TLC5971: TLC5971 for local dimming question

James Su5

Expert 1340 points

Part Number: TLC5971

Reference below picture,

MCU can control each bit action through I2C Interface ?

Like: N_OUTR0 ON (N+1_OUTR0 OFF) or N+1_OUTB3 ON (N_OUTB3 OFF)

over 6 years ago

0 Shawn Ding over 6 years ago

TI__Expert 3190 points

Hi James,

Yes, for TLC5971 the latch signal is produced by the internal circuit when the data meets two requirements: 1) 224bits, first 6bit equal to 25h 2) blank 8x clk time after sending a frame data.

Page 28, gives a example for cascaded devices time flow, which depict in detail.

After sending 224bit *N device, the device will internally produce a LATCH signal. and all device will carry the data from common shift registers to the relevant registers.

Regards!

Shawn.

0 Shawn Ding over 6 years ago in reply to Shawn Ding

TI__Expert 3190 points

Hi James,

I will close this thread, if you have any further question, please let us know.

thanks!

Regards,

Shawn

0 James Su5 over 6 years ago in reply to Shawn Ding

Expert 1340 points

Hi Shawn

Thanks !

B/R James

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TLC5971: TLC5971 for local dimming question