LMK04828: One Shot Pulse Output

Yoel Ben-Naim

Part Number: LMK04828

I am trying to create a pulse (one pulse) at multiple SDCLK outputs.

The pulse needs to come out at a sync event which is originated at the CLKin0.

So far I've managed to do create a pulsed output only when working with the SYNC pin or PULSER, but I couldn't figure out how to trigger the pulse with CLKin0.

I followed the instructions over the datasheet as written below, but I didn't get anything at the output.

Is it possible to output a pulse using the CLKin0 as sync/trigger?

10 months ago

0 William Pfennigwerth 10 months ago

TI__Expert 8231 points

Yoel,

I will look into this in the lab and try to create a config for you by the end of the week.

Regards,

Will

0 William Pfennigwerth 10 months ago in reply to William Pfennigwerth

TI__Expert 8231 points

Yoel,

Sorry for the delay, I will get back to you by Tuesday.

Regards,

Will

0 William Pfennigwerth 10 months ago in reply to William Pfennigwerth

TI__Expert 8231 points

Yoel,

CLKin0 can not be used to trigger the pulser as it is not connected to the pulser circuitry.

The datasheet is not clear that CLKin0 is not wired the same as the SYNC pin. Given this, you have two options:

Use the SYNC Pin instead of the CLKin0 Pins.
Use CLKin0 to send a pulse of your desired width and use the re clocking functionality to have the CLKin0 pulse be in sync with the SYSREF clock.

Regards,

Will

0 Yoel Ben-Naim 10 months ago in reply to William Pfennigwerth

Prodigy 10 points

Thank you will

Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

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LMK04828: One Shot Pulse Output