Analog Devices EVAL-AD5753SDZ, Руководство пользователя

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EVAL-AD5753SDZ User Guide UG-1492
Rev. 0 | Page 11 of 22
CONFIGURING 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 (Label L11, Figure 8) symbol in the GUI to display
the DAC configuration register. Select the appropriate settings and
then click
Apply Changes (Label A, Figure 8). 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 or 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 (Label N, Figure 8) button, or pull the
LDAC pin low to update the DAC output register with the
values in the DAC input register. Select the
OUT_EN checkbox
to enable the DAC output and then click Apply Changes. The
programmed voltage or current is reflected at the VI
OUT
pin.
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Figure 11. AD5753 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 the
AD5753 data sheet. Writing to the ADC
configuration register is simplified because of the multiple
configuration modes.
Dropdown menus and a hexadecimal textbox are available within
the GUI (see Figure 12) to access the ADC configuration register.
Click the
Configure ADC
button instead of the
Apply Changes
button to write to the ADC configuration register.
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Figure 12. AD5753 ADC Configuration Register
UPDATING DIAGNOSTIC RESULTS
The AD5753 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.
Write 1 to the respective error flags to update the error flag status.
The Update and Readback button shown in Figure 13 is
available on the ACE GUI to update the digital and analog
diagnostic results registers. Click this button to initiate a write
of 1 (by selecting the box) to the selected error flag, and then
read back the updated diagnostic result. Figure 13 shows the
digital diagnostic results register. Figure 14 shows the analog
diagnostic results register.
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Figure 13. AD5753 Digital Diagnostic Results Register