Texas Instruments TPS65916EVM, User Manual, Page: 17 / 24

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Setup and Operation
17 SLIU021 – September 2016
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TPS65916 EVM User’s Guide
To set the desired signal to a logic low, while the new check box displays Low , click the corresponding Set
button. The corresponding indicator LED should stay off.
To set the desired signal to a logic high, check the Low check box and the text changes to display High .
Next, click the Set button and the corresponding indicator LED should light ( Figure 15 ).
Figure 15. GPIO Configuration After GPIO_1 Set to Logic High
3.2.2 Communicating With Device – I
2
C
The Low Level Configuration page ( Figure 16 ) of the GUI is where I
2
C communication with the device is
done. This page has four groups (blocks) of registers. Expand each group by clicking the “+” next to the
group, which lists all the registers in that group. Additional columns display when the name of a register is
selected (highlighted), including the Address, Default state, R/W status, and bit fields of the register.
• To read data from the register, select the appropriate register and click the Read Register icon .
• The register data displays on the right side of the page in the Bit Fields columns labeled 7 to 0.
• To write data to the register, click the bits in the Bit Fields labeled 7 to 0 for the register to write. The
register will be written to immediately. If writes should not be immediate, change the write type using
the
Update Mode pulldown to Deferred , change the bits to the desired value, and click the Write
Register icon .