE
HOLE
HOLE
HOLE
HOLE
HOLE
U26
3
1
C127
D18
1
FB2
5VDC
INPUT
BAT60J
2
1
TP21
P1
2.5MM DC JACK
1
D10
ADJ
USB_5V
DGND
+
DGND
2
C18
.1UF
0.1UF
DGND
DGND
C17
C104
SPX1117
1
+ C9
10UF
VIN
ADJ
DGND
DCVDD
AGND
EXT_DCVDD
TP14
1.8VC
R54
0
R20
0
R6
0
R44
0
DGND
J22
J26
J18
J36
J19
BANANA
BANANA
BANANA
BANANA
BANANA
PTC1
0.35A
EXT_5V
PTC5
0.35A
EXT_DCVDD
PTC2
0.35A
EXT_SPKVDD
C42
0.1UF
D13
1SMB5920B
6.2V
10UF
C58
0.1UF
C59
+
D4
10UF
4.7V
C25
+
D12
1SMB5920B
6.2V
10UF
C66
0.1UF
C67
+
D5
10UF
4.7V
1SMB5917B
DGND
DGND
C31
0.1UF
DGND
AGND
AGND
Figure 37: POWER SCHEMATIC
WAU8822/NAU8822-EVB Manual Version 1.1
Page 62 of 64
February 22, 2013
C32
+
10UF
2
2
2
2
4.7V
C24
0.1UF
1SMB5917B
1
C37
+
EXT_AVDD
2
1SMB5917B
1
1
D6
AGND
1
PTC4
0.35A
EXT_DBVDD
1
PTC3
0.35A
DGND
10. LIST OF FIGURES
Figure 1: WAU8822-EVB SYSTEM ................................................................................................ 6
Figure 2: GUI APPLICATION START-UP SCREEN ...................................................................... 9
Figure 3: DEMO PANEL OVERVIEW .......................................................................................... 10
Figure 4: DEMO CONTROL PANEL ............................................................................................ 12
Figure 5: PATH VIEW ................................................................................................................... 14
Figure 6: DEVICE CONTROL OVERVIEW .................................................................................. 16
Figure 7: DEVICE CONTROL PANEL - DEVICE SETTINGS ...................................................... 17
Figure 8: DEVICE CONTROL PANEL – BOARD SETTINGS ..................................................... 18
Figure 9: DEVICE CONTROL PANEL – POWER MANAGEMENT ............................................. 21
Figure 10: INPUT PATH CONTROL PANEL ............................................................................... 22
Figure 11: ADC/FILTERING CONTROL PANEL ......................................................................... 23
Figure 12: EQUALIZER CONTROL PANEL ................................................................................ 24
Figure 13: INPUT LIMITER AND ALC CONTROL PANEL .......................................................... 25
Figure 14: DAC/PLL/DIGITAL AUDIO PANEL OVERVIEW......................................................... 26
Figure 15: DAC/PLL/DIGITAL AUDIO PANEL – DAC CONTROL............................................... 27
Figure 16: DAC/PLL/DIGITAL AUDIO PANEL – PLL CONTROL ................................................ 28
Figure 17: DAC/PLL/DIGITAL AUDIO PANEL – DIGITAL AUDIO CONTROL ............................ 30
Figure 18: OUTPUT PATH CONTROL PANEL ........................................................................... 32
Figure 19: REGISTER MAP CONTROL PANEL OVERVIEW ..................................................... 33
Figure 20: REGISTER MAP CONTROL DETAILS ...................................................................... 34
Figure 21: SCRIPT CONTROL PANEL ........................................................................................ 35
Figure 22: WAU8822 DAUGHTER CARD; AS ORIENTED ON EVB; WITH MIC ENABLED ..... 37
Figure 23: POWER RELATED CONNECTORS AND OPTIONS ................................................ 38
Figure 24: POWER LINK JUMPERS ........................................................................................... 40
Figure 25: ANALOG INPUTS ....................................................................................................... 41
Figure 26: ANALOG OUTPUTS ................................................................................................... 42
Figure 27: ANALOG OUTPUT OPTIONS .................................................................................... 43
Figure 28: DIGITAL AUDIO INPUTS/OUTPUTS ......................................................................... 46
Figure 29: JUMPERS IN STANDARD CONFIGURATION .......................................................... 50
Figure 30: TEST POINTS ............................................................................................................. 52
Figure 31: WAU8822 DAUGHTER CARD SCHEMATIC ............................................................. 55
Figure 32: ANALOG INPUTS SCHEMATIC ................................................................................. 56
Figure 33: ANALOG OUTPUTS SCHEMATIC ............................................................................. 57
Figure 34: SPDIF INTERFACE SCHEMATIC .............................................................................. 58
Figure 35: USB CONTROLLER SCHEMATIC ............................................................................. 59
Figure 36: LEVEL TRANSLATORS SCHEMATIC ....................................................................... 61
Figure 37: POWER SCHEMATIC................................................................................................. 62
11. LIST OF TABLES
Table 1: POWER OPTIONS ......................................................................................................... 39
Table 2: POWER LINK JUMPERS ............................................................................................... 40
Table 3: ANALOG INPUTS .......................................................................................................... 41
Table 4: ANALOG OUTPUTS ...................................................................................................... 42
Table 5: ANALOG OUTPUT OPTIONS ....................................................................................... 43
Table 6: DIGITAL AUDIO CONNECTOR OPTIONS.................................................................... 48
Table 7: USB CONNECTOR ........................................................................................................ 49
Table 8: SPECIAL CONNECTORS .............................................................................................. 49
Table 9: JUMPER OPTIONS........................................................................................................ 51
Table 10: TEST POINTS .............................................................................................................. 53
WAU8822/NAU8822-EVB Manual Version 1.1
Page 63 of 64
February 22, 2013
12. VERSION HISTORY
VERSION
DATE
PAGE
0.2
June 17, 2008
Preliminary revision
0.3
June 17, 2008
Preliminary revision
0.5
July 24, 2008
Preliminary revision
0.6
December 24, 2008
Preliminary revision
0.7
January 12, 2009
Preliminary revision
1.0
February 04, 2010
General Revision
1.1
February 22,2013
9
DESCRIPTION
Changed the GUI screen capture to reflect
latest version
Important Notice
Nuvoton products are not designed, intended, authorized or warranted for use as components in systems or
equipment intended for surgical implantation, atomic energy control instruments, airplane or spaceship
instruments, transportation instruments, traffic signal instruments, combustion control instruments, or for
other applications intended to support or sustain life. Further more, Nuvoton products are not intended for
applications wherein failure of Nuvoton products could result or lead to a situation wherein personal injury,
death or severe property or environmental damage could occur.
Nuvoton customers using or selling these products for use in such applications do so at their own risk and
agree to fully indemnify Nuvoton for any damages resulting from such improper use or sales.
The information contained in this document may be subject to change
without notice. It is the responsibility of the customer to check the Nuvoton
USA website (www.nuvoton.com) periodically for the latest version of this
document, and any Errata Sheets that may be generated between
document revisions.
WAU8822/NAU8822-EVB Manual Version 1.1
Page 64 of 64
February 22, 2013
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