Verification method and device based on IEEE 1588 protocol

Abstract

The invention provides a verification method based on an IEEE 1588 protocol. The verification method comprises steps of: connecting a clock alarm output end and an assisting trigger input end of a to-be-tested module, wherein the to-be-tested module comprises a master device and a slave device; outputting an alarm clock signal from the clock alarm output end; synchronizing time of the master device and the slave device in advance; configuring alarm time, and when the alarm time arrives, pulling up the alarm clock signal; separately acquiring a timestamp of a system clock of the master device and a timestamp of a system clock of the slave device through an assisting trigger operation; and comparing the timestamp of the system clock of the master device with the timestamp of the system clockof the slave device so as to obtain a final verification result.

Description

technical field [0001] The invention belongs to the technical field of integrated circuit design, and relates to a verification method and device based on the IEEE 1588 protocol. Background technique [0002] The 1588 protocol uses technologies such as network media communication, master device timing, slave computing, and distributed objects to achieve the highest sub-microsecond precision clock synchronization operation. When verifying the time synchronization of the master and slave devices, since it is difficult to use software to locate the time point of the time synchronization state, the verification result is difficult to obtain intuitively. [0003] Traditional time synchronization verification generally relies on the code recognition source to convert the system clock output by the device, and directly converts the 48bits / 60bits system clock output by the device into the year, month, day, hour, minute, and second, and then compares the clocks. Or, use PPS (pulse-p...

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Problems solved by technology

Or, use PPS (pulse-per-second), external auxiliary trigger and oscilloscope to verify the time synchronization system clock. Based on this, it can be seen that the first verification method, if there is no professional code recognition source equipment, it is difficult to verify the time synchronization is established. ; The second method is difficult to control the clock node through software to achieve the verification goal

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