TLC5944/about Status Information Data(SID) and Internal Pre-Charge FET

Tsukui Yusuke

Guru 21930 points

Other Parts Discussed in Thread: TLC5944

Hi,

Could you tell me about TLC5944 function of SID and Internal Pre-Charge FET.
Are these two functions available at the time of GS mode?
Is it a function not to be usable at the time of DC mode?

Best Regards,
Yusuke/Japan Disty

over 8 years ago

0 Feifei Shen over 8 years ago

TI__Expert 3275 points

Hi Yusuke,
LOD function and Pre-charge function are not related with GS/DC mode.
So it can used in both two modes.

LOD will work after the 33GSCLK after falling edge of BLANK.
Pre-charge will work after BLANK goes high.

Pls check datasheet 22~23.

Best regards,
Feifei

0 Tsukui Yusuke over 8 years ago in reply to Feifei Shen

Guru 21930 points

Feifei-san,

Thank you for your information.
I attach the usage document of the customer.Could you confirm it?
In this case I remain GS clock =Low.
Is LOD unusable in this condition?

1106.TLC5944.pdf

Best Regards,
Yusuke/Japan Disty

0 Tsukui Yusuke over 8 years ago in reply to Tsukui Yusuke

Guru 21930 points

Hi,

Can I get the information ?
If you need more information or if I should clarify my comment ,
please let me know.

Best Regards,
Yusuke/Japan Disty

0 Feifei Shen over 8 years ago in reply to Tsukui Yusuke

TI__Expert 3275 points

Hi Yusuke,

In your timing chat, you only send one pulse of GSCLK, and remain low.
LOD should not working, internal LOD detection will only work after 33GCLK.
Pls kindly check Fig 31 in the datasheet.

Best regards,
Feifei

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TLC5944/about Status Information Data(SID) and Internal Pre-Charge FET