Welcher Takt bei I2C?

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Hallo,
ich hab das gefunden:
http://playground.arduino.cc/Code/ATMELTWI#line7

So our clock (SCL) frequency will be SCL = CPU clock / (16 + 2(TWBR) ? (PrescalerValue)). Our clock is 16 MHz, TWBR is 72, Prescaler Value is 1, so we have:

SCL = 16,000,000 / 16 + 144 * 1
SCL = 16,000,000 / 160
SCL = 100,000

This is a rather pedestrian I2C frequency of 100 Khz, which is what the TWI_FREQ was defined as.

Also rund 100KHz

Gruß Reinhard