Changing the 24 MHz crystal on the PSOC5LP Dev Kit Board

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Anonymous
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 As the subject states, I am interested in changing the 24 MHz crystal on my PSoC5LP development board to and 18.5 MHz crystal.  Will this cause me any problems or can I just swap it and go?

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ETRO_SSN583
Level 9
Level 9
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USB needs 48 Mhz on PSOC, why 24 Mhz is used X 2.

   

 

   

If you need another frequency consider PSOC 4 which has fractional

   

clock dividers, or using verilog to generate a fractional divider to gen

   

the 18.5 Mhz. Note the downside is clock jitter in these techniques.

   

As well as absolute accuracy due to finite resolution of the technique.

   

 

   

    

   

          

   

http://www.cypress.com/?id=2401     Discussion half way down the page

   

 

   

Google "verilog fractional clock dividers", you will get a lot of hits.

   

 

   

 

   

Regards, Dana.

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