Datasheet

Maxim Integrated │ 8
MAX31790 Evaluation Kit Evaluates: MAX31790
www.maximintegrated.com
Reads
Each register of the device can be read from the GUI
by the simple press of the associated Read button. The
registers are located in one of the tabs as defined below:
● Main Tab
(Figure1):
● GlobalConfigurationregister
● PWMFrequencyregister
● FanChannel1–6 Tabs (Figure2):
● FannConfigurationregister(wherendenotesthe
channel)
● FannDynamicsregister
● TachnCountregister
● PWMOUTnDutyCycleregister
● PWMOUTnTargetDutyCycleregister
● TACHnTargetDutyCycleregister
● WindownRegister
● Fan Faults Tab (Figure3):
● FanFaultStatus1register
● FanFaultStatus2register
● FanFaultMask1register
● FanFaultMask2register
● FailedFanOptions/SequentialStartregister
Pressing a Read button performs a single read of the
register(s) and updates the associated data fields. There
is also an option to do continuous reads of the device.
This AutoRead feature is located in the upper right
section of the GUI. To start polling at a 1Hz frequency,
press the Start AutoRead button. Each poll reads all
registers shown in the dashboard and the active tab then
updates the associated data fields. Once the continuous
reads start, the button text changes to Stop AutoRead
for the user to stop the reads. It is not recommended
to change register parameters through a write while
AutoRead is enabled.
The GUI provides a very simple way to dump all the
device registers to a text (.TXT) file. Under the Main Tab
sheet, press the Register Dump button and provide a
folder and file name. An example of a Register Dump is
showninFigure4.
Figure 4. MAX31790 Data Table