Aaro Koskinen said the following on 02/24/2009 11:09 AM: > ext Nishanth Menon wrote: >> Oops.. copy-paste typo.. :( >> tLow = (scll+3) * iclk >> tHigh = (sclh+9) * iclk >> Vs: >> TRM: >> tHigh = ( sclh +5 )*iclk period >> tLow = ( scll +7 )*iclk period >> >> But my question is this: why are we trying to a different equation >> here compared to the equation in the TRM? > > The problem with TRM (the table 18-13 you referred earlier) is that it > assumes 50% duty cycle while the correct one is more like 33%. This is > corrected by Eero's patch: Gentle query - could you point me to the place where the 33% duty cycle is mentioned in i2c spec? spec mentions minimum timing, but I don't seem to find a constraint on duty cycle requirement.. :( Regards, Nishanth Menon -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
