CN103699504A - DDR physical layer and data processing method and device therefor - Google Patents
DDR physical layer and data processing method and device therefor Download PDFInfo
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Abstract
The invention discloses a DDR physical layer and a data processing method and device therefor. The method includes: receiving a selection signal; if the received selection signal is a first selection signal, generating a first enable control signal according to the first selection signal; if the received selected signal is a second selection signal, generating a second enable control signal according to the second selection signal; controlling a data signal, entering a DDR physical layer transport channel, to engage in unidirectional transport according to the first enable control signal; controlling the data signal, entering the DDR physical layer transport channel, to engage in bidirectional transport according to the second enable control signal. According to the method, one selection signal is received, the enable control signal is generated according to the selection signal and used to control the data signal, entering the physical layer, to transport in different ways, and accordingly the existing physical layer can be used to transport the data signal when new memory devices are added.
Description
Technical field
The present invention relates to field of computer technology, in particular to a kind of DDR physical layer data processing method, device and DDR Physical layer.
Background technology
In existing computer system, DDR(Double Data Rate, Double Data Rate synchronous DRAM) DFI(DDR PHY Interface, physical layer interface) be one and be defined as connection Memory Controller Hub and memory device (DDR1, LPDDR1, DDR2, LPDDR2, DDR3) standard agreement standard.This protocol definition relation, sequential and signal between all signals, signal how by this socket, to carry out the transmission between internal memory and Memory Controller Hub.
In prior art, Memory Controller Hub first provides address signal by address pin bus, and then select to provide read-write control signal by controlling pin, address signal and read-write control signal enter Physical layer by physical layer interface, data slot in DDR Physical layer is according to read-write control signal, receive the data-signal that Memory Controller Hub direction transmits, or return from the next data-signal of memory read back.
Problems of the prior art are: the maturing already of the physical layer interface of existing DDR and deterministic, if there is the internal memory access of new form, need new physical layer interface, existing DDR Physical layer can not complete new control and the transmission of data-signal.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of method and device of DDR transmitting data in physical layer, can, when the internal memory access that increases new form, can use existing DDR Physical layer to complete new control and transmission of data signals simultaneously.
To achieve these goals, according to an aspect of the present invention, provide a kind of DDR physical layer data processing method, described method comprises:
Receive to select signal, according to described selection signal, generate and enable control signal, according to described, enable the transmission mode that control signal is controlled the data-signal that enters DDR physical layer transmission passage;
If the described selection signal receiving is the first selection signal, according to described first, select signal to generate first and enable control signal, if the described selection signal receiving is the second selection signal, according to described second, selects signal to generate second and enable control signal;
According to described first, enabling control signal controls the data-signal enter described DDR physical layer transmission passage and carries out one-way transmission;
According to described second, enabling control signal controls the data-signal enter described DDR physical layer transmission passage and carries out transmitted in both directions.
To achieve these goals, according to a further aspect in the invention, provide a kind of DDR physical layer data treating apparatus, it is characterized in that, described device comprises:
Select module, for receiving selection signal, according to described selection signal, generate and enable control signal, according to described, enable the transmission mode that control signal is controlled the data-signal that enters DDR physical layer transmission passage;
Generation module, for judging if the described selection signal receiving is the first selection signal, according to described first, select signal to generate first and enable control signal, if the described selection signal receiving is the second selection signal, according to described second, selects signal to generate second and enable control signal;
First interface module, described first enables control signal and controls the data-signal that enters DDR physical layer transmission passage and carry out one-way transmission for what generate according to generation module;
The second interface module, described first enables control signal and controls the data-signal that enters described DDR physical layer transmission passage and carry out transmitted in both directions for what generate according to generation module.
To achieve these goals, according to a third aspect of the invention we, provide a kind of DDR Physical layer, having comprised: DDR physical layer data treating apparatus and transmission channel, described transmission channel is for transmission of data signals
Method of the present invention is selected signal by reception, according to selecting signal to generate, enable control signal, according to the transmission mode that enables control signal and control the data-signal enter DDR physical layer transmission passage, the data-signal entering in DDR Physical layer can transmit according to different modes, and then reached while increasing new memory device, can use the object of existing physical layer transmission data-signal simultaneously.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the DDR physical layer data processing method schematic flow sheet according to the embodiment of the present invention one;
Fig. 2 carries out the schematic diagram of data processing according to the first interface module of the embodiment of the present invention one;
Fig. 3 carries out the schematic diagram of data processing according to the second interface module of the embodiment of the present invention one
Fig. 4 is according to the logical transition schematic diagram of data slot in embodiment of the present invention DDR Physical layer;
Fig. 5 is according to the process flow diagram of the DDR physical layer data processing method of the embodiment of the present invention two;
Fig. 6 is the DDR physical layer data treating apparatus structural representation according to the embodiment of the present invention three;
Fig. 7 is the DDR physical layer architecture schematic diagram according to the embodiment of the present invention four.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Term " first " in instructions of the present invention and claims and above-mentioned accompanying drawing, " second " etc. are for distinguishing similar object, and needn't be for describing specific order or precedence.The data that should be appreciated that such use suitably can exchanged in situation, so that embodiments of the invention described herein can be implemented with the order those situations except here diagram or description.
Embodiment mono-
The embodiment of the present invention provides a kind of DDR physical layer data processing method, and the method flow process comprises the following steps:
101: receive to select signal, according to selecting signal to generate, enable control signal, according to the transmission mode that enables control signal and control the data-signal that enters DDR physical layer transmission passage;
102: if the selection signal receiving is the first selection signal, according to the first selection signal, generates first and enable control signal, if the selection signal receiving is the second selection signal, according to the second selection signal, generates second and enable control signal;
103: according to first, enable control signal and control the data-signal enter DDR physical layer transmission passage and carry out one-way transmission;
104: according to second, enable control signal and control the data-signal enter DDR physical layer transmission passage and carry out transmitted in both directions.
The method of the embodiment of the present invention is selected signal by reception, according to selecting signal to generate, enable control signal, according to the transmission mode that enables control signal and control the data-signal enter DDR physical layer transmission passage, the data-signal entering in DDR Physical layer can transmit according to different modes, and then reached while increasing new memory device, can use the object of existing physical layer transmission data-signal simultaneously.
Embodiment bis-
On the basis of the embodiment shown in Fig. 1, DDR physical layer data processing method of the present invention is elaborated.
In the method for the present embodiment, receive and select the selection module of signal in DDR physical layer data treating apparatus of the present invention to realize, in this selection module, first interface pattern and the second interface modes have been comprised, for selecting by which interface modes to control the transmission of the data-signal that enters DDR Physical layer, the corresponding existing physical layer interface of first interface pattern, the first interface module in DDR physical layer data treating apparatus of the present invention namely, the second interface modes correspondence newly increases physical layer interface, the second interface module in DDR physical layer data treating apparatus of the present invention namely, receiving first selects signal indication to select first interface pattern, receiving second selects signal indication to select the second interface modes.
In the method for the present embodiment, according to selecting signal generation to enable control signal, by a generation module, realized, particularly, this generation module can be a control register, when selecting module to receive the first selection signal selection first interface pattern, control register generates first according to the first selection signal and enables control signal, this first enables the data-signal that control signal makes first interface module send for receiving Memory Controller Hub or internal memory, and control data-signal and in DDR physical layer transmission passage, carry out data transmission according to the protocol specification of the second interface module regulation, when reception second selects signal to select the second interface modes, control register is according to the second selection signal, generate second and enable control signal, this second enables the data-signal that control signal makes the second interface module send for receiving Memory Controller Hub or internal memory, and controls data-signal and in DDR physical layer transmission passage, carry out data transmission according to the protocol specification of the second interface module regulation.
In the method for the present embodiment, receive the data-signal that Memory Controller Hub or internal memory send, and control the data-signal that enters DDR physical layer transmission passage and carry out one-way transmission, the first interface module in DDR physical layer data treating apparatus of the present invention realizes.
Particularly, first interface module comprises auxiliary control interface unit and data interface unit, wherein, auxiliary control interface unit is for receiving the address signal of Memory Controller Hub transmission and reading or writing control signal, the data-signal that data interface unit sends for receiving Memory Controller Hub or internal memory, and the read-write control signal receiving according to auxiliary control interface unit is controlled the transmission direction of data-signal, first interface module definition the relation between address signal and read-write control signal, sequential and how to carry out the data transmission between internal memory and Memory Controller Hub by first interface module, transmission channel in DDR Physical layer is according to the relation between the address signal of first interface module definition and read-write control signal and sequential, transmission Memory Controller Hub is to the data-signal of DDR Physical layer direction, or transmission is from the data-signal of memory-to-memory controller direction.The data of first interface module controls by this interface are transmitted in DDR physical layer transmission passage with read data or the one way system of writing data in embodiments of the present invention.
As shown in Figure 2, illustrate that first interface module realizes the process of data processing by the data slot in physical layer data processing module: first interface module comprises auxiliary control interface unit and data interface unit, wherein, auxiliary control interface unit receives address signal and reading data signal or the write data signal that Memory Controller Hub sends, data interface unit receives the data-signal of Memory Controller Hub or internal memory transmission, and the address signal receiving according to auxiliary control interface unit and write data signal are controlled the transmission direction that enters the data-signal in DDR physical layer transmission passage for from Memory Controller Hub to DDR Physical layer, the transmission direction that the address signal receiving according to auxiliary control interface unit and reading data signal control enter the data-signal in DDR physical layer transmission passage is from DDR Physical layer to Memory Controller Hub.The transmission channel of DDR Physical layer comprises: data slot 0-data slot 8.When writing data, data slot 0-3 is write data channel 0, data slot 5-8 is write data channel 1, and the transmission direction of the data-signal in write data channel 0 and write data channel 1 is all from Memory Controller Hub to DDR Physical layer.When read data, data slot 0 to the transmission direction of the data-signal in data slot 8 is all from DDR Physical layer to Memory Controller Hub.Data slot 4 is used for transmitting the identifying code of other data slots in the present embodiment.The embodiment of the present invention only be take 0-8 data slot and as example describes, is not limited the number of data slot.As shown in Figure 4, the transmission direction of the first interface module controls data-signal of selecting according to enable signal, data-signal is carried out single along data-signal and two conversion between data-signal in data slot, and data slot provides differential clocks for single along data-signal, the justified of the edge of differential clocks and two rising edge and negative edges along data-signal.
In the method for the present embodiment, receive the data-signal that Memory Controller Hub or internal memory send, and control the data-signal that enters DDR physical layer transmission passage and carry out second interface module of transmitted in both directions in DDR physical layer data treating apparatus of the present invention and realize.
Particularly, the second interface module has defined all data-signals too, relation between data-signal and sequential, and how by the second interface module, to carry out the data transmission between internal memory and Memory Controller Hub, transmission channel in DDR Physical layer is according to all data-signals of the second interface module definition, relation between data-signal and sequential, the data-signal that transmission Memory Controller Hub direction transmits, or transmit the data-signal transmitting from internal memory direction.The data-signal that in the embodiment of the present invention, the second interface module is controlled by this interface transmits in Physical layer with read data and the bidirectional mode of writing data.
As shown in Figure 3, illustrate that the second interface module carries out the process of data processing by the data slot in physical layer data processing module, the second interface module receives the address signal of Memory Controller Hub transmission and reads or writes control signal, receive the data-signal that Memory Controller Hub or internal memory send, and according to the address signal receiving and write data signal, control the transmission direction that enters the data-signal in DDR physical layer transmission passage for from Memory Controller Hub to DDR Physical layer, according to the address signal receiving and reading data signal, control the transmission direction that enters the data-signal in DDR physical layer transmission passage for from DDR Physical layer to Memory Controller Hub.Different from first interface module, read data or the process of writing data can be carried out simultaneously, in DDR physical layer transmission passage, carry out two-way data transmission.The transmission channel of DDR Physical layer comprises: data slot 0-data slot 8.When writing data, data slot 0-3 is write data channel 0, and the transmission direction of the data-signal in write data channel 0 is all from Memory Controller Hub to DDR Physical layer.When read data, data slot 5-8 is read data passage, and data slot 5 to the transmission direction of the data-signal in data slot 8 is all from DDR Physical layer to Memory Controller Hub.Address signal and read or write control signal and can transmit by data slot 4 in the present embodiment.The embodiment of the present invention only be take 0-8 data slot and as example describes, is not limited the number of data slot.As shown in Figure 4, the second interface module of selecting according to enable signal is controlled the transmission direction of data-signal, data-signal is carried out single along data-signal and two conversion between data-signal in data slot, and data slot provides differential clocks for single along data-signal, the justified of the edge of differential clocks and two rising edge and negative edges along data-signal.
Further, Memory Controller Hub sends data-signal by data bus to first interface module or the second interface module.The second interface module can multiplexing Memory Controller Hub and first interface module between data bus, avoided so extra increase data bus.
Preferably, can be with the transmission line of 64 as data bus, if Memory Controller Hub multiplexed data bus sends data-signal to the second interface module, using data bus low 32 as request bus, by asking bus transfer Memory Controller Hub to the data-signal of DDR Physical layer direction; Using data bus high 32 as response bus, by response bus, transmit the data-signal from DDR Physical layer to Memory Controller Hub direction that internal memory sends.
As shown in Figure 5, the embodiment of the present invention provides a kind of data processing method of DDR Physical layer, comprises the following steps:
501: receive and select signal;
Selecting signal can be 1 or 0, can represent to have selected first interface module to receive data-signal with 1, with 0, represents to have selected the second interface module reception data-signal.
502: it is 1 or 0 that signal is selected in judgement, if select signal, be 1, perform step 5031, if select signal, be 0, perform step 5032.
5031: according to selecting signal to generate first, enable control signal.
5041: the data-signal one-way transmission of controlling DDR physical layer transmission passage according to the first control enable signal.
5032: according to selecting signal to generate second, enable control signal:
5042: the bidirectional transmission of data signals of controlling DDR physical layer transmission passage according to the second control enable signal.
The method of the embodiment of the present invention selects first interface module or the second interface module to control the data transfer direction in DDR physical layer transmission passage by the selection signal receiving, make DDR physical layer data treating apparatus to realize data transmission according to original data transfer direction, again can be when occurring new equipment connection at this DDR physical layer data treating apparatus, according to new data transfer direction, realize data transmission, therefore, can be when not changing the structure of original DDR physical layer transmission passage and data process method, meet the logical process of equipment and the requirement of data transmission of new access, solved while increasing new equipment in prior art, the problem that cannot utilize original DDR Physical layer to carry out data transmission and processing, and then reached the effect that can use existing physical layer transmission data-signal when increasing new interface.
Embodiment tri-
The embodiment of the present invention provides a kind of DDR physical layer data treating apparatus.Fig. 6 is according to the schematic diagram of the data processing equipment of the DDR Physical layer of the embodiment of the present invention.As shown in the figure, this data processing equipment comprises:
Select module 601, for receiving selection signal;
The second interface module 604, first enables control signal and controls the data-signal that enters DDR physical layer transmission passage and carry out transmitted in both directions for what generate according to generation module.
Further, select module to comprise first interface pattern and the second interface modes, for selecting by which interface modes to control the transmission of the data-signal that enters DDR Physical layer, the corresponding existing physical layer interface of first interface pattern.
Further, first interface module comprises: auxiliary control interface unit and data interface unit, wherein, auxiliary control interface unit is for receiving the address signal of Memory Controller Hub transmission and reading or writing control signal, data interface unit is for receiving the data-signal that enters DDR physical layer transmission passage, and the control signal control data-signal that reads or writes receiving according to auxiliary control interface unit carries out one-way transmission.
Further, the second interface module specifically for:
Receive address signal that Memory Controller Hub provides, read or write control signal and enter the data-signal of DDR Physical layer; According to the address signal receiving with read or write control signal and control the data-signal that enters DDR physical layer transmission passage and carry out read and write transmitted in both directions simultaneously.
Further, above-mentioned the second interface module, comprising:
First controls subelement, and the data-signal that enters DDR Physical layer the first transmission channel for controlling according to the address signal receiving and read control signal fixedly carries out the transmission of read data direction;
Second controls subelement, and the data-signal that enters DDR Physical layer the second transmission channel for controlling according to the address signal receiving and write control signal is fixedly write the transmission of data direction.
The device of the embodiment of the present invention is by selecting the selection signal of module reception to select first interface module or the second interface module to control the data transfer direction in DDR physical layer transmission passage, make DDR physical layer data treating apparatus to realize data transmission according to original data transfer direction, again can be when occurring new equipment connection at this DDR physical layer data treating apparatus, according to new data transfer direction, realize data transmission, therefore, only just can be when not changing the structure of original DDR physical layer data treating apparatus and data process method by first interface module and the second interface module, meet the logical process of equipment and the requirement of data transmission of new access, solved while increasing new equipment in prior art, the problem that cannot utilize original DDR Physical layer to carry out data transmission and processing, and then reached the effect that can use existing physical layer transmission data-signal when increasing new interface.
Embodiment tetra-
The present invention also provides a kind of DDR Physical layer, as shown in Figure 7, this DDR Physical layer comprises: DDR physical layer data treating apparatus 701 and transmission channel 702, DDR physical layer data treating apparatus is for the step of the DDR physical layer data processing method carrying out embodiment mono-and embodiment bis-and provide, and transmission channel is for transmission of data signals.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a DDR physical layer data processing method, is characterized in that, described method comprises:
Receive to select signal, according to described selection signal, generate and enable control signal, according to described, enable the transmission mode that control signal is controlled the data-signal that enters DDR physical layer transmission passage;
If the described selection signal receiving is the first selection signal, according to described first, select signal to generate first and enable control signal, if the described selection signal receiving is the second selection signal, according to described second, selects signal to generate second and enable control signal;
According to described first, enabling control signal controls the data-signal enter described DDR physical layer transmission passage and carries out one-way transmission;
According to described second, enabling control signal controls the data-signal enter described DDR physical layer transmission passage and carries out transmitted in both directions.
2. method according to claim 1, is characterized in that, describedly according to described first, enables control signal and controls the data-signal enter data transmission channel and carry out one-way transmission, comprising:
Receive the address signal that Memory Controller Hub provides and read or write control signal;
Reception enters the data-signal of DDR physical layer transmission passage, and according to the described address signal of described reception with read or write control signal and control the data-signal enter DDR physical layer transmission passage and carry out read data or write data one-way transmission.
3. method according to claim 1, is characterized in that, enables control signal described in described basis and controls the data-signal that enters described DDR physical layer transmission passage and carry out transmitted in both directions, comprising:
Receive address signal that Memory Controller Hub provides, read or write control signal and enter the data-signal of DDR physical layer transmission passage;
According to the described address signal of described reception with read or write control signal and control the data-signal enter DDR physical layer transmission passage and carry out read data and write data double-way transmission simultaneously.
4. method according to claim 3, is characterized in that, described according to the described address signal of described reception with read or write control signal and control the data-signal enter DDR physical layer transmission passage and carry out read data and write data double-way transmission simultaneously, comprising:
According to the described address signal of described reception and read control signal, control the data-signal that enters DDR Physical layer the first transmission channel and fixedly carry out the transmission of read data direction;
According to the described address signal of described reception and write control signal, control the transmission that the data-signal that enters DDR Physical layer the second transmission channel is fixedly write data direction.
5. a DDR physical layer data treating apparatus, is characterized in that, described device comprises:
Select module, for receiving selection signal;
Generation module, for generating and enable control signal according to described selection signal, according to described, enable the transmission mode that control signal is controlled the data-signal enter DDR physical layer transmission passage, if the described selection signal receiving is the first selection signal, according to described first, select signal to generate first and enable control signal, if the described selection signal receiving is the second selection signal, according to described second, selects signal to generate second and enable control signal;
First interface module, described first enables control signal and controls the data-signal that enters DDR physical layer transmission passage and carry out one-way transmission for what generate according to generation module;
The second interface module, described first enables control signal and controls the data-signal that enters described DDR physical layer transmission passage and carry out transmitted in both directions for what generate according to generation module.
6. device according to claim 5, is characterized in that, described first interface module, comprising:
Auxiliary control interface unit, for receiving the address signal that Memory Controller Hub provides and reading or writing control signal;
Data interface unit, for receiving the data-signal that enters DDR physical layer transmission passage, and according to the described address signal of described reception with read or write control signal and control the data-signal that enters DDR physical layer transmission passage and carry out read data or write data one-way transmission.
7. device according to claim 5, is characterized in that, described the second interface module, specifically for:
Receive address signal that Memory Controller Hub provides, read or write control signal and enter the data-signal of DDR Physical layer; According to the described address signal of described reception with read or write control signal and control the data-signal enter DDR physical layer transmission passage and carry out read data and write data double-way transmission simultaneously.
8. device according to claim 7, is characterized in that, described the second interface module, comprising:
First controls subelement, and the data-signal that enters DDR Physical layer the first transmission channel for controlling according to the described address signal of described reception and read control signal fixedly carries out the transmission of read data direction;
Second controls subelement, and the data-signal that enters DDR Physical layer the second transmission channel for controlling according to the described address signal of described reception and write control signal is fixedly write the transmission of data direction.
9. a DDR Physical layer, is characterized in that, comprising: DDR physical layer data treating apparatus and transmission channel as described in claim 5-8 any one, described transmission channel is for transmission of data signals.
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Address after: 100095 Building 2, Longxin Industrial Park, Zhongguancun environmental protection technology demonstration park, Haidian District, Beijing Patentee after: Loongson Zhongke Technology Co.,Ltd. Address before: 100095 Building 2, Longxin Industrial Park, Zhongguancun environmental protection technology demonstration park, Haidian District, Beijing Patentee before: LOONGSON TECHNOLOGY Corp.,Ltd. |
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