Replace 24 Mhz Crystal with a 24 Mhz XO to get rid of MLCCs.

[JoBa_2147096]

Ref:  CYW20719 Data Sheet, Page 9, Recommended 24 Mhz Oscillator Configuration.

NOTE: The 24 Mhz crystal requires two external load capacitors.

The MLCCs are hard to source right now.

I want to replace the 24 Mhz crystal with an crystal oscillator with a LVCMOS output.

A. What is the logic level that I can use to drive the XIN? Is this a 1.5V, 1.8V, 2.5V or 3.3V?

B. What is the equivalent  circuit capacitance?  All clocks have a drive level spec, such as 15 pF, 30 pF, etc.  If using

a clock, what is the drive level for the input?

C.  How do I configure the clock output? Does it drive XIN or XOUT?

D.  What do I do with the unused pin? XIN or XOUT depending on question C?

MLCCs are extremely difficult to source.  I do not care about the added cost of an XO vs Crystal since I can not get capacitors

anywyas.  I just need the 24 Mhz reference.

Thanks

[Anonymous · Accepted solution]

We have not tested using a LVCMOS output crystal oscillator with our chipsets. I am afraid we cannot recommend using it.