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DS90UB964-Q1EVM: Configuration of switch S1

sagarkirtany
Genius 4940 points
Part Number: DS90UB964-Q1EVM

Hello,

The device user guide shows Figure 1-3 of the EVM on page 9.
In this picture, SW1.1 is set to 'ON' position, and SW1.2 is set to 'OFF' position.
As per table 1-16 on page 15 of the guide, the defaults for switch SW1 are SW1.1 set to (Input=L), and SW1.2 set to (Input=H).

I am getting confused between ON/OFF and L/H.
My understanding is that ON=H, OFF=L.
If I want to operate the device normally, SW1.1 should be set to 'OFF' position, and SW1.2 should be set to 'ON' position (refer image below), which is exactly opposite to that shown in the user guide.

Please confirm if my understanding is correct.

Thanks and regards.

  • +1
    TI__Mastermind 18930 points

    Hello,

    You are correct that H=ON and L=OFF.

    For SW1, you want to keep TESTEN = L and PDB = H, for normal operation of the device:

    Please follow the tables provided in the EVM user's Guide, as there are multiple possible configurations for this EVM. The images shown in the EVM User's Guide are one example of the configurations that the user can set.

    Best,

    Justin Phan