Texas Instruments TCA8418E, User Manual, Page: 13 / 24

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Setup
5.5.2.3 Reading and Writing Registers
All registers in the TCA8418E can be read using the TCA8418E-EVM GUI. Figure 16 shows how to read
register 0x0E:
Figure 16. Reading Register 0x0E
Click the Read Register button and the following appears in the activity log text ( Figure 17 ):
Figure 17. Result of Reading Register 0x0E
Similarly, any register can be written as well. Figure 18 shows how to write 0xA6 to register 0x0E:
Figure 18. Writing 0xA6 to Register 0x0E
The activity log reflects the newly written register:
Figure 19. Result of Writing 0xA6 to Register 0x0E
13 SLVUAA2 – August 2014 TCA8418E Keypad Scan EVM
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