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On-line monitoring unit and monitoring window adaptive adjustment system for ultra-wide voltage

A technology of monitoring window and monitoring unit, which is applied in the direction of control/regulation system, adjusting electrical variables, instruments, etc., can solve the problems that the monitoring unit cannot complete the monitoring task, the monitoring window cannot cover the deviation, etc., and achieve the timing margin and the minimum The effect of optimizing and reducing the timing margin

Active Publication Date: 2016-09-21
南京集成电路设计服务产业创新中心有限公司
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Problems solved by technology

[0005] When adjusting to an ultra-wide voltage range, because the delay change of the circuit is more affected by various deviations at low voltages, the ordinary monitoring unit usually has a fixed structure, and its monitoring window cannot cover the deviations at low voltages. , so that the monitoring unit cannot complete the established monitoring tasks

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  • On-line monitoring unit and monitoring window adaptive adjustment system for ultra-wide voltage
  • On-line monitoring unit and monitoring window adaptive adjustment system for ultra-wide voltage
  • On-line monitoring unit and monitoring window adaptive adjustment system for ultra-wide voltage

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Embodiment Construction

[0026] The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0027] like figure 1 As shown, the online monitoring unit with configurable monitoring window size working under ultra-wide voltage mainly includes: a main flip-flop, a shadow latch, an XOR gate and four parts of a configurable delay chain. When the input signal arrives late and is close to the rising edge of the next clock cycle, the timing of the circuit is relatively tight. At the same time, the shadow latch is delayed for a period of time Tw due to the configurable delay chain, so the output is different from the main The signal of the flip-flop, the XOR gate will output a high level by comparing the output results of the flip-flop and the shadow latch. At this time, the error prediction signal output by the online monitoring unit is a high level.

[00...

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Abstract

The invention discloses an ultra-wide voltage-oriented online monitoring unit and its monitoring window adaptive adjustment system. Based on the traditional predictive online timing monitoring unit, an online monitoring unit with an adjustable monitoring window is designed to adapt to the ultra-wide voltage Lower circuit delays vary over a wider range. In addition, a monitoring window adjustment system with adaptive adjustment function is also disclosed, which can adaptively adjust the size of the window value according to the PVT (Process-Voltage-Temperature) state of the monitored circuit in an ultra-wide voltage range, Therefore, the timing margin reserved in the traditional design can be fully reduced, and the power consumption of the circuit can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of integrated circuit design low power consumption, in particular to the technical field of self-adaptive voltage frequency adjustment based on online timing monitoring. Background technique [0002] With the gradual shrinking of the integrated circuit (IC) process size, the power consumption per unit area of ​​the chip is also gradually increasing, and power consumption has become an important factor that must be considered in addition to performance and area in IC design. In recent years, the design of wide-voltage circuits (working range from near-threshold to normal voltage) has been proposed, which can dynamically adjust the voltage in a wide range according to actual performance requirements to maximize power savings. [0003] On the other hand, as the process becomes more and more advanced, deviations such as process, voltage, and temperature (Process-Voltage-Temperature, PVT) have an increasing impac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/46
Inventor 单伟伟吴建兵戴文韬
Owner 南京集成电路设计服务产业创新中心有限公司
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