Quick Start
To Burn the EEPROM, that is, to copy the data from the operating memory to the non-volatile memory,
press “BURN EEPROM” button.
NOTE:
At the time of writing this manual, Texas Instruments ensured the performance of the
EEPROM for up to 10 write cycles (Burns).
Time Log
Select “Running Plot/Data Log” from the panel on the left of the main window. Select the “Running Plot &
Data Log” tab if not already activated. The following page will be shown:
Figure 8.
The ‘START’ button begins the running plot (strip chart) of the Temperature sensor output and the
corresponding V
DACx
output values for the given LUT – as implemented in
. The GUI reads the
internal TEMPM/TEMPL, DAC0M/DAC0L, and DAC1M/DAC1L registers and computes the equivalent
temperature (°C), and voltage at V
DACx
outputs (here the assumption is made that the internal DAC
reference is 5 V, and the DAC itself is ideal). The sampling interval can be set with the “Sampling Time”
control.
“STOP” terminates the logging. At that time a text log file is created in the ‘C:/Program Data/Texas
Instruments/LMP92066 EVM GUI/Logs/Datalog’ directory that contains the plot data.
At any time when the “Running Plot & Data Log” is executing, the user can select the “Data Path
Control” page to verify the state of the device – press “Read All” to refresh the display. For
example, the state of the OVRD_CNTL register (controls the OVERRIDE multiplexers in the signal
path), and DACx_BASEM.BYP (controls the multiplexer at the output of the LUT/ALU/Sum) will
affect the “Running Plot” output.
10
LMP92066 Dual Temperature-Controlled DAC Evaluation Module
SNAU153 – MARCH 2014
Copyright © 2014, Texas Instruments Incorporated