UG-1268
EVAL-AD5758
User Guide
Rev. 0 | Page 10 of 20
SETTING THE DAC OUTPUT
To configure the DAC output, use the pop-up menu for the DAC
configuration register (see Figure 11), available in the GUI. Click
the
16 Bit DAC
symbol in the GUI to display the DAC config-
uration register. Select the appropriate settings, and then click
Apply Changes
. It is recommended to disable the output until the
correct value in the DAC input register is written to the device.
To change the DAC voltage/current output level, write the
appropriate hexadecimal code to the DAC input register and
then click
Apply Changes.
Issue a software LDAC command
using the
SW LDAC
button, or pull the LDAC pin low to
update the DAC output register with the values in the DAC
input register. Ensure that the fault protect switch, FPS_EN, is
enabled before enabling the output. Enable the DAC output,
OUT_EN, and then click
Apply Changes.
The programmed
voltage/current is then reflected at the VI
OUT
pin.
167
10-
0
09
Figure 11.
AD5758
DAC Config Register
Pop-Up Menu
WRITING TO THE ADC CONFIGURATION REGISTER
The procedure to set up and configure the ADC sequencer is
discussed in detail in the
AD5758
data sheet. For this reason,
writing to the ADC configuration register through the
Apply
Changes
function is disabled.
Drop-down menus and a hexadecimal texbox are available within
the GUI (see Figure 12) to access the ADC configuration register.
Clicking the
Configure ADC
button initiates a write to the
ADC configuration register.
16
71
0-
0
10
Figure 12.
AD5758
ADC Configuration Register
UPDATING DIAGNOSTIC RESULTS
The
AD5758
has a digital diagnostic results register and an analog
diagnostic results register, both of which contain error flags for the
on-chip digital and analog diagnostic features. Writing 1 to the
respective error flags updates the error flag status.
To update the digital and analog diagnostic result registers, an
Update and Readback
button is available on the
ACE
GUI.
Clicking this button initiates the writing of a 1 to the selected
error flag and then reads back the updated diagnostic result.
Figure 13 shows the digital diagnostic results register. Figure 14
shows the analog diagnostic results register.
167
10-
0
1
1
Figure 13.
AD5758
Digital Diagnostic Register
16710
-012
Figure 14.
AD5758
Analog Diagnostic Register
