CN116719486B - Multimode storage device with built-in data automatic transmission function and control method - Google Patents
Multimode storage device with built-in data automatic transmission function and control method Download PDFInfo
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0604—Improving or facilitating administration, e.g. storage management
- G06F3/0607—Improving or facilitating administration, e.g. storage management by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
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Abstract
The invention provides a multimode storage device with built-in data automatic transmission function and a control method, wherein the multimode storage device comprises a multimode storage manager and a multimode storage unit; the multimode storage manager comprises an external interface unit, a central control unit and a storage control unit; the central control unit comprises an address analysis module, a control center and a data transmission module; the storage control unit is provided with a plurality of interfaces; the multimode memory unit comprises at least one nonvolatile memory unit and at least one volatile memory unit, wherein the nonvolatile memory unit and the volatile memory unit are respectively connected to different interfaces in the memory control unit, and the address ranges of the nonvolatile memory unit and the volatile memory unit in the address resolution of the central control unit are not overlapped. The memory unit is divided through different address mapping, and the memory unit automatically analyzes according to the address of data transmission, so that the control logic is simplified, the pin number and the packaging volume are reduced, and the power consumption is reduced.
Description
Technical Field
The invention relates to the field of memory control chips, which can be compatible with multiple modes of memory units, has an automatic data transmission function, and is suitable for the data storage requirement of an embedded system.
Background
And a storage device matched with the operation chip in the electronic system provides an information storage function. The physical mechanism of information storage has multiple modes (types), and a storage device with one mode is usually packaged into a chip for use, namely a popular storage chip. The primary storage devices can be categorized into volatile storage (e.g., SRAM, DRAM) and nonvolatile storage (e.g., ROM, FLASH) according to whether the stored data is lost after a power outage.
Due to the rapid development of information technology and intelligent equipment, embedded electronic systems are widely applied to electronic products with more and more varieties and numbers and stronger functions. These electronic systems generally require a nonvolatile memory device (e.g., FLASH) for storing static data and a volatile memory device (e.g., DRAM) for storing dynamic data. Currently, these two types of memory devices are generally separated in function and operate independently, for example, a FLASH device provides a nonvolatile memory function and a DRAM device provides a volatile memory function. In addition to the data storage array composed of regular memory units, the memory devices of various types have additional control logic to perform address decoding, read/write operations, specific interface protocol implementation, and other functions, and external interfaces for communication with external devices. The control logic and the external interfaces of the plurality of independent storage devices are independent, and unified optimization and multiplexing cannot be performed.
In addition, the arithmetic chip using the multi-mode memory device needs to be physically connected to different memory devices through different circuit interfaces, and further needs to perform different operations such as reading and writing through different protocols for different memory devices. This results in a considerable number of pins of the operation chip to connect various memory devices, and also requires a relatively complex hardware circuit and software to use the various memory devices, and accordingly, the operation overhead and power consumption are high.
Integration of multi-mode storage is currently occurring, wherein one implementation mode of mass production products on the market is to package a plurality of storage grains (Die) into a shell by adopting a multi-chip package (MCP: multiple Chip Package) technology, and the external appearance is a multi-mode storage chip. Referring to fig. 1, the chip encapsulates two types of memory dies, FLASH and pSRAM. Although the scheme realizes integration of multimode storage formally, a plurality of defects still exist:
1. in the scheme, the various storage units are still separated in function and independently operate. For example, in fig. 1, the FLASH die and the pSRAM die encapsulated in a housing are independent of each other, and the control logic of the two is not integrated and optimized uniformly;
2. the various memory units still need respective external interfaces to communicate with external equipment, which leads to a large number of pins of the chip and affects the packaging volume;
3. the various storage units cannot communicate with each other, so that the various storage units cannot directly transmit data, and data transfer must be performed through external equipment;
4. the two storage units are used in an actual scene, the FLASH is used with higher intensity when the system is started and closed, and other time periods are smaller; in contrast, pSRAM is used more frequently during system operation. This means that multiple sets of external interfaces corresponding to different memory cells are used at different times with little opportunity for simultaneous use, which results in wasted external interfaces and pins being left unused.
Still other techniques for integrating multi-mode storage are presented. For example: chinese patent CN101473438B proposes a hybrid memory device and method with a single interface, in which different modes of memory are contained in a hybrid memory device, such as FLASH and SDRAM, the external interface of the memory device is an interface employing one of the memories, the top-level controller determines which memory the command received on the interface is for, and then transfers it to the corresponding memory; the different memories within the storage device are independently operated, e.g. the controllers they need are independent. Chinese patent CN107656700B proposes a FLASH-DRAM hybrid memory module, mainly for integrating different memory chips in an electronic system, instead of packaging different memory devices in a chip, and the different memory devices need to be equipped with respective independent controllers. The semiconductor memory device in the information processing apparatus proposed in US9524121B2 includes a purpose and application of multi-mode storage in which volatile memory RAM is used as a cache of nonvolatile memory FLASH when writing data. The coupling degree between each storage unit in the above products and technologies is low, the storage units basically work independently, the top logic has the main function of selecting one storage unit to execute corresponding operation according to a command, for example, unified storage control logic is not adopted so as to be integrally coordinated and optimized, and the selection of different storage units and the data transmission mode are inflexible, so that the data transmission efficiency in part of application scenes is low.
In many electronic systems, the operation chip is mainly in communication with the volatile memory device, and the access time to the nonvolatile memory device is specific and infrequent. In many applications, the access of the operation chip to the nonvolatile memory device is mainly to move data from the nonvolatile memory device to the volatile memory device or vice versa. In the process of data transfer, the current scheme needs an operation chip to transfer data, namely: data of one memory device is transmitted to the operation chip through an interface circuit between the memory device and the operation chip, and then transmitted to the corresponding memory device through an interface circuit between the operation chip and another memory device. This results in considerable costs for power consumption, operating overhead, etc. of the electronic system. The multiple sets of interface circuits between the compute chip and the different memory banks are not used at the same time most of the time, and multiple independent sets of interface circuits require considerable pin overhead and power consumption, and their bandwidth is severely wasted.
Disclosure of Invention
The invention aims to solve the problems of the prior products and technologies, and provides a multimode storage device with a built-in data automatic transmission function and a control method thereof, which can optimize logic of the multimode storage device, reduce pins and power consumption, and improve data transmission efficiency; on the other hand, for the user of the storage device, the invention can reduce the complexity of hardware and software required by using the storage device, reduce pins for connecting the storage device, and reduce power consumption and operation cost.
In order to achieve the above object, the present invention provides a multimode storage device with an automatic data transmission function, comprising a multimode storage manager and a multimode storage unit connected with the multimode storage manager; the multimode storage manager comprises an external interface unit, a central control unit and a storage control unit; the external interface unit communicates with external equipment through an external interface; the central control unit comprises an address resolution, a control center and a data transmission module, wherein the address resolution is used for identifying different addresses and mapping operations to corresponding storage units in the multimode storage units; the control center controls the data transmission module to transmit the data of one party of the external equipment and the multimode storage unit to the other party or parties, so that the data source can send out the data once and can be distributed to a plurality of data destinations; the storage control unit is provided with a plurality of interfaces; the multimode storage unit comprises at least one nonvolatile storage unit and at least one volatile storage unit, wherein the nonvolatile storage unit and the volatile storage unit are respectively connected to different interfaces in the storage control unit, and the address ranges of the nonvolatile storage unit and the volatile storage unit in the address resolution of the central control unit are not overlapped.
Preferably, the external interfaces comprise a master external interface and an extension external interface; the external interface is an xSPI protocol interface or an SD protocol interface. The xSPI protocol interface adopts JESD251 protocol interface.
Preferably, the multimode memory unit further comprises at least one expansion memory unit, the expansion memory unit is connected to an interface different from the nonvolatile memory unit and the volatile memory unit in the memory control unit, and the expansion memory unit is not overlapped with the nonvolatile memory unit and the volatile memory unit in address resolution of the central control unit.
Preferably, the number of the nonvolatile memory units is 1 to 3, the number of the volatile memory units is 1 to 3, and the number of the expansion memory units is 0 to 3 or 1 to 3.
In order to achieve the above purpose, the present invention also provides a multimode storage control method with a built-in data automatic transmission function, the method relates to a multimode storage manager and a multimode storage unit connected with the multimode storage manager, the multimode storage manager comprises an external interface unit, a central control unit and a storage control unit, and the external interface unit communicates with external equipment through an external interface; the central control unit comprises an address resolution, a control center and a data transmission module, wherein the address resolution is used for identifying different addresses and mapping operations to corresponding storage units in the multimode storage units; the control center controls the data transmission module to transmit the data of one party of the external equipment and the multimode storage unit to the other party or parties, so that the data source can send out the data once and can be distributed to a plurality of data destinations; the storage control unit integrates control logic required by the multimode storage unit and is provided with a plurality of interfaces; the multimode storage unit comprises at least one nonvolatile storage unit and at least one volatile storage unit, wherein the nonvolatile storage unit and the volatile storage unit are respectively connected to different interfaces in the storage control unit and respectively mapped to non-overlapping address ranges in the central control unit; and each storage unit of the multimode storage units is in data communication with external equipment through the multimode storage manager and the external interface of the external interface unit.
Preferably, the external interfaces comprise a master external interface and an extension external interface; the external interface is an xSPI protocol interface or an SD protocol interface. The xSPI protocol interface adopts JESD251 protocol interface.
Preferably, the multimode memory unit further comprises at least one expansion memory unit, the expansion memory unit is connected to an interface different from the nonvolatile memory unit and the volatile memory unit in the memory control unit, and the expansion memory unit is not overlapped with the nonvolatile memory unit and the volatile memory unit in address resolution of the central control unit.
Preferably, the number of the nonvolatile memory units is 1 to 3, the number of the volatile memory units is 1 to 3, and the number of the expansion memory units is 0 to 3 or 1 to 3.
Preferably, the multimode storage manager invokes a pre-stored program or receives a real-time instruction from an external device, one data source sends out data once, the data source comprises each storage unit in the multimode storage unit and the external device, the control center and the data transmission module transmit the data to one or more data destinations, and the data destinations comprise each storage unit in the multimode storage unit and the external device.
Preferably, the pre-stored program is a program stored in a multi-mode storage manager, a nonvolatile storage unit, or an expansion storage unit.
The invention has the beneficial effects that: the storage device integrates a storage manager and storage units with multiple modes in one device, and is internally provided with a control system; the storage units are divided through different address mapping, no special storage unit selection signal is input by external equipment, and the corresponding storage units are automatically selected according to the address automatic analysis of data transmission; the multimode storage unit adopts a unified storage control unit, so that control logic is simplified; the multimode storage device adopts a uniform external interface to communicate with external equipment, so that pins of the storage device and a user thereof are reduced, the packaging volume is reduced, and the miniaturization and low power consumption of the electronic equipment are facilitated; the storage manager is internally provided with a data automatic transmission function, so that the operation cost of external equipment for data transmission is saved, the transmission efficiency is improved, and the power consumption of an electronic system is reduced; the invention has various application scenes and can be widely applied to intelligent door locks, intelligent sound boxes, floor sweeping machines, intelligent monitoring, automobile electronics, wireless headphones, industrial equipment and the like.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
Drawings
FIG. 1 is a logic diagram of a conventional multimode memory chip;
FIG. 2 is a logic diagram of a multi-mode memory device with an automatic data transfer function according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating address resolution of a multi-mode memory device with an automatic data transfer function according to the present invention;
FIG. 4 is a schematic diagram showing internal data transmission performed by the multimode memory device with an automatic data transmission function according to a pre-stored program;
FIG. 5 is a schematic diagram showing the data transmission of a multimode memory device with an automatic data transmission function according to an external device command;
FIG. 6 is a schematic diagram of a multi-mode memory device with built-in data automatic transfer function of the present invention for writing data from an external device into a plurality of memory cells;
FIG. 7 is a logic diagram of a multi-mode memory device with an automatic data transfer function according to a sixth embodiment of the present invention.
Detailed Description
Embodiment one:
referring to fig. 2 and 3, a multimode storage device with an automatic data transmission function comprises a multimode storage manager and a multimode storage unit connected with the multimode storage manager; the multimode storage manager comprises an external interface unit, a central control unit and a storage control unit; the external interface unit communicates with external equipment through an external interface; the central control unit comprises an address resolution, a control center and a data transmission module, wherein the address resolution is used for identifying different addresses and mapping operations to corresponding storage units in the multimode storage units; the control center controls the data transmission module to transmit the data of one party of the external equipment and the multimode storage unit to the other party or parties, so that the data source can send out the data once and can be distributed to a plurality of data destinations; the storage control unit is provided with a plurality of interfaces; the multimode storage unit comprises at least one nonvolatile storage unit, at least one volatile storage unit and at least one expansion storage unit, wherein the nonvolatile storage unit, the volatile storage unit and the expansion storage unit are respectively connected to different interfaces in the storage control unit, the nonvolatile storage unit, the volatile storage unit and the expansion storage unit are respectively mapped to different address ranges in the central control unit, and the address ranges of data in the nonvolatile storage unit, data in the volatile storage unit and data in the expansion storage unit in an address resolution module of the central control unit are all not overlapped. Because different memory units communicate with external equipment in different time periods, the external interface can improve the service efficiency of the interface by a time-sharing multiplexing method, and meanwhile, the number of pins is reduced, so that the overall power consumption and the overall volume are reduced. The external interface may be an xSPI protocol interface (using JESD251 protocol) or an SD protocol interface.
The multimode storage manager comprises a module for performing error checking and correction on the data and disabling a specific storage area according to the data checking result; a module that includes an allocation of appropriate data storage areas based on optimization of memory life; includes a module that receives external device commands and causes the multi-mode memory manager and the multi-mode memory unit to enter or exit a low power consumption mode.
The method relates to a multimode storage manager and a multimode storage unit connected with the multimode storage manager, wherein the multimode storage manager comprises an external interface unit, a central control unit and a storage control unit, and the external interface unit is communicated with external equipment through an external interface; the central control unit comprises an address resolution, a control center and a data transmission module, wherein the address resolution is used for identifying different addresses and mapping operations to corresponding storage units in the multimode storage units; the control center controls the data transmission module to transmit the data of one party of the external equipment and the multimode storage unit to the other party or parties, so that the data source can send out the data once and can be distributed to a plurality of data destinations; the storage control unit integrates control logic required by the multimode storage unit and is provided with a plurality of interfaces; the multimode storage unit comprises at least one nonvolatile storage unit and at least one volatile storage unit, wherein the nonvolatile storage unit and the volatile storage unit are respectively connected to different interfaces in the storage control unit and respectively mapped to non-overlapping address ranges in the central control unit; the memory units (the memory units are nonvolatile memory units, volatile memory units and expansion memory units) of the multimode memory unit are in data communication with each other in the device through the multimode memory manager, and are in data communication with external equipment through an external interface of the external interface unit. The multimode storage manager invokes a pre-stored program or receives a real-time instruction from an external device, one data source sends out data once, the data source comprises each storage unit in the multimode storage unit and the external device, the control center and the data transmission module transmit the data to one or more data destinations, and the data destinations comprise each storage unit in the multimode storage unit and the external device. The pre-stored program is a program stored in the multi-mode storage manager, the nonvolatile storage unit, or the expansion storage unit.
In this embodiment, the number of nonvolatile memory cells is 2, the number of volatile memory cells is 2, and the number of expansion memory cells is 1. The control logic of the multi-mode storage unit is integrated in one storage control unit, and the data automatic transmission function is supported for automatically carrying the data in the storage device, so that the control logic is simplified, the number of pins is reduced, the power consumption is reduced, and meanwhile, the data transmission efficiency is improved.
Referring to fig. 3, the device is mainly composed of a single multimode storage manager and a multimode storage unit, wherein the multimode storage manager comprises an external interface unit, a central control unit and a storage control unit; the central control unit is respectively connected with the external interface unit and the storage control unit and comprises a control center and an address resolution module; the single storage control unit integrates control logic required by each storage unit, and can be conveniently and efficiently optimized as a whole. Because the single storage control unit integrates the control logic of each storage device, each storage unit can be divided through different address mapping, when external equipment is accessed, all storage units are regarded as a whole storage unit, and different storage units only have different addresses, so that the access of the external equipment is simplified. For example: a multimode memory device containing both 1Gb capacity FLASH and 512Mb capacity DRAM, external access addresses 0x00000000 to 0x07FFFFFF correspond to FLASH, addresses 0x08000000 to 0x0BFFFFF correspond to DRAM, and the distinction of different memory devices can be completed only by the addresses without adding memory cell selection signals or identification instructions.
Referring to fig. 4, internal data transmission is performed according to a pre-stored program. The data transmission process comprises the following steps:
(1) the storage device reads a program, for example, a program stored in a nonvolatile memory unit (such as FLASH);
(2) the control center generates and executes a plurality of tasks of the data transmission queue according to the program, and performs data transmission among the corresponding storage units. For example, blocks of data in a nonvolatile memory unit (e.g., FLASH) are transferred to a volatile memory unit.
When a typical application scenario of the process, such as an electronic system, is started, the system needs to transfer programs and data in FLASH to DRAM. The storage device does not need intervention of external equipment in the process, and can greatly reduce the system starting time and the burden of an interface between the external equipment and the storage device, thereby reducing the overall power consumption of the system and the cost of software and hardware required by the external equipment for the operations.
Referring to fig. 5, data transmission is performed according to an external device instruction. The data transmission process comprises the following steps:
(1) the external equipment sends an instruction to the storage device through an external interface, and the storage device is required to perform data transmission;
(2) and the control center generates and executes a plurality of tasks of the data transmission queue according to the received instruction, and performs data transmission among the corresponding storage units.
In the data transmission process, the external equipment only needs to send instructions, and no intervention data transmission operation is needed.
Typical application scenarios, such as neural network computation, require that feature parameter data stored in a nonvolatile memory unit (e.g., FLASH) be transferred to a volatile memory unit (e.g., DRAM) for neural network computation.
Referring to fig. 6, the storage device provided by the present invention supports writing data from an external device into a plurality of storage units. The process comprises the following steps:
(1) the data transmission module receives data from external equipment through an external interface;
(2) the data in the data transmission module is written into two or more memory units at the same time.
The function can be widely used for FLUSH operation of an electronic system, and mainly performs data update on a volatile memory unit (such as DRAM) and a nonvolatile memory unit (such as FLASH) simultaneously. The function improves the storage access efficiency, and simultaneously ensures that data cannot be lost due to the fact that the data is not stored in a nonvolatile storage unit (such as FLASH) in time due to power failure.
Embodiment two:
the multimode storage device with the built-in data automatic transmission function comprises a multimode storage manager and a multimode storage unit connected with the multimode storage manager, wherein the multimode storage manager comprises an external interface unit, a central control unit and a storage control unit, control logic required by different storage devices is integrated in the storage control unit, a plurality of interfaces are arranged in the storage control unit, an address analysis module is arranged in the central control unit, and the address analysis module can identify different addresses; the multimode storage unit comprises at least one nonvolatile storage unit and at least one volatile storage unit, wherein the nonvolatile storage unit and the volatile storage unit are respectively connected to different interfaces in the storage control unit, the nonvolatile storage unit and the volatile storage unit are respectively mapped to different address ranges in the central control unit, and the address ranges of the data of the nonvolatile storage unit and the address ranges of the data of the volatile storage unit in the address resolution module of the central control unit are not overlapped. In this embodiment, only nonvolatile memory cells and volatile memory cells are provided, and no expansion memory device is provided. The number of nonvolatile memory cells is 3, and the number of volatile memory cells is 3. The external interface unit communicates with an external device through an external interface, and the external interface can be an xSPI protocol interface (JESD 251 protocol is adopted).
Embodiment III:
in this embodiment, the multimode memory unit includes nonvolatile memory units, volatile memory units, and expansion memory units, where the number of nonvolatile memory units is 1, the number of volatile memory units is 1, and the number of expansion memory units is 1. The external interface may be an xSPI protocol interface (using JESD251 protocol).
Embodiment four:
in this embodiment, the multimode memory unit includes nonvolatile memory units, volatile memory units, and expansion memory units, where the number of nonvolatile memory units is 2, the number of volatile memory units is 1, and the number of expansion memory units is 1. The external interface may be an SD protocol interface.
Fifth embodiment:
in this embodiment, the multimode memory unit includes nonvolatile memory units, volatile memory units, and expansion memory units, where the number of nonvolatile memory units is 1, the number of volatile memory units is 2, and the number of expansion memory units is 1. The external interface may be an SD protocol interface.
Example six:
referring to fig. 7, in this embodiment, the external interface unit may connect the main control external device (such as a CPU) and the extension external device (such as a camera) at the same time, and interface multiple external devices to realize more functions.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (6)
1. A multimode storage device with built-in data automatic transmission function is characterized in that: the system comprises a multimode storage manager and a multimode storage unit connected with the multimode storage manager; the multimode storage manager comprises an external interface unit, a central control unit and a storage control unit; the external interface unit communicates with external equipment through an external interface; the central control unit comprises an address resolution, a control center and a data transmission module, wherein the address resolution is used for identifying different addresses and mapping operations to corresponding storage units in the multimode storage units; the control center controls the data transmission module to transmit the data of one party of the external equipment and the multimode storage unit to the other party or parties, so that the data source can send out the data once and can be distributed to a plurality of data destinations; the storage control unit is provided with a plurality of interfaces; the multimode storage unit comprises at least one nonvolatile storage unit and at least one volatile storage unit, wherein the nonvolatile storage unit and the volatile storage unit are respectively connected to different interfaces in the storage control unit, and the address ranges of the nonvolatile storage unit and the volatile storage unit in the address resolution of the central control unit are not overlapped; the multimode memory unit also comprises at least one expansion memory unit, wherein the expansion memory unit is connected to an interface different from the nonvolatile memory unit and the volatile memory unit in the memory control unit, and the address ranges of the expansion memory unit, the nonvolatile memory unit and the volatile memory unit in the address resolution of the central control unit are not overlapped.
2. The multi-mode storage device with built-in data automatic transmission function according to claim 1, wherein: the external interface comprises a main control external interface and an expansion external interface; the external interface is an xSPI protocol interface or an SD protocol interface.
3. The multi-mode storage device with built-in data automatic transmission function according to claim 1, wherein: the number of the nonvolatile memory units is 1-3, the number of the volatile memory units is 1-3, and the number of the expansion memory units is 1-3.
4. A multimode storage control method with built-in data automatic transmission function is characterized in that: the method relates to a multimode storage manager and a multimode storage unit connected with the multimode storage manager, wherein the multimode storage manager comprises an external interface unit, a central control unit and a storage control unit, and the external interface unit is communicated with external equipment through an external interface; the central control unit comprises an address resolution, a control center and a data transmission module, wherein the address resolution is used for identifying different addresses and mapping operations to corresponding storage units in the multimode storage units; the control center controls the data transmission module to transmit the data of one party of the external equipment and the multimode storage unit to the other party or parties, so that the data source can send out the data once and can be distributed to a plurality of data destinations; the storage control unit integrates control logic required by the multimode storage unit and is provided with a plurality of interfaces; the multimode storage unit comprises at least one nonvolatile storage unit and at least one volatile storage unit, wherein the nonvolatile storage unit and the volatile storage unit are respectively connected to different interfaces in the storage control unit and respectively mapped to non-overlapping address ranges in the central control unit; the storage units of the multimode storage units are in data communication through the multimode storage manager, and are in data communication with external equipment through an external interface of the external interface unit; the multimode storage unit also comprises at least one expansion storage unit, wherein the expansion storage unit is connected to an interface different from the nonvolatile storage unit and the volatile storage unit in the storage control unit, and the address ranges of the expansion storage unit, the nonvolatile storage unit and the volatile storage unit in the address resolution of the central control unit are not overlapped; the multimode storage manager invokes a pre-stored program or receives a real-time instruction from an external device, one data source sends out data once, the data source comprises storage units in multimode storage units and the external device, a control center and a data transmission module transmit the data to one or more data destinations, and the data destinations comprise the storage units in the multimode storage units and the external device; the pre-stored program is a program stored in the multi-mode storage manager, the nonvolatile storage unit, or the expansion storage unit.
5. The multi-mode storage control method of an automatic transmission function of built-in data according to claim 4, wherein: the external interface comprises a main control external interface and an expansion external interface; the external interface is an xSPI protocol interface or an SD protocol interface.
6. The multi-mode storage control method of an automatic transmission function of built-in data according to claim 5, wherein: the number of the nonvolatile memory units is 1-3, the number of the volatile memory units is 1-3, and the number of the expansion memory units is 1-3.
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