Setting Up The Evaluation Board; Standalone Mode; Spi Control; Automated Register Window Builder Software Installation - Analog Devices EVAL-AD1974AZ User Manual

Evaluation Board User Guide

SETTING UP THE EVALUATION BOARD

STANDALONE MODE

It is possible to run the board and the
alone mode, which fixes the functionality of the AD1974 into
the I S data format, running at 256 × f
2
dition). The ADC BCLK and LRCLK ports are flipped between
slave and master (input and output) by tying COUT (Pin 24) to
low or high. This is accomplished by moving the J5 jumper to
either 0 or SDA/1 (see Figure 2 and Figure 3 for the correct
settings).
J5 J6
ADDR0
Figure 2. Standalone Slave Mode
J5 J6
ADDR0
Figure 3. Standalone Master Mode
With the control jumpers set to standalone master mode, the S2
DIP switches set to on, the S3 DIP switch sets to off, and both
rotary hex mode switches, S4 and S5, set to 0, the AD1974 is the
LRCLK, BCLK, and SDATA source. The default MCLK jumper
setting uses the on-board oscillator as MCLK for the AD1974 as
well as the S/PDIF transmitter and HDR1 port. The board
passes analog audio from the IN1 stereo to the S/PDIF and
HDR1 output ports. IN2 can be selected by changing S3,
Position 8, to on. Other serial audio clock and data routing
configurations are described in the Switch and Jumper Settings
section.

SPI CONTROL

The evaluation board can be configured for interactive control
of the registers in the AD1974 by connecting the SPI port to the
USBi. The SPI jumper settings are shown in Figure 4.
J5 J6
ADDR0
Figure 4. SPI Control
The Automated Register Window Builder software controls
the AD1974 and is available at www.analog.com/AD1974.
AUTOMATED REGISTER WINDOW BUILDER
SOFTWARE INSTALLATION
The Automated Register Window Builder is a program that
launches a graphical user interface for direct, live control of the
AD1974 registers. The GUI content for the part is defined in a
part-specific .xml file; this file is included in the software
AD1974 ADC in stand-
(default register con-
S
J7 J8
ADDR1
J7 J8
ADDR1
J7 J8
ADDR1
installation. To install the Automated Register Window
Builder software, follow these steps:
1. At www.analog.com/AD1974,
list.
2. In the list, find Evaluation Boards & Development Kits
and click Evaluation Boards/Tools to open the provided
ARWBvXX.zip file.
3. Double-click the provided .msi file to extract the files to an
empty folder on your PC.
4. Then double-click setup.exe and follow the prompts to
install the Automated Register Window Builder. A
computer restart is not required.
5. Copy the .xml file for the AD1974 from the extraction
folder into the C:\Program Files\Analog Devices
Inc\AutomatedRegWin folder, if it does not appear in the
folder after installation.

HARDWARE SETUP, USBi

To set up the USBi hardware, follow these steps:
1. Plug the USBi ribbon cable into the J1 control interface
header.
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. Find the USBi driver in C:\Program Files\ Analog
Devices Inc\AutomatedRegWin\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 a
message that the software has not passed Windows
logo testing, click Continue Anyway.
You can now open the Automated Register Window Builder
application and load the .xml file for the part onto your
evaluation board.

POWERING THE BOARD

The AD1974 evaluation board requires power supply input of
±12 V dc and ground to the three binding posts; +12 V draws
~250 mA and −12 V draws~100mA. The on-board regulators
provide two 3.3 V rails, one each for AVDD and DVDD for the
AD1974. DVDD also supplies power for the active peripheral
components on the board. Jumpers are provided to allow access
to the power connections of the AD1974. These are convenient
points to insert a current measuring device. The only components
on the AD1974 side of the jumper are the part itself and the
local power supply decoupling. The jumper blocks are shown in
Figure 5.
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