CC logic control chip low power consumption connection detection method and structure

Abstract

The invention discloses a CC logic control chip low power consumption connection detection method and structure. The method comprises a step of arranging a second connection detection circuit in a CC logic control chip to carry out preliminary connection detection, and preliminarily judging whether external TYPE-C equipment is inserted into the TYPE-C interface of the CC logic control chip, a step of starting a first connection detection circuit by the CC logic control chip to carry out normal connection detection, confirming whether the external TYPE-C equipment is inserted into the TYPE-C interface and judging the respective role of two interconnected TYPE-C equipment when a second connection detection circuit indicates that the external TYPE-C equipment is inserted into the TYPE-C interface of the CC logic control chip, and a step of continuing to detect by the second connection detection circuit when the second connection detection circuit indicates that the external TYPE-C equipment is not inserted into the TYPE-C interface. According to the method and the structure, the power consumption of the CC logic control chip is reduced, and the standby power consumption is reduced by nearly 6 times.

Description

technical field [0001] The invention relates to the technical field of CC logic control chips, in particular to a low-power consumption connection detection method and structure of a CC logic control chip. Background technique [0002] The main function of the CC logic control chip is to perform connection / disconnection detection, insertion direction detection, DFP / UFP role judgment and switching through CC1 and CC2 of the TYPE-C interface, and configure VBUS mode (VBUS has two types: TYPE-C and Power Delivery mode), current capability communication in TYPE-C mode, PD communication in Power Delivery mode, VCONN configuration, configuration of other modes (such as audio accessories), etc. Before implementing these functions, connection detection must be performed first. When the TYPE-C interface is not connected, the CC logic control chip is in standby mode, and monitors the status of CC1 and CC2 on the TYPE-C interface in real time to determine whether there is an external ...

AI Technical Summary

Problems solved by technology

Once it is detected that the TPYE-C interface is connected successfully, the chip will enter the normal working mode and further complete other functions. Therefore, the standby power consumption of the CC logic control chip is actually the power consumption required for the connection detection of the TYPE-C interface, and the connection The detected power consumption mainly depends on the reference and bias modules of the chip. According to the existing practice, the standby power consumption of the CC logic control chip is about 200uA, which is very large.

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