A realization method of usb-pd PHY circuit

Abstract

The invention discloses a novel USB-PD PHY circuit which comprises a single chip microcomputer. The single chip microcomputer is connected with a CC1 module, a CC_TXD module, a TX_ENb module and a CC-RXD module, the CC1 module is connected with a CC1 or CC2 wire of a USB-3.1 interface, the CC_TXD module is connected with a CC_TXD I / O port of the single chip microcomputer, and the CC_TXD I / O port completes a function of sending USB-PD data and is switched to a high-resistance state when the USB-PD data are received; the TX_ENb module is connected with a TX_ENb I / O port of the single chip microcomputer, and the TX_ENb I / O port outputs low level when the USB-PD data are sent and is switched to a high-resistance state when the USB-PD data are received; the CC-RXD module is connected with a CC-RXD I / O port of the single chip microcomputer, and the CC-RXD I / O port completes a function of receiving the USB-PD data. The novel USB-PD PHY circuit has high performance-cost ratio, costs less than one tenth of special USB-PD PHY chips and is high in practicability, easy for popularization and application and high in economic value.

Description

technical field [0001] The invention relates to the technical field of computer interfaces, in particular to a method for implementing a USB-PD PHY circuit. Background technique [0002] With the release of the USB3.1 specification and the USB Power Delivery specification, major semiconductor manufacturers in the industry have correspondingly developed and launched solutions to the relevant parts of the specification. Among them, for the physical layer implementation of Chapter 5 of the USB Power Delivery specification, semiconductor manufacturers have introduced a chip-level solution, which is commonly known as the USB-PD PHY chip in the industry. The performance parameters and functions of the USB-PD PHY chips produced by these semiconductor manufacturers are relatively good, but the cost is relatively high. Under the increasing cost pressure of consumer electronic products, this circuit cooperates with single-chip microcomputer software to complete the physical layer imp...

AI Technical Summary

Problems solved by technology

The performance parameters and functions of the USB-PD PHY chips produced by these semiconductor manufacturers are relatively good, but the cost is relatively high

Under the increasing cost pressure of consumer electronic products, this circuit cooperates with single-chip microcomputer software to complete the physical layer implementation of Chapter 5 of the USB Power Delivery specification. It has high cost performance and the cost is less than one tenth of the professional USB-PD PHY chip. , compared with the professional USB-PD PHY chip, this circuit requires a longer debugging time in the early stage of research and development

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