RA6T2 IIC clock

Hi all,

I'm using the I2C module of RA6T2, and I was wondering that how to set the IICCLK?

For example, if I used the stander mode I2C (100kbps), what is the minimum request of IICCLK?

I had checked the spec, and the only description of limitation about IICCLK is

IICCLK/2 <= PCLKA <= IICCLK

but how can I calculate the minimum value for the specific transfer rate?

Thanks.

Cooper.