This embodiment enables {HEAD ~ calibration} on the FlexIO while keeping the content of {TAIL ~ the system memory} and values of registers, by halting the Cell operation when calibration is needed 
This embodiment enables { HEAD ~ calibration } on the FlexIO while keeping the content of { TAIL ~ the system memory } and values of registers , by halting the Cell operation when calibration is needed
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH