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Online monitoring unit oriented to ultrawide voltage and monitoring window self-adaptive adjusting system

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 window cannot cover the deviation, the monitoring unit cannot complete the monitoring task, etc., and realize the timing margin and the minimum , the effect of reducing the power consumption of the circuit

Active Publication Date: 2015-12-16
南京集成电路设计服务产业创新中心有限公司
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AI Technical Summary

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

Method used

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  • Online monitoring unit oriented to ultrawide voltage and monitoring window self-adaptive adjusting system
  • Online monitoring unit oriented to ultrawide voltage and monitoring window self-adaptive adjusting system
  • Online monitoring unit oriented to ultrawide voltage and monitoring window self-adaptive adjusting system

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Embodiment Construction

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

[0027] Such as figure 1 As shown, the online monitoring unit with a configurable monitoring window size that works under ultra-wide voltage mainly includes: a main flip-flop, a shadow latch, an exclusive OR gate, and a configurable delay chain. When the input signal arrives late, close to the rising edge of the next clock cycle, the timing of the circuit is 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, and the error prediction signal output by the online monitoring unit is high.

[0028] Since the del...

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Abstract

The invention discloses an online monitoring unit oriented to ultrawide voltage and a monitoring window self-adaptive adjusting system. Based on a traditional prediction type online time sequence monitoring unit, the online monitoring unit with an adjustable monitoring window is designed so as to adapt to the change of circuit delay at ultrawide voltage within a larger range. The invention further discloses the adjusting system, with the self-adaptive adjusting function, of the monitoring window. The window value can be adjusted in a self-adaptive mode within the ultrawide voltage range according to the monitored PVT (Process-Voltage-Temperature) state of a circuit, and therefore the reserved time sequence margin in traditional design can be fully reduced, and power consumption of the circuit is 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 Applications(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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