ANALOG DEVICES UG-119 Service Manual

Evaluation Board User Guide

UG-119

One Technology Way • P. O . Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel : [phone] • Fax : [phone] • www.analog.com

ADAU1361 Evaluation Board

PACKAGE CONTENTS

ADAU1361 evaluation board
USBi control interface board
USB cable
Evaluation board documentation/quick-start guide

SUPPORTING DOCUMENTATION

ADAU1361 data sheet
AN-1056 Application Note, Capless Headphone Virtual Ground

Short-Circuit Protection for the ADAU1361 and ADAU1761
AN-1006 Application Note, Using the EVAL-ADUSB2EBZ
AN-1007 Application Note, Using the ADAU1761 in DSP

Bypass Mode to Emulate an ADAU1361
SigmaStudio Help (included in software installation)

EVALUATION BOARD BLOCK DIAGRAM

GENERAL DESCRIPTION

This user guide explains the design and setup of the ADAU1361
evaluation board.

The EVAL-ADAU1361Z includes both single-ended and differ­ential stereo line-level analog audio inputs as well as a digital
audio interface. Single-ended and differential analog outputs are
also provided, as well as a stereo capless headphone output.

The USBi provides power and the I
the evaluation board. A switch allows the ADAU1361 to operate at
either 3.3 V or 1.8 V. The SigmaStudio™ programming software is
used for all register controls and SigmaDSP® core programming.

A header is included for interfacing to stereo digital microphones.

2

C communications interface to

I2C COMMUNICATI ONS

DIGITAL

MIC

INPUTS

ANALOG

AUDIO

INPUTS

INTERFACE (USBi )

ADAU1361

Figure 1.

POWER
SUPPLY

OUTPUTS

ANALOG

AUDIO

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PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.

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UG-119 Evaluation Board User Guide

TABLE OF CONTENTS

Package Contents .............................................................................. 1

Supporting Documentation ............................................................ 1

General Description ......................................................................... 1

Evaluation Board Block Diagram ................................................... 1

Revision History ............................................................................... 2

Setting Up the Evaluation Board—Quick Start ............................ 3

SigmaStudio Software Installation ............................................. 3

Hardware Setup, USBi .................................................................. 3

Powering the Board ...................................................................... 3

Connecting Audio Cables ........................................................... 3

Switch and Jumper Settings ......................................................... 3

Setting Up the Registers in SigmaStudio ................................... 4

REVISION HISTORY

3/10—Revision 0: Initial Version

Using the Evaluation Board .............................................................5

ADAU1361 Low-Power Codec ...................................................5

Power ...............................................................................................5

Analog Audio Input ......................................................................5

Analog Audio Output ...................................................................5

Clocking the Evaluation Board ...................................................6

External Digital Audio Header ....................................................6

Digital Microphone and Jack Detection Input ..........................6

I2C Communications Header ......................................................6

Evaluation Board Schematics and Artwork ...................................7

Ordering Information .................................................................... 10

Bill of Materials ........................................................................... 10

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Evaluation Board User Guide UG-119

SETTING UP THE EVALUATION BOARD—QUICK START

SigmaStudio SOFTWARE INSTALLATION

To install the SigmaStudio software, follow these steps:

1. Open the provided .zip file and extract the files to your PC.

Alternately, insert the SigmaStudio CD into the PC optical
drive and locate the SigmaStudio folder on the CD.

2. If Microsoft® .NET Framework Version 2.0 is not already

installed on the PC, install it by double-clicking dotnetfx.exe.

3. Install SigmaStudio by double-clicking setup.exe and

following the prompts. A computer restart is not required.

HARDWARE SETUP, USBi

To set up the USBi hardware, follow these steps:

1. Plug the USBi ribbon cable into Header J1.

2. Connect the USB cable to your computer and to the USBi.

3. When prompted for drivers, follow these steps:
a) Choose Install from a list or a specific location.

b) Choose Search for the best driver in these locations.
c) Check the box for Include this location in the search.
d) The USBi driver is located in C:\Program Files\

Analog Devices Inc\Sigma Studio\USB drivers.

e) Click Next.
f) If prompted to choose a driver, select CyUSB.sys.
g) If the PC is running Windows® XP and you receive the

message that the software has not passed Windows
Logo testing, click Continue Anyway.

SWITCH AND JUMPER SETTINGS

To configure the board for stereo analog input and output, make
sure that the switches and jumpers are set as follows (see Figure 2).

• The ADAU1361 uses the on-board oscillator as a master

clock source (S5 switched to OSC).

• Regulator output VDD is set for 3.3 V operation

(S1 switched to 3.3 V).

• Power is supplied by USB (J5 is connected with a jumper).

• AVDD is connected to VDD (J17 connected).

• IOVDD and AVDD operate at VDD (J16 connected).

• DAC_SDATA and ADC_SDATA are tied together to loop-

back data from ADC to DAC (jumper across two bottom
right pins of J6).

2

• I

C control mode is hardwired on board.

POWERING THE BOARD

The board can be powered either by the USBi or by an external
power supply. For the board to run independently from the
computer, disconnect Jumper J5 and connect the power supply
at J2. The power indicator LED D1 should now be lit.

CONNECTING AUDIO CABLES

In this example, the board is set up for stereo analog inputs and
stereo analog outputs, using 3.5 mm (1/8”) cables.

1. Connect the audio source to Input Jack J24.

2. Connect Output Jack J19 to your headphones.

Figure 2. Evaluation Board Setup and Configuration

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UG-119 Evaluation Board User Guide

SETTING UP THE REGISTERS IN SigmaStudio

This section details how to pass an audio signal from the ADC
inputs to the DAC outputs using the headphone drivers. The
codec is configured with SigmaStudio.

1. Create a new project. The Hardware Configuration

tab opens.

2. Drag an ADAU1361 cell and a USBi cell into the blank

work area.

3. Connect the USBi cell to the ADAU1361 cell by clicking

and dragging from the top blue output pin of the USBi cell
to the green input pin of the ADAU1361 cell.

Your screen should now resemble Figure 3.

1. In the IC1-ADAU1361 Register Controls tab, select the 3

and 4 in Capless HP Out option from the Automatic
Startup list and click Load Preset (see Figure 4).

This locks the PLL and sets up the registers for proper
routing of the record and playback paths. If the PLL has
successfully locked, then the box under PLL Lock Bit
should turn from red to green.

2. Start playing the audio source; you should hear audio on the

outputs.

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Figure 4. Hardware Configuration Tab—Register Setup

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Figure 3. Hardware Configuration Tab

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