A Methodology for Design of Unbuffered Router Microarchitecture for S-Mesh NoC

Líu, Hao; Cao, Feifei; Li, Dongsheng; Zou, Xuecheng; Zhang, Zhigang

doi:10.1007/978-3-642-15672-4_37

Cited by 1 publication

(2 citation statements)

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“…Since DVFS with in-situ timing-error monitoring is a very effective method for designing a dependable low-power circuit, many implementations of this method have been reported. [9][10][11][12] The error tolerance of these implementations is mainly based on duplicated logic circuits and comparisons of results obtained by using them. An error is considered to have occurred when two results are different.…”

Section: In-situ Timing-error Monitoringmentioning

confidence: 99%

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Delay-Compensation Flip-Flop with In-situ Error Monitoring for Low-Power and Timing-Error-Tolerant Circuit Design

Hirose¹,

Manzawa

Goshima³

et al. 2008

jjap

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With the continuous downscaling of transistors, process variation and power consumption have become major issues. Dynamic voltage and frequency scaling (DVFS) with in-situ timing-error monitoring is an effective method that addresses both issues. However, the conventional implementations of this method, which are mainly based on duplicated circuits, have some implementation-specific constraints. In this paper, the authors propose a delay-compensation flip-flop (DCFF) that does not use duplicated circuit components. It monitors timing errors by directly checking the transient timings of signals. The DCFF adjusts the rising-edge timings of the clock to avoid timing errors and compensates the timing margins between successive stages. Simulations using simulation program with integrated circuit emphasis (SPICE) indicated that the DCFF can operate in a wider supply voltage range than the conventional implementation of DVFS with in-situ timing-error monitoring. A 2.5 ×2.5 mm2 test chip was designed by using a 0.18 µm 5-metal process. An essential circuit component of the DCFF was implemented using semi-custom gate-array chips and its operation was verified. Although more detailed and varied simulations and actual measurements are required as future work, DCFFs can be effectively applied to process-variation tolerance and low-power computation and to optimize the design margin and resolve the false-path problem.

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Section: In-situ Timing-error Monitoringmentioning

confidence: 99%

“…Some implementations comprise duplicated computational logic; the hardware overheads of the duplicated logic circuits are considerable. Such methods can include the employment of approximation circuits, 9,13) noise-tolerant algorithms, 14) or the TEAtime method, 15) etc.…”

Section: In-situ Timing-error Monitoringmentioning

confidence: 99%