C6713B - Can't access EMIF

Hi,

I'm working with a TMS320C6713B and I need to write data to the IOSel base, addresses 0x90300000 to 0x9031FFFF. Even after initializing the PLL and EMIF registers, I can't access this memory section

Here's my code
 

    #define IOSEL_BASE 0x90300000

    unsigned int U32_addressBusData = 0x0;
    unsigned int* U32_outaddress = 0x0;
    *U32_outaddress=0x1;

    for(U32_addressBusData =0; U32_addressBusData <65535; U32_addressBusData++)
    {
        U32_outaddress = (unsigned int*)(U32_addressBusData*4+IOSEL_BASE); //pointer address
        *U32_outaddress = U32_addressBusData;                                                            //write value to address
        if(U32_addressBusData>65500)
        {U32_addressBusData=0;}
    }

When loading my code on the debugger, I can see on the locals that my pointer updates the value but when checking the pin volt levels, nothing happens...

Any help would be appreciated.

Thank you in advance

Thibault