XIO2001: XIO2001 - Trace Length Between CLKOUT6 and CLK Pin

Diego Machado

Part Number: XIO2001

Hi, I'm trying to understand what is the correct lenght I shall define for the clock feedback trace that connects CLKOUT6 to CLK pin.

In my design, I have the XIO2001. The CLKOUT0 signal is routed to a clock buffer, which has 8 clock outputs.

These 8 clocks are then routed to a connector, which is connected to a backplane that is routed to 8 different slots.

In this case, with what length should I route the feedback trace?

Thanks!

4 months ago

0 Gregory Kobyakov 3 months ago

TI__Genius 14040 points

Hi Diego,

I will check on this internally and will get back to you as soon as possible.

Best regards,

Greg

0 Diego Machado 3 months ago in reply to Gregory Kobyakov

Prodigy 40 points

Hi Gregory, thanks for your help. Is there any update on that issue? Thanks!

0 Gregory Kobyakov 3 months ago in reply to Diego Machado

TI__Genius 14040 points

Hi Diego,

For this application, the feedback trace propagation delay should be made longer than that of the clock buffer. The length should be routed according to this, dependent on the system.

Best regards,

Greg

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XIO2001: XIO2001 - Trace Length Between CLKOUT6 and CLK Pin