Datasheet

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18R
V
16IOUT
EXTIO
FS
5 DAC5681/81z/82z EVM Software
5.1 Software Functionality Overview
DAC5681/81z/82z EVM Software www.ti.com
where V
EXTIO
is the voltage at pin EXTIO. This voltage is 1.2 V when using the internally provided
bandgap reference voltage source. The internal reference can be disabled and overridden by an external
reference by connecting a voltage source to EXTIO and connecting EXTLO to +3.3 VA (JP8 EXTLO
connected between pins 1 and 2). The specified range for external reference voltages must be observed.
The EVM Control Software is started by accessing the Windows start → All Programs →
Texas Instruments DACs cascading menus.
The DAC EVM application helps you to:
• Configure the DAC and CDCM7005 registers.
• Save and load these register settings using text files.
• Visualize the data path through the DAC
• Download a pattern to a TSW3100 Pattern Generator System (link to TSW3100 EVM folder).
This section provides you an overview of the software settings and functionality for the entire DAC
Graphical User Interface. The software has five groups of settings that help you modify the functionality of
the active panels. You can switch between these settings by selecting one of the Menu items described in
Table 4 .
Table 4. Software Main Menu Selections
Menu Item Top Panel Bottom Panel Section
Example Screen
Functionality Reference
EVM Home EVM and DAC serial information. not applicable Section 5.2
EVM communication status Figure 9
Table 6
DAC5682z DAC Register Configuration DAC data path under the current Section 5.3
Diagram register settings Figure 10
Table 7
Register Config DAC Register Configuration CDCM7005 Register Section 5.4
Configuration Figure 11
Table 8
TSW3100 Config DAC Register Configuration TSW3100 Configuration Section 5.5
Pattern Generator display Figure 12
Table 9
Help DAC Register Configuration DAC data path and help window Section 5.6
The DAC software interface controls are divided into areas. The functionality of these areas is described in
Section 5.2 through Section 5.6 .
Table 5. Software Area Descriptions
Area Description
Menu Switch between the main functionality settings described in Table 4 .
DAC5682Z Home Displays DAC part serial information and EVM status.
USB and Readback buttons Reset the USB port to begin a new data session. Disable DAC read capabilities (simulation
mode).
DAC5682z Register Table Displays DAC register settings in binary and hexadecimal formats.
12 DAC5681/81z/82z EVM SLAU236A – November 2007 – Revised October 2008
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