CN113468093A - Industrial-grade Universal Serial Bus (USB) chip, awakening method thereof and electronic equipment - Google Patents
Industrial-grade Universal Serial Bus (USB) chip, awakening method thereof and electronic equipment Download PDFInfo
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- CN113468093A CN113468093A CN202110713702.4A CN202110713702A CN113468093A CN 113468093 A CN113468093 A CN 113468093A CN 202110713702 A CN202110713702 A CN 202110713702A CN 113468093 A CN113468093 A CN 113468093A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000001960 triggered effect Effects 0.000 claims abstract description 6
- 230000007306 turnover Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 abstract description 2
- 230000007958 sleep Effects 0.000 description 13
- 230000002093 peripheral effect Effects 0.000 description 9
- 230000006870 function Effects 0.000 description 6
- 230000002618 waking effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4418—Suspend and resume; Hibernate and awake
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Power Sources (AREA)
Abstract
The embodiment of the invention provides an industrial Universal Serial Bus (USB) chip, a wake-up method thereof and electronic equipment. The industrial-grade universal serial bus USB chip comprises: the USB controller is used for controlling the USB chip to enter a dormant state when receiving an interrupt signal from a host connected with the USB chip; and the awakening interface is connected to a differential signal line of the USB chip and electrically connected with the USB controller, and is used for awakening the USB chip according to level turnover on the awakening interface. Through the awakening interface connected to the differential signal line of the USB chip, after all parts/modules of the USB chip enter a dormant state, awakening of the USB chip can be automatically triggered according to level turnover on the awakening interface, so that awakening of the USB chip is achieved through a simple structure and an awakening mechanism, power consumption of the USB chip is reduced, and ultra-low power consumption is achieved in an industrial application scene.
Description
Technical Field
The embodiment of the invention relates to low-power-consumption electronic equipment, in particular to an industrial Universal Serial Bus (USB) chip, a wake-up method thereof and electronic equipment.
Background
At present, more and more electronic devices/devices adopt a USB (universal serial bus) interface supporting plug and play to interact with a connection host, such as a flash memory, an internet banking U-shield, a keyboard, a mouse and other peripheral devices of a computer. A USB chip and a USB interface for connecting to a host are integrated within these devices/devices.
In order to realize low power consumption, when the connection host enters the sleep mode, a signal, such as a suspend signal, is sent to the peripheral devices connected (through the USB interface), so that the peripheral devices enter a low power consumption state, and USB chips in the peripheral devices enter the sleep state. After the connection host finishes dormancy, a resume signal can be sent to the peripheral equipment through the USB interface, the USB chip and the peripheral equipment are awakened, and the USB chip and the peripheral equipment are enabled to resume normal work.
In the existing hardware implementation scheme for waking up the USB chip, as shown in fig. 1, after entering the sleep state, the USB module (chip) still needs to detect the differential signal line of the host interface. When the level inversion on the differential signal line is detected, the USB chip exits the sleep state. Therefore, the USB chip cannot completely enter the sleep state, which affects the overall power consumption of the USB chip.
Disclosure of Invention
The embodiment of the invention aims to provide a wake-up scheme of the industrial USB chip realized by hardware, so that the power consumption of the industrial USB chip is effectively reduced.
According to an aspect of the present invention, there is provided an industrial-grade universal serial bus USB chip, comprising: the USB controller is used for controlling the USB chip to enter a dormant state when receiving an interrupt signal from a host connected with the USB chip; and the awakening interface is connected to a differential signal line of the USB chip and electrically connected with the USB controller, and is used for awakening the USB chip according to level turnover on the awakening interface.
Optionally, the differential signal line includes a differential signal line DP and a differential signal line DM.
Optionally, the number of the wake-up interfaces is two, and the two wake-up interfaces are respectively connected to the differential signal line DP and the differential signal line DM.
Optionally, the wake-up interface is a general purpose input/output GPIO interface having a wake-up function.
According to another aspect of the present invention, there is provided a wake-up method for an industrial USB chip, wherein the USB chip has the structure of any one of the USB chips described above, and the wake-up method includes: when an interrupt signal from a host connected with the USB chip is received, the USB controller controls the USB chip to enter a dormant state; in a dormant state, when the level of the awakening interface is turned over, the USB chip is triggered to be automatically awakened, so that the USB chip enters a working state.
Optionally, the differential signal line includes a differential signal line DP and a differential signal line DM, the wake-up interface is two GPIO interfaces, and the two GPIO interfaces are respectively connected to the differential signal line DP and the differential signal line DM. Wherein, the level upset that takes place on awakening the interface includes: and level inversion occurs on the GPIO interface connected to the differential signal line DP, and/or level inversion occurs on the GPIO interface connected to the differential signal line DM.
According to a further aspect of the invention there is provided an electronic device comprising any of the industrial-grade universal serial bus, USB, chips described above.
According to the industrial-grade universal serial bus USB chip, the awakening method thereof and the electronic device, the awakening interface with the awakening function connected to the differential signal line is utilized, the USB chip can be awakened according to the level inversion on the awakening interface after the whole USB chip enters the dormant state, the chip is not required to continuously monitor the signal change of the differential signal line in the dormant state, and therefore the power consumption of the USB chip can be reduced.
Drawings
FIG. 1 is a schematic diagram of a hardware implementation of a prior art wake-up USB chip;
FIG. 2 is a diagram illustrating a hardware implementation for waking up an industrial-grade USB chip according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for waking up an industrial-grade USB chip according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings (like numerals indicate like elements throughout the several views) and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
FIG. 2 is a diagram illustrating a hardware implementation for waking up an industrial-grade USB chip according to an embodiment of the present invention.
Referring to fig. 2, an industrial-grade universal serial bus USB chip 200 according to an embodiment of the present invention includes at least a USB controller 210 and a wake-up interface 220. The USB chip 200 also includes differential signal lines 230 and other components/modules for implementing the necessary functions of the USB chip.
Wherein, when receiving an interrupt signal from a host connected to the USB chip 200, the USB controller 210 is configured to control the USB chip 200 to enter a sleep state.
The wake-up interface 220 is electrically connected to the USB controller 210 and connected to the differential signal line 230 of the USB chip, and is configured to wake up the USB chip 200 according to a level flip on the wake-up interface, so that each component/module (including the differential signal line 230) of the USB chip 200 enters an operating state.
In general, the differential signal line 230 includes a differential signal line DP on which a positive differential signal D + is transmitted and a differential signal line DM on which a negative differential signal D-is transmitted.
According to an embodiment of the present invention, a general purpose input output GPIO interface with wake-up function is adopted as the wake-up interface 220. By using the GPIO interface with the wake-up function connected to the differential signal line 230, the USB chip 200 can be woken up according to the level inversion on the GPIO interface after the entire USB chip 200 enters the sleep state, so that the power consumption of the USB chip can be reduced, and ultra-low power consumption can be achieved in an industrial application scenario.
The following describes the processing of the method for waking up the industrial-grade USB chip according to the embodiment of the present invention with reference to fig. 3.
FIG. 3 is a flow chart of a method for waking up an industrial-grade USB chip according to an embodiment of the present invention. Here, the industrial-grade USB chip may be the USB chip 200 having any one of the aforementioned structures.
When the host connected to the USB chip 200 enters the sleep state, it sends an interrupt signal to the peripheral devices (including the USB chip) connected thereto. The interrupt signal is sent, for example, through a differential signal line connecting the USB chip.
At this time, referring to fig. 3, in step S310, when an interrupt signal is received from a host connected to the USB chip 200, the USB controller 210 controls the USB chip 200 to enter a sleep state.
The interrupt signal, such as the suspend signal, can be detected by conventional signal detection means. When an interrupt signal from a host connected to the USB chip 200 is detected, the USB controller 210 may control the respective components of the USB chip 200 to enter a sleep state without detecting a differential signal line of a host interface.
When the host is awakened after the USB chip 200 enters a sleep state together with the host connected thereto, the host sends a resume signal to the peripheral devices (including the USB chip) connected thereto. The resume signal (e.g., resume signal) is sent, for example, over a differential signal line connecting the USB chips. At this point, a level flip will occur on the wake-up interface 220 connected to the differential signal lines of the USB chip.
In step S320, in the sleep state, when the level of the wake-up interface 220 is turned over, the wake-up USB chip 200 is triggered to be automatically woken up, so that each component of the USB chip 200 enters a working state.
When the level of the wake-up interface 220 with the wake-up function is turned over, the USB chip 200 may be automatically triggered to wake up, so that the USB chip 200 may automatically wake up without continuously monitoring the signal on the differential signal line in a sleep state.
According to the foregoing exemplary embodiment of the present invention, the differential signal line 230 includes the differential signal line DP and the differential signal line DM, and the wake-up interface 220 is two GPIO interfaces; the two GPIO interfaces are connected to the differential signal line DP and the differential signal line DM, respectively.
Specifically, the level flipping on the wake-up interface 220 may include: and level inversion occurs on the GPIO interface connected to the differential signal line DP, and/or level inversion occurs on the GPIO interface connected to the differential signal line DM.
The level flip of the GPIO interface connected to any of the differential signal lines may trigger the USB chip 200 to wake up, or of course, the USB chip 200 may be woken up when the level flip of the GPIO interface connected to the differential signal line DP and the GPIO interface connected to the differential signal line DM occurs.
According to the industrial-grade universal serial bus USB chip and the awakening method thereof, through the awakening interface connected to the differential signal line of the USB chip, after each part/module of the USB chip enters a dormant state, awakening of the USB chip can be automatically triggered according to level inversion generated on the awakening interface, so that awakening of the USB chip is achieved through a simple structure and an awakening mechanism, power consumption of the USB chip is reduced, and ultra-low power consumption is achieved in an industrial-grade application scene.
The embodiment of the invention also provides electronic equipment comprising any one industrial-grade USB chip.
The above embodiments are only for illustrating the embodiments of the present invention and not for limiting the embodiments of the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the embodiments of the present invention, so that all equivalent technical solutions also belong to the scope of the embodiments of the present invention, and the scope of patent protection of the embodiments of the present invention should be defined by the claims.
Claims (7)
1. An industrial-grade Universal Serial Bus (USB) chip, comprising:
the USB controller is used for controlling the USB chip to enter a dormant state when receiving an interrupt signal from a host connected with the USB chip;
and the awakening interface is connected to a differential signal line of the USB chip and electrically connected with the USB controller, and is used for awakening the USB chip according to level turnover on the awakening interface.
2. The USB chip according to claim 1, wherein the differential signal line includes a differential signal line DP and a differential signal line DM.
3. The USB chip according to claim 2, wherein the number of the wake-up interfaces is two, and the two wake-up interfaces are respectively connected to the differential signal line DP and the differential signal line DM.
4. The USB chip according to claim 2, wherein the wake-up interface is a general purpose input output GPIO interface with wake-up function.
5. A wake-up method for an industrial USB chip, wherein the USB chip has the structure of the USB chip as claimed in any one of claims 1 to 4, the wake-up method comprising:
when an interrupt signal from a host connected with the USB chip is received, the USB controller controls the USB chip to enter a dormant state;
in a dormant state, when the level of the awakening interface is turned over, the USB chip is triggered to be awakened automatically, so that the USB chip enters a working state.
6. The method of claim 5, wherein the differential signal line comprises a differential signal line DP and a differential signal line DM, wherein the wake-up interface is two GPIO interfaces respectively connected to the differential signal line DP and the differential signal line DM,
wherein, the level upset that takes place on awakening the interface includes:
a level flip occurs on the GPIO interface connected to the differential signal line DP, and/or,
and the GPIO interface connected to the differential signal line DM is subjected to level inversion.
7. An electronic device comprising the industrial-grade Universal Serial Bus (USB) chip as claimed in any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110713702.4A CN113468093A (en) | 2021-06-25 | 2021-06-25 | Industrial-grade Universal Serial Bus (USB) chip, awakening method thereof and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110713702.4A CN113468093A (en) | 2021-06-25 | 2021-06-25 | Industrial-grade Universal Serial Bus (USB) chip, awakening method thereof and electronic equipment |
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| Publication Number | Publication Date |
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| CN113468093A true CN113468093A (en) | 2021-10-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938818A (en) * | 2010-08-30 | 2011-01-05 | 中兴通讯股份有限公司 | Two-way waking method, equipment and system based on USB |
| US20180011528A1 (en) * | 2014-12-08 | 2018-01-11 | Intel Corporation | Interconnect wake response circuit and method |
| CN109451759A (en) * | 2018-06-11 | 2019-03-08 | 深圳佳比泰智能照明股份有限公司 | Remote controler and remote control method |
| CN109474853A (en) * | 2018-11-27 | 2019-03-15 | 深圳Tcl新技术有限公司 | A kind of television set wake-up circuit and the television set with it |
| CN109857243A (en) * | 2017-11-28 | 2019-06-07 | 华为技术有限公司 | System level chip, universal serial bus main equipment, system and awakening method |
-
2021
- 2021-06-25 CN CN202110713702.4A patent/CN113468093A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938818A (en) * | 2010-08-30 | 2011-01-05 | 中兴通讯股份有限公司 | Two-way waking method, equipment and system based on USB |
| WO2012027991A1 (en) * | 2010-08-30 | 2012-03-08 | 中兴通讯股份有限公司 | Method, device and system for bidirectional wake-up based on universal serial bus |
| US20180011528A1 (en) * | 2014-12-08 | 2018-01-11 | Intel Corporation | Interconnect wake response circuit and method |
| CN109857243A (en) * | 2017-11-28 | 2019-06-07 | 华为技术有限公司 | System level chip, universal serial bus main equipment, system and awakening method |
| CN109451759A (en) * | 2018-06-11 | 2019-03-08 | 深圳佳比泰智能照明股份有限公司 | Remote controler and remote control method |
| CN109474853A (en) * | 2018-11-27 | 2019-03-15 | 深圳Tcl新技术有限公司 | A kind of television set wake-up circuit and the television set with it |
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Application publication date: 20211001 |