Title :
The five-phase twisted-ring counter circuit
Author :
Poriazis, Serafim
Author_Institution :
R&D Dept., Phasetronic Labs., Athens, Greece
Abstract :
The behavior of the Five-Phase Twisted-Ring Counter (5P-TRC) circuit is analyzed. The circuit produces five individual phased clock signals that exercise a phase difference equal to the half period of the clock. A tree-like structure is built by applying the phased outputs of the circuit to the clock inputs of five replicas of the circuit in order to extend its behavior. The EXOR5 gate is used to define a mirroring structure attached to the 5P-TRC structure such that a primitive/expanded counter configuration is formed. A fundamental concept being described by the transposition mechanism of the EXOR operator is incorporated to the above configuration such that the phase association of interconnecting signals is preserved.
Keywords :
CMOS logic circuits; VLSI; built-in self test; clocks; counting circuits; integrated circuit testing; oscillators; BIST technique; CMOS implementation; EXOR5 gate; SPICE; VLSI testing; five-phase twisted-ring counter circuit; interconnecting signals; mirroring structure; phase association; phase difference; phased clock signals; primitive-expanded counter configuration; ring oscillator; transposition mechanism; tree-like structure; Automatic testing; Built-in self-test; Circuit testing; Clocks; Counting circuits; Frequency; Laboratories; Logic testing; Ring oscillators; Very large scale integration;
Conference_Titel :
Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003 10th IEEE International Conference on
Print_ISBN :
0-7803-8163-7
DOI :
10.1109/ICECS.2003.1301716
