Indicating
Logic
20/4/2014
CE-653 - Indicating Logic
3
}Indicating logic is able
to generate a data-dependent
Completion Detection (CD/DONE) signal
Completion Detection (CD/DONE) signal
}Indicates that valid data have arrived at the
C.L. cloud’s outputs
C.L. cloud’s outputs
}What was there before valid data arrived?
}difficult separating successive data values (Validn, Validn+1, …)
}Intermediate value between valid data used (NULL/Spacer)
}Indicating circuit operation is two-phase: NULL, DATA, NULL, DATA, …
Combinational
Logic Cloud
Logic Cloud
PIs
POs
DONE/CD Signal