TMS320F28069M: how to set 100kbps for I2C module in motorware

Dear TI members,

I'm trying to communicate between F28069 and CC2650 via I2C

I have initialized I2C module based on example of controlsuite as follows.

void I2C_setup(I2C_Handle i2cHandle)
{
   
    i2cHandle->I2CPSC.all = 6;              // Prescaler - need 7~12 MHz on module clock
    i2cHandle->I2CCLKL = 10;                // Note : must be non zero
    i2cHandle->I2CCLKH = 5;                 // Note : must be non zero

    i2cHandle->I2CIER.all = 0x00;          // no interrupt

    i2cHandle->I2CMDR.all = 0x0020;

    i2cHandle->I2CFFTX.all = 0x6000;        // Enable FIFO mode and TXFIFO
    i2cHandle->I2CFFRX.all = 0x2040;        // Enable RXFIFO, clear RXFFINT
}

Communication speed seems to be around 500kbps, as I have checked with oscilloscope.

I'd like to reduce speed to 100kbps, how to change my setting ?

System clock is 90MHz.

Best Regards,

Hae Ryong