CN102981992A - On-chip communication method and device of integrated circuit based on asynchronous structure - Google Patents
On-chip communication method and device of integrated circuit based on asynchronous structure Download PDFInfo
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- CN102981992A CN102981992A CN2012104951933A CN201210495193A CN102981992A CN 102981992 A CN102981992 A CN 102981992A CN 2012104951933 A CN2012104951933 A CN 2012104951933A CN 201210495193 A CN201210495193 A CN 201210495193A CN 102981992 A CN102981992 A CN 102981992A
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Abstract
The invention discloses an on-chip communication method and an on-chip communication device of an integrated circuit based on an asynchronous structure. The structure comprises the following steps of 1, directly connecting main equipment to each auxiliary equipment request interface by a request bus in advance, sequentially and serially connecting a plurality of auxiliary equipment response interfaces to form an auxiliary equipment response chain in advance, and connecting the auxiliary equipment response interface on the head of the auxiliary equipment response chain with a main equipment response interface; and 2, when the main equipment communicates with the auxiliary equipment, receiving a request message consisting of a plurality of micro-packets from the main equipment by the auxiliary equipment through the request bus, and sending a response message consisting of the micro-packets to the main equipment by the auxiliary equipment through the auxiliary equipment response chain. The device comprises the main equipment and the auxiliary equipment, wherein the main equipment is directly connected with each auxiliary equipment through the request bus, the auxiliary equipment are sequentially and serially connected to form the auxiliary equipment response chain, and the auxiliary equipment on the head of the auxiliary equipment response chain is connected with the main equipment. The method and the device have the advantages that the number of long signal lines is little, the occupation of hardware resources is little, and the expandability is good.
Description
Technical field
The present invention relates to the chip-on communication field of integrated circuit SOC chip, be specifically related to a kind of based on the means of communication and device on the integrated circuit chip of asynchronous structure.
Background technology
Rapid raising along with scale and the design complexities of integrated circuit SOC chip, the research of SOC on-chip bus structure causes people's attention day by day, and developed multiple on-chip bus, such as AMBA, CoreConnect etc., these buses all belong to the synchronous bus type, have high bandwidth, the low advantage that postpones, but require the equipment on the bus to belong to same clock zone, and the interconnection line number of this class bus is numerous, takies more hardware resource.Yet in integrated circuit, some parts does not need access interface at a high speed, and more is concerned about the easy implementation that takies and design that reduces hardware resource.A plurality of IP parts and self-defined parts with independent clock system of Chang Jicheng in the SOC chip for example, each parts generally has control and the status register of some, usually need system initialization or online the observation, there are in addition some slow devices such as UART interface, 12C interface etc. also to have the register of some, need online read-write.Access this class register, generally do not need very high read or write speed, if be that each parts is set up independent order wire or used and connects at a high speed bus (such as AXI bus, PLB bus etc.) for accessing this type of register, then need to use a large amount of interconnection lines and configuration to stride the clock modular converter, this will certainly serious waste chip area and wiring channel resource, and increases chip power-consumption.
For satisfying the demand, IBM Corporation has proposed to use the method for the interior register of DCR bus structure access component and slow devices register, these DCR bus structure adopt the asynchronous handshake mechanics of communication, primary and secondary structure, can realize in the main equipment access different clock-domains from equipment, support simultaneously subordinate devices cascaded.As shown in Figure 1, comprise a main equipment and a plurality of from equipment in the daisy chain type DCR bus of prior art, a plurality of between equipment cascade connect (only drawn for convenience of description the figure from equipment 1, from equipment 2, from equipment 3 totally 3 from equipment, from equipment 1, from equipment 2, from cascade connection between the equipment 3), the advantage of this bus is to support to connect from the equipment room cascade, for the expansion equipment interface provides convenience.But, because when a plurality of when carrying out cascade from equipment, must arrange respectively main equipment and each address bus and data bus structure from equipment, the interconnection line number is more, therefore occupy a large amount of interconnection resources, the temporal constraint difficulty when having increased physics realization in the time of physics realization must being caused along with the increase from number of devices.In addition, the daisy chain type DCR bus of prior art only supports main equipment to sending read-write requests from equipment, and does not support to cause the DCR bus can't support to interrupt the transmission of message from equipment Active report mechanism, and this makes the range of application of DCR bus be restricted undoubtedly.
In sum, there is following problems in daisy chain type DCR bus:
(1) in the daisy chain type DCR bus, the long connection when between the multistage master-slave equipment that has One's name is legion during from equipment and main equipment cascade occupies a large amount of interconnection resources, has increased chip area and physics realization difficulty;
(2) daisy chain type DCR bus is only supported the reading writing information transmission, does not support from the communication of the other types such as device interrupt.
Summary of the invention
The technical problem to be solved in the present invention provides and a kind ofly can reduce communication interconnect line quantity between master-slave equipment, can support devices communicating and chip-on communication method and the device of supporting to comprise the much informations transmission such as register read is write, device interrupt in the different clock-domains, placement-and-routing and temporal constraint workload in the time of simultaneously can simplifying physics realization, take that hardware resource is few, extensibility is good based on the means of communication and device on the integrated circuit chip of asynchronous structure.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A kind of based on the means of communication on the integrated circuit chip of asynchronous structure, implementation step is as follows:
1) in advance main equipment is directly connected to each from the request interface of equipment by the request bus, in advance a plurality of the series connection successively from the device acknowledge interface formed from the device acknowledge chain, will be positioned at described replying interface from device acknowledge interface and main equipment and link to each other from device acknowledge chain begin chain, receive the request message that is consisted of by little bag of autonomous device from equipment by the request bus, described from equipment by send the response message that is consisted of by little bag from the device acknowledge chain to main equipment;
2) when main equipment when sending message from equipment, at first by main equipment message is divided into little bag, and enters little bag transmission state by the described request bus broadcast; Then under little bag transmission state, main equipment is by described request bus first little bag to all from this message of device broadcasts, all ask little bag to shake hands into function signal by described the transmission successively from the device acknowledge chain after equipment reads little bag, main equipment is received after the little bag of request is shaken hands into function signal and is begun to transmit next little bag, transmit little bag until last little bag transmission is complete by said process, finish the transmission course of this request message; All, parse address information wherein and mate with oneself address space after finishing message and receiving from equipment, if mate unsuccessful, then abandon this message, if operation corresponding to this message then carried out in success, if need to return response message to main equipment, then continue execution in step 3);
3) when sending message from equipment to main equipment, at first by going forward side by side and wrap in a subtle way transmission state by sending the response message useful signal from the device acknowledge chain to upper level from equipment from equipment, then under little bag transmission state, send first little bag, if upper level finds that from equipment it replys the interface free time, then this little bag is forwarded to more upper level from equipment, transmit so successively, until be forwarded to the interface of replying of main equipment; Main equipment receives this reply little bag after, return and reply little bag and shake hands into function signal, by transmitting successively from equipment from the at different levels of device acknowledge chain, obtaining this from equipment replys after little bag shakes hands into function signal, begin to transmit next little bag, until last little bag transmission is complete, finish the transmission course of this response message and so forth.
As asynchronous communication further improvements in methods on the sheet that the present invention is based on integrated circuit (IC) chip:
Described step 2) message in has fixing message length and kind, described message is divided into little bag that little bag specifically refers to each message is divided into fixed qty, and the width P of message
LengthWidth S with each little bag
LengthBetween satisfy the relation shown in the formula (1);
P
length＝(S
length-1)*n (1)
Wherein, n is the quantity that message is divided into little bag, n ∈ 1,2 ... }.
Described step 2) and step 3) in whether detect little bag be whether the most significant digit that last little bag of message specifically refers to detect each little bag is logical one, if the most significant digit of little bag is logical one, judge that then current little bag is last little bag of message.
The content territory of described message comprises destination address, data, type of message and Custom Attributes, described main equipment or when sending message, decide the target that sends message according to described destination address from equipment, described main equipment or decide the concrete manner of execution of message from equipment according to data and type of message.
It is a kind of based on communication device on the integrated circuit chip of asynchronous structure that the present invention also provides, comprise a main equipment and a plurality of from equipment, described main equipment is directly connected to each from equipment by the request bus, described a plurality of being connected in series successively from equipment forms from the device acknowledge chain, and is positioned at linking to each other with main equipment from equipment from device acknowledge chain begin chain; Describedly receive the request message that is consisted of by little bag of autonomous device from equipment by the request bus, described from equipment by send the response message that is consisted of by little bag from the device acknowledge chain to main equipment; When main equipment when sending message from equipment, at first by main equipment message is divided into little bag, and enters little bag transmission state by the described request bus broadcast; Then under little bag transmission state, main equipment is by described request bus first little bag to all from this message of device broadcasts, all ask little bag to shake hands into function signal by described the transmission successively from the device acknowledge chain after equipment reads little bag, main equipment is received after the little bag of request is shaken hands into function signal and is begun to transmit next little bag, transmit little bag until last little bag transmission is complete by said process, finish the transmission course of this request message; All from equipment after finishing message and receiving, parse address information wherein and mate with oneself address space, if mate unsuccessful, then abandon this message, if success, then carry out operation corresponding to this message, if need to return response message to main equipment, then continue to carry out to send message from equipment to main equipment; When sending message from equipment to main equipment, at first by going forward side by side and wrap in a subtle way transmission state by sending the response message useful signal from the device acknowledge chain to upper level from equipment from equipment, then under little bag transmission state, send first little bag, if upper level finds that from equipment it replys the interface free time, then this little bag is forwarded to more upper level from equipment, transmit so successively, until be forwarded to the interface of replying of main equipment; Main equipment receives this reply little bag after, return and reply little bag and shake hands into function signal, by transmitting successively from equipment from the at different levels of device acknowledge chain, obtaining this from equipment replys after little bag shakes hands into function signal, begin to transmit next little bag, until last little bag transmission is complete, finish the transmission course of this response message and so forth.
The present invention is based on that the means of communication have following advantage on the integrated circuit chip of asynchronous structure:
(1) asynchronous communication method of the present invention can reduce little bag width by the method that increases little bag number that single message comprises, namely reduced the communication interconnect line number between master-slave equipment, and then effectively reduced long line number signal in the whole chip, not only reduced taking but also reduced the physics realization difficulty hardware resource.
(2) use the asynchronous handshake control signal between asynchronous communication method master-slave equipment of the present invention, designed main equipment and adopted the secondary synchronous logic to realize from equipment for the asynchronous handshake control signal, can ensure the communication reliability.
(3) the content territory of the message in the asynchronous communication method of the present invention comprises type of message, by type of message except support such as the reading and writing message request etc., also support to interrupt the transmission of message and other self-defined messages, and can also expand by Custom Attributes, have feature richness, advantage that extensibility is strong.
The present invention is based on that communication device is above-mentioned based on device corresponding to the means of communication on the integrated circuit chip of asynchronous structure on the integrated circuit chip of asynchronous structure, have with above-mentioned based on the means of communication are identical on the integrated circuit chip of asynchronous structure technique effect.
Description of drawings
Fig. 1 is structure and the master-slave equipment signal connection structure synoptic diagram of the daisy chain type DCR bus of prior art.
Fig. 2 is the basic implementing procedure synoptic diagram of the embodiment of the invention.
Fig. 3 is structure and the master-slave equipment signal connection structure synoptic diagram of the embodiment of the invention.
Fig. 4 is the sequential synoptic diagram of master devices request message in the embodiment of the invention.
Fig. 5 is from the sequential synoptic diagram of device acknowledge message in the embodiment of the invention.
Embodiment
As shown in Figure 2, the embodiment of the invention is as follows based on the implementation step of the means of communication on the integrated circuit chip of asynchronous structure:
1) in advance main equipment is directly connected to each from the request interface of equipment by the request bus, in advance a plurality of the series connection successively from the device acknowledge interface formed from the device acknowledge chain, will be positioned at replying interface from device acknowledge interface and main equipment and link to each other from device acknowledge chain begin chain, receive the request message that is consisted of by little bag of autonomous device from equipment by the request bus, from equipment by send the response message that is consisted of by little bag from the device acknowledge chain to main equipment;
2) when main equipment when sending message from equipment, at first by main equipment message is divided into little bag, and enters little bag transmission state by the request bus broadcast; Then under little bag transmission state, main equipment is by request bus first little bag to all from this message of device broadcasts, all shake hands into function signal by transmit successively the little bag of request from the device acknowledge chain after equipment reads little bag, main equipment is received after the little bag of request is shaken hands into function signal and is begun to transmit next little bag, transmit little bag until last little bag transmission is complete by said process, finish the transmission course of this request message; All, parse address information wherein and mate with oneself address space after finishing message and receiving from equipment, if mate unsuccessful, then abandon this message, if operation corresponding to this message then carried out in success, if need to return response message to main equipment, then continue execution in step 3);
3) when sending message from equipment to main equipment, at first by going forward side by side and wrap in a subtle way transmission state by sending the response message useful signal from the device acknowledge chain to upper level from equipment from equipment, then under little bag transmission state, send first little bag, if upper level finds that from equipment it replys the interface free time, then this little bag is forwarded to more upper level from equipment, transmit so successively, until be forwarded to the interface of replying of main equipment; Main equipment receives this reply little bag after, return and reply little bag and shake hands into function signal, by transmitting successively from equipment from the at different levels of device acknowledge chain, obtaining this from equipment replys after little bag shakes hands into function signal, begin to transmit next little bag, until last little bag transmission is complete, finish the transmission course of this response message and so forth.
The means of communication that present embodiment adopts the asynchronous handshake communication mechanism to combine with message fragment (little bag) transmission mode, when simplifying asynchronous conversion logic, can reduce again the number of order wire between parts, be conducive to reduce the use of chip global routing passage, have and take the few advantage of hardware resource; And present embodiment supports the point-to-multipoint chain type syndeton of master-slave mode, namely a plurality ofly is cascaded with daisy architecture from equipment, shares same data bus lane.Present embodiment can be widely used in as a kind of upper asynchronous communication bus (Asynchronous Communication Bus is called for short ACB) Communication of digital integrated circuit chip.
Main equipment and all have unified message format from equipment in the present embodiment, in the present embodiment to asynchronous communication bus message (hereafter is the ACB message) on this message format called after sheet.The ACB message has fixing message length and kind, and message (ACB message) is divided into little bag that little bag specifically refers to each message is divided into fixed qty, and the width P of message (ACB message)
LengthWidth S with each little bag
LengthBetween satisfy the relation shown in the formula (1):
P
length＝(S
length-1)*n (1)
Wherein n is the quantity that message is divided into little bag, n ∈ 1,2 ... }.For example, the ACB message length is 128, then optional little bag width S
Length129,65,33,17,9,5,3,2 totally 8 kinds of selections are arranged.
Step 2) and step 3) in whether detect little bag be whether the most significant digit that last little bag (the little bag of tail) of ACB message specifically refers to detect each little bag is 1, if the most significant digit of little bag is 1, judge that then current little bag is last little bag (being the little bag of tail) of message.
In the present embodiment, the content territory of message comprises that destination address, data (write in the message and comprise, read the newspaper literary composition and interrupt message and can not comprise), type of message (as: literary composition of reading the newspaper, write message, interrupt message etc.) and Custom Attributes (length can be 0), main equipment or when sending message, decide the target that sends message according to destination address from equipment, main equipment or decide the concrete manner of execution of message according to data and type of message from equipment, Custom Attributes then is used for strengthening or expanded function.Present embodiment is by type of message, so that the present embodiment holding components interrupts message, thereby supports interrupt function, for part design provides more flexibly function selection.Each message also comprises destination address, and each equipment is abandoned this message automatically after judging that destination address is not mated; The same with message, each little bag also comprises destination address, and each equipment is abandoned this little bag automatically after judging that destination address is not mated.
As shown in Figure 3, present embodiment comprises a main equipment and a plurality of from equipment based on communication device on the integrated circuit chip of asynchronous structure, main equipment is directly connected to each from equipment by the request bus, a plurality of being connected in series successively from equipment forms from the device acknowledge chain, and is positioned at linking to each other with main equipment from equipment from device acknowledge chain begin chain; Receive the request message that is consisted of by little bag of autonomous device from equipment by the request bus, from equipment by send the response message that is consisted of by little bag from the device acknowledge chain to main equipment; When main equipment when sending message from equipment, at first by main equipment message is divided into little bag, and enters little bag transmission state by the request bus broadcast; Then under little bag transmission state, main equipment is by request bus first little bag to all from this message of device broadcasts, all shake hands into function signal by transmit successively the little bag of request from the device acknowledge chain after equipment reads little bag, main equipment is received after the little bag of request is shaken hands into function signal and is begun to transmit next little bag, transmit little bag until last little bag transmission is complete by said process, finish the transmission course of this request message; All from equipment after finishing message and receiving, parse address information wherein and mate with oneself address space, if mate unsuccessful, then abandon this message, if success, then carry out operation corresponding to this message, if need to return response message to main equipment, then continue to carry out to send message from equipment to main equipment; When sending message from equipment to main equipment, at first by going forward side by side and wrap in a subtle way transmission state by sending the response message useful signal from the device acknowledge chain to upper level from equipment from equipment, then under little bag transmission state, send first little bag, if upper level finds that from equipment it replys the interface free time, then this little bag is forwarded to more upper level from equipment, transmit so successively, until be forwarded to the interface of replying of main equipment; Main equipment receives this reply little bag after, return and reply little bag and shake hands into function signal, by transmitting successively from equipment from the at different levels of device acknowledge chain, obtaining this from equipment replys after little bag shakes hands into function signal, begin to transmit next little bag, until last little bag transmission is complete, finish the transmission course of this response message and so forth.Present embodiment sends to main equipment from the message of equipment and is connected to each from equipment by bus mode, removed the address bus between master-slave equipment, to reply useful signal and arrive main equipment through subordinate devices cascaded, to be connected to main equipment from the connection cascade that equipment sends to main equipment simultaneously, can effectively reduce main equipment with from the long line of the communication of equipment room, for the rear end layout provides larger space; And for solving the signal of communication transmission problem of cross clock domain, present embodiment has adopted the asynchronous handshake communication mechanism, has reduced the hardware spending of striding the clock conversion logic.
The explanation of the channel signal of master devices request bus is shown in table (1) among Fig. 3, and wherein x is the bit wide of data bus.
Table (1):
Among Fig. 3 from the explanation of the channel signal of device acknowledge chain as show shown in (2), wherein m be in the Data-Link from the data-interface bit wide of equipment room and from the data-interface bit wide from equipment and main equipment of device acknowledge chain begin chain.
Table (2):
The master-slave equipment data bus of x position bit wide, m bit width be example from the equipment room interface, as shown in Figure 3, main equipment adopts bus mode directly to be cascaded to each from equipment (each equipment can adopt the clock of different frequency) to the data transmission from equipment, respectively from equipment end by receive data on the data bus, respectively determine whether and to process this message by oneself according to the address information that receives message from equipment end, if not, then directly abandon this message.What the master-slave equipment interface communication adopted is the asynchronous handshake transmission mode.Handshake is mainly mst_slv_req_svld and slv_mst_req_gnt; The mst_slv_req_pvld signal is used to indicate message and transmits, and can play certain fault-tolerant effect, and this signal is used for the collision detection of response message when the parts cascade simultaneously.No matter request message or response message, the message transmission procedure signal timing diagram is similar between master-slave equipment.The below will send message to the explanation from the request message of equipment as example (its type of message is set by " type of message " field the message, and it can be reading and writing or other user-defined type of messages) take main equipment.In the present embodiment, little bag transmission state signal is by mst_slv_req_pvld, dst
i_ dst
I-1_ ack_pvld and slv_mst_ack_pvld realize.Lower floor is from the output signal line dst of equipment i
i_ dst
I-1_ ack_pvld, dst
i_ dst
I-1_ ack_svld, dst
i_ dst
I-1_ ack_data is connected respectively to the upper strata from equipment i-1; Output signal line dst is replied from shaking hands of equipment i-1 in the upper strata
I-1_ dst
i_ ack_gnt is linked to lower floor from equipment i.Directly be linked to main equipment with the slv_mst_ack_pvld from this equipment, slv_mst_ack_svld, mst_slv_ack_data signal wire that main equipment directly links to each other; The acknowledge signal line mst_slv_ack_gnt signal wire of shaking hands of main equipment is connected to above-mentioned from equipment end.When the master-slave equipment intermodule connects, main equipment is can cascade a plurality of from equipment, because main equipment is to from the point-to-multipoint chain type syndeton of the data of equipment, main equipment institute can direct cascade mainly is subject to the restriction of selected technique the fan leaves coefficient from number of devices.
As shown in Figure 4, main equipment sends message to as follows from the detailed step of equipment:
1. at first with mst_slv_req_pvld effective (putting 1), could initiate main equipment to the message request from equipment, enter little bag transmission state, just can begin thus the communication take little bag as unit.
2. in little bag transmission state stage, (put 1, represent that this signal is effective) when the mst_slv_req_pvld signal wire is effective, main equipment is to initiating handshake request (little bag handshake mst_slv_req_svld puts 1) from equipment.Then, whether effective (put 1, represent that this signal is effective) determines that whether handshake phase is correct, carries out message transmissions to main equipment according to the answer signal slv_mst_req_gnt that shakes hands from little bag of device acknowledge.If answer signal is effective, then enter time sequence status conversion t
1Stage.Otherwise, can not finish shaking hands between master-slave equipment.
3. ought enter t
1After stage, the slv_mst_req_gnt answer signal of shaking hands is effective, shows namely that master-slave equipment " has been shaken hands " to finish.From then on, get the hang of the conversion t
2, t
3t
2The stage main equipment sends a little bag to bus mst_slv_req_data[x:0]; t
3Stage finishes the handshake request of this little bag with little bag request mst_slv_req_svld zero clearing, enters t
4Stage.
4. enter t
4After stage, mst_slv_req_svld is invalid for the main equipment handshake request.After this, from the equipment answer signal slv_mst_req_gnt zero clearing of will shaking hands, finish shaking hands of this little bag and reply.If this message is end of transmission (can be according to the most significant digit mst_slv_req_data[x of data signal line] be 1, determine whether the little bag of tail of message), then enter t
EndIn the stage, finish the transmission of this message; If message transmissions does not finish to enter t
5Stage (namely entering " 2. " stage) is restarted the transmission of next little bag.
5. enter t
EndBehind the translate phase, main equipment is finished to the message transmissions from equipment, with the mst_slv_req_pvld zero clearing, finishes the transmission of whole message.When mst_slv_req_pvld signal again effectively when (putting 1), namely begin the transmission (namely entering " 1. " stage) of next message.
As shown in Figure 5, send main equipment and from the communication signal control signal (dst of equipment room cascade from equipment in the present embodiment
i_ dst
I-1_ ack_pvld, dst
i_ dst
I-1_ ack_svld, dst
I-1_ dst
i_ ack_gnt) and data-signal (dst
i_ dst
I-1_ ack_data[m:0]) sequential of Communication Control signal is identical between sequential and above-mentioned master-slave equipment, therefore do not repeat them here.
Present embodiment is in the master-slave equipment data transmission procedure, be the metastable state phenomenon that may occur in the establishment message transmission procedure, with the Communication Control signal in the asynchronous handshake agreement: mst_slv_req_pvld, mst_slv_req_svld, slv_mst_req_gnt, slv_mst_ack_pvld, slv_mst_ack_svld, mst_slv_ack_gnt, dsti_dsti-1_pvld, dsti_dsti-1_svld, dsti-1_dsti_gnt take secondary to deposit synchronously design, guarantee the communication reliability of present embodiment.
The above only is preferred implementation of the present invention, and protection scope of the present invention also not only is confined to above-described embodiment, and all technical schemes that belongs under the thinking of the present invention all belong to protection scope of the present invention.Should be pointed out that for those skilled in the art in the some improvements and modifications that do not break away under the principle of the invention prerequisite, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. one kind based on the means of communication on the integrated circuit chip of asynchronous structure, it is characterized in that implementation step is as follows:
1) in advance main equipment is directly connected to each from the request interface of equipment by the request bus, in advance a plurality of the series connection successively from the device acknowledge interface formed from the device acknowledge chain, will be positioned at described replying interface from device acknowledge interface and main equipment and link to each other from device acknowledge chain begin chain, receive the request message that is consisted of by little bag of autonomous device from equipment by the request bus, described from equipment by send the response message that is consisted of by little bag from the device acknowledge chain to main equipment;
2) when main equipment when sending message from equipment, at first by main equipment message is divided into little bag, and enters little bag transmission state by the described request bus broadcast; Then under little bag transmission state, main equipment is by described request bus first little bag to all from this message of device broadcasts, all ask little bag to shake hands into function signal by described the transmission successively from the device acknowledge chain after equipment reads little bag, main equipment is received after the little bag of request is shaken hands into function signal and is begun to transmit next little bag, transmit little bag until last little bag transmission is complete by said process, finish the transmission course of this request message; All, parse address information wherein and mate with oneself address space after finishing message and receiving from equipment, if mate unsuccessful, then abandon this message, if operation corresponding to this message then carried out in success, if need to return response message to main equipment, then continue execution in step 3);
3) when sending message from equipment to main equipment, at first by going forward side by side and wrap in a subtle way transmission state by sending the response message useful signal from the device acknowledge chain to upper level from equipment from equipment, then under little bag transmission state, send first little bag, if upper level finds that from equipment it replys the interface free time, then this little bag is forwarded to more upper level from equipment, transmit so successively, until be forwarded to the interface of replying of main equipment; Main equipment receives this reply little bag after, return and reply little bag and shake hands into function signal, by transmitting successively from equipment from the at different levels of device acknowledge chain, obtaining this from equipment replys after little bag shakes hands into function signal, begin to transmit next little bag, until last little bag transmission is complete, finish the transmission course of this response message and so forth.
2. according to claim 1 based on the means of communication on the integrated circuit chip of asynchronous structure, it is characterized in that: the message described step 2) has fixing message length and kind, described message is divided into little bag that little bag specifically refers to each message is divided into fixed qty, and the width P of message
LengthWidth S with each little bag
LengthBetween satisfy the relation shown in the formula (1);
P
length＝(S
length-1)*n (1)
Wherein, n is the quantity that message is divided into little bag, n ∈ 1,2 ... }.
3. according to claim 2 based on the means of communication on the integrated circuit chip of asynchronous structure, it is characterized in that: described step 2) and step 3) in whether detect little bag be whether the most significant digit that last little bag of message specifically refers to detect each little bag is logical one, if the most significant digit of little bag is logical one, judge that then current little bag is last little bag of message.
4. according to claim 3 based on the means of communication on the integrated circuit chip of asynchronous structure, it is characterized in that: the content territory of described message comprises destination address, data, type of message and Custom Attributes, described main equipment or when sending message, decide the target that sends message according to described destination address from equipment, described main equipment or decide the concrete manner of execution of message from equipment according to data and type of message.
5. one kind based on communication device on the integrated circuit chip of asynchronous structure, it is characterized in that: comprise a main equipment and a plurality of from equipment, described main equipment is directly connected to each from equipment by the request bus, described a plurality of being connected in series successively from equipment forms from the device acknowledge chain, and is positioned at linking to each other with main equipment from equipment from device acknowledge chain begin chain; Describedly receive the request message that is consisted of by little bag of autonomous device from equipment by the request bus, described from equipment by send the response message that is consisted of by little bag from the device acknowledge chain to main equipment; When main equipment when sending message from equipment, at first by main equipment message is divided into little bag, and enters little bag transmission state by the described request bus broadcast; Then under little bag transmission state, main equipment is by described request bus first little bag to all from this message of device broadcasts, all ask little bag to shake hands into function signal by described the transmission successively from the device acknowledge chain after equipment reads little bag, main equipment is received after the little bag of request is shaken hands into function signal and is begun to transmit next little bag, transmit little bag until last little bag transmission is complete by said process, finish the transmission course of this request message; All from equipment after finishing message and receiving, parse address information wherein and mate with oneself address space, if mate unsuccessful, then abandon this message, if success, then carry out operation corresponding to this message, if need to return response message to main equipment, then continue to carry out to send message from equipment to main equipment; When sending message from equipment to main equipment, at first by going forward side by side and wrap in a subtle way transmission state by sending the response message useful signal from the device acknowledge chain to upper level from equipment from equipment, then under little bag transmission state, send first little bag, if upper level finds that from equipment it replys the interface free time, then this little bag is forwarded to more upper level from equipment, transmit so successively, until be forwarded to the interface of replying of main equipment; Main equipment receives this reply little bag after, return and reply little bag and shake hands into function signal, by transmitting successively from equipment from the at different levels of device acknowledge chain, obtaining this from equipment replys after little bag shakes hands into function signal, begin to transmit next little bag, until last little bag transmission is complete, finish the transmission course of this response message and so forth.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210495193.3A CN102981992B (en) | 2012-11-28 | 2012-11-28 | Based on the means of communication and device on the integrated circuit chip of asynchronous structure |
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| CN103257940A (en) * | 2013-03-27 | 2013-08-21 | 青岛中星微电子有限公司 | Data writing method and device for SoC (system on chip) |
| CN103414617A (en) * | 2013-08-09 | 2013-11-27 | 深圳市富斯遥控模型技术有限公司 | Serial I-BUS structure applied to remote control model and communication method thereof |
| CN104881382A (en) * | 2015-06-15 | 2015-09-02 | 刘晓辉 | Master and slave equipment connection device and address recognition method thereof |
| CN103914427B (en) * | 2014-04-14 | 2016-08-31 | 中国人民解放军国防科学技术大学 | The means of communication and device on integrated circuit chips based on three physical interconnections lines |
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| CN110764444A (en) * | 2019-10-10 | 2020-02-07 | 苏州浪潮智能科技有限公司 | Control system, switch, and method for controlling execution device |
| CN111884892A (en) * | 2020-06-12 | 2020-11-03 | 苏州浪潮智能科技有限公司 | Data transmission method and system based on shared link protocol |
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| CN118138401A (en) * | 2024-05-08 | 2024-06-04 | 山东大学 | Industrial bus system with mixed topology and communication method thereof |
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| CN103257940A (en) * | 2013-03-27 | 2013-08-21 | 青岛中星微电子有限公司 | Data writing method and device for SoC (system on chip) |
| CN103257940B (en) * | 2013-03-27 | 2016-08-03 | 青岛中星微电子有限公司 | A kind of SOC(system on a chip) SoC writes the method and device of data |
| CN103414617A (en) * | 2013-08-09 | 2013-11-27 | 深圳市富斯遥控模型技术有限公司 | Serial I-BUS structure applied to remote control model and communication method thereof |
| CN103414617B (en) * | 2013-08-09 | 2017-02-01 | 深圳市富斯遥控模型技术有限公司 | Serial I-BUS structure applied to remote control model and communication method thereof |
| CN103914427B (en) * | 2014-04-14 | 2016-08-31 | 中国人民解放军国防科学技术大学 | The means of communication and device on integrated circuit chips based on three physical interconnections lines |
| CN104881382A (en) * | 2015-06-15 | 2015-09-02 | 刘晓辉 | Master and slave equipment connection device and address recognition method thereof |
| CN109947605A (en) * | 2017-12-21 | 2019-06-28 | 北京比特大陆科技有限公司 | Method for diagnosing faults |
| CN109218152A (en) * | 2018-07-19 | 2019-01-15 | 精华隆智慧感知科技（深圳）股份有限公司 | A kind of equipment automatic recognition system |
| CN110336563A (en) * | 2019-05-09 | 2019-10-15 | 核芯互联(北京)科技有限公司 | A kind of work pattern selection method, device, system and storage medium |
| CN110764444A (en) * | 2019-10-10 | 2020-02-07 | 苏州浪潮智能科技有限公司 | Control system, switch, and method for controlling execution device |
| US11650950B2 (en) | 2019-10-10 | 2023-05-16 | Inspur Suzhou Intelligent Technology Co., Ltd. | Control system, switch, and method for controlling execution device |
| CN111884892A (en) * | 2020-06-12 | 2020-11-03 | 苏州浪潮智能科技有限公司 | Data transmission method and system based on shared link protocol |
| CN112035389A (en) * | 2020-08-28 | 2020-12-04 | 西安微电子技术研究所 | PLB-AXI bus conversion bridge and working method thereof |
| CN112035389B (en) * | 2020-08-28 | 2022-08-23 | 西安微电子技术研究所 | PLB-AXI bus conversion bridge and working method thereof |
| CN112636779A (en) * | 2020-12-17 | 2021-04-09 | 深圳街电科技有限公司 | Communication method and electronic equipment |
| CN118138401A (en) * | 2024-05-08 | 2024-06-04 | 山东大学 | Industrial bus system with mixed topology and communication method thereof |
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