Title :
Crosstalk effect minimization for encoded busses
Author :
Di Silvio, L. ; Rossi, D. ; Metra, C.
Author_Institution :
Bologna Univ., Italy
Abstract :
In this paper we present a technique which allows to reduce the crosstalk-induced delay within busses implementing an error detecting/correcting code. This technique is based on the observation that the maximum delay on an encoded bus is usually due to the check bits that are added to provide the desired error detection/ tolerance ability. These bits, in fact, are computed from the bus information bits by an ad hoc encoder, which adds an extra delay to the crosstalk-induced bus delay. We will show that, by proper placement of the lines carrying the information with respect to those carrying the check bits, it is possible to reduce the effective coupling capacitance due to the Miller effect among adjacent lines. This allows a reduction of propagation delay which, depending on the implemented code, can overcome the 20% with respect to the conventional placement of encoded busses.
Keywords :
crosstalk; delays; error correction codes; error detection codes; logic testing; Miller effect; ad hoc encoder; bus encoding circuit; bus information bits; bus lines delay; capacitive coupling; check bits; crosstalk effect minimization; crosstalk-induced bus delay; crosstalk-induced delay; effective coupling capacitance; encoded busses; error correcting code; error detecting code; error detection ability; error tolerance ability; maximum delay; propagation delay; Added delay; Capacitance; Crosstalk; Delay effects; Encoding; Error correction codes; Propagation delay; Testing; Uncertainty; Wires;
Conference_Titel :
On-Line Testing Symposium, 2003. IOLTS 2003. 9th IEEE
Print_ISBN :
0-7695-1968-7
DOI :
10.1109/OLT.2003.1214401
