CN102183722B - Chip - Google Patents
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- CN102183722B CN102183722B CN201110047592.9A CN201110047592A CN102183722B CN 102183722 B CN102183722 B CN 102183722B CN 201110047592 A CN201110047592 A CN 201110047592A CN 102183722 B CN102183722 B CN 102183722B
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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 chip testing technology field, relate in particular to chip.
Background technology
In high speed design, in order to test the bit error rate of high-speed serial channel transmission, conventionally adopting PRBS(Pseudo-Random Binary Sequence, Pseudo-Random Binary Sequence) technology sends PRBS code stream and tests.Owing to producing the randomness of pattern, this technology is widely used in various tests and OAM(Operations, Administration and Maintenance, operation, management, maintenance) technology.GPON(Gigabit-capable Passive Optical Networks, Gigabit Passive Optical Network) and EPON(Ethernet Passive Optical Networks, E bit passive optical network) be in recent years popular optical fiber access technology, equipment is mainly divided into the OLT(Optical Line Terminal of local side, optical line terminal) and the ONU(Optical Network Unit of terminal, optical network unit) two kinds, the ONU chip of take is example, the current way in chip internal Embedded test function, mainly to adopt the PRBS test source disperseing, each PRBS test source produces a PRBS code stream corresponding to a port, adopt respectively a plurality of PRBS test sources to test respectively indivedual key ports of chip internal and module (Simulation with I P such as MAC and SerDes).
But, the PRBS test source that current method of testing need to be disperseed many places enables to control, result for verification also will be inquired about respectively, during test, can not cover completely the major avenues of approach of chip, but need to each port of chip, test one by one by various testing tools, testing efficiency is lower, and the test duration is longer, also the software and hardware link of test is proposed to higher requirement, directly cause testing cost higher.
Summary of the invention
The embodiment of the present invention provides a kind of chip, in order to improve chip testing efficiency, reduces chip testing cost, and this chip comprises:
PRBS test source module, for generating and send the encapsulated message of PRBS code stream, wherein, described PRBS test source module comprises: generation unit, for according to chip port quantity, produces the PRBS code stream of equal number; Encapsulation unit, for respectively each PRBS code stream being encapsulated, obtains the encapsulated message of each PRBS code stream; And transmitting element, for sending the encapsulated message of each PRBS code stream of acquisition;
Forwarding engine module, for being forwarded to corresponding chip port by the encapsulated message of each PRBS code stream of described PRBS test source module transmission;
Described PRBS test source module also comprises:
Receiving element, for receiving the encapsulated message of the PRBS code stream of each chip port loopback;
Verification unit, for carrying out verification to the encapsulated message of each PRBS code stream receiving.
In the chip of the embodiment of the present invention, PRBS test source module, according to chip port quantity, produces the PRBS code stream of equal number; Respectively each PRBS code stream is encapsulated, obtain the encapsulated message of each PRBS code stream; Send the encapsulated message of each PRBS code stream obtaining; The technical scheme that the PRBS test source disperseing with available technology adopting is tested respectively with module indivedual key ports of chip internal is compared, can provide disposable by the encapsulated message of all of the port of chip and complete many PRBS code streams of path testing, thereby significantly improve chip testing efficiency, save testing cost.
In the chip of the embodiment of the present invention, the PRBS test source module encapsulated message with PRBS code stream chip port number that provide is provided forwarding engine module; The encapsulated message of each PRBS code stream is forwarded to corresponding chip port; The technical scheme that the PRBS test source disperseing with available technology adopting is tested respectively with module indivedual key ports of chip internal is compared, encapsulated message that can disposable many PRBS code streams that PRBS test source module is provided is forwarded to the port that chip is corresponding, thereby all and path testing of chip is complete, can significantly improve chip testing efficiency, save testing cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.In the accompanying drawings:
Fig. 1 is the processing flow chart of embodiment of the present invention chips build-in-test method;
Fig. 2 is the processing flow chart of embodiment of the present invention chips build-in-test method;
Fig. 3 is the exemplary plot that embodiment of the present invention chips build-in-test method is applied to ONU chip;
Fig. 4 is the structural representation of PRBS test source module in the embodiment of the present invention;
Fig. 5 is the concrete enforcement schematic diagram of the PRBS test source module shown in Fig. 4 in the embodiment of the present invention;
Fig. 6 is the concrete enforcement schematic diagram of the PRBS test source module shown in Fig. 5 in the embodiment of the present invention;
Fig. 7 is the structural representation of embodiment of the present invention repeating engine modules;
Fig. 8 is the concrete enforcement schematic diagram of the forwarding engine module shown in Fig. 7 in the embodiment of the present invention;
Fig. 9 is the structural representation of embodiment of the present invention chips.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing, the embodiment of the present invention is described in further details.At this, schematic description and description of the present invention is used for explaining the present invention, but not as a limitation of the invention.
As shown in Figure 1, the treatment scheme of embodiment of the present invention chips build-in-test method can comprise;
The encapsulated message of each PRBS code stream that step 103, transmission obtain.
Flow process shown in Fig. 1 can be implemented by equipment or the module that can realize its function, and for example this equipment or module can be a PRBS test source module to be set in chip realize.The embodiment of the present invention be take PRBS test source module and is described as example.
Flow process can be learnt as shown in Figure 1, and PRBS test source module, according to chip port quantity, produces the PRBS code stream of equal number; Respectively each PRBS code stream is encapsulated, obtain the encapsulated message of each PRBS code stream; Send the encapsulated message of each PRBS code stream obtaining; The technical scheme that the PRBS test source disperseing with available technology adopting is tested respectively with module indivedual key ports of chip internal is compared, can provide disposable by the encapsulated message of all of the port of chip and complete many PRBS code streams of path testing, 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 present 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 Fig. 2 can be implemented by equipment or the module that can realize its function, and for example this equipment or module can be a forwarding engine module to be set in chip realize.The embodiment of the present invention be take forwarding engine module and is described as example.
Flow process can be learnt as shown in Figure 2, and in the embodiment of the present invention, the PRBS test source module encapsulated message with PRBS code stream chip port number that provide is provided forwarding engine module; The encapsulated message of each PRBS code stream is forwarded to corresponding chip port; The technical scheme that the PRBS test source disperseing with available technology adopting is tested respectively with module indivedual key ports of chip internal is compared, encapsulated message that can disposable many PRBS code streams that PRBS test source module is provided is forwarded to the port that chip is corresponding, thereby all and path testing of chip is complete, can significantly improve chip testing efficiency, save testing cost.
During concrete enforcement, can be in the embedded PRBS test source module of chip, for the N(N of chip, be greater than 1) individual port, produce N bar PRBS code stream, and can encapsulate according to being configured to each PRBS code stream, for example can carry out ETH(Ethernet, Ethernet) etc. network message encapsulation.The concrete packing forms that different PRBS code streams by using is different, to distinguish each PRBS code stream.
For example, respectively each PRBS code stream is being encapsulated, obtaining in the process of encapsulated message of each PRBS code stream, can, in the encapsulated message of each PRBS code stream, add characteristic of correspondence territory, to distinguish each PRBS code stream.Wherein, add property field and can adopt various ways, for example, in the encapsulated message of each PRBS code stream, add corresponding traffic identifier; Certainly can also be by adding different MAC(Media access control in implementing, medium access be controlled) address, VLAN(Virtual Bridged Local Area Networks, VLAN) mode such as sign adds property field.
During concrete enforcement, can establish the extremely forwarding of corresponding chip port of encapsulated message that a forwarding engine module is specifically implemented each PRBS code stream at chip internal, for example, aforementioned PRBS test source module can be carried out forwarding by offering forwarding engine module after the encapsulated message of each obtained PRBS code stream.
Concrete, can select different forwarding decisions for the encapsulated message of different PRBS code streams, the encapsulated message of each PRBS code stream is sent to corresponding chip port.Select the specific implementation of different forwarding decisions to have multiple, for example, can be before the encapsulated message of each PRBS code stream be forwarded to corresponding chip port, default different property fields and the mapping relations of chip port; When implement forwarding, can be according to the property field in the encapsulated message of each PRBS code stream, and the mapping relations of default property field and chip port, the encapsulated message of each PRBS code stream is forwarded to corresponding chip port.For example, when property field is that mode with traffic identifier is while being added in the encapsulated message of each PRBS code stream, can be according to the traffic identifier in the encapsulated message of each PRBS code stream, and the mapping relations of default traffic identifier and chip port, the encapsulated message of each PRBS code stream is forwarded to corresponding chip port.Like this, for each chip port, all there is the encapsulated message of a corresponding PRBS code stream to send, can realize the test to chip all of the port and path simultaneously.
During concrete enforcement, before the encapsulated message of each PRBS code stream is forwarded to corresponding chip port, can also comprise the process of the encapsulated message of each PRBS code stream being carried out to loopback verification, for example, by forwarding engine module, received the encapsulated message of the PRBS code stream of each chip port loopback, and be transmitted to PRBS test source module; PRBS test source module is carried out verification to the encapsulated message of each PRBS code stream receiving.The encapsulated message of many PRBS code streams can be received and verification simultaneously, and check results also can be recorded simultaneously, to promote the efficiency of the practice of verification and the promptness that lane testing result obtains.
On each chip port, can adopt the different modes such as cable loopback, optical fiber loopback, OLT loopback to realize loopback.The encapsulated message of the PRBS code stream sending from each port of chip so again can be by same port loopback chip internal.The encapsulated message of the PRBS code stream of loopback inside, can beam back PRBS test source module through aforementioned forwarding engine module and carry out verification.
When the encapsulated message of each PRBS code stream receiving is carried out to verification, can also comprise: the property field in the encapsulated message of each PRBS code stream receiving is identified; By different property fields, the encapsulated message number and the check results that send and/or receive are added up.For example, can identify the traffic identifier in the encapsulated message of each PRBS code stream receiving; By different traffic identifier, the encapsulated message number and the check results that send and/or receive are added up.Can count by different PRBS code streams like this encapsulated message number and the check results that send and/or receive, so that carry out follow-up data analysis, process, for example, can know easily the test result of each port of chip.
Fig. 3 has provided the example that the chip build-in-test method of the embodiment of the present invention is applied to an ONU chip.By Fig. 3, can be seen, in the ONU chip being 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 and encapsulates according to chip port quantity (n+1), and the encapsulated message of each PRBS code stream is offered to 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 in the embodiment of the present invention, are also provided, as described in the following examples.Because the principle that this PRBS test source module, forwarding engine module are dealt with problems with chip is similar to said chip build-in-test method, therefore the enforcement of this PRBS test source module, forwarding engine module and chip can, referring to the enforcement of chip build-in-test method, repeat part and repeat no more.
As shown in Figure 4, the PRBS test source module in the embodiment of the present invention can comprise:
Transmitting element 403, for sending the encapsulated message of each PRBS code stream of acquisition.
In an embodiment, encapsulation unit 402 is specifically used in the encapsulated message of each PRBS code stream, adds characteristic of correspondence territory, to distinguish each PRBS code stream.
In an embodiment, encapsulation unit 402 is specifically used in the encapsulated message of each PRBS code stream, adds corresponding traffic identifier.
As shown in Figure 5, in an embodiment, the PRBS test source module shown in Fig. 4 can also comprise:
Receiving element 501, for receiving the encapsulated message of the PRBS code stream of each chip port loopback;
As shown in Figure 6, in an embodiment, the PRBS test source module shown in Fig. 5 can also comprise:
Recognition unit 601, for identifying the property field of the encapsulated message of each PRBS code stream receiving;
Statistic unit 602, for by different property fields, adds up the encapsulated message number and the check results that send and/or receive.
In an embodiment, recognition unit 601 specifically can be for: the traffic identifier in the encapsulated message of each PRBS code stream receiving is identified;
Statistic unit 602 specifically can be for: by different traffic identifier, the encapsulated message number and the check results that send and/or receive are added up.
As shown in Figure 7, the forwarding engine module in the embodiment of the present invention can comprise:
The first receiving element 701, for receiving the encapsulated message with the PRBS code stream of chip port number;
The first retransmission unit 702, for being forwarded to corresponding chip port by the encapsulated message of each PRBS code stream of the first receiving element 701 receptions.
In an embodiment, the first retransmission unit 701 specifically can be for:
According to the property field in the encapsulated message of each PRBS code stream, and the mapping relations of default property field and chip port, the encapsulated message of each PRBS code stream is forwarded to corresponding chip port.
In an embodiment, the first retransmission unit 701 specifically can be for:
According to the traffic identifier in the encapsulated message of each PRBS code stream, and the mapping relations of default traffic identifier and chip port, the encapsulated message of each PRBS code stream is forwarded to corresponding chip port.
As shown in Figure 8, in an embodiment, the forwarding engine module shown in Fig. 7 can also comprise:
The second receiving element 801, for receiving the encapsulated message of the PRBS code stream of each chip port loopback;
The second retransmission unit 802, for forwarding the encapsulated message of each PRBS code stream of the second receiving element 801 receptions.
In an embodiment, the second receiving element 801 specifically can be 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 present invention can comprise:
PRBS test source module 901, for according to chip port quantity, produces the Pseudo-Random Binary Sequence PRBS code stream of equal number; Respectively each PRBS code stream is encapsulated, obtain the encapsulated message of each PRBS code stream; Send the encapsulated message of each PRBS code stream obtaining;
Forwarding engine module 902, for being forwarded to corresponding chip port by the encapsulated message of each PRBS code stream of PRBS test source module 901 transmissions.
In sum, in the embodiment of the present invention, PRBS test source module, according to chip port quantity, produces the PRBS code stream of equal number; Respectively each PRBS code stream is encapsulated, obtain the encapsulated message of each PRBS code stream; Send the encapsulated message of each PRBS code stream obtaining; The technical scheme that the PRBS test source disperseing with available technology adopting is tested respectively with module indivedual key ports of chip internal is compared, can provide disposable by the encapsulated message of all of the port of chip and complete many PRBS code streams of path testing, thereby significantly improve chip testing efficiency, effectively reduce the chip testing time, the requirement of reduction to the software and hardware link of test, saves testing cost.
In the embodiment of the present invention, the PRBS test source module encapsulated message with PRBS code stream chip port number that provide is provided forwarding engine module; The encapsulated message of each PRBS code stream is forwarded to corresponding chip port; The technical scheme that the PRBS test source disperseing with available technology adopting is tested respectively with module indivedual key ports of chip internal is compared, encapsulated message that can disposable many PRBS code streams that PRBS test source module is provided is forwarded to the port that chip is corresponding, thereby all and path testing of chip is complete, can significantly improve chip testing efficiency, effectively reduce the chip testing time, the requirement of reduction to the software and hardware link of test, saves testing cost.
The embodiment of the present invention can be accomplished all standing to the main business path of chip internal, and the soldered wires of chip board level application is accomplished to all standing, and system-level cable, optical fiber are accomplished to all standing.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to process flow diagram and/or the block scheme of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block scheme each flow process and/or the flow process in square frame and process flow diagram and/or 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, the instruction of carrying out by the processor of computing machine or other programmable data processing device is produced for realizing the device in the function of 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, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized 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 in computing machine or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computing machine or other programmable devices, thereby the instruction of carrying out is provided for realizing 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 on computing machine or other programmable devices.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a chip, is characterized in that, comprising:
PRBS test source module, for generating and send the encapsulated message of PRBS code stream, wherein, described PRBS test source module comprises: generation unit, for according to chip port quantity, produces the PRBS code stream of equal number; Encapsulation unit, for respectively each PRBS code stream being encapsulated, obtains the encapsulated message of each PRBS code stream; And transmitting element, for sending the encapsulated message of each PRBS code stream of acquisition;
Forwarding engine module, for being forwarded to corresponding chip port by the encapsulated message of each PRBS code stream of described PRBS test source module transmission;
Described PRBS test source module also comprises:
Receiving element, for receiving the encapsulated message of the PRBS code stream of each chip port loopback;
Verification unit, for carrying out verification to the encapsulated message of each PRBS code stream receiving.
2. chip as claimed in claim 1, is characterized in that, described encapsulation unit, also for the encapsulated message at each PRBS code stream, adds characteristic of correspondence territory, to distinguish each PRBS code stream.
3. chip as claimed in claim 1, is characterized in that, described encapsulation unit, also for the encapsulated message at each PRBS code stream, adds corresponding traffic identifier.
4. chip as claimed in claim 1, is characterized in that, in the encapsulated message of each PRBS code stream that receiving element receives, is added with characteristic of correspondence territory; Described PRBS test source module also comprises:
Recognition unit, for identifying the property field of the encapsulated message of each PRBS code stream receiving;
Statistic unit, for by different property fields, adds up the encapsulated message number and the check results that send and/or receive.
5. chip as claimed in claim 4, is characterized in that, described property field is added in the encapsulated message of each PRBS code stream in the mode of traffic identifier; Described recognition unit specifically for: the traffic identifier in the encapsulated message of each PRBS code stream receiving is identified;
Described statistic unit specifically for: by different traffic identifier, the encapsulated message number and the check results that send and/or receive are added up.
6. chip as claimed in claim 1, is characterized in that, described forwarding engine module comprises:
The first receiving element, for receiving the encapsulated message with the PRBS code stream of chip port number;
The first retransmission unit, for being forwarded to corresponding chip port by the encapsulated message of each PRBS code stream of described the first receiving element reception.
7. chip as claimed in claim 6, is characterized in that, in the encapsulated message of each PRBS code stream that the first receiving element receives, is added with characteristic of correspondence territory; Described the first retransmission unit specifically for:
According to the property field in the encapsulated message of each PRBS code stream, and the mapping relations of default property field and chip port, the encapsulated message of each PRBS code stream is forwarded to corresponding chip port.
8. chip as claimed in claim 7, is characterized in that, described property field is added in the encapsulated message of each PRBS code stream in the mode of traffic identifier; Described the first retransmission unit specifically for:
According to the traffic identifier in the encapsulated message of each PRBS code stream, and the mapping relations of default traffic identifier and chip port, the encapsulated message of each PRBS code stream is forwarded to corresponding chip port.
9. chip as claimed in claim 7, is characterized in that, described forwarding engine module also comprises:
The second receiving element, for receiving 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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| CN102420982B (en) * | 2011-10-31 | 2013-09-04 | 展讯通信（上海）有限公司 | Chip, checking method and system thereof, and processor end |
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| CN1760839A (en) * | 2004-10-12 | 2006-04-19 | 国际商业机器公司 | Apparatus, system, and method for facilitating port testing of a multi-port host adapter |
| US7359814B1 (en) * | 2000-02-07 | 2008-04-15 | Advantest | Multi-port analysis apparatus and method and calibration method thereof |
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| CN101645767A (en) * | 2009-08-28 | 2010-02-10 | 中国电子科技集团公司第四十一研究所 | K interface error code testing method and system thereof |
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| US6421624B1 (en) * | 1999-02-05 | 2002-07-16 | Advantest Corp. | Multi-port device analysis apparatus and method and calibration method thereof |
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|---|---|---|---|---|
| US7359814B1 (en) * | 2000-02-07 | 2008-04-15 | Advantest | Multi-port analysis apparatus and method and calibration method thereof |
| CN1760839A (en) * | 2004-10-12 | 2006-04-19 | 国际商业机器公司 | Apparatus, system, and method for facilitating port testing of a multi-port host adapter |
| CN101394678A (en) * | 2008-11-07 | 2009-03-25 | 烽火通信科技股份有限公司 | Serialization/de-serialization interface module generally used in GEPON/GPON |
| CN101645767A (en) * | 2009-08-28 | 2010-02-10 | 中国电子科技集团公司第四十一研究所 | K interface error code testing method and system thereof |
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