LMK04806: LMK04806 Multiple PLL?

HENRY JUNG

Expert 2030 points

Part Number: LMK04806

Dears.

We use four LMK04806s.

I want to use multiple LMK04806s to match the PLL.

We have to synchronize from the first LMK04806 to the fourth LMK04806.

How can I get the clock synchronization of the first LMK and the fourth LMK04806?

Please tell me the solution?

thank you

over 8 years ago

0 Simon Damphousse over 8 years ago

TI__Expert 5370 points

Dear Henry,

Thank you for your interest in LMK04806. This is a dual loop PLL with many possible configurations. You can synchroronize the device using the zero-delay-mode described in section 8.3.10. You may also check section 8.4.1 to see the possible operating mdoes.

Check figure 16 and 18 for a block diagram of the zero-delay-mode for signle and dual loop configurations. Bringing back the output to the reference insure aligned phase as long long as N/R is an integer.

I hope this helps,

Regards, simon.

0 HENRY JUNG over 8 years ago in reply to Simon Damphousse

Expert 2030 points

Dear. Simon Damphousse.

I understood this.

When Clkout of the first LMK04806 is input to FBCLKIN of the second LMK04806, whether the first LMK04806 and the second LMK04806 are synchronized.

How many LMK04806s can be connected and synchronized?

Thank you.

Clock & timing

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LMK04806: LMK04806 Multiple PLL?