Analog Devices EVAL-ADAU1777Z Manual de usuario

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EVAL-ADAU1777Z

ANALOG DEVICES

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EVAL-ADAU1777Z User Guide

UG-1055

One Technology Way •P. O. Box 9106 •Norwood, MA 02062-9106, U.S.A. •Tel: 781.329.4700 •Fax: 781.461.3113 •www.analog.com

Evaluating the ADAU1777 Four ADC, Two DAC, Low Power Codec

with Audio Processor

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT

WARNING AND LEGAL TERMS AND CONDITIONS.Rev. 0 | Page 1 of 25

EVALUATION KIT CONTENTS

EVAL-ADAU1777Z evaluation board

EVAL-ADUSB2EBZ (USBi) communications adapter

USB cable with mini-B plug

Evaluation board/software quick start guide

DOCUMENTS NEEDED

ADAU1777 data sheet

AN-1006 Application Note

GENERAL DESCRIPTION

This user guide explains the design and setup of the E VA L -

ADAU1777Z evaluation board.

This evaluation board provides full access to all analog and

digital inputs/outputs on the ADAU1777. The ADAU1777 core

is controlled by Analog Devices, Inc., SigmaStudio™ software,

which interfaces to the board via a USB connection. The E VA L -

ADAU1777Z can be powered by a single AAA battery, by the

USB bus, or by a single 3.8 V to 5.5 V supply; any of these

supplies are regulated to the voltages required on the board. The

printed circuit board (PCB) is a 4-layer design, with a single

ground plane and a single power plane on the inner layers. The

board contains connectors for external microphones and

speakers. The master clock can be provided externally or by the

on-board 12.288 MHz passive crystal.

EVALUATION BOARD TOP SIDE

15054-001

Figure 1. EVAL-ADAU1777Z Top Side Assembly

UG-1055 EVAL-ADAU1777Z User Guide

Rev. 0 | Page 2 of 25

TABLE OF CONTENTS

Evaluation Kit Contents................................................................... 1

Documents Needed.......................................................................... 1

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

Evaluation Board Top Side .............................................................. 1

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

Evaluation Board Block Diagrams ................................................. 3

Setting Up the Evaluation Board .................................................... 5

Installing the SigmaStudio Software .......................................... 5

Installing the USBi (EVA L -ADUSB2EBZ) Drivers.................. 5

Default Switch and Jumper Settings .......................................... 7

Powering Up the Board ............................................................... 7

Connecting the Audio Cables..................................................... 7

Setting Up Communications in SigmaStudio........................... 7

Creating a Basic Signal Flow....................................................... 8

Downloading the Program to the DSP.................................... 10

Using the Evaluation Board .......................................................... 11

Power............................................................................................ 11

Inputs and Outputs .................................................................... 11

MP Pins........................................................................................ 13

Serial Audio Interface ................................................................ 13

Communications Header (J1) .................................................. 14

Self-Boot ...................................................................................... 14

Power-Down ............................................................................... 15

Hardware Description.................................................................... 16

Jumpers ........................................................................................ 16

Integrated Circuits (ICs) ........................................................... 16

LED .............................................................................................. 16

Evaluation Board Schematics and Artwork................................ 17

Ordering Information.................................................................... 24

Bill of Materials........................................................................... 24

REVISION HISTORY

12/2016—Revision 0: Initial Version

EVAL-ADAU1777Z User Guide UG-1055

Rev. 0 | Page 3 of 25

EVALUATION BOARD BLOCK DIAGRAMS

OSC

POWER

SUPPLY

REGULATION

POWER/

BYPASS

SWITCH

C/SPI

COMMUNICATIONS

HEADER

SELF-BOOT

EEPROM

ANALOG MIC

INPUTS

STEREO LINE

INPUT

DIGITAL MIC

INPUTS

SERIAL AUDIO

CONNECTOR

PINS

DIFFERENTIAL

STEREO OUTPUT

SINGLE-ENDED

STEREO OUTPUT

XTAL

OSCILLATOR

MASTER

CLOCK

ADAU1777

15054-002

Figure 2. Functional Block Diagram

15054-003

POWER/BYPASS SWITCH

POWER SUPPLY

DIFFERENTIAL/

STEREO OUTPUTS EEPROM

OSC

SERIAL AUDIO

CONNECTOR

MULTIPURPOSE PINS

PDM DMIC

HEADERS

I2C/SPI

HEADER

SELF-BOOT

SWITCH

ANALOG INPUTS

ADAU1777

STEREO

ANALOG

Figure 3. Board Layout Block Diagram

UG-1055 EVAL-ADAU1777Z User Guide

Rev. 0 | Page 4 of 25

15054-004

Figure 4. Default Jumper and Switch Settings (Solid Black Rectangle Indicates a Switch or Jumper Position)

EVAL-ADAU1777Z User Guide UG-1055

Rev. 0 | Page 5 of 25

SETTING UP THE EVALUATION BOARD

INSTALLING THE SigmaStudio SOFTWARE

Download and install the latest version of SigmaStudio by

completing the following steps:

1. Install the latest version of Microsoft® .NET Framework if

it is not already installed on the PC. The latest version of

the .NET Framework can be downloaded from the

Microsoft website.

2. Go to www.analog.com/SigmaStudio and download the

latest version of SigmaStudio from the Downloads and

Related Products section.

3. Log in to your myAnalog account. (If you do not have an

account, go to www.analog.com/MyAnalog, click Log In,

and then click Register to create a new account.)

4. Fill in the download form and choose SigmaDSP as the

target hardware.

5. Download the installer and execute the executable. Follow

the prompts, including accepting the license agreement, to

install the software.

INSTALLING THE USBi (EVAL-ADUSB2EBZ)

DRIVERS

SigmaStudio must be installed to use the USB interface (USBi).

After the SigmaStudio installation is complete,

1. Connect the USBi to an available USB 2.0 port using the

USB cable included in the evaluation board kit. (The USBi

does not function properly with a USB 3.0 port.)

2. Install the driver software (see the Using Windows XP

section or the Using Windows 7 or Windows Vista section

for more information).

Using Windows XP

After connecting the USBi to the USB 2.0 port, Windows® XP

recognizes the device (see Figure 5) and prompts the user to

install the drivers.

15054-005

Figure 5. Found New Hardware Notification

1. From the Found New Hardware Wizard window, select

the Install from a list or specific location (Advanced)

option and click Next (see Figure 6).

15054-006

Figure 6. Found New Hardware Wizard—Installation

2. Select Search for the best driver in these locations, select

Include this location in the search, and click Browse to

find the USB drivers subdirectory within the SigmaStudio

directory (see Figure 7).

15054-007

Figure 7. Found New Hardware Wizard—Search and Installation Options

UG-1055 EVAL-ADAU1777Z User Guide

Rev. 0 | Page 6 of 25

3. When the Hardware Installation warning appears, click

Continue Anyway (see Figure 8).

15054-008

Figure 8. Hardware Installation Warning

The USBi drivers are now installed. Leave the USBi connected

to the PC.

Using Windows 7 or Windows Vista

After connecting the USBi to the USB 2.0 port, Windows 7 or

Windows Vista recognizes the device and installs the drivers

automatically (see Figure 9). After the installation is complete,

leave the USBi connected to the PC.

15054-009

Figure 9. USBi Drivers Installed Correctly

Confirming Proper Installation of the USBi Drivers

To confirm that the USBi drivers have been installed properly,

1. With the USBi still connected to the USB 2.0 port of the

PC, check that both the yellow I2C LED and the red power

indicator LED are illuminated (see Figure 10).

15054-010

Figure 10. State of USBi Status LEDs After Driver Installation

2. In Windows Device Manager, under the Universal Serial

Bus controllers section, check that Analog Devices USBi

(programmed) appears as shown in Figure 11.

15054-011

Figure 11. Confirming Driver Installation Using the Device Manager

EVAL-ADAU1777Z User Guide UG-1055

Rev. 0 | Page 7 of 25

DEFAULT SWITCH AND JUMPER SETTINGS

The J8, J10, J12, and J17 jumpers must be connected to provide

power to the ADAU1777, and the J3 jumper must be set to the

USB/EXT power setting. The MP pin jumpers (J9) can be

connected as desired to use the MP push-buttons or switches.

The microphone bias jumpers, J11 and J14, can be connected if

microphone bias is needed on the AIN0 and/or AIN1 inputs.

Switch S7 selects whether the board is to be powered up or if

audio is to be bypassed from input to output with the board

powered down. For normal operation, slide the switch to the

left. S1 selects whether the ADAU1777 is powered from 3.3 V

or 1.8 V; the default is 3.3 V. If powering the board via the USBi,

ensure that the switch on the bottom of the USBi board is set to the

correct voltage (1.8 V or 3.3 V). S2 controls the self-boot operation.

By default, S2 is slid down to disable self-boot operation.

The following is an example setup for using the EVAL-

ADAU1777Z analog stereo in to analog stereo out operation.

POWERING UP THE BOARD

To power up the evaluation board, connect the ribbon cable of

the USBi to J1 (control port) of the EVAL-ADAU1777Z.

CONNECTING THE AUDIO CABLES

Connect a stereo audio source to J22 (AIN2/3). Connect

headphones or powered speakers to J23 (stereo output).

15054-012

Figure 12. Stereo Out (J23) and Stereo In (J22)

SETTING UP COMMUNICATIONS IN SigmaStudio

Start SigmaStudio by double-clicking the shortcut on the

desktop.

Click File…New Project or press Ctrl+N to create a new

project. The default view of the new project is the Hardware

Configuration tab.

To use the USBi in conjunction with SigmaStudio, go to the

Communication Channels subsection of the toolbox on the

left side of the Hardware Configuration tab, select USBi, and

click and drag it to the right to add it to the project space (see

Figure 13).

15054-013

Figure 13. Adding the USBi Communication Channel

If SigmaStudio cannot detect the USBi on the USB port of the

PC, the background of the USB label is red (see Figure 14). This

can occur when the USBi is not connected or when the drivers

are incorrectly installed.

15054-014

Figure 14. USBi Not Detected by SigmaStudio

If SigmaStudio detects the USBi on the USB port of the PC, the

background of the USB label changes to green (see Figure 15).

15054-015

Figure 15. USBi Detected by SigmaStudio

To add an ADAU1777 to the project, select ADAU1777 from

the Processors (ICs / DSPs) list, and drag it to the project space

(see Figure 16).

UG-1055 EVAL-ADAU1777Z User Guide

Rev. 0 | Page 8 of 25

15054-016

Figure 16. Adding an ADAU1777

To use the USB interface to communicate with the target

integrated circuit (IC), connect it by clicking and dragging a

wire between the blue pin of the USBi and the green pin of the

IC (see Figure 17). The corresponding drop-down box of the

USBi automatically fills with the default mode and channel for

that IC.

15054-017

Figure 17. Connecting the USB Interface to an ADAU1777 IC

CREATING A BASIC SIGNAL FLOW

To access the Schematic tab, where a signal processing flow

can be created, click the Schematic tab at the top of the screen

(see Figure 18).

15054-018

Figure 18. Schematic Tab

The left side of the schematic view includes the Toolb ox, which

contains all of the algorithms that can run in the SigmaDSP.

From within the IO > Audio Input > Pair 2 folder, select the

Input cell (see Figure 19).

15054-019

Figure 19. Input Cell Selection

Click and drag the Input cell into the blank schematic space to

the right of the Toolbox (see Figure 20).

15054-020

Figure 20. Input Cell

Go to the IO > Audio Output folder and select the Output cell

(see Figure 21).

15054-021

Figure 21. Output Cell Selection

Click and drag an output cell to the schematic. Repeat this step

to create two outputs (see Figure 22). Make sure that the output

cells are assigned to OUT0 and OUT1, respectively.

15054-022

Figure 22. Output Cells

Connect the cells together by clicking a blue output dot and

dragging to the green output dot of the next cell, connecting the

Input 2to OUT0 and Input 3to OUT1 (see Figure 23).

15054-023

Figure 23. Connected Signal Flow

The basic signal flow is now complete with the stereo input/output.

EVAL-ADAU1777Z User Guide UG-1055

Rev. 0 | Page 9 of 25

Add Volume Control

To add volume control via the VOL− and VOL+ buttons, add

jumpers to S6 and S4 on J9 (see Figure 24).

15054-024

Figure 24. Jumpers for Volume Push-Buttons

Go to the Hardware Configuration tab. In the bottom left

corner, click the IC 1 – ADAU1777 Register Control tab (see

Figure 25).

15054-025

Figure 25. IC 1 - ADAU1777 Register Control Tab

Find the Output/Serial Port tab in the top right corner. In the

bottom left corner of the Output/Serial Port tab, the Push

Button Vol section is located. Locate the drop-down box for

Converters Controlled by PushButton Volume: and change its

value to All ADCs (see Figure 26).

15054-026

Figure 26. Output/Serial Port Tab

Go to the Pin/Pad Control tab. In the Pin Modes section,

change the value of DAC_SDATA/MP0 to Push-button volume

down, and change the value of ADC_SDATA0/PDMOUT/MP1

to Push-button volume up (see Figure 27).

15054-027

Figure 27. Pin/Pad Control Tab

The schematic is ready to be compiled and downloaded to the

evaluation board.

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