Max-Testable Class of Sequential Circuits having Combinational Test Generation Complexity

Low Power and High Speed Sequential Circuits Test Architecture

Recent Patents on Computer Science ◽

10.2174/2213275912666191107102512 ◽

2019 ◽

Vol 12 ◽

Author(s):

Ahmed K. Jameil ◽

Yasir Amer Abbas ◽

Saad Al-Azawi

Keyword(s):

Power Consumption ◽

Low Power ◽

Test Generation ◽

High Speed ◽

Fir Filter ◽

Sequential Circuits ◽

Fir Filters ◽

Design Verification ◽

Sequential Circuit ◽

Generation Algorithm

Background: The designed circuits are tested for faults detection in fabrication to determine which devices are defective. The design verification is performed to ensure that the circuit performs the required functions after manufacturing. Design verification is regarded as a test form in both sequential and combinational circuits. The analysis of sequential circuits test is more difficult than in the combinational circuit test. However, algorithms can be used to test any type of sequential circuit regardless of its composition. An important sequential circuit is the finite impulse response (FIR) filters that are widely used in digital signal processing applications. Objective: This paper presented a new design under test (DUT) algorithm for 4-and 8-tap FIR filters. Also, the FIR filter and the proposed DUT algorithm is implemented using field programmable gate arrays (FPGA). Method: The proposed test generation algorithm is implemented in VHDL using Xilinx ISE V14.5 design suite and verified by simulation. The test generation algorithm used FIR filtering redundant faults to obtain a set of target faults for DUT. The fault simulation is used in DUT to assess the benefit of test pattern in fault coverage. Results: The proposed technique provides average reductions of 20 % and 38.8 % in time delay with 57.39 % and 75 % reductions in power consumption and 28.89 % and 28.89 % slices reductions for 4- and 8-tap FIR filter, respectively compared to similar techniques. Conclusions: The results of implementation proved that a high speed and low power consumption design can be achieved. Further, the speed of the proposed architecture is faster than that of existing techniques.

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Temporal Logic Based Hierarchical Test Generation for Sequential VLSI Circuits

VLSI Design ◽

10.1155/1994/94514 ◽

1994 ◽

Vol 2 (1) ◽

pp. 69-80 ◽

Cited By ~ 2

Author(s):

Anand V. Hudli ◽

Raghu V. Hudli

Keyword(s):

Temporal Logic ◽

Test Generation ◽

Digital Circuits ◽

Difficult Problem ◽

Sequential Circuits ◽

Vlsi Circuits ◽

Temporal Behavior ◽

Generation Algorithm

Test generation for sequential VLSI circuits has remained a difficult problem to solve. The difficulty arises because of reasoning about temporal behavior of sequential circuits. We use temporal logic to model digital circuits. Temporal Logic can model circuits hierarchically. A set of heuristics is given to aid during test generation. A hierarchical test generation algorithm is proposed.

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