CN101599820B - Data description method of serial transmission interface and correlated grouping and testing system thereof - Google Patents
Data description method of serial transmission interface and correlated grouping and testing system thereof Download PDFInfo
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- CN101599820B CN101599820B CN 200810109888 CN200810109888A CN101599820B CN 101599820 B CN101599820 B CN 101599820B CN 200810109888 CN200810109888 CN 200810109888 CN 200810109888 A CN200810109888 A CN 200810109888A CN 101599820 B CN101599820 B CN 101599820B
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Abstract
The invention relates to a data description method of a serial transmission interface and a correlated grouping and testing system thereof. The method comprises the following steps: synchronously generating low-speed transmission data and high-speed transmission data; sampling the low-speed transmission data according to a first sampling frequency in a special time interval to generate a first sampling result; sampling the high-speed transmission data according to a second sampling frequency in the special time interval to generate a second sampling result; and combining the first sampling result and the second sampling result to describe contents corresponding to the low-speed transmission data and the high-speed transmission data in the special time interval, wherein the second sampling frequency is greater than the first sampling frequency.
Description
Technical field
The present invention relates to a kind of data description method and associated packets and test macro that is used for a serial coffret; Relate in particular to a kind of the minimizing and describe the required bit number of low speed transmissions data, and promote data description method and the associated packets and the test macro of whole efficiency.
Background technology
Along with the radio communication service of higher frequency range is day by day popularized, audio frequency and video are transmitted in the mobile communication use and have obtained to use widely.Along with the application of multimedia mobile terminal product is tending towards diversification, the demand of transmitting bandwidth also strengthens gradually.Tradition audio frequency and video coffret adopts the framework of parallel (Parallel) fully usually, transmits data through multi-path.Yet; Bit number increase along with audio, video data; If adopt the way of expansion parallel bus width, except meeting causes wiring quantity to increase and reduces the service efficiency of space, the increase of signal frequency also can make the electromagnetic radiation of transmission increase the weight of and cause the problem of electromagnetic interference.
Therefore; In order to improve the problems referred to above, known technology has proposed different serial transmission interfaces, in order to the room for promotion service efficiency and reduce electromagnetic interference; One of them for move the industry processor interface (Mobile Industry Processor Interface, MIPI).When a mobile communications device adopted the coffret of serial transmission interface conduct and multimedia peripheral equipment, the factor of the required consideration of designer was a lot, comprises power consumption, signal frequency range, signal transmission distance, realization cost, noise sensitive degree and number of pins etc.Therefore, accomplish the design of mobile communications device as the designer after, essential through different testing procedures, environment etc., detect mobile communications device and whether meet requiredly, and do further optimization according to this.
For instance, please refer to Fig. 1, Fig. 1 is the sketch map that becomes known for a test macro 10 of a serial coffret 100.Test macro 10 is made up of a signal generator 102, a transmission unit 104 and 106 of receiving elements.Signal generator 102 is used for producing various signals type appearance (Pattern), and exports transmission unit 104 to through the serial or parallel mode.Transmission unit 104 is sent to receiving element 106 after being used for converting the signal type appearance that signal generator 102 is produced into meet serial transmission interface 100 preset form.When receiving element 106 is located in the mobile communications device, in order to receiving the signal type appearance that transmission units 104 are exported through serial transmission interface 100, and driven application AP_1～AP_n accordingly, then the designer can judge the usefulness of mobile communications device according to this.
Yet, in above-mentioned framework, when the signal type appearance that is produced when signal generator 102 is described the serial signal of a high low speed, can be used as sample frequency with a side of rapid speed.If both gaps between their growth rates are very big, when sample frequency was described slow signal faster, it is huge and too tediously long that the data of its low speed will seem.Please refer to Fig. 2 and Fig. 3, the sketch map of the high, low speed serial transmission signal that Fig. 2 is produced for signal generator 102, and Fig. 3 is the sketch map corresponding to the sampled result of Fig. 2.In Fig. 2, from top to bottom, HSS representes the high-speed transfer signal, and HSD representes high speed transmission data; HSC representes high-frequency clock, and LSS representes the low speed transmissions signal, and LSD representes the low speed transmissions data; LSC representes low-speed clock, and HLSC representes high low speed switch-over control signal, and SS representes the speed switch data; SP representes sampled point, and SD representes serial data, and SC representes serial clock.Wherein, HSD, LSD, SS are the signal type appearance that signal generator 102 is produced, and SD, SC are the form of serial transmission interface 100, and SS is used to switch SD and comes from HSD or LSD, and SS is used to switch SC simultaneously and comes from HSC or LSC.Therefore, can know that when describing the serial signal of high low speed, known technology is used as sample frequency with a side of rapid speed and is described slow signal, thereby causes the data of low speed will seem huge, and is too tediously long by Fig. 2 and Fig. 3.
Summary of the invention
Therefore, main purpose of the present invention promptly is to provide a kind of data description method and associated packets and test macro that is used for a serial coffret.
The present invention discloses a kind of data description method that is used for a serial coffret, includes synchronized generation one low speed transmissions data and a high speed transmission data; In a special time fragment, according to one first sample frequency, these low speed transmissions data of sampling are to produce one first sampled result; In this special time fragment, according to one second sample frequency, this high speed transmission data of sampling is to produce one second sampled result; And combine this first sampled result and this second sampled result, to describe corresponding to these low speed transmissions data of this special time fragment and the content of this high speed transmission data; Wherein this second sample frequency is greater than this first sample frequency.
The present invention also discloses a kind of test macro that is used for testing a communicator, includes a receiving element, is located in this communicator, is used for receiving a test-pattern; One transmission unit is used for exporting this test-pattern; One serial coffret is coupled between this receiving element and this transmission unit, is used for transmitting this test-pattern; One Date Conversion Unit is coupled to this transmission unit, is used for changing one and describes content, to produce this test-pattern; An and data processing equipment; Be coupled to this Date Conversion Unit; Be used for synchronized generation one low speed transmissions data and a high speed transmission data; In a special time fragment, sample these low speed transmissions data to produce one first sampled result according to one first sample frequency; In this special time fragment according to this high speed transmission data of one second sample frequency sampling producing one second sampled result, thereby and combine this first sampled result and this second sampled result to describe content and describe corresponding to these low speed transmissions data of this special time fragment and the content of this high speed transmission data to produce this; Wherein this second sample frequency is greater than this first sample frequency.
Description of drawings
Fig. 1 is the sketch map that becomes known for the test macro of a serial coffret.
The sketch map of the high, low speed serial transmission signal that Fig. 2 is produced for the signal generator of Fig. 1.
Fig. 3 is the sketch map corresponding to the sampled result of Fig. 2.
Fig. 4 is used for testing the sketch map of a test macro of a communicator for the embodiment of the invention.
Fig. 5 is the sketch map of a data description flow process of a data processing equipment among Fig. 4.
Fig. 6 is the sketch map of the high, low speed serial transmission signal that a data processing equipment is produced among Fig. 4.
Fig. 7 is the sketch map corresponding to the sampled result of Fig. 6.
Fig. 8 is the sketch map of two groups of high, low speed serial transmission signals that a data processing equipment is produced among Fig. 4.
Fig. 9 is the sketch map corresponding to the sampled result of Fig. 8.
Figure 10 is the sketch map of two groups of high, low speed serial transmission signals that a data processing equipment 408 is produced among Fig. 4.
Figure 11 is the sketch map corresponding to the sampled result of Figure 10.
[main element symbol description]
102 signal generators
104,402 transmission units
106,400 receiving elements
AP_1～AP_n uses
10,40 test macros
404 serial transmission interfaces
406 Date Conversion Units
408 data processing equipments
HSS high-speed transfer signal
The HSD high speed transmission data
The HSC high-frequency clock
LSS low speed transmissions signal
LSD low speed transmissions data
The LSC low-speed clock
The high low speed switch-over control signal of HLSC
SS speed switch data
The SP sampled point
The SD serial data
The SC serial clock
CM clock module signal
CMD clock module data
DSC data switch-over control signal
DS data switching controls data
CSC clock switch-over control signal
CS clock switch data
50 flow processs
500,502,504,506,508,510 steps
Embodiment
Please refer to Fig. 4, Fig. 4 is used for testing the sketch map of a test macro 40 of a communicator for the embodiment of the invention.Test macro 40 includes a receiving element 400, a transmission unit 402, a serial coffret 404, a Date Conversion Unit 406 and a data processing equipment 408.In test macro 40; Data processing equipment 408 is used for producing one and describes content; And after Date Conversion Unit 406 will describe content and convert a test-pattern into; Transmission unit 402 is understood be sent to receiving element 400 through serial transmission interface 404 with test-pattern, and the receiving element of then being located in the communicator 400 is understood driven application AP_1～AP_n accordingly, makes the designer can judge the usefulness of communicator according to this.
Further, please refer to Fig. 5, Fig. 5 is the sketch map of a data description flow process 50 of data processing equipment 408 among Fig. 4.Data description flow process 50 is described content in order to produce, and it comprises following steps:
Step 500: beginning.
Step 502: synchronized generation one low speed transmissions data and a high speed transmission data.
Step 504: in a special time fragment, according to one first sample frequency, these low speed transmissions data of sampling are to produce one first sampled result.
Step 506: in this special time fragment, according to one second sample frequency, this high speed transmission data of sampling is to produce one second sampled result.
Step 508: combine this first sampled result and this second sampled result, to describe corresponding to these low speed transmissions data of this special time fragment and the content of this high speed transmission data.
Step 510: finish.
According to flow process 50, when data processing equipment 408 produces the description content, data processing equipment 408 first synchronized generation one low speed transmissions data and high speed transmission datas.Then, in a special time fragment, the present invention is according to first sample frequency, sampling low speed transmissions data, and producing first sampled result, and according to second sample frequency, the sampling high speed transmission data is to produce second sampled result.At last, the present invention combines first sampled result and second sampled result, to describe corresponding to the low speed transmissions data of special time fragment and the content of high speed transmission data.In brief; When content was described in output, the present invention sampled to low speed transmissions data and high speed transmission data with the different sample frequency, preferably; First sample frequency is corresponding to the transmission rate of low speed transmissions data, and second sample frequency is then corresponding to the transmission rate of high speed transmission data.Under this situation, the sampled result of low speed transmissions data representes that with serial mode the sampled result of high speed transmission data is then represented with parallel mode.In other words, the bit number that sampled result comprised of low speed transmissions data can reduce effectively.
In known technology, when describing the serial signal of high low speed, known technology is used as sample frequency with a side of rapid speed and is described slow signal, thereby causes the data of low speed will seem huge, and is too tediously long.In comparison, through flow process 50, data processing equipment 408 is represented the sampled result of low speed transmissions data with serial mode, and representes the sampled result of high speed transmission data to make that describing the required bit number of low speed transmissions data is able to reduce with parallel mode.
For instance, please refer to Fig. 6 and Fig. 7, the sketch map of the high, low speed serial transmission signal that Fig. 6 is produced for data processing equipment 408, and Fig. 7 is the sketch map corresponding to the sampled result of Fig. 6, the description content that Fig. 7 is also produced for data processing equipment 408.For clearly demonstrating spirit of the present invention, identical among employed symbol definition and Fig. 2 and Fig. 3 among Fig. 6 and Fig. 7.Wherein, HSD, LSD, SS are the signal type appearance that Date Conversion Unit 406 is produced, and SD, SC are the form of serial transmission interface 404, and SS is used to switch SD and comes from HSD or LSD, and SS is used to switch SC simultaneously and comes from HSC or LSC.。Can be known that by Fig. 6 high speed transmission data is described with sample frequency faster, the low speed transmissions data then are to describe with slower sample frequency.Therefore; In Fig. 7; The bit number that field comprised corresponding to the sampled result of low speed transmissions data obviously is less than the bit number that field comprised corresponding to the sampled result of high speed transmission data; And the sampled result of low speed transmissions data representes that with serial mode the sampled result of high speed transmission data is then represented with parallel mode.Under this situation, describe the required bit number of low speed transmissions data except reducing, owing to the sampled result of high speed transmission data is then represented with parallel mode, make Date Conversion Unit 406 can have the more time to handle sampled result, to promote whole efficiency.
Through flow process 50; When data processing equipment 408 is described the serial signal of high, low speed; The present invention describes the serial signal of high, low speed respectively with different sample frequencys; Make the sampled result of low speed transmissions data represent with serial mode, the sampled result of high speed transmission data is then represented with parallel mode.Thus, describing the required bit number of low speed transmissions data is able to significantly reduce.What pay special attention to is, Fig. 6 and Fig. 7 situation during in order to declarative description one high-speed serial signals and a low-speed serial signal, and certainly, this area tool knows that usually the knowledgeable also can apply the present invention to different field according to required.For instance, please refer to Fig. 8 and Fig. 9, the sketch map of two groups of high, low speed serial transmission signals that Fig. 8 is produced for data processing equipment 408, and Fig. 9 is the sketch map corresponding to the sampled result of Fig. 8.Employed symbol definition is roughly with aforementioned identical among Fig. 8 and Fig. 9; Difference is that " 1 " among Fig. 8 and Fig. 9, " 2 " represent the serial transmission signal corresponding to first or second group of high, low speed respectively; For example; HSS1 representes first group of high-speed transfer signal, and HSS2 representes second group of high-speed transfer signal, by that analogy.
Can know by Fig. 8 and Fig. 9; High speed transmission data is described with sample frequency faster; The low speed transmissions data then are to describe with slower sample frequency, therefore, obviously are less than the bit number that field comprised corresponding to the sampled result of high speed transmission data corresponding to the bit number that field comprised of the sampled result of low speed transmissions data; And the sampled result of low speed transmissions data representes that with serial mode the sampled result of high speed transmission data is then represented with parallel mode.
In addition, please refer to Figure 10 and Figure 11, the sketch map of two groups of high, low speed serial transmission signals that Figure 10 is produced for data processing equipment 408, and Figure 11 is the sketch map corresponding to the sampled result of Figure 10.Employed symbol definition is roughly identical with Fig. 6 and Fig. 7 among Figure 10 and Figure 11; Difference is that Figure 10 and Figure 11 comprise following signal: CM in addition and represent the clock module signal; CMD representes the clock module data, and DSC representes the data switch-over control signal, and DS representes data switching controls data; CSC representes the clock switch-over control signal, and CS representes the clock switch data.Wherein, HSD1, LSD1, HSD2, LSD2, CMD, CS, SS are the signal type appearance that Date Conversion Unit 406 is produced; SD1, SD2, SC are the form of serial transmission interface 404; DS is used to switch SD1 and comes from HSD1 or LSD1, and DS is used to switch SD2 simultaneously and comes from HSD2 or LSD2, and CS is used to switch SC and comes from HSC or CMD.Same; Can be known that by Figure 10 and Figure 11 high speed transmission data is described with sample frequency faster, the low speed transmissions data then are to describe with slower sample frequency; Therefore; The bit number that field comprised corresponding to the sampled result of low speed transmissions data obviously is less than the bit number that field comprised corresponding to the sampled result of high speed transmission data, and the sampled result of low speed transmissions data representes that with serial mode the sampled result of high speed transmission data is then represented with parallel mode.
In sum, the present invention describes high speed transmission data with sample frequency faster, and describes the low speed transmissions data with slower sample frequency.Therefore; The bit number that field comprised corresponding to the sampled result of low speed transmissions data obviously is less than the bit number that field comprised corresponding to the sampled result of high speed transmission data; And the sampled result of low speed transmissions data representes that with serial mode the sampled result of high speed transmission data is then represented with parallel mode.Under this situation, describe the required bit number of low speed transmissions data except reducing, owing to the sampled result of high speed transmission data is then represented with parallel mode, make Date Conversion Unit can have the more time to handle sampled result, to promote whole efficiency.
The above is merely the preferred embodiments of the present invention, and the equalization that all scopes that requires to protect according to the present invention are done changes and modifies, and all should belong to covering scope of the present invention.
Claims (10)
1. data description method that is used for a serial coffret includes:
Synchronized generation one low speed transmissions data and a high speed transmission data;
In a special time fragment, according to one first sample frequency, these low speed transmissions data of sampling are to produce one first sampled result;
In this special time fragment, according to one second sample frequency, this high speed transmission data of sampling is to produce one second sampled result; And
In conjunction with this first sampled result and this second sampled result, to describe corresponding to these low speed transmissions data of this special time fragment and the content of this high speed transmission data;
Wherein this second sample frequency is greater than this first sample frequency.
2. the method for claim 1, wherein this first sampled result includes the Bit data of one first quantity, and this second sampled result includes the Bit data of one second quantity, and this second quantity is greater than this first quantity.
3. method as claimed in claim 2, wherein this first quantity is 1.
4. method as claimed in claim 2, wherein this first sampled result is represented the Bit data of this first quantity with serial mode.
5. method as claimed in claim 2, wherein this second sampled result is represented the Bit data of this second quantity with parallel mode.
6. test macro that is used for testing a communicator includes:
One receiving element is located in this communicator, is used for receiving a test-pattern;
One transmission unit is used for exporting this test-pattern;
One serial coffret is coupled between this receiving element and this transmission unit, is used for transmitting this test-pattern;
One Date Conversion Unit is coupled to this transmission unit, is used for changing one and describes content, to produce this test-pattern; And
One data processing equipment; Be coupled to this Date Conversion Unit; Be used for synchronized generation one low speed transmissions data and a high speed transmission data; In a special time fragment according to these low speed transmissions data of one first sample frequency sampling producing one first sampled result, in this special time fragment according to this high speed transmission data of one second sample frequency sampling, to produce one second sampled result; And combine this first sampled result and this second sampled result, thereby describe corresponding to these low speed transmissions data of this special time fragment and the content of this high speed transmission data with this description content of generation;
Wherein this second sample frequency is greater than this first sample frequency.
7. test macro as claimed in claim 6, wherein this first sampled result includes the Bit data of one first quantity, and this second sampled result includes the Bit data of one second quantity, and this second quantity is greater than this first quantity.
8. test macro as claimed in claim 7, wherein this first quantity is 1.
9. test macro as claimed in claim 7, wherein this first sampled result is represented the Bit data of this first quantity with serial mode.
10. test macro as claimed in claim 7, wherein this second sampled result is represented the Bit data of this second quantity with parallel mode.
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| CN 200810109888 CN101599820B (en) | 2008-06-05 | 2008-06-05 | Data description method of serial transmission interface and correlated grouping and testing system thereof |
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| US20150204920A1 (en) * | 2012-08-17 | 2015-07-23 | Mitsubishi Electric Corporation | Electric-quantity measuring apparatus and electric-quantity measuring method |
| CN105306380B (en) * | 2014-07-17 | 2018-08-17 | 炬芯（珠海）科技有限公司 | Data transmission method and its device and application |
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Granted publication date: 20121212 Termination date: 20140605 |