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A cross-voltage domain data transmission method, voltage domain subsystem and electronic equipment

A data transmission method and technology of electronic equipment, applied in the field of cross-voltage domain data transmission method, voltage domain subsystem and electronic equipment, can solve the problems of unstable data transmission, difficult synchronization of clock signal timing, etc., and achieve easy and stable transmission, realization The effect of stable transmission

Active Publication Date: 2017-04-12
SANECHIPS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide an asynchronous interface method, a voltage domain subsystem, and electronic equipment to solve the problems in the prior art caused by the difficulty in synchronizing the timing of the data signal received in the voltage domain subsystem and the clock signal used. The problem that data cannot be transmitted stably between two voltage domain subsystems

Method used

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  • A cross-voltage domain data transmission method, voltage domain subsystem and electronic equipment
  • A cross-voltage domain data transmission method, voltage domain subsystem and electronic equipment
  • A cross-voltage domain data transmission method, voltage domain subsystem and electronic equipment

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Embodiment 1

[0025] In Embodiment 1 of the present invention, the electronic device includes two voltage domain subsystems, a first voltage domain subsystem and a second voltage domain subsystem. For example, the first voltage domain subsystem may be a CPU (Central Processing Unit, central processing unit) device) subsystem, the second voltage domain subsystem may be an SOC subsystem; or the first voltage domain subsystem may be an SOC subsystem, and the second voltage domain subsystem may be a CPU subsystem. When performing data transmission between the two, the following data transmission method can be used, and this data transmission method can also be applied to the process of implementing dynamic voltage frequency adjustment in the chip of the electronic device, and the second voltage domain subsystem sends the first voltage domain The subsystem transmits data as an example, such as figure 2 As shown, the cross-voltage domain data transmission method provided by Embodiment 1 of the p...

Embodiment 2

[0042] Based on the same inventive concept, according to the data transmission method across the voltage domain provided by the above-mentioned embodiments of the present invention, correspondingly, Embodiment 2 of the present invention also provides a voltage domain subsystem in an electronic device, and its structural diagram is as follows image 3 shown, including:

[0043] An asynchronous interface receiving unit 301, configured to receive the first cross-voltage domain data signal sent by the second voltage domain subsystem of the electronic device, and the first clock signal synchronized with the timing source of the first cross-voltage domain data signal;

[0044] The asynchronous interface collection unit 302 is configured to use the first clock signal to collect the first cross-voltage domain data signal to obtain first collection data.

[0045] The above-mentioned asynchronous interface receiving unit 301 and the asynchronous interface collecting unit 302 may jointly...

Embodiment 3

[0050] Based on the same inventive concept, according to the cross-voltage domain data transmission method provided by the above-mentioned embodiments of the present invention, correspondingly, Embodiment 3 of the present invention also provides an electronic device, the structural diagram of which is as follows Figure 4 As shown, it includes: a first voltage domain subsystem 402 and a second voltage domain subsystem 401, wherein:

[0051] The second voltage domain subsystem 401 is configured to send a first cross-voltage domain data signal to the first voltage domain subsystem 402, and a first clock signal synchronized with the timing source of the first cross-voltage domain data signal;

[0052] The first voltage domain subsystem 402 is configured to receive the first cross-voltage domain data signal and the first clock signal; and use the first clock signal to collect the first cross-voltage domain data signal to obtain first collection data.

[0053] Further, the above-me...

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Abstract

Disclosed are an inter-voltage-domain data transmission method, voltage domain sub-system, and electronic device. The method comprises: a first voltage domain sub-system of an electronic device receiving a first inter-voltage-domain data signal sent by a second voltage domain sub-system of the electronic device, and a first clock signal synchronized with the first inter-voltage-domain data signal in a timing source; collecting the first inter-voltage-domain data signal by using the first clock signal, to obtain a first collected signal. The solution provided by the embodiments of the present invention can more easily implement stable data transmission between two voltage domain sub-systems, and can reduce the complexity in implementing a chip backend.

Description

technical field [0001] The invention relates to the technical field of data transmission and the technical field of low-power chip design, in particular to a data transmission method across a voltage domain, a voltage domain subsystem and electronic equipment. Background technique [0002] As the functions of portable electronic products become more and more complex, how to use the limited battery energy in the most effective way has become one of the important issues to be solved in the design of portable electronic products, so the design of reducing power consumption has become a SoC It is an inevitable requirement for SOC (System On Chip) design. DVFS (Dynamic Voltage and Frequency Scaling) adjusts the operating frequency while raising or lowering the voltage, which is one of the effective ways to reduce power consumption. [0003] At present, the SOC supporting DVFS basically adopts the clock structure of GALS (Globally Asynchronous Locally Synchronous, Globally Asynch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/38G06F1/12
CPCG06F13/4068
Inventor 孙志文
Owner SANECHIPS TECH CO LTD
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