Datasheet

PGA400 EVM User Guide
TI CONFIDENTIAL – NDA Restrictions
Page 34 of 50
7.5.1.1 DAC1 Output Read/Set
The “Read” and “Set” buttons in the DAC1 region can be used to directly enter in the desired
DAC1 values. The buttons either read to or write from the DAC1 ESFRs 0xB7/0xB9.
7.5.1.2 DAC1 Output Adjust Up/Down
The “Coarse” Up/Down and “Fine” Up/Down buttons are used to adjust the value of the DAC1
output register up or down in set increments. The buttons write to the DAC1 output bits in
ESFRs 0xB7/0xB9. The “Fine” adjustments move the DAC1 output value by one, while the
“Coarse” buttons move the DAC1 output value by 50.
7.5.1.3 DAC2 Output Read/Set
The “Read” and “Set” buttons in the DAC2 region can be used to directly enter in the desired
DAC2 values. The buttons either read to or write from the DAC2 ESFRs 0xBA/0xBB.
7.5.1.4 DAC2 Output Adjust Up/Down
The “Coarse” Up/Down and “Fine” Up/Down buttons are used to adjust the value of the DAC2
output register up or down in set increments. The buttons write to the DAC2 output bits in
ESFRs 0xBA/0xBB. The “Fine” adjustments move the DAC2 output value by one, while the
“Coarse” buttons move the DAC2 output value by 50.
7.6 OWI Tab
The OWI tab in the GUI is used to initialize the OWI communication interface in the PGA400-Q1
along with perform direct OWI write/reads. A thorough walk-through of the OWI communication
is described in the “OWI Quick Start Guide” document. An image of the OWI tab and description
of the buttons can be found below.