Evaluation Board User Guide

UG-272

Rev. A | Page 5 of 12

USING THE EVALUATION BOARD SOFTWARE

Figure 4. AD9833 DDS Evaluation Software

SETTING UP THE DIGITAL INTERFACE

The first software step in setting up the AD9833 to make some

measurements is to set the DIGITAL INTERFACE value. The

EVAL-SDP-CB1Z has two connectors plugs: connectorA and

connectorB. Select the connector you want to use with the

AD9837 evaluation board from the drop-down box.

The SPI Frame Frequency (/SYNC) box and SCLK Frequency

box can also be set in this window. If the SPI interface speed has

not been decided, leave the default values shown in Figure 5.

Figure 5. Digital Interface