PLLD clock multiplier - Raspberry Pi Forums

was wondering if shed light on how plld clock generated in pi?

specifically, multiplier used generate 500mhz plld clock 19.2mhz crystal reference? wsprrypi sourcecode assumes generated using 26x multiplier meaning plld clock 499.2 mhz , not 500mhz... correct?

james

voltron6000 wrote:was wondering if shed light on how plld clock generated in pi?

specifically, multiplier used generate 500mhz plld clock 19.2mhz crystal reference? wsprrypi sourcecode assumes generated using 26x multiplier meaning plld clock 499.2 mhz , not 500mhz... correct?

james

interested, measured both 19.2mhz crystal output , 500mhz pll output precision frequency counter. ratio between 2 frequencies 26.0416667 meaning plld multiplier in wsprrypi source code incorrect. still don't know actual ratio programmed hardware divider though...

james

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