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TLC5973 input problem! HELP!

Emmanuel Pignatta
Prodigy 10 points
Other Parts Discussed in Thread: TLC5973

Hi everyone. I tell you i'm working with a "TLC5973 LED Driver Single-Wire". But aparently the signal that i'm sending is not recognized, but i don't know why, because it's the same as figure in the datasheet. Here i send a pic of the signal generated.

Sorry my english!

Thx

PD: The information sent in this image is 0x3AA, 0xFFF, 0xFFF, 0xFFF. 

  • 0
    TI__Intellectual 955 points

     Hello Pignatta,

     It seems that your 2'nd rising edge for logic '1' data input is input after 50% of tCYCLE.

     When you want to input logic data '1', you need to input SDI 2'nd rising edge must be input before 50% of tCYCLE.

     Please try to input SDI with the timing above.

     Best regards,

     Kazuya Nakai.