1 Reply Latest reply on Mar 17, 2013 10:07 PM by jasonrc

    STM32 clock / PLL frequency setup wrong?

      [WICED-SDK-2.2.1]

       

       

      The BCM43362WCD4 module has a 26MHz external crystal.

       

      The STM32F205xx supports up to 120MHz clock frequency.

       

       

      The default PLL setting for WICED SDK looks incorrect.

       

      RCC->CFGR: 0x0000940a

       

      RCC->PLLCFGR: 0x05403c1a

       

      In this case, PLL48CK will be 49.92[MHz] and SYSCLK will be 124.8[MHz].

       

      Is my understanding correct?

       

       

      If yes, please check whether PLLM can be changed from 25 to 26?