CN102183722A - Chip - Google Patents
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- CN102183722A CN102183722A CN2011100475929A CN201110047592A CN102183722A CN 102183722 A CN102183722 A CN 102183722A CN 2011100475929 A CN2011100475929 A CN 2011100475929A CN 201110047592 A CN201110047592 A CN 201110047592A CN 102183722 A CN102183722 A CN 102183722A
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Abstract
The invention discloses a chip. The chip comprises a PRBS test source module used for generating and sending encapsulation message of PRBS code streams, wherein, the PRBS test source module comprises a generation unit, which is used for generating PRBS code streams having the same quantity with that of chip ports, an encapsulation unit, which is used for respectively encapsulating PRBS code streams and obtaining encapsulation message of each PRBS code stream, a sending unit, which is used for sending the encapsulation message of each PRBS code stream, and a forwarding engine module, which is used for forwarding the encapsulation message of each PRBS code stream sent by the PRBS test source module to corresponding chip ports. The chip of the invention can finish tests of all the ports and paths of the chip once and forall, thereby substantially improving testing efficiency of the chip and saving testing cost.
Description
Technical field
The present invention relates to the chip testing technology field, relate in particular to chip.
Background technology
In high speed design,, adopt PRBS (Pseudo-RandomBinary Sequence, Pseudo-Random Binary Sequence) technology to send the PRBS code stream usually and test in order to test the bit error rate of high-speed serial channel transmission.Owing to produce the randomness of sign indicating number type, this technology is widely used in various tests and OAM (Operations, Administration andMaintenance operate, manage, safeguard) technology.GPON (Gigabit-capable Passive Optical Networks, Gigabit Passive Optical Network) and EPON (Ethernet Passive Optical Networks, the E bit passive optical network) is popular in recent years optical fiber access technology, equipment mainly is divided into OLT (the Optical Line Terminal of local side, optical line terminal) and the ONU of terminal (Optical Network Unit, optical network unit) two kind, with an ONU chip is example, embed the way of test function at present at chip internal, mainly be to adopt the PRBS test source that disperses, each PRBS test source produces a PRBS code stream corresponding to a port, adopts a plurality of PRBS test sources that the indivedual key ports and the module (for example Simulation with I such as MAC and SerDes P) of chip internal are tested respectively respectively.
But, present method of testing need enable control to the PRBS test source that many places disperse, result for verification also will inquire about respectively, can not the major avenues of approach of chip be covered fully during test, but need by various testing tools each port of chip to be tested one by one, testing efficiency is lower, and the test duration is longer, also the software and hardware link to test proposes higher requirement, directly causes testing cost higher.
Summary of the invention
The embodiment of the invention provides a kind of chip, in order to improve chip testing efficiency, reduces the chip testing cost, and this chip comprises:
PRBS test source module is used to generate and send the encapsulated message of PRBS code stream, and wherein, described PRBS test source module comprises: generation unit, be used for according to chip port quantity, and produce the PRBS code stream of equal number; Encapsulation unit is used for respectively each bar PRBS code stream being encapsulated, and obtains the encapsulated message of each bar PRBS code stream; And transmitting element is used to send the encapsulated message of each bar PRBS code stream of acquisition;
The forwarding engine module, the encapsulated message that is used for each bar PRBS code stream that described PRBS test source module is sent is forwarded to corresponding chip port.
In the chip of the embodiment of the invention, PRBS test source module produces the PRBS code stream of equal number according to chip port quantity; Respectively each bar PRBS code stream is encapsulated, obtain the encapsulated message of each bar PRBS code stream; Send the encapsulated message of each the bar PRBS code stream that obtains; With the PRBS test source that available technology adopting is disperseed indivedual key ports of chip internal are compared with the technical scheme that module is tested respectively, the encapsulated message of disposable many PRBS code streams that all of the port and the path testing of chip are finished can be provided, thereby significantly improve chip testing efficiency, save testing cost.
In the chip of the embodiment of the invention, the PRBS test source module encapsulated message with the PRBS code stream chip port number that provide is provided the forwarding engine module; The encapsulated message of each bar PRBS code stream is forwarded to corresponding chip port; With the PRBS test source that available technology adopting is disperseed indivedual key ports of chip internal are compared with the technical scheme that module is tested respectively, the encapsulated message of many PRBS code streams that can be disposable PRBS test source module be provided is forwarded to the chip corresponding port, thereby all and path testing of chip are finished, can significantly improve chip testing efficiency, save testing cost.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.In the accompanying drawings:
Fig. 1 is the processing flow chart of embodiment of the invention chips build-in-test method;
Fig. 2 is the processing flow chart of embodiment of the invention chips build-in-test method;
Fig. 3 is applied to the exemplary plot of ONU chip for embodiment of the invention chips build-in-test method;
Fig. 4 is the structural representation of PRBS test source module in the embodiment of the invention;
Fig. 5 is the concrete enforcement synoptic diagram of PRBS test source module shown in Figure 4 in the embodiment of the invention;
Fig. 6 is the concrete enforcement synoptic diagram of PRBS test source module shown in Figure 5 in the embodiment of the invention;
Fig. 7 is the structural representation of forwarding engine module in the embodiment of the invention;
Fig. 8 is the concrete enforcement synoptic diagram of forwarding engine module shown in Figure 7 in the embodiment of the invention;
Fig. 9 is the structural representation of embodiment of the invention chips.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer, the embodiment of the invention is described in further details below in conjunction with accompanying drawing.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
As shown in Figure 1, the treatment scheme of embodiment of the invention chips build-in-test method can comprise;
The encapsulated message of each bar PRBS code stream that step 103, transmission obtain.
Flow process shown in Figure 1 can be implemented by the equipment that can realize its function or module, and for example this equipment or module can be a PRBS test source module to be set realize in chip.The embodiment of the invention is that example describes with PRBS test source module.
Can learn that by flow process shown in Figure 1 PRBS test source module produces the PRBS code stream of equal number according to chip port quantity; Respectively each bar PRBS code stream is encapsulated, obtain the encapsulated message of each bar PRBS code stream; Send the encapsulated message of each the bar PRBS code stream that obtains; With the PRBS test source that available technology adopting is disperseed indivedual key ports of chip internal are compared with the technical scheme that module is tested respectively, the encapsulated message of disposable many PRBS code streams that all of the port and the path testing of chip are finished can be provided, thereby significantly improve chip testing efficiency, save testing cost.
As shown in Figure 2, also provide a kind of chip build-in-test method in the embodiment of the invention, its treatment scheme can comprise;
The encapsulated message of the PRBS code stream of step 201, reception and chip port number;
Flow process shown in Figure 2 can be implemented by the equipment that can realize its function or module, and for example this equipment or module can be a forwarding engine module to be set realize in chip.The embodiment of the invention is that example describes with the forwarding engine module.
Can learn that by flow process shown in Figure 2 in the embodiment of the invention, the PRBS test source module encapsulated message with the PRBS code stream chip port number that provide is provided the forwarding engine module; The encapsulated message of each bar PRBS code stream is forwarded to corresponding chip port; With the PRBS test source that available technology adopting is disperseed indivedual key ports of chip internal are compared with the technical scheme that module is tested respectively, the encapsulated message of many PRBS code streams that can be disposable PRBS test source module be provided is forwarded to the chip corresponding port, thereby all and path testing of chip are finished, can significantly improve chip testing efficiency, save testing cost.
During concrete enforcement, can be in the embedded PRBS test source module of chip, at the individual port of N (N is greater than 1) of chip, produce N bar PRBS code stream, and can encapsulate according to being configured to each bar PRBS code stream, for example can carry out the encapsulation of ETH network messages such as (Ethernet, Ethernets).The concrete packing forms that different PRBS code streams by using is different is to distinguish each bar PRBS code stream.
For example, respectively each bar PRBS code stream is being encapsulated, obtaining in the process of encapsulated message of each bar PRBS code stream, can in the encapsulated message of each bar PRBS code stream, add the characteristic of correspondence territory, to distinguish each bar PRBS code stream.Wherein, add property field and can adopt multiple mode, for example, in the encapsulated message of each bar PRBS code stream, add corresponding traffic identifier; Certainly can also add property field by adding modes such as different MAC (Media access control, medium Access Control) addresses, VLAN (Virtual Bridged Local Area Networks, VLAN) sign in implementing.
During concrete enforcement, can establish the extremely forwarding of corresponding chip port of encapsulated message that a forwarding engine module is specifically implemented each bar PRBS code stream at chip internal, for example, aforementioned PRBS test source module offers the forwarding engine module after can the encapsulated message with each bar PRBS code stream of being obtained and carries out and transmit.
Concrete, can select different forwarding decisions at the encapsulated message of different PRBS code streams, the encapsulated message of each bar PRBS code stream is sent to corresponding chip port.It is multiple to select the specific implementation of different forwarding decisions to have, and for example, can be forwarded to before the corresponding chip port the default different property fields and the mapping relations of chip port at the encapsulated message with each bar PRBS code stream; Then when implement transmitting, can be according to the property field in the encapsulated message of each bar PRBS code stream, and the default property field and the mapping relations of chip port, the encapsulated message of each bar PRBS code stream is forwarded to the chip port of correspondence.For example, when property field is that mode with traffic identifier is when being added in the encapsulated message of each bar PRBS code stream, can be according to the traffic identifier in the encapsulated message of each bar PRBS code stream, and the default traffic identifier and the mapping relations of chip port, the encapsulated message of each bar PRBS code stream is forwarded to the chip port of correspondence.Like this, all there is the encapsulated message of a corresponding PRBS code stream to send, can realizes test simultaneously chip all of the port and path at each chip port.
During concrete enforcement, before the encapsulated message with each bar PRBS code stream is forwarded to corresponding chip port, can also comprise the process that the encapsulated message to each bar PRBS code stream carries out the loopback verification, for example, receive the encapsulated message of the PRBS code stream of each chip port loopback by the forwarding engine module, and be transmitted to PRBS test source module; PRBS test source module is carried out verification to the encapsulated message of each bar PRBS code stream of reception.The encapsulated message of many PRBS code streams can be received and verification simultaneously, and check results also can be recorded simultaneously, with the enforcement efficient of lifting verification and the promptness of lane testing result acquisition.
Can adopt different modes such as cable loopback, optical fiber loopback, OLT loopback to realize loopback on each chip port.The encapsulated message of the PRBS code stream that sends from each port of chip again can be by same port loopback chip internal like this.The encapsulated message of the PRBS code stream of loopback inside can be beamed back PRBS test source module through aforementioned forwarding engine module and carry out verification.
When the encapsulated message to each bar PRBS code stream of receiving carries out verification, can also comprise: the property field in the encapsulated message of each bar PRBS code stream of receiving is discerned; By different property fields, the encapsulated message number and the check results that send and/or receive are added up.For example, can discern the traffic identifier in the encapsulated message of each bar PRBS code stream of receiving; By different traffic identifier, the encapsulated message number and the check results that send and/or receive are added up.Can count the encapsulated message number and the check results that send and/or receive like this by different PRBS code streams, handle, for example can know the test result of each port of chip easily so that carry out follow-up data analysis.
Fig. 3 has provided the example that the chip build-in-test method of the embodiment of the invention is applied to an ONU chip.Can see by Fig. 3, in the ONU chip that is connected with OLT by optical fiber, comprise a PRBS test source module, this PRBS test source module produces the PRBS code stream of equal number according to chip port quantity (n+1) and encapsulates, and the encapsulated message of each bar PRBS code stream is offered the forwarding engine module forwards to corresponding chip port (comprising MAC, SerDes, GMAC etc.).
A kind of PRBS test source module, forwarding engine module and chip are also provided in the embodiment of the invention, as described in the following examples.Because this PRBS test source module, forwarding engine module are similar to said chip build-in-test method with the principle that chip is dealt with problems, therefore the enforcement of this PRBS test source module, forwarding engine module and chip can repeat part and repeat no more referring to the enforcement of chip build-in-test method.
As shown in Figure 4, the PRBS test source module in the embodiment of the invention can comprise:
Transmitting element 403 is used to send the encapsulated message of each bar PRBS code stream of acquisition.
Among the embodiment, encapsulation unit 402 specifically is used in the encapsulated message of each bar PRBS code stream, adds the characteristic of correspondence territory, to distinguish each bar PRBS code stream.
Among the embodiment, encapsulation unit 402 specifically is used in the encapsulated message of each bar PRBS code stream, adds corresponding traffic identifier.
As shown in Figure 5, among the embodiment, PRBS test source module shown in Figure 4 can also comprise:
Receiving element 501 is used to receive the encapsulated message of the PRBS code stream of each chip port loopback;
As shown in Figure 6, among the embodiment, PRBS test source module shown in Figure 5 can also comprise:
Among the embodiment, recognition unit 601 specifically can be used for: the traffic identifier to the encapsulated message of each bar PRBS code stream of receiving is discerned;
As shown in Figure 7, the forwarding engine module in the embodiment of the invention can comprise:
First receiving element 701 is used to receive the encapsulated message with the PRBS code stream of chip port number;
Among the embodiment, first retransmission unit 701 specifically can be used for:
According to the property field in the encapsulated message of each bar PRBS code stream, and the default property field and the mapping relations of chip port, the encapsulated message of each bar PRBS code stream is forwarded to the chip port of correspondence.
Among the embodiment, first retransmission unit 701 specifically can be used for:
According to the traffic identifier in the encapsulated message of each bar PRBS code stream, and the default traffic identifier and the mapping relations of chip port, the encapsulated message of each bar PRBS code stream is forwarded to the chip port of correspondence.
As shown in Figure 8, among the embodiment, forwarding engine module shown in Figure 7 can also comprise:
Second receiving element 801 is used to receive the encapsulated message of the PRBS code stream of each chip port loopback;
Among the embodiment, second receiving element 801 specifically can be used for: receive the encapsulated message that each chip port adopts the PRBS code stream of cable loopback, optical fiber loopback or OLT loopback.
As shown in Figure 9, the chip in the embodiment of the invention can comprise:
PRBS test source module 901 is used for according to chip port quantity, produces the Pseudo-Random Binary Sequence PRBS code stream of equal number; Respectively each bar PRBS code stream is encapsulated, obtain the encapsulated message of each bar PRBS code stream; Send the encapsulated message of each the bar PRBS code stream that obtains;
Forwarding engine module 902, the encapsulated message that is used for each bar PRBS code stream that PRBS test source module 901 is sent is forwarded to corresponding chip port.
In sum, in the embodiment of the invention, PRBS test source module produces the PRBS code stream of equal number according to chip port quantity; Respectively each bar PRBS code stream is encapsulated, obtain the encapsulated message of each bar PRBS code stream; Send the encapsulated message of each the bar PRBS code stream that obtains; With the PRBS test source that available technology adopting is disperseed indivedual key ports of chip internal are compared with the technical scheme that module is tested respectively, the encapsulated message of disposable many PRBS code streams that all of the port and the path testing of chip are finished can be provided, thereby significantly improve chip testing efficiency, effectively reduce the chip testing time, reduction is saved testing cost to the requirement of the software and hardware link of test.
In the embodiment of the invention, the PRBS test source module encapsulated message with the PRBS code stream chip port number that provide is provided the forwarding engine module; The encapsulated message of each bar PRBS code stream is forwarded to corresponding chip port; With the PRBS test source that available technology adopting is disperseed indivedual key ports of chip internal are compared with the technical scheme that module is tested respectively, the encapsulated message of many PRBS code streams that can be disposable PRBS test source module be provided is forwarded to the chip corresponding port, thereby all and path testing of chip are finished, can significantly improve chip testing efficiency, effectively reduce the chip testing time, reduction is saved testing cost to the requirement of the software and hardware link of test.
The embodiment of the invention can be accomplished all standing to the main business path of chip internal, and the soldered wires that the chip board level is used is accomplished all standing, and system-level cable, optical fiber are accomplished all standing.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to the process flow diagram and/or the block scheme of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block scheme and/or square frame and process flow diagram and/or the block scheme and/or the combination of square frame.Can provide these computer program instructions to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computing machine or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame.
These computer program instructions also can be loaded on computing machine or other programmable data processing device, make on computing machine or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computing machine or other programmable devices is provided for being implemented in the step of the function of appointment in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a chip is characterized in that, comprising:
PRBS test source module is used to generate and send the encapsulated message of PRBS code stream, and wherein, described PRBS test source module comprises: generation unit, be used for according to chip port quantity, and produce the PRBS code stream of equal number; Encapsulation unit is used for respectively each bar PRBS code stream being encapsulated, and obtains the encapsulated message of each bar PRBS code stream; And transmitting element is used to send the encapsulated message of each bar PRBS code stream of acquisition;
The forwarding engine module, the encapsulated message that is used for each bar PRBS code stream that described PRBS test source module is sent is forwarded to corresponding chip port.
2. chip as claimed in claim 1 is characterized in that, described encapsulation unit also is used for the encapsulated message at each bar PRBS code stream, adds the characteristic of correspondence territory, to distinguish each bar PRBS code stream.
3. chip as claimed in claim 1 is characterized in that, described encapsulation unit also is used for the encapsulated message at each bar PRBS code stream, adds corresponding traffic identifier.
4. chip as claimed in claim 1 is characterized in that, described PRBS test source module also comprises:
Receiving element is used to receive the encapsulated message of the PRBS code stream of each chip port loopback;
Verification unit is used for the encapsulated message of each bar PRBS code stream of receiving is carried out verification.
5. chip as claimed in claim 4 is characterized in that, described PRBS test source module also comprises:
Recognition unit is used for the property field of the encapsulated message of each bar PRBS code stream of receiving is discerned;
Statistic unit is used for by different property fields, and the encapsulated message number and the check results that send and/or receive are added up.
6. chip as claimed in claim 5 is characterized in that, described recognition unit specifically is used for: the traffic identifier to the encapsulated message of each bar PRBS code stream of receiving is discerned;
Described statistic unit specifically is used for: by different traffic identifier, the encapsulated message number and the check results that send and/or receive are added up.
7. chip as claimed in claim 1 is characterized in that, described forwarding engine module comprises:
First receiving element is used to receive the encapsulated message with the PRBS code stream of chip port number;
First retransmission unit, the encapsulated message that is used for each bar PRBS code stream that described first receiving element is received is forwarded to corresponding chip port.
8. chip as claimed in claim 7 is characterized in that, described first retransmission unit specifically is used for:
According to the property field in the encapsulated message of each bar PRBS code stream, and the default property field and the mapping relations of chip port, the encapsulated message of each bar PRBS code stream is forwarded to the chip port of correspondence.
9. chip as claimed in claim 8 is characterized in that, described first retransmission unit specifically is used for:
According to the traffic identifier in the encapsulated message of each bar PRBS code stream, and the default traffic identifier and the mapping relations of chip port, the encapsulated message of each bar PRBS code stream is forwarded to the chip port of correspondence.
10. chip as claimed in claim 8 is characterized in that, described forwarding engine module also comprises:
Second receiving element is used to receive the encapsulated message of the PRBS code stream of each chip port loopback.
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| CN201110047592.9A CN102183722B (en) | 2011-02-28 | 2011-02-28 | Chip |
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Cited By (1)
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|---|---|---|---|---|
| CN102420982A (en) * | 2011-10-31 | 2012-04-18 | 展讯通信（上海）有限公司 | Chip, checking method and system thereof, and processor end |
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