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Method for realizing communication between smart mobile phone chips and smart mobile phone

A technology between smart phones and chips, applied in telephone communication, branch office equipment, electrical components, etc., can solve problems such as low error rate, high cost, and increased difficulty in technical implementation, so as to ensure real-time performance and accuracy, and improve flexibility , the effect of simplifying the complexity

Active Publication Date: 2010-12-29
ST ERICSSON SEMICON BEIJING
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (1) UART is relatively simple to implement, widely used and low in cost, but the transmission rate of UART is generally below 1.5Mbps, which cannot meet the requirements of 3G wireless communication
[0010] (2) The USB speed is high, and USB2.0 can support the high-speed transmission mode of 480Mbps, but the data needs to be organized and packaged according to the requirements of the USB protocol before transmission, which increases the difficulty of technical implementation and limits the flexibility of design
[0011] (3) DPRAM is an inter-chip communication method with excellent performance, fast speed and low error rate, but its high cost also discourages many manufacturers

Method used

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  • Method for realizing communication between smart mobile phone chips and smart mobile phone
  • Method for realizing communication between smart mobile phone chips and smart mobile phone
  • Method for realizing communication between smart mobile phone chips and smart mobile phone

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Embodiment Construction

[0061] The HSI protocol is proposed by the Mobile Industry Processor Interface (MIPI) Alliance and is a high-speed synchronous serial interface protocol used in inter-chip communication. Its main features are as follows:

[0062] (1) HSI is divided into two modules: HSIT (HSI Transmitter, HSI transmitter) and HSIR (HSI Receiver, HSI receiver); they realize the one-way sending and one-way receiving functions of HSI respectively.

[0063](2) The physical layer signals of HSIT and HSIR include: DATA, FLAG, READY. The DATA signal transmits the data actually sent, and its transmission direction is from HSIT to HSIR. The FLAG signal is used to indicate the change of the DATA signal, and its transmission direction is from HSIT to HSIR; the XOR of the FLAG signal and the DATA signal is the clock signal of HSIT, and HSIR can use this clock signal to realize synchronous sampling of data. The READY signal is a control signal, and its transmission direction is from HSIR to HSIT; once HS...

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Abstract

The invention provides a method for realizing the communication between smart mobile phone chips and a smart mobile phone. The smart mobile phone is configured with a first processor and a second processor. The method comprises that: an HSIT is established in the first processor and an HSIR in the second processor, wherein the HSIT and the HSIR shake hands through a handshaking sequence; the HSITsends a data transmission instruction to the HSIR through an instruction channel; the HSIR receives the data transmission instruction and transmits confirmation information to the HSIT through the instruction channel; the HSIT receives the confirmation information and transmits data to the HSIR through the data channel; and the HSIR receives the data from the data channel. In the invention, the communication between the smart mobile phone chips is realized on the basis of an HSI protocol, and the flexibility increase and complexity reduction and cost reduction of the communication between thesmart mobile phone chips are realized on the premise of ensuring the real-time and accuracy of the communication between the smart mobile phone chips.

Description

technical field [0001] The invention relates to an inter-chip communication technology of a smart phone in a mobile communication terminal, in particular to a method for realizing communication between chips of a smart phone and a smart phone based on HSI (High-speed Synchronous Serial Interface, high-speed synchronous serial interface). Background technique [0002] With the continuous development of the communication industry, mobile terminals have evolved from the original single call function to voice, data, image, music and multimedia. Compared with traditional mobile phones (feature phones), smart phones (smart phones) are more and more favored by people because of their powerful functions and convenient operation. [0003] The current smart phone generally adopts a dual CPU (Central Processing Unit, central processing unit) technology in terms of hardware architecture, that is, it is composed of an AP (Application Processor, application processor) and a BP (Baseband P...

Claims

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Application Information

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IPC IPC(8): H04M1/725H04M1/72403H04M1/72406
Inventor 李建慧
Owner ST ERICSSON SEMICON BEIJING
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