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How to set SDHC clock to 50MHz?

Question asked by naftalir on Nov 19, 2012
Latest reply on Nov 20, 2012 by naftalir

Hi,

 

I've tested the SDCLK and noticed it works default in 20MHz clock, so i've managed to chage it to 40MHz but not to 50MHz.

My code looks like that:

 

        /* Set SDCLK to 40Mhz*/

        esdhc_ptr->SYSCTL &= 0xFFFFFFF7; //Disable the SD Clock

        esdhc_ptr->SYSCTL &= 0xFFFF00FF; //Setting the Prescaler to 0

        esdhc_ptr->SYSCTL |= 0x00000020; //Setting the Divisor to 3 

        esdhc_ptr->SYSCTL |= 0x00000008; //Enable the SD Clock

        esdhc_ptr->SYSCTL |= 0x00000004; //Remain the SDHC clock always enabled 

 

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