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Original question:

TLC59581: The Zener diode on the Internal Pre-Charge FET

TLC59581: Purpose of Reverse_V bits in FC2 Register?

Tim Tashpulatov1
Prodigy 120 points
Part Number: TLC59581

Hi,

FC2 offers an impressive number of display enhancement possibilities. Unfortunately, not all FC2 bits are clearly documented.

For example, what is the purpose of Reverse_V _G field (bits 38, 39)? They "control reverse voltage in green color", from 'Low' to 'High', but how exactly this feature works?

Thanks in advance.

Regards

Tim

  • 0
    TI__Expert 3190 points

    Hi Tim,

    I am not sure about your application, it is only useful when used in LED Display area.

    It is used to solve the interference between high data channel and low data channel. Just set to a higher value.

    Regards,

    Shawn.

  • 0 in reply to Shawn Ding
    Prodigy 120 points

    Hi Shawn,

    Thank you for your reply. Our application is modular LED displays. We are interested to get most of our prototype designs for best image quality. It is therefore vital to know as much as possible of the components we intend to use, TLC59581 in this case.

    I will certainly experiment with different settings for Reverse_V bits, still it would be great to know in detail what physical phenomena they relate to.

    Regards

    Tim

  • 0 in reply to Tim Tashpulatov1
    TI__Expert 3190 points

    Hi Tim,

    Understood, when this value is too large, if you put a white block near to the black, the black will be coupled to dark, so the smaller is better.

    However, if too small(=0), it may influence the brightness of the low grayscale.

    Regards,

    Shawn.