CN1284064C - Universal FIFO interface testing equipment and system - Google Patents
Universal FIFO interface testing equipment and system Download PDFInfo
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- CN1284064C CN1284064C CN 200410071173 CN200410071173A CN1284064C CN 1284064 C CN1284064 C CN 1284064C CN 200410071173 CN200410071173 CN 200410071173 CN 200410071173 A CN200410071173 A CN 200410071173A CN 1284064 C CN1284064 C CN 1284064C
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Abstract
The present invention discloses a universal First-In First-Out (FIFO) interface test device and a universal FIFO interface test system. The interface test device comprises a PCI interface module and a user interface module, wherein the user interface module comprises a unit for decoding PCI commands, a bus address unit, a writing operation unit and a read operation unit. The FIFO interface test system of the present invention comprises an FIFO interface test device and a computer, wherein the computer comprises a dynamic writing module, a dynamic read module, a static writing module, a static read module, a time interval arrangement module, a state read module and a judgment module. The present invention can carry out dynamic and static read-write test for the FIFO interface of a user device, and can also adjust the speed for sending data. The FIFO interface test device and the FIFO interface test system of the present invention have universality, and do not depend on the user device, so the FIFO interface can be tested at any development and design stage of the user device, and the development and design schedule of the user device is accelerated.
Description
Technical field
The present invention relates to a kind of testing apparatus, more particularly, relate to a kind of Universal FIFO interface testing equipment and system that can test fifo interface.
Background technology
In all kinds design of electronic devices, usually can need equipment to have fifo interface, but the test of designed fifo interface is very difficult.To having the fifo interface of output function, after equipment is sent data into fifo interface, whether data are correctly sent into, can only simply test by oscillograph or logic analyser at present, and for further function, the performance test of need transferring large number of data, only after the relevant device that can to data in FIFO the read development supporting with it finished, could carry out effectively, and this relevant equipment development can cause bad influence to the Development Schedule of equipment; For fifo interface, before supporting with it relevant device development that data can be write among the FIFO is finished, almost be impossible to the test of fifo interface with input function.
Summary of the invention
The object of the present invention is to provide Universal FIFO interface testing equipment and the system of a kind of invention based on PC.
To achieve these goals, the invention provides a kind of Universal FIFO interface testing equipment, be connected between the pci bus and user's fifo interface of computing machine, comprising: a pci interface module is used for and being connected of computer PCI bus; A Subscriber Interface Module SIM is used for and being connected of user's fifo interface;
Wherein, described Subscriber Interface Module SIM comprises: the pci command decoding unit is used for converting pci command to Subscriber Interface Module SIM and the discernible command format of user's fifo interface; The bus addressing unit is used to seek the address of the computer register of store data; Write operation unit is used for data are write the subscriber equipment of being with fifo interface; The read operation unit is used for from user's fifo interface reading of data.
Described pci interface module is the standard pci interface chip.
Described pci interface module is by forming as lower module: PCI logic core module is used for the session with pci bus; The bus configuration module is used to realize the configuration space of pci bus.
Described equipment is realized with fpga chip.
Utilize above-mentioned fifo interface testing apparatus, the present invention also provides a kind of fifo interface test macro, be used to test user's fifo interface, comprise a computing machine and an aforesaid fifo interface testing apparatus, this fifo interface testing apparatus is connected by pci bus with computing machine.Described computing machine comprises: the type selecting module is used for selecting the fifo interface 40 of subscriber equipment is carried out dynamic test or static test according to user instruction; Mode is selected module, is used for selecting to send data still from the fifo interface 40 reception Data Dynamic writing modules of subscriber equipment to the fifo interface 40 of subscriber equipment according to user instruction, is used for sending a dynamic write order to described fifo interface testing apparatus; Dynamically read through model is used for sending a dynamic read command to described fifo interface testing apparatus; Static writing module is used for sending a static write order to described fifo interface testing apparatus; Static read through model is used for sending a static read command to described fifo interface testing apparatus; The time interval is provided with module, is used for the time interval that dynamically read-write process packet sends or receives; The state read module is used to read the also state of explicit user fifo interface; Judge module is used to judge that whether the state of user's fifo interface is more than or equal to half-full.
Fifo interface testing apparatus of the present invention and system can carry out dynamic and static readwrite tests to the fifo interface of subscriber equipment, and can regulate the data transmission speed, thereby the fifo interface of subscriber equipment is comprehensively tested.Fifo interface testing apparatus of the present invention and system have versatility, do not rely on subscriber equipment, therefore can test its fifo interface in any development and the design phase of subscriber equipment, have improved the development and the design schedule of subscriber equipment.
Description of drawings
Fig. 1 be fifo interface testing apparatus of the present invention the application scenarios synoptic diagram;
Fig. 2 is an embodiment of fifo interface testing apparatus of the present invention;
Fig. 3 is another embodiment of fifo interface testing apparatus of the present invention;
Fig. 4 adopts the fifo interface test flow chart of fifo interface testing apparatus of the present invention to subscriber equipment.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
As shown in Figure 1, fifo interface testing apparatus 20 of the present invention the time is connected between the fifo interface 40 of the pci bus 10 of computing machine and subscriber equipment in work.This fifo interface testing apparatus 20 is configured as the form of plug-in card at last, thereby can directly be inserted on the pci bus 10 of computing machine.Be connected with cable 30 between the fifo interface 40 of this fifo interface testing apparatus 20 and subscriber equipment, this cable 30 comprises data line, read-write control line and condition line, so that data signal, control signal and status signal between interface testing equipment 20 and fifo interface 40, this point will describe in detail hereinafter.
Fig. 2 has particularly illustrated an embodiment of fifo interface testing apparatus 20 of the present invention in the empty frame in Fig. 2.In this embodiment, testing apparatus 20 comprises a pci interface module 21 and a Subscriber Interface Module SIM 22.The PCIlogicCORE (PCI logic nuclear) that pci interface module 21 can adopt existing standard pci interface chip or Xilinx company to provide realizes, is used for and the session of pci bus 10 and the configuration of pci bus 10.Subscriber Interface Module SIM 22 mainly is to be used to realize user interface function, comprise decoding from the pci signal of pci interface module 21, drive this equipment work, and produce online interface signal between this testing apparatus 20 and the test target (being the fifo interface 40 of subscriber equipment).Pci interface module 21 and Subscriber Interface Module SIM 22 can be realized with fpga chip.
As shown in Figure 2, communicate by letter with two-way control line 72 by bidirectional data line 71 between the pci interface module 21 of interface testing equipment 20 of the present invention and the computer PCI bus; Communicate by letter by bidirectional lines 23 between pci interface module 21 and the Subscriber Interface Module SIM 22, to transmit order, data, control and/or status signal; Between the fifo interface 40 of Subscriber Interface Module SIM 22 and subscriber equipment by bidirectional data line 31, read-write control line 32 and State Control line 33 so that between the fifo interface 40 of Subscriber Interface Module SIM 22 and subscriber equipment data signal, read-write control signal and station status signal.Bidirectional data line 31, read-write control line 32 and State Control line 33 all are included in the cable 30 among Fig. 1.
In fact, as well known for one of skill in the art, the pci interface module 21 among Fig. 2 can realize with two functional modules, and module is used for the session with pci bus, and another module is used for the configuration of pci bus.In view of the above, Fig. 3 has particularly illustrated another embodiment of fifo interface testing apparatus 20 of the present invention in the empty frame in Fig. 3.In this embodiment, testing apparatus 20 comprises PCI logic core module 211, bus configuration module 212 and Subscriber Interface Module SIM 22.Wherein, PCI logic core module 211 is responsible for the session with pci bus 10, and all pci signals all will be encapsulated by it, and the user can't directly visit; Bus configuration module 212 is used to realize the configuration space of pci bus, and its function is that whole PCI equipment is carried out register configuration, and wherein the most key pci configuration space comprises: device id and publisher's ID, and base address register, the PCI configuration is first-class.Realize that with PCI logic core module 211 and bus configuration module 212 pci interface module 21 benefits among Fig. 2 are: Subscriber Interface Module SIM 22 can be reinstated a fpga chip with PCI logic core module 211 and bus configuration module 212 1 and realize, logic function according to each module realizes logical design, reduces the simplified design difficulty.
The fpga chip of realizing interface testing equipment 20 among Fig. 3 is to utilize the disclosed IP kernel PCI of Xilinx company logic nuclear (PCI logiCORE) technology, IP kernel is the method that fairly simple realization has mature modules now, program by the IP kernel design has generally all obtained comparatively deep optimization, and it is the difficulty of simplified design greatly.The final design of the present invention realizes, just has been to use IP kernel, by its parameter and port are configured, realizes the main logical design of pci interface.As shown in Figure 3, after finishing all fpga chip logical designs,, and after powering up by power module 60, can constitute integrated circuit with special function by FPGA configuration data download interface 50.
As shown in Figure 3, communicate by letter with two-way control line 72 by bidirectional data line 71 between the PCI logic core module 211 of interface testing equipment 20 of the present invention and the computer PCI bus; Unidirectional control line 24 communications between PCI logic core module 211 and the bus configuration module 212; Communicate by letter by bidirectional lines 23 between PCI logic core module 211 and the Subscriber Interface Module SIM 22, to transmit order, data, control and/or status signal; Between the fifo interface 40 of Subscriber Interface Module SIM 22 and subscriber equipment by bidirectional data line 31, read-write control line 32 and State Control line 33 so that between the fifo interface 40 of Subscriber Interface Module SIM 22 and subscriber equipment data signal, read-write control signal and station status signal.Bidirectional data line 31, read-write control line 32 and State Control line 33 all are included in the cable 30 among Fig. 1.
Subscriber Interface Module SIM 22 among Fig. 2 and Fig. 3 is used to realize the user interface function with FIFO, mainly comprises: to decoding from the pci signal of pci interface module 21 (Fig. 2) or PCI logic core module 211 (Fig. 3), drive 20 work of this equipment; Online interface signal between the fifo interface 40 of this equipment of generation 20 and subscriber equipment comprises data line 31, read-write control line 32 and State Control line 33.
In order to realize above-mentioned functions, Subscriber Interface Module SIM 22 generally comprises with lower unit:
Pci command decoding unit: convert pci command to command format that the fifo interface 40 of Subscriber Interface Module SIM 22 and subscriber equipment can be discerned;
Bus addressing unit: the address of seeking the computer register of store data;
Write operation unit: the subscriber equipment that data is write the band fifo interface;
Read operation unit: from the fifo interface reading of data of subscriber equipment.
When interface testing equipment 20 of the present invention is worked, Subscriber Interface Module SIM 22 receives the pci command that comes from pci interface module 21 (Fig. 2) or PCI logic core module 211 (Fig. 3), by the pci command decoding unit pci command is decoded, be converted to the command format that the fifo interface 40 of Subscriber Interface Module SIM 22 and subscriber equipment can be discerned, according to the order of gained, finish next step operation.If this pci command is the read operation order, then in computing machine, seek available register, this register is directly linked to each other with the fifo interface 40 of subscriber equipment, then the data in the fifo interface 40 of subscriber equipment are read in this register of computing machine.If this order is the write operation order, then in computing machine, search the register address of waiting to transmit the data place, then this register is directly linked to each other with the fifo interface 40 of subscriber equipment, the data in this register are write the fifo interface 40 of subscriber equipment.
Interface testing equipment 20 of the present invention respectively with after the fifo interface 40 of the pci bus 10 of computing machine and subscriber equipment is connected, can be carried out the test to the fifo interface 40 of subscriber equipment.A complete test macro also needs to comprise the computing machine that is connected by pci bus 10 with interface testing equipment 20, and in general, this computing machine that has specific program need be achieved as follows module:
The type selecting module is used for selecting the fifo interface 40 of subscriber equipment is carried out dynamic test or static test according to user instruction;
Mode is selected module, is used for selecting still to receive data from the fifo interface 40 of subscriber equipment to the fifo interface 40 transmission data of subscriber equipment according to user instruction;
Dynamically writing module is used for sending a dynamic write order to interface testing equipment 20;
Dynamically read through model is used for sending a dynamic read command to interface testing equipment 20;
Static writing module is used for sending a static write order to interface testing equipment 20;
Static read through model is used for sending a static read command to interface testing equipment 20;
The time interval is provided with module, is used for the time interval that dynamically read-write process packet sends or receives;
The state read module is used to read the also state of the fifo interface 40 of explicit user equipment;
Judge module, whether the state of fifo interface 40 that is used to judge subscriber equipment is more than or equal to half-full.
According to interface testing equipment 20 of the present invention and with test macro that computing machine is formed carry out subscriber equipment fifo interface 40 tests flow process as shown in Figure 4.In Fig. 4, at first by the original state of the fifo interface 40 of the state read module explicit user equipment in the computing machine, select the selection of module then by type selecting module and mode by the user, start dynamic writing module, dynamically a module in read through model, static writing module or the static read through model to be sending corresponding order to interface testing equipment 20, corresponding dynamic is write, is dynamically read, static state is write or static state is read test process thereby start.Below in conjunction with Fig. 4 these four kinds of test processs are described in detail.
1) test process that writes of static data
Computing machine sends a static write order by pci bus 10, this order is passed to Subscriber Interface Module SIM 22 by pci interface module 21 (Fig. 2) or PCI logic core module 211 (Fig. 3), the decoding pci command unit decodes pci command of Subscriber Interface Module SIM 22, draw is after the static write order, write operation unit in the Subscriber Interface Module SIM 22 is passed to PCI logic core module 211 with the data in the related register by the data line 71 between computer PCI bus 10 and the PCI logic core module 211, bidirectional lines 23 by 22 of PCI logic core module 211 and Subscriber Interface Module SIMs is passed to Subscriber Interface Module SIM 22 and is realized write operation, promptly by the fifo interface 40 of the data line 31 between the fifo interface 30 of Subscriber Interface Module SIM 22 and subscriber equipment with data write-once subscriber equipment.The fifo interface 40 of subscriber equipment shows real-time status information (full, half-full, non-NULL) under the effect of computing machine display module.
2) test process read of static data
Computing machine sends a static read command by pci bus 10, this order is passed to Subscriber Interface Module SIM 22 by pci interface module 21 (Fig. 2) or PCI logic core module 211 (Fig. 3), the decoding pci command unit decodes pci command of Subscriber Interface Module SIM 22, draw is after the static read command, status information in the fifo interface 30 of subscriber equipment and data once pass to Subscriber Interface Module SIM 22 by the data line 31 between the fifo interface 40 of the condition line 33 between the fifo interface 30 of Subscriber Interface Module SIM 22 and subscriber equipment and Subscriber Interface Module SIM 22 and subscriber equipment respectively, and can show the data content and the status information of reception.
3) test process that writes of dynamic data
Computing machine sends a dynamic write order by pci bus 10, this order is passed to Subscriber Interface Module SIM 22 by pci interface module 21 (Fig. 2) or PCI logic core module 211 (Fig. 3), the decoding pci command unit decodes pci command of Subscriber Interface Module SIM 22, draw is after the dynamic write order, write operation unit in the Subscriber Interface Module SIM 22 is passed to PCI logic core module 211 with the data in the related register by the data line 71 between computer PCI bus 10 and the PCI logic core module 211, bidirectional lines 23 by 22 of PCI logic core module 211 and Subscriber Interface Module SIMs is passed to Subscriber Interface Module SIM 22, carries out write operation.The fifo interface of subscriber equipment has status information (full, half-full, non-NULL) 40 this moments, by the judge module of computing machine these status informations is judged.When status information when being half-full or full, subscriber equipment is reading of data from the fifo interface 40 of subscriber equipment constantly, meanwhile, and under the effect of computing machine sending module, data constantly in the register from computing machine the fifo interface 40 to subscriber equipment send, send until data and finish.Being provided with in the module in the time interval of computing machine can also the setting data transmission time interval, to adjust the average transmission speed that sends data, to reach adjustable-speed this purpose.
4) test process read of dynamic data:
Computing machine sends a dynamic read command by pci bus 10, this order is passed to Subscriber Interface Module SIM 22 by pci interface module 21 (Fig. 2) or PCI logic core module 211 (Fig. 3), the decoding pci command unit decodes pci command of Subscriber Interface Module SIM 22, draw is after the dynamic read command, the status information of the fifo interface 40 of the judge module test subscriber equipment in the computing machine, if be half-full or full this moment, then the read operation unit in the receiver module invoke user interface module 22 in the computing machine carries out read operation, data in the fifo interface 40 of subscriber equipment are passed to Subscriber Interface Module SIM 22 by the data line 31 between the fifo interface 40 of Subscriber Interface Module SIM 22 and subscriber equipment, and meanwhile subscriber equipment deposits data in to the fifo interface 40 of subscriber equipment.Data in Subscriber Interface Module SIM 22 are along the bidirectional lines 23 of 22 of PCI logic core module 211 and Subscriber Interface Module SIMs, PCI logic core module 211, the data line 71 between computer PCI bus 10 and the PCI logic core module 211 finally writes the reception file of appointment.This process is till data read finishes.Before the Data Dynamic readout begins, in the computing machine receiver module, preferably can also set and receive the data total amount.
Claims (5)
1, a kind of Universal FIFO interface testing equipment is connected between the pci bus and user's fifo interface of computing machine, it is characterized in that, comprising:
A pci interface module is used for and being connected of computer PCI bus;
A Subscriber Interface Module SIM is used for and being connected of user's fifo interface;
Described Subscriber Interface Module SIM comprises:
The pci command decoding unit is used for converting pci command to Subscriber Interface Module SIM and the discernible command format of user's fifo interface;
The bus addressing unit is used to seek the address of the computer register of store data;
Write operation unit is used for data are write the subscriber equipment of being with fifo interface;
The read operation unit is used for from user's fifo interface reading of data.
2, Universal FIFO interface testing equipment according to claim 1 is characterized in that, described pci interface module is the standard pci interface chip.
3, Universal FIFO interface testing equipment according to claim 1 is characterized in that, described pci interface module is by forming as lower module:
PCI logic core module is used for the session with pci bus;
The bus configuration module is used to realize the configuration space of pci bus.
4, Universal FIFO interface testing equipment according to claim 3 is characterized in that, described equipment is realized with fpga chip.
5, a kind of fifo interface test macro is used to test user's fifo interface, it is characterized in that, comprises a computing machine and a fifo interface testing apparatus, and this fifo interface testing apparatus is connected by pci bus with computing machine;
Described fifo interface testing apparatus comprises:
A pci interface module is used for and being connected of computer PCI bus;
A Subscriber Interface Module SIM is used for and being connected of user's fifo interface;
Wherein, described Subscriber Interface Module SIM comprises:
The pci command decoding unit is used for converting pci command to Subscriber Interface Module SIM and the discernible command format of user's fifo interface;
The bus addressing unit is used to seek the address of the computer register of store data;
Write operation unit is used for data are write the subscriber equipment of being with fifo interface;
The read operation unit is used for from user's fifo interface reading of data;
Described computing machine comprises:
The type selecting module is used for selecting the fifo interface (40) of subscriber equipment is carried out dynamic test or static test according to user instruction;
Mode is selected module, is used for selecting still to receive data from the fifo interface (40) of subscriber equipment to fifo interface (40) the transmission data of subscriber equipment according to user instruction;
Dynamically writing module is used for sending a dynamic write order to described fifo interface testing apparatus;
Dynamically read through model is used for sending a dynamic read command to described fifo interface testing apparatus;
Static writing module is used for sending a static write order to described fifo interface testing apparatus;
Static read through model is used for sending a static read command to described fifo interface testing apparatus;
The time interval is provided with module, is used for the time interval that dynamically read-write process packet sends or receives;
The state read module is used to read the also state of explicit user fifo interface;
Judge module is used to judge that whether the state of user's fifo interface is more than or equal to half-full.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410071173 CN1284064C (en) | 2003-12-30 | 2004-07-30 | Universal FIFO interface testing equipment and system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200310116060 | 2003-12-30 | ||
| CN200310116060.1 | 2003-12-30 | ||
| CN 200410071173 CN1284064C (en) | 2003-12-30 | 2004-07-30 | Universal FIFO interface testing equipment and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1637684A CN1637684A (en) | 2005-07-13 |
| CN1284064C true CN1284064C (en) | 2006-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200410071173 Expired - Fee Related CN1284064C (en) | 2003-12-30 | 2004-07-30 | Universal FIFO interface testing equipment and system |
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| CN (1) | CN1284064C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135985B (en) * | 2006-09-01 | 2010-08-25 | 鸿富锦精密工业（深圳）有限公司 | Computer data transmission speed testing system and method |
| CN102012948B (en) * | 2010-04-12 | 2012-08-29 | 中国科学院西安光学精密机械研究所 | Data real-time acquisition and storage system and method based on USB |
| CN102402482A (en) * | 2011-11-22 | 2012-04-04 | 北京星网锐捷网络技术有限公司 | Test system and method |
| CN106842002B (en) * | 2017-01-03 | 2019-05-14 | 航天科工防御技术研究试验中心 | A kind of asynchronous FIFO specific function test method |
| CN110780189B (en) * | 2019-09-23 | 2021-12-21 | 福州瑞芯微电子股份有限公司 | SDIO interface test equipment and method based on FPGA |
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