Power-down power domain and switch control system and method, electronic equipment and chip

Abstract

The invention discloses a power-down power domain, a switch control system and method, electronic equipment and a chip, and relates to the technical field of chips, and the power-down power domain comprises a first control circuit, a second control circuit and a plurality of power switch chains. The plurality of power switch chains are connected in series based on the first control line; the plurality of power switch chains are connected in parallel based on the second control line; the first control circuit is used for carrying out serial control on the plurality of power switch chains according to a received control signal, and the second control circuit is used for carrying out parallel control on the plurality of power switch chains according to the control signal and outputting a confirmation signal corresponding to the control signal. Compared with the prior art, the power-on and power-off speed of the power-down power domain can be accelerated, meanwhile, the risk that the current change rate is too large in the power-on and power-off process is reduced, the response time and the overall performance in the power-on and power-off process of the power-down power domain are guaranteed, and the implementation complexity is low.

Description

Technical Field

[0001] This application relates to the field of chip technology, and particularly to a power-down power domain, a switching control system, a method, an electronic device, and a chip. Background Art

[0002] During normal operation of the chip, the Power-Down Domain (PDD) turns off modules that are not required for certain services immediately when they are not in use, and powers down the modules that are not needed inside the chip to save static leakage and reduce power consumption.

[0003] In related technologies, the power-up and power-down speeds of the power-down power domain are relatively slow, resulting in an impact on the response time and overall performance. Summary of the Invention

[0004] In view of this, this application provides a power-down power domain, a switching control system, a method, an electronic device, and a chip.

[0005] In a first aspect, this application provides a power-down power domain, including: a first control line, a second control line, and a plurality of power switch chains;

[0006] Based on the first control line, the plurality of power switch chains are connected in series;

[0007] Based on the second control line, the plurality of power switch chains are connected in parallel;

[0008] The first control line is used to serially control the plurality of power switch chains according to the received control signal, and the second control line is used to parallelly control the plurality of power switch chains according to the control signal and output an acknowledgement signal corresponding to the control signal.

[0009] Optionally, it further includes: a delay module;

[0010] Based on the first control line, the first input ends of the plurality of power switch chains are externally connected to a control module, and the first output ends of the plurality of power switch chains are connected to the input end of the delay module;

[0011] Based on the second control line, the output end of the delay module is connected to the second input ends of the plurality of power switch chains, and the second output ends of the plurality of power switch chains are externally connected to a selection module.

[0012] The delay module is used to perform signal delay processing on the control signal output by the first control line and input the processed control signal into the second control line.

[0013] Optionally, the multiple power switch chains include a first power switch chain, at least one intermediate power switch chain, and a last power switch chain;

[0014] Based on the first control circuit, a first input end of the first power switch chain is externally connected to a control module, and a first output end of the first power switch chain is connected in series with the at least one intermediate power switch chain and the last power switch chain;

[0015] Based on the second control circuit, a first output end of the last power switch chain is respectively connected to second input ends of each power switch chain, and a second output end of each power switch chain is externally connected to the selection module.

[0016] Optionally, the delay module includes multiple delay unit groups, wherein each power switch chain is correspondingly configured with a delay unit group, and each delay unit group includes at least one delay unit;

[0017] Based on the second control circuit, a first output end of the last power switch chain is respectively connected to a first end of each delay unit group, and a second end of each delay unit group is connected to a second input end of its corresponding power switch chain.

[0018] Optionally, each power switch chain includes multiple power switch units connected in series, and each power switch unit includes a first current unit and a second current unit;

[0019] In each power switch chain, multiple first current units of multiple power switches are connected in series to form a first current unit switch chain in each power switch chain, and multiple second current units of multiple power switches are connected in series to form a second current unit switch chain in each power switch chain.

[0020] Optionally, based on the first control circuit, the multiple first current unit switch chains are connected in series;

[0021] Based on the second control circuit, the multiple second current unit switch chains are connected in parallel.

[0022] In a second aspect, the present application provides a switch control system, including: a control module, a selection module, and the power-off power domain described in the first aspect;

[0023] An input end of the power-off power domain is connected to the control module, an output end of the power-off power domain is connected to a first input end of the selection module, and a second input end of the selection module is further connected to the control module;

[0024] The power-off power domain is configured to receive a control signal from the control module, and serially control multiple power switch chains in the power-off power domain according to the control signal through a first control circuit;

[0025] The power-down power domain is further configured to perform parallel control on the multiple power switch chains according to the control signal through a second control line, and output an acknowledgement signal corresponding to the control signal.

[0026] Optionally, the control module is configured to input the control signal into the power-down power domain;

[0027] The selection module is configured to determine the signal type of the acknowledgement signal based on the control signal, and output the acknowledgement signal according to the signal type.

[0028] Optionally, the selection module includes a first logic unit, a second logic unit, and a selection unit;

[0029] The input end of the first logic unit and the input end of the second logic unit are respectively connected to the second output ends of the multiple power switch chains, and the output end of the first logic unit and the output end of the first logic unit are respectively connected to the first input end of the selection unit;

[0030] The first logic unit is configured to output a high-level acknowledgement signal when all the acknowledgement signals are high-level signals, and the second logic unit is configured to output a low-level acknowledgement signal when all the acknowledgement signals are low-level signals.

[0031] Optionally, the second input end of the selection unit is connected to the control module;

[0032] The selection unit is configured to receive the acknowledgement signal from the first logic unit or the second logic unit based on the signal type, and output the acknowledgement signal.

[0033] In a third aspect, the present application provides a switch control method, including:

[0034] Performing serial control on multiple power switch chains through a first control line, and performing parallel control on the multiple power switch chains through a second control line based on the obtained control signal, to obtain an acknowledgement signal corresponding to the control signal.

[0035] Optionally, the method further includes:

[0036] Determining the signal type corresponding to the acknowledgement signal based on the control signal;

[0037] Outputting the acknowledgement signal from the first logic unit or the second logic unit based on the signal type.

[0038] In a fourth aspect, the present application provides an electronic device including the power-down power domain described in the first aspect, or the switch control system described in the second aspect.

[0039] In a fifth aspect, the present application provides a chip, including the power-down power domain described in the first aspect or the switch control system described in the second aspect.

[0040] By means of the above technical solutions, compared with the current existing technologies, for a power-down power domain, a switch control system, a method, an electronic device, and a chip provided by the present application, the present application serially connects multiple power switch chains based on a first control line and parallelly connects multiple power switch chains based on a second control line. Through the first control line, serial control is performed on the multiple power switch chains according to the received control signal, and through the second control line, parallel control is performed on the multiple power switch chains according to the control signal, and an acknowledgement signal corresponding to the control signal is output, which can accelerate the power-on and power-off speeds of the power-down power domain, and at the same time reduce the risk of excessive current change rate during power-on and power-off, ensure the response time and overall performance during the power-on and power-off processes of the power-down power domain, and have low implementation complexity.

[0041] The above description is only an overview of the technical solutions of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features, and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically given below. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0044] Figure 1 shows a schematic structural diagram of a power-down power domain provided by an embodiment of the present application;

[0045] Figure 2 shows a schematic structural diagram of a switch control system provided by an embodiment of the present application;

[0046] Figure 3 shows a schematic flowchart of a switch control method provided by an embodiment of the present application;

[0047] Figure 1 wherein:

[0048] 1 - power-down power domain, 11 - first control line, 12 - second control line, 13 - power switch chain, 14 - delay module;

[0049] Figure 2 In the middle:

[0050] 2 - Control module,

[0051] 3 - Selection module, 31 - First logic unit, 32 - Second logic unit, 33 - Selection unit. Detailed implementation manners

[0052] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0053] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0054] In the present application, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0055] The present application will be described in detail below with reference to the drawings and in combination with embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0056] The following will be combined with Figure 1 Describe the power - down power domain according to some embodiments of the present application.

[0057] A power - down power domain 1 provided by the present application, as Figure 1As shown in the figure, it includes: a first control circuit 11, a second control circuit 12, and multiple power switch chains 13; based on the first control circuit 11, the multiple power switch chains 13 are connected in series; based on the second control circuit 12, the multiple power switch chains 13 are connected in parallel; the first control circuit 11 is used to serially control the multiple power switch chains 13 according to the received control signal, and the second control circuit 12 is used to parallelly control the multiple power switch chains 13 according to the control signal and output an acknowledgement signal corresponding to the control signal.

[0058] In the embodiment of the present application, the power-down power domain (Power-Down Domain, PDD) is used to turn off modules that are not required for some services when the chip is in normal use, and perform in-chip power-down on modules that are not required inside the chip.

[0059] In some examples, a power switch chain (Power Switch Chain) refers to a system composed of multiple power switch units connected in series or parallel, which is used to manage and distribute power. This design is usually applied to complex power systems that require independent control, protection, and monitoring of different loads. To ensure the efficiency and reliability of the system, a delay unit is sometimes set before the power switch chain to optimize signal transmission and processing. Exemplarily, the multiple power switch chains in the embodiment of the present application can be arranged side by side.

[0060] For this embodiment, the first control circuit 11 can be a circuit that receives an input control signal. Specifically, the first control circuit 11 can be a control circuit that connects small current units in multiple power switch chains in series; correspondingly, the second control circuit 12 can be a circuit that outputs an acknowledgement signal. Specifically, the second control circuit 12 can be a control circuit that connects large current units in multiple power switch chains in parallel.

[0061] Exemplarily, in a power management system, according to the magnitude of the processed current, circuits or modules can be divided into small current units and large current units. This classification helps to optimize the design, improve efficiency, and ensure the stability and safety of the system. When powering on and off in the power-down domain, the small current unit can control the current passing through it not to exceed its maximum current, thereby suppressing the current change rate and avoiding potential voltage drop and other problems caused by too large a current change rate.

[0062] As an alternative, a Control-Acknowledge Signal is a communication mechanism used to ensure reliable information exchange between the sender and receiver of commands or data; among them, the control signal is an instruction or data packet sent by the sender, indicating the receiver to perform a specific operation. The Acknowledge Signal (ACK) is the response returned by the receiver to the sender after successfully receiving and processing the control signal, indicating that the operation has been completed.

[0063] In the embodiment of the present application, when the first control line 11 receives a control signal, it serially controls a plurality of power switch chains 13, and the second control line 12 parallelly controls the plurality of power switch chains 13 based on the control signal to obtain an acknowledge signal.

[0064] Compared with the current related technologies, in this embodiment, a plurality of power switch chains are connected in series based on the first control line, and a plurality of power switch chains are connected in parallel based on the second control line. Through the first control line, the plurality of power switch chains are serially controlled according to the received control signal, and through the second control line, the plurality of power switch chains are parallelly controlled according to the control signal, and the acknowledge signal corresponding to the control signal is output, which can accelerate the power-on and power-off speed of the power-down power domain, and at the same time reduce the risk of excessive current change rate during the power-on and power-off process, ensure the response time and overall performance during the power-on and power-off process of the power-down power domain, and the implementation complexity is low.

[0065] Optionally, the power-down power domain 1 of the embodiment of the present application further includes a delay module 14; based on the first control line 11, the first input ends of the plurality of power switch chains 13 are externally connected to a control module 2, and the first output ends of the plurality of power switch chains 13 are connected to the input end of the delay module 14; based on the second control line 12, the output end of the delay module 14 is connected to the second input ends of the plurality of power switch chains 13, and the second output ends of the plurality of power switch chains 13 are externally connected to a selection module 3. The delay module 14 is used to perform signal delay processing on the control signal output by the first control line 11 and input the processed control signal into the second control line 12.

[0066] For this embodiment, in the design of the power-down power domain, the delay module 14 includes multiple groups of delay units, and the delay units can be used to optimize signal processing and system response, especially in applications that require precise control of the switch sequence or reduction of transient shocks.

[0067] In some examples, the control module 2 can be a module that inputs a control signal to the first control line 11. Specifically, the control module 2 can receive analog or digital signals from external sensors, switches, controllers and other devices, and convert these signals into control signals and input them into the first control line 11.

[0068] It should be noted that the name of the control module 2 can also be a signal input module, a signal processing module, a signal conversion module, etc. The specific name of the control module 2 is not limited herein.

[0069] In the embodiment of the present application, the selection module 3 can be a module that selects a confirmation signal of the digital output according to the power-on and power-off conditions of the power-off power domain 1. Correspondingly, the name of the selection module 3 can also be a confirmation module, an output module, etc. The name of the selection module is not limited herein.

[0070] In some examples, the power switch chain 13 in the present application can include two input terminals and two output terminals, specifically, a first input terminal, a first output terminal, a second input terminal, and a second output terminal. Among them, the first control line 11 corresponds to the first input terminal and the first output terminal, and the second control line 12 corresponds to the second input terminal and the second output terminal.

[0071] As an optional method, the delay module 14 can be respectively connected to the first control line 11 and the second control line 12. Since the first control line 11 is a connection to a small current unit and the second control line 12 is a connection to a large current unit, adding the delay module 14 between the first control line 11 and the second control line 12 can optimize the startup sequence of the system, reduce transient shocks, and improve the overall stability and reliability.

[0072] Specifically, the startup sequence can be optimized to start in stages: 1. Avoid simultaneous startup: By using the delay unit, the startup time difference between different power switch chains can be set to prevent all power switch chains from being powered on at the same moment, thereby avoiding the generation of excessive inrush current. 2. Protect the power system: Starting in stages helps to reduce the burden on the power system, especially in the case of multiple loads, ensuring that each unit can obtain sufficient startup current. It can also reduce transient shocks and buffer the current peak: 1. Reduce current spikes: When multiple large current units start simultaneously, it may cause the current peak to be too high, damaging the power supply and the circuit. The delay unit can effectively disperse these peaks and make the current rise more smoothly. 2. Protect sensitive components: For the connected small current units, sudden large current fluctuations may damage the sensitive electronic components inside. The delay unit can provide the necessary buffering to protect these components from transient voltages or currents.

[0073] Optionally, the multiple power switch chains 13 include a first power switch chain, at least one intermediate power switch chain, and a last power switch chain; based on the first control line 11, the first input end of the first power switch chain is externally connected to a control module, and the first output end of the first power switch chain is connected in series with at least one intermediate power switch chain and the last power switch chain; based on the second control line 12, the first output end of the last power switch chain is respectively connected to the second input ends of each power switch chain, and the second output ends of each power switch chain are externally connected to a selection module.

[0074] Exemplarily, if the multiple power switch chains 13 include a first power switch chain A, intermediate power switch chains B and C, and a last power switch chain D, the control module inputs a control signal into the power-off power domain through the first input end of the power switch chain A. The first output end of the power switch chain A is connected to the first input end of the power switch chain B. The first output end of the power switch chain B is connected to the first input end of the power switch chain C. The first output end of the power switch chain C is connected to the first input end of the power switch chain D. The first output end of the power switch chain D is respectively connected to the second input ends of the power switch chains A, B, C, and D. The second output ends of the power switch chains A, B, C, and D respectively output confirmation signals.

[0075] Optionally, the delay module 14 includes multiple delay unit groups. Each power switch chain is correspondingly configured with a delay unit group, and each delay unit group contains at least one delay unit; based on the second control line 12, the first output end of the last power switch chain is respectively connected to the first ends of each delay unit group, and the second ends of each delay unit group are connected to the second input ends of their corresponding power switch chains.

[0076] Exemplarily, based on the above example, if the multiple power switch chains 13 may include a first power switch chain A, intermediate power switch chains B and C, and a last power switch chain D, the power switch chains A, B, C, and D are respectively correspondingly configured with delay unit groups A, B, C, and D. The first output end of the power switch chain D is respectively connected to the first ends of the delay unit groups A, B, C, and D. The second end of the delay unit group A is connected to the second input end of the power switch chain A. The second end of the delay unit group B is connected to the second input end of the power switch chain B. The second end of the delay unit group C is connected to the second input end of the power switch chain C. The second end of the delay unit group D is connected to the second input end of the power switch chain D.

[0077] It should be noted that since the number of power switch units included in each power switch chain 13 can be the same or different, the number of delay units included in the delay unit group corresponding to each power switch chain 13 can be the same or different, and no limitation is made here.

[0078] Optionally, each power switch chain 13 includes a plurality of power switch units connected in series, and each power switch unit includes a first current unit and a second current unit; in each power switch chain 13, the first current units of the plurality of power switches are connected in series to form a first current unit switch chain in each power switch chain 13, and the second current units of the plurality of power switches are connected in series to form a second current unit switch chain in each power switch chain.

[0079] In the embodiments of the present application, the first current unit can be a small current unit in the power switch unit, and correspondingly, the second current unit can be a large current unit in the power switch unit.

[0080] Exemplarily, each power switch chain includes a plurality of power switch units connected in series, and each power switch unit includes a small current unit and a large current unit. Therefore, a small current unit chain and a large current unit chain can be formed in each power switch chain.

[0081] Optionally, based on the first control line 11, a plurality of first current unit switch chains are connected in series; based on the second control line, a plurality of second current unit switch chains are connected in parallel.

[0082] Compared with the current existing technologies, in this embodiment, a plurality of power switch chains are connected in series based on the first control line, and a plurality of power switch chains are connected in parallel based on the second control line. Through the first control line, serial control is performed on a plurality of power switch chains according to the received control signal. Through the second control line, parallel control is performed on a plurality of power switch chains according to the control signal, and an acknowledgement signal corresponding to the control signal is output, which can accelerate the power-on and power-off speed of the power-down power domain, and at the same time reduce the risk of excessive current change rate during the power-on and power-off process, ensure the response time and overall performance during the power-on and power-off process of the power-down power domain, and have low implementation complexity.

[0083] The following combines Figure 2 Describe a switch control system according to some embodiments of the present application.

[0084] A switch control system provided by the present application, as Figure 2As shown, it includes: a control module 2, a selection module 3, and the power-down power domain 1 of the above embodiment; the input end of the power-down power domain 1 is connected to the control module 2, the output end of the power-down power domain 1 is connected to the first input end of the selection module 3, and the second input end of the selection module 3 is also connected to the control module 2; the power-down power domain 1 is configured to receive the control signal from the control module 2 and serially control a plurality of power switch chains 13 in the power-down power domain according to the control signal through a first control line 11; the power-down power domain 1 is further configured to parallelly control the plurality of power switch chains 13 through a second control line 12 according to the control signal and output an acknowledgement signal corresponding to the control signal.

[0085] In an embodiment of the present application, the first control line 11 may be a circuit for receiving an input control signal. Specifically, the first control line 11 may be a control line that connects small current units in a plurality of power switch chains in series; correspondingly, the second control line 12 may be a circuit for outputting an acknowledgement signal. Specifically, the second control line 12 may be a control line that connects large current units in a plurality of power switch chains in parallel.

[0086] In some examples, when the first control line 11 receives the control signal, it serially controls the plurality of power switch chains 13, and the second control line 12 parallelly controls the plurality of power switch chains 13 based on the control signal to obtain an acknowledgement signal.

[0087] Optionally, the control module 2 is configured to input the control signal into the power-down power domain 1; the selection module 3 is configured to determine the signal type of the acknowledgement signal based on the control signal and output the acknowledgement signal according to the signal type.

[0088] In an embodiment of the present application, a Control-Acknowledge Signal is a communication mechanism used to ensure reliable information exchange between the sender and receiver of a command or data; wherein, the control signal is an instruction or data packet sent by the sender, indicating the receiver to perform a specific operation. The acknowledgement signal (Acknowledge, ACK) is a response returned by the receiver to the sender after successfully receiving and processing the control signal, indicating that the operation has been completed.

[0089] In some examples, the control module 2 inputs the control signal into the power-down power domain 1, serially controls the plurality of power switch chains 13 based on the power-down power domain 1 through the internal first control line 11, and parallelly controls the plurality of power switch chains 13 based on the internal second control line 12 of the power-down power domain 1, and outputs an acknowledgement signal corresponding to each power switch chain 13. The power-down power domain 1 sends the acknowledgement signal to the selection module 3.

[0090] Optionally, the selection module 3 includes a first logic unit 31, a second logic unit 32, and a selection unit 33; the input ends of the first logic unit 31 and the second logic unit 32 are respectively connected to the second output ends of a plurality of power switch chains 13, and the output ends of the first logic unit 31 and the second logic unit 32 are respectively connected to the first input end of the selection unit 33; the first logic unit 31 is configured to output a high-level confirmation signal when the confirmation signals are all high-level signals, and the second logic unit 32 is configured to output a low-level confirmation signal when the confirmation signals are all low-level signals.

[0091] In the embodiment of the present application, the logic gate corresponding to the first logic unit may be an AND gate. The AND gate is one of the most basic logic gates in digital logic circuits and is used to perform binary logical multiplication operations. It determines the output signal according to the states of the input signals. Only when all inputs are high level (logic 1), the output of the AND gate will be high level; as long as one or more inputs are low level (logic 0), its output will be low level.

[0092] In some examples, the logic gate corresponding to the second logic unit may be an OR gate. The OR gate is one of the basic logic gates in digital logic circuits and is used to perform binary logical addition operations. It determines the output signal according to the states of the input signals. As long as one or more inputs are high level (logic 1), the output of the OR gate will be high level; only when all inputs are low level (logic 0), its output will be low level.

[0093] It should be noted that each power switch chain 13 outputs a confirmation signal, and the confirmation signals output by each power switch chain 13 will be respectively transmitted to the first logic unit and the second logic unit. Exemplarily, if there are a power switch chain A and a power switch chain B, the control signal A output by the power switch chain A corresponds to a high-level signal (logic 1), and the control signal B output by the power switch chain B corresponds to a low-level signal (logic 0), then the output signal of the control signal A and the control signal B in the first logic unit is a low-level signal (logic 0), and the output signal of the control signal A and the control signal B in the second logic unit is a high-level signal (logic 1).

[0094] Further, in the case where the power-down power domain needs to be powered on, the control module will input a high-level signal (logic 1) to the power-down power domain 1. Correspondingly, when the output signal of each power switch chain in the power-down power domain 1 is a high-level signal (logic 1), it indicates that the power-up of the power-down power domain 1 is completed, and the corresponding first logic unit 31 will also output a high-level signal (logic 1); on the contrary, in the case where the power-down power domain needs to be powered off, the control module will input a low-level signal (logic 0) to the power-down power domain 1. Correspondingly, when the output signal of each power switch chain in the power-down power domain 1 is a low-level signal (logic 0), it indicates that the power-down of the power-down power domain 1 is completed, and the corresponding second logic unit 32 will also output a low-level signal (logic 0).

[0095] Exemplarily, if there are power switch chains A and B that need to be powered on, then when the first logic unit 31 outputs a high-level signal (logic 1), it is determined that the power-up of power switch chains A and B is completed; correspondingly, if there are power switch chains A and B that need to be powered off, then when the second logic unit 32 outputs a low-level signal (logic 0), it is determined that the power-down of power switch chains A and B is completed.

[0096] Optionally, the second input terminal of the selection unit 33 is connected to the control module 2; the selection unit 33 is configured to receive an acknowledgment signal from the first logic unit 31 or the second logic unit 32 based on the signal type and output the acknowledgment signal.

[0097] In the embodiment of the present application, the connection between the selection unit 33 and the control module 2 can identify the type of the control signal output by the control module 2. Furthermore, based on the type of the control signal, the type of the acknowledgment signal can be determined. Based on the type of the acknowledgment signal, the logic unit of the output signal to be verified can be determined. For example, if the control signal is a power-up control signal, it is necessary to make a judgment in the first logic unit 31, and it is determined that the power-up is completed when the first logic unit 31 outputs a high-level signal; on the contrary, if the control signal is a power-down control signal, it is necessary to make a judgment in the second logic unit 32, and it is determined that the power-down is completed when the second logic unit 32 outputs a low-level signal.

[0098] For this embodiment, by splitting the power switch unit into several power switch chains, the power-on and power-off speeds of the power-down power domain can be accelerated. The small-current units are sequentially chained, greatly reducing the risk of potential current change rate. If the requirement is very high, different numbers of delay units can still be selected to be inserted before each large-current unit parallel chain to stagger the delays of each chain. Outside the power-down power domain, an AND gate aggregates the confirmation signals of each parallel chain to generate a power-on completion confirmation signal, where high indicates power-on completion; an OR gate aggregates the confirmation signals of each parallel chain to generate a power-off completion confirmation signal, where low indicates power-off completion. This solution will have one control signal and two confirmation signals. A selector can be added to aggregate the power-on and power-off confirmation signals into one, and the selection signal is the control signal. When the control signal is 1, the power-on completion confirmation branch is selected, and a confirmation signal of 1 indicates power-on completion; when the control signal is 0, the power-off completion confirmation branch is selected, and a confirmation signal of 0 indicates power-off completion. Since the combinational logic is an asynchronous signal, special timing checks need to be performed on the selector input signals to ensure that unexpected signal glitches do not occur.

[0099] Compared with the current existing technologies, in this embodiment, multiple power switch chains are connected in series based on the first control line, and multiple power switch chains are connected in parallel based on the second control line. Through the first control line, the multiple power switch chains are serially controlled according to the received control signal. Through the second control line, the multiple power switch chains are parallely controlled according to the control signal, and the confirmation signal corresponding to the control signal is output, which can accelerate the power-on and power-off speeds of the power-down power domain, while reducing the risk of excessive current change rate during the power-on and power-off processes, ensuring the response time and overall performance during the power-on and power-off processes of the power-down power domain, and achieving low complexity.

[0100] This application also provides a switch control method, as Figure 3 shown, the method includes:

[0101] Step 101, based on the obtained control signal, serially control multiple power switch chains through the first control line, and parallely control multiple power switch chains through the second control line to obtain the confirmation signal corresponding to the control signal.

[0102] Optionally, the method of this embodiment further includes: determining the signal type corresponding to the confirmation signal based on the control signal; outputting the confirmation signal from the first logic unit or the second logic unit based on the signal type.

[0103] In the embodiments of the present application, the first control circuit and the second control circuit may be control circuits in a power-down power domain. Specifically, the first control circuit 11 may be a circuit that receives an input control signal, and the first control circuit 11 may be a control circuit that connects small current units in multiple power switch chains in series; correspondingly, the second control circuit 12 may be a circuit that outputs an acknowledgement signal, and the second control circuit 12 may be a control circuit that connects large current units in multiple power switch chains in parallel.

[0104] In some examples, the logic gate corresponding to the first logic unit may be an AND gate. The AND gate is one of the most basic logic gates in digital logic circuits and is used to perform binary logic multiplication operations. It determines the output signal based on the states of the input signals. Only when all inputs are at a high level (logic 1), the output of the AND gate will be at a high level; as long as one or more inputs are at a low level (logic 0), its output will be at a low level.

[0105] In some examples, the logic gate corresponding to the second logic unit may be an OR gate. The OR gate is one of the basic logic gates in digital logic circuits and is used to perform binary logic addition operations. It determines the output signal based on the states of the input signals. As long as one or more inputs are at a high level (logic 1), the output of the OR gate will be at a high level; only when all inputs are at a low level (logic 0), its output will be at a low level.

[0106] For this embodiment, the logic unit of the output signal to be tested can be determined based on the signal type of the acknowledgement signal. For example, if the control signal is a power-on control signal, it is necessary to make a judgment in the first logic unit, and determine that the power-on is completed when the first logic unit 31 outputs a high-level signal; on the contrary, if the control signal is a power-off control signal, it is necessary to make a judgment in the second logic unit, and determine that the power-off is completed when the second logic unit outputs a low-level signal.

[0107] Compared with the current existing technologies, in this embodiment, multiple power switch chains are connected in series based on the first control circuit, and multiple power switch chains are connected in parallel based on the second control circuit. Through the first control circuit, serial control of multiple power switch chains is performed according to the received control signal, and through the second control circuit, parallel control of multiple power switch chains is performed according to the control signal, and an acknowledgement signal corresponding to the control signal is output, which can accelerate the power-on and power-off speeds of the power-down power domain, and at the same time reduce the risk of excessive current change rate during the power-on and power-off processes, ensure the response time and overall performance during the power-on and power-off processes of the power-down power domain, and achieve low complexity.

[0108] Based on the above as Figure 3The method described above, correspondingly, this embodiment also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the method as described above Figure 3 as shown.

[0109] Based on such an understanding, the technical solution of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, USB flash drive, mobile hard disk, etc.), and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods of various implementation scenarios of this application.

[0110] To achieve the above purpose, this embodiment of the application also provides an electronic device including the above-mentioned Figure 1 power-down power domain as shown or the above-mentioned Figure 2 switch control system as shown.

[0111] Optionally, the above-mentioned physical device may further include a user interface, a network interface, a camera, a radio frequency (RF) circuit, sensors, an audio circuit, a WI-FI module, and so on. The user interface may include a display screen (Display), an input unit such as a keyboard (Keyboard), etc., and optionally the user interface may further include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a WI-FI interface), etc.

[0112] Those skilled in the art can understand that the above-mentioned physical device structure provided in this embodiment does not limit the physical device, and it may include more or fewer components, or combine some components, or have different component arrangements.

[0113] The storage medium may also include an operating system and a network communication module. The operating system is a program for managing the hardware and software resources of the above-mentioned physical device, and supports the operation of information processing programs and other software and / or programs. The network communication module is used to implement communication between the components inside the storage medium, and communication with other hardware and software in the information processing physical device.

[0114] Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform, or can be implemented by hardware. By applying the solution of this embodiment, compared with the current existing technologies, in this embodiment, a plurality of power switch chains are connected in series based on a first control line, and a plurality of power switch chains are connected in parallel based on a second control line. Through the first control line, the plurality of power switch chains are serially controlled according to the received control signal. Through the second control line, the plurality of power switch chains are parallely controlled according to the control signal, and an acknowledgement signal corresponding to the control signal is output, which can accelerate the power-on and power-off speed of the power-down power domain, and at the same time reduce the risk of excessive current change rate during the power-on and power-off process, ensure the response time and overall performance during the power-on and power-off process of the power-down power domain, and achieve low complexity.

[0115] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0116] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments described herein, but will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A power-off power domain, characterized in that Comprising: A first control circuit, a second control circuit, and a plurality of power switch chains; Based on the first control circuit, the plurality of power switch chains are connected in series; Based on the second control circuit, the plurality of power switch chains are connected in parallel; The first control circuit is used to serially control the plurality of power switch chains according to the received control signal, and the second control circuit is used to parallelly control the plurality of power switch chains according to the control signal and output an acknowledgement signal corresponding to the control signal.

2. The power-down power domain according to claim 1, wherein Further comprising: A delay module; Based on the first control circuit, a first input end of the plurality of power switch chains is externally connected to a control module, and a first output end of the plurality of power switch chains is connected to an input end of the delay module; Based on the second control circuit, an output end of the delay module is connected to a second input end of the plurality of power switch chains, and a second output end of the plurality of power switch chains is externally connected to a selection module. The delay module is used to perform signal delay processing on the control signal output by the first control circuit and input the processed control signal into the second control circuit.

3. The power-down power domain according to claim 2, characterized in that, The plurality of power switch chains include a first power switch chain, at least one intermediate power switch chain, and a last power switch chain; Based on the first control circuit, a first input end of the first power switch chain is externally connected to a control module, and a first output end of the first power switch chain is connected in series with the at least one intermediate power switch chain and the last power switch chain; Based on the second control circuit, a first output end of the last power switch chain is respectively connected to a second input end of each power switch chain, and a second output end of each power switch chain is externally connected to the selection module.

4. The power-down power domain according to claim 3, wherein The delay module includes a plurality of delay unit groups, each power switch chain is correspondingly configured with a delay unit group, and each delay unit group includes at least one delay unit; Based on the second control circuit, a first output end of the last power switch chain is respectively connected to a first end of each delay unit group, and a second end of each delay unit group is connected to a second input end of its corresponding power switch chain.

5. The power-down power domain according to any one of claims 1 to 4, characterized in that Each power switch chain includes a plurality of power switch units connected in series, and each power switch unit includes a first current unit and a second current unit; In each power switch chain, a plurality of first current units of the plurality of power switches are connected in series to form a first current unit switch chain in each power switch chain, and a plurality of second current units of the plurality of power switches are connected in series to form a second current unit switch chain in each power switch chain.

6. The power-down power domain according to claim 5, characterized in that Based on the first control circuit, the plurality of first current unit switch chains are connected in series; Based on the second control circuit, the plurality of second current unit switch chains are connected in parallel.

7. A switch control system, characterized in that, Comprising: A control module, a selection module, and the power-down power domain according to any one of claims 1 to 6; An input end of the power-down power domain is connected to the control module, an output end of the power-down power domain is connected to a first input end of the selection module, and a second input end of the selection module is further connected to the control module; The power-down power domain is configured to receive a control signal from the control module and serially control a plurality of power switch chains in the power-down power domain according to the control signal via a first control line; The power-down power domain is further configured to parallelly control the plurality of power switch chains according to the control signal via a second control line and output an acknowledgement signal corresponding to the control signal.

8. The switch control system according to claim 7, wherein The control module is configured to input the control signal into the power-down power domain; The selection module is configured to determine a signal type of the acknowledgement signal based on the control signal and output the acknowledgement signal according to the signal type.

9. The switch control system according to claim 8, wherein, The selection module includes a first logic unit, a second logic unit, and a selection unit; An input end of the first logic unit and an input end of the second logic unit are respectively connected to a second output end of the plurality of power switch chains, and an output end of the first logic unit and an output end of the second logic unit are respectively connected to a first input end of the selection unit; The first logic unit is configured to output a high-level acknowledgement signal when all the acknowledgement signals are high-level signals, and the second logic unit is configured to output a low-level acknowledgement signal when all the acknowledgement signals are low-level signals.

10. The switch control system according to claim 9, wherein A second input end of the selection unit is connected to the control module; The selection unit is configured to receive the acknowledgement signal from the first logic unit or the second logic unit based on the signal type and output the acknowledgement signal.

11. A switch control method, characterized in that, Comprising: Based on the obtained control signal, serially controlling a plurality of power switch chains via a first control line and parallelly controlling the plurality of power switch chains via a second control line to obtain an acknowledgement signal corresponding to the control signal.

12. The switch control method according to claim 11, characterized in that, The method further comprises: Determining a signal type corresponding to the acknowledgement signal based on the control signal; Outputting the acknowledgement signal from the first logic unit or the second logic unit based on the signal type.

13. An electronic device, characterized in that, Comprising the power-down power domain according to any one of claims 1 to 6, or the switch control system according to any one of claims 7 to 10.

14. A chip, characterized in that, Comprising the power-down power domain according to any one of claims 1 to 6, or the switch control system according to any one of claims 7 to 10.

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