Chip and system clock adaptive spread spectrum device based on chip workload detection
A technology of workload and system clock, applied in automatic control of power, electrical components, generation/distribution of signals, etc., can solve the problem that the internal load of the chip has no correlation, and cannot actively improve the execution efficiency and security of the system. Achieve the effects of improving execution efficiency and safety, reducing the probability of timing failure, and reducing EMI radiation
Pending Publication Date: 2022-03-25
合肥智芯半导体有限公司
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Problems solved by technology
However, the commonly used spread spectrum circuit has no correlation with the internal load of the chip, and cannot actively improve the execution efficiency and security of the system.
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[0025] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.
[0026] Reference is attached below Figure 1-5 The chip and the system clock adaptive spread spectrum device based on chip workload detection are described in the embodiments of the present invention.
[0027] figure 1 It is a schematic structural diagram of a system clock adaptive spread spectrum device based on chip workload detection according to an embodiment of the present invention. like figure 1 As shown, the system clock adaptive spread spectrum device 100 based on chip worklo...
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The invention discloses a chip and a system clock self-adaptive spread spectrum device based on chip working load detection, and the device comprises a main power supply voltage detection circuit which comprises a power supply generator and a voltage detection sub-circuit, the input end of the power supply generator is used for being connected with an external power supply, and is used for generating a main power supply; the input end of the voltage detection sub-circuit is connected with the output end of the power generator, and the voltage detection sub-circuit is used for performing periodic detection to obtain a power voltage value; the input end of the working load judgment circuit is connected with the output end of the voltage detection sub-circuit, and the working load judgment circuit is used for outputting a dominant frequency adjustment control signal according to a comparison result of the power supply voltage value and a preset load threshold value; and the system clock adjusting circuit is connected with the output end of the working load judging circuit and is used for adjusting the system clock frequency so as to slow down the voltage fluctuation of the main power supply. Therefore, according to the device, the execution efficiency and the safety of the chip can be improved, the probability of time sequence failure of the chip at low voltage is reduced, and EMI (Electro-Magnetic Interference) radiation generated by the chip is reduced.
Description
technical field [0001] The invention relates to the technical field of chips, in particular to a system clock adaptive spread spectrum device based on chip workload detection and a chip. Background technique [0002] The workload inside the chip refers to the degree of power consumption of the chip in different working scenarios. Under normal circumstances, the internal load generated by the normal operation of the chip is proportional to the main frequency of the system. The higher the main frequency of the system, the greater the workload. At the same time, the nature and number of all active modules in a chip also affects the size of the workload. Under a certain driving ability, the main power supply voltage of the chip will fluctuate with the change of the workload, and the fluctuation of the main power supply usually has a great influence on the working state of the high frequency circuit. In general chip applications, the radiation of the signal is mainly due to the...
Claims
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Login to View More IPC IPC(8): G06F1/08H03L7/18
CPCG06F1/08H03L7/18
Inventor 何学文李宇昂杨帆
Owner 合肥智芯半导体有限公司