Interface wake-up synchronization method, interface device and computer-readable medium

Abstract

An interface wake-up synchronization method, an interface device, and a computer readable medium are provided. The interface wake-up synchronization method comprises the following steps of sending wake-up indication information to a target interface; receiving wake-up indication response information sent by the target interface, and generating wake-up confirmation information based on the wake-upindication response information; sending the wake-up confirmation information to the target interface; after delaying the preset first time period, entering the wake-up state. With the above scheme, the source interface and the destination interface can enter the wake-up state synchronously, thereby avoiding the state out-of-step caused by one party entering the wake-up state while the other partysleeps.

Description

technical field [0001] The embodiments of the present invention relate to the communication field, and in particular to an interface wake-up synchronization method, an interface device, and a computer-readable medium. Background technique [0002] In an existing communication interface, such as a Universal Asynchronous Receiver / Transmitter (UART) interface, in order to save energy, when the interface is in a low activity state, it can work in a sleep / power saving mode (Sleep / Doze Mode). After that, how to effectively and quickly wake up the interface in Sleep / Doze Mode becomes a very important issue. [0003] In existing product implementations, there are two solutions: soft wake-up and hard wake-up. For the soft wake-up scheme, the source interface sends a specific synchronization code word (Magic Word) to the target interface to wake up the target interface. The biggest problem with this scheme is that the synchronization between the source interface and the target interf...

AI Technical Summary

Problems solved by technology

For the soft wake-up scheme, the source interface sends a specific synchronization code word (Magic Word) to the target interface to wake up the target interface. The biggest problem with this scheme is that the synchronization between the source interface and the target interface cannot be guaranteed.

For example, after the source interface sends a synchronization codeword to the target interface, the source interface enters the wake-up state, and the target interface may be in sleep mode because the channel becomes poor and cannot receive the synchronization codeword, which causes the state of the source interface and the target interface to be out of sync.

For the hard wake-up scheme, in addition to the synchronization problem between the source interface and the target interface, additional pins (pins) overhead are required, resulting in a further increase in cost

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