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USB PLL configurator


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I made a simple calculator with XT2 as input and USBPLLDIVB as output, for configuring USB PLL. Some calculated values are in Table 38-2 "Register Settings to Generate 48 MHz Using Common Clock Input Frequencies" of slau208 "MSP430x5xx MSP430x6xx Family User's Guide".

 

USB spec defines the tolerance as +/- 0.25% (2500 ppm) for full-speed bus.

 

post-26480-0-87532100-1369679103_thumb.gif

 

MSP430USBCalc.rar

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