Verification device and operation method of multi-voltage domain digital circuit

Abstract

The present invention relates to the digital circuit verification technology and discloses a verification device of a multiple-voltage domain digital circuit and an operation method. The verification device comprises a software configuration controller, a bus driver, a power supply state simulator and an assertion monitor. The software configuration controller controls the bus driver to configure a circuit to be measured through a read test file and controls the power supply state simulator to provide and switch a power supply working mode. The assertion monitor monitors the circuit to be measured. The human intervention is not needed, while manpower is saved, the accuracy is improved, the different digital circuit modules of the same multiple-voltage system can be verified only through changing connected signals without the constraint of the design schedules of other peripheral modules, the reusability is good, and the efficiency is high.

Description

Technical field [0001] The invention relates to digital circuit verification technology, in particular to a verification device for a multi-voltage domain digital circuit and an operating method thereof. Background technique [0002] When verifying digital circuits, sometimes a special type of digital circuit is encountered that works in multiple voltage domains, such as the real-time clock digital circuit module in a video player chip (usually its function is to manage video The player's clock and alarm function). When the video player is turned on, this module runs under the working voltage. When there is no operation on the player for a long time, in order to save power, the system will switch to the standby mode, and the real-time clock module is running under the standby voltage at this time. When the player is shut down, this module also runs under the shutdown state voltage to ensure that the clock can continue to count when shutting down. [0003] For the functional veri...

AI Technical Summary

Problems solved by technology

If the module to be tested is the bottleneck of the entire chip design, then its verification progress will affect the progress of the entire chip verification completion

[0007] 2. The efficiency is relatively low

If the test goes wrong, it is not convenient to debug

[0008] 3. Low degree of automated verification

The interface signals of the module are directly observed through external devices. This kind of verification method requires human intervention in each step, which virtually increases the possible errors caused by humans.

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