Indicating Logic –
Strong vs. Weak Indication
20/4/2014
CE-653 - Indicating Logic
5
}Dual-rail encoding allows us to detect DATA arrival at
}Inputs or Outputs
}Definition[Strongly/Weakly Indicating Logic]
}A circuit is strongly-indicating iff it waits for all of
its inputs to arrive before it computes and produces valid
outputs, as well as for all of its inputs to become NULL before
it produces NULL outputs
Combinational
Logic Cloud
Logic Cloud
PIs
POs
DONE/CD Signal