CN100471155C - Data output system, method and data output controller - Google Patents
Data output system, method and data output controller Download PDFInfo
- Publication number
- CN100471155C CN100471155C CNB2006100616856A CN200610061685A CN100471155C CN 100471155 C CN100471155 C CN 100471155C CN B2006100616856 A CNB2006100616856 A CN B2006100616856A CN 200610061685 A CN200610061685 A CN 200610061685A CN 100471155 C CN100471155 C CN 100471155C
- Authority
- CN
- China
- Prior art keywords
- module
- data
- data outputting
- outputting module
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
This invention discloses a data output system including: multiple data output modules capable of processing data, a data receiving module receiving data output by multiple data output modules, a bus connecting the data output modules and the receiving module, a control module connected with the output modules, a selection module used in selecting one from the output modules at the same time and allowing it to output data to the receiving module, in which, the control module controls the multiple data output modules after selecting said output module to allow outputting data by said module only. This invention also discloses a control device for data output and a data output method.
Description
Technical field
The present invention relates to the control circuit technical field, be specifically related to a kind of data output system, method and data output controller.
Background technology
Multiselect one control circuit is often used in electronic equipment, common usage is to arrive the function that realizes centralized multiselect one behind the same destination with one or more selectors from the signal that multiple source sends, and this implementation method is called centralized multiselect one control circuit.As shown in Figure 1, a kind of centralized multiselect one control circuit schematic diagram is provided, it comprises: a plurality of ply-yarn drills, a selector, an integrated circuit board, each ply-yarn drill is connected with selector respectively, and the signal that a plurality of ply-yarn drills send realizes that by after the control of selector each signal that constantly only has a ply-yarn drill to send outputs to receiving card.
Shown in Figure 2 is a kind of typical circuit figure of selector in the prior art, as shown in the figure, it comprises 3 pins, 8 input ports, an output port, this selector selects a road among input D0～D7 to export from the Y output port by A, B, three pins of C.For example, when CBA=000, will select D0 to export, when CBA=001, will select D1 to export from Y from Y, and the like, when CBA=111, will select D7 to export from Y.This selector is applicable to 8 situations with interior input source, will adopt the mode of multistage selection to realize the function of multiselect one when existing greater than 8 output sources.
Utilize selector realize multiselect one control circuit in the source more for a long time, have following defective:
1, when the source is more, there is the too much problem of cabling, when realizing multiselect one control circuit by selector, each source is to a passage must be arranged between the destination, when the number in source increases, for example 14,28 or more, will take a lot of passages, this just means in backboard will take a lot of pins, uses and will be restricted when the pin of backboard is nervous.
2, in this scheme, controller only has 8 source interfaces, when the source more for a long time, need utilize a plurality of selectors, adopt the mode of multipole selection, realize complicatedly, and may make mistakes easily.
Shown in Figure 3 is the implementation of another kind of multiselect one control circuit, and it comprises a plurality of ply-yarn drills and a receiving card, and a plurality of ply-yarn drills are connected with receiving card by bus, and the shared bus in all sources is established with software mode
Put a certain moment and have only certain source output.Can avoid the too much problem of cabling in first kind of scheme after adopting this mode, but exist software to make mistakes or the situation that multiple source is exported simultaneously can occur when being interfered, will damage device, can not really be implemented in a moment to export the signal in one tunnel source.
As seen, multiselect one control circuit of the prior art exists easily makes mistakes or is disturbed, and can not really be implemented in a moment to export the signal in one tunnel source.
Summary of the invention
Goal of the invention of the present invention is: a kind of data output system and method are provided, and guaranteeing only has an output source to output to destination at synchronization.
For realizing goal of the invention, the invention provides following technical scheme:
A kind of data output system is provided, comprises: a plurality of data outputting module, each described a plurality of data outputting module can be carried out the processing of data; Data reception module is used to receive the data by described a plurality of data outputting module outputs; Bus, each described a plurality of data outputting module is connected with described data reception module by described bus; Select module, be used for, adopt and select signal from described a plurality of data outputting module, to select a data output module, allow this data outputting module dateout of choosing to described data reception module at synchronization, and to the control module input select signal; Control module, be connected with described selection module with described a plurality of data outputting module, be used for after described selection module is selected this data outputting module of choosing, according to the selection signal of described selection module and the state of the described data outputting module of choosing, described a plurality of data outputting module are controlled the data outputting module dateout that only allows this to choose.
Described system also comprises: standby control module, be connected with described a plurality of data outputting module, under the control of this standby control module and described control module, each described a plurality of data outputting module is main with one of data outputting module or preliminary data output module at synchronization.
Described control module and described standby control module are locking device, and this locking device comprises control submodule and the lock-in line that links to each other with this control submodule.
Described control submodule is programmable logic device or discrete device.
The present invention also provides a data output-controlling device, comprising:
Select module, be used for, adopt and select signal from a plurality of data outputting module, to select a data output module, allow this data outputting module dateout of choosing to data reception module at synchronization, and to the control module input select signal; Control module, be connected with described selection module with a plurality of data outputting module, be used for after described selection module is selected this data outputting module of choosing, according to the selection signal of described selection module and the state of the described data outputting module of choosing, described a plurality of data outputting module are controlled the data outputting module dateout that only allows this to choose.
Described data control unit also comprises: standby control module, be connected with described a plurality of data outputting module, under the control of this standby control module and described control module, each described a plurality of data outputting module is main with one of data outputting module or preliminary data output module at synchronization.
Described control module and described standby control module are locking device, and this locking device comprises control submodule and the lock-in line that links to each other with this control submodule.
Described control submodule is: programmable logic device or discrete device.
The present invention also provides a kind of data transmission method, comprises step:
At synchronization, select module to adopt and select signal from a plurality of data outputting module, to select a data output module, and to the control module input select signal; After determining the described data outputting module of choosing, according to the selection signal of described selection module and the state of the described data outputting module of choosing, described a plurality of data outputting module are controlled, only allow the described data outputting module dateout of choosing; The described data outputting module of choosing arrives data reception module by the data transmission channel dateout.
Described at synchronization, select module to adopt and select signal from a plurality of data outputting module, to select a data output module specifically to comprise:
Forbid that described a plurality of data outputting module carries out data output; Utilize one to select signal to go to allow the data outputting module of this selection signal correspondence to carry out data output.
Described data transmission channel is: data/address bus is connected with described a plurality of data outputting module and data reception module.
Described according to the enable signal of selecting module and the state of described a plurality of data outputting module, described a plurality of data outputting module are controlled specifically comprise:, produce a locking signal according to the enable signal of selecting module and the state of described a plurality of data outputting module; Described locking signal is sent to described data outputting module; Utilize described locking signal that described data outputting module is locked.
Beneficial effect of the present invention is as follows:
1, the present invention adopts bus connecting mode, realize active output use same passage, reduced the cable tray of backboard;
2, utilize the master to realize lock function with lock-in line, other sources are in the lock state when being in the master with output in a source, guarantee that synchronization only has a source output, avoids exporting and conflicts;
3, utilize standby lock-in line to realize the backup of output source, realize fallback circuit, switch rapidly, reduced influence, improved the reliability of system system by hardware.
Description of drawings
Fig. 1 is a kind of centralized multiselect one control circuit schematic diagram in the prior art;
Fig. 2 is the circuit diagram of selector among Fig. 1;
Fig. 3 is the schematic diagram of another kind of multiselect one control circuit in the prior art;
Fig. 4 is a data output system schematic diagram among the present invention;
Fig. 5 is the specific implementation figure of control module in the output system of the present invention;
Fig. 6 is a kind of circuit diagram of control submodule among Fig. 5;
Fig. 7 is the internal control circuit state transition flow chart of control submodule among Fig. 6;
Fig. 8 is a main realization schematic diagram with lock-in line among Fig. 5;
Fig. 9 is the realization schematic diagram of standby lock-in line among Fig. 5;
Figure 10 is the another kind of implementation of control submodule among Fig. 5;
Figure 11 is a kind of concrete application of data output system of the present invention;
Figure 12 is the flow chart of data output method provided by the invention;
Figure 13 is the idiographic flow of step S1 among Figure 12;
Figure 14 is the idiographic flow of step S2 among Figure 12.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Key of the present invention is, the control module of being made up of lock-in line and control submodule is provided, the selection module that cooperation is realized by software, output signal for some data outputting module of selecting module to select, control module finally determines whether to allow described selected output signal to export to data reception module according to its current state, and when allowing output other unchecked data outputting module is locked.Thereby accurately realize at a time, only have the output signal of a data output module to export to data reception module.
Shown in Figure 4, be data output system schematic diagram of the present invention, it comprises:
A plurality of data outputting module, each described a plurality of data outputting module can be carried out the processing of data;
Data reception module is used to receive the data by described a plurality of data outputting module outputs;
Bus, each described a plurality of data outputting module is connected with described data reception module by described bus;
Control module is connected with described a plurality of data outputting module;
Select module, be used for, from described a plurality of data outputting module, select a data output module, and allow this data outputting module dateout to described data reception module at synchronization;
Wherein, after selecting described data outputting module, described control module is controlled described a plurality of data outputting module, only allows described data outputting module dateout.
Also comprise clock signal on the described bus.
As shown in Figure 5, in this data output system, described control module is a locking device, comprising: the control submodule is used lock-in line with the master who links to each other with this control submodule.This control module also comprises the standby lock-in line that links to each other with described control submodule.Described leading with lock-in line and standby lock-in line is respectively applied in system, when each described a plurality of data outputting module is in main usefulness or stand-by state, controls described a plurality of data outputting module, and described a plurality of data outputting module is in the lock state.Described control module can comprise the control of control submodule realization to a plurality of data outputting module; Also can be with a plurality of control submodules, each control submodule is connected with each described a plurality of data outputting module, controls a data data module.
As shown in Figure 6, a kind of realization circuit diagram of control submodule provided by the invention, it utilizes programmable logic device to realize, comprise 4 inputs and 2 outputs, input is respectively: select signal EN, clock signal clk, main with locking signal LOCK1 and standby locking signal LOCK2, be output as: the main state output signal ACT, stand-by state output signal STD of using.Wherein:
EN selects module to be provided with, select module from a plurality of data outputting module, select a data output module as output, the value of EN is set according to different output results, represent to select module to allow this data outputting module output during EN=1, represent to select module to forbid this data outputting module output during EN=0; CLK is intrasystem global clock (can be any clock, frequency be high more, and it is short more operating process such as to switch, suggestion with the clock signal about 2MHz); LOCK1 is that the master uses the line locking signal, represents the master during LOCK1=0 with occupied, and other data outputting module do not allow to become main having used, and represents during LOCK1=1 that the master is occupied with also not having, and other data outputting module can allow to become master's usefulness; LOCK2 is the siding locking signal, represents standby occupiedly during LOCK2=0, and other data outputting module do not allow to become standby, represents during LOCK2=1 standbyly also not have occupiedly, and other data outputting module can allow to become standby; ACT main use state output signal, and it is main with state and allow output to represent during ACT=1 that this data outputting module is in, and it is non-main with state and forbid exporting to represent during ACT=0 that this data outputting module is in; STD is the stand-by state output signal, represents during STD=1 that this data outputting module is in stand-by state, represents during STD=0 that this data outputting module is in non-stand-by state.
Shown in Figure 7, be the state transition flow chart that utilizes the control submodule of FPGA (Field Programmable Gate Array) realization, the state description among the figure is as follows:
| | std | |
| S0 | ||
| 0 | 0 | |
| |
1 | 0 |
| |
0 | 1 |
As shown in Figure 7, when ACT=0 and STD=0, be the S0 state; When ACT=1 and STD=0, be the S1 state; When ACT=0 and STD=1, be the S2 state.Fig. 7 has described the transition condition of these three states: when the control submodule is in the S0 state, as if EN=0 or as EN=1, LOCK1=0 and LOCK2=0, still be in the S0 state; If when EN=1, LOCK1=1 and LOCK2=1, switch to the S1 state by the S0 state; If when EN=1, LOCK1=0 and LOCK2=1, switch to the S2 state by the S0 state.When the control submodule is in the S1 state, if EN=1 and LOCK1=0 still are in the S1 state; If EN=0 then switches to the S0 state by the S1 state.When the control submodule is in the S2 state, during as if EN=1, LOCK1=0 and LOCK2=0, still be in the S2 state; If EN=0 then switches to the S0 state by the S2 state.
Fig. 8 and shown in Figure 9 be the realization principle of lock-in line, as shown in Figure 8, the master comprises a power supply with lock-in line, the triode of a plurality of parallel connections, the number of described triode is corresponding with the number of data outputting module, the base stage of each triode links to each other with the ACT input, and collector electrode links to each other with power supply, grounded emitter.It is to utilize OC door (Open-Collector Gate, open-collector gate) line and function, as long as it is 1 (being high level) that 1 ACT is arranged, then the output of LOCK1 line will be 0, promptly the master is in the lock state with lock-in line, in case the master is in the lock state with lock-in line, then not allowing other data outputting module is the main state of using.The realization of standby lock-in line links to each other with the STD input with the main base stage of using lock-in line, its difference to be each triode.As long as it is 1 (being high level) that 1 STD is arranged, then the output of LOCK1 line will be 0, and promptly the master is in the lock state with lock-in line, in case standby lock-in line is in the lock state, then not allowing other data outputting module is stand-by state.
As shown in figure 10, this control circuit also can be realized by discrete device except can realizing with programmable logic device.Clk is synchronizing clock signals (can be any clock, frequency be high more, and it is short more operating process such as to switch, and recommends the clock with 2MHz); En allows the enable signal of notebook data output module output for selecting module; Lock1 is that main to use locking signal, lock2 be standby locking signal; Act uses state output signal for being in the master, and std is for being in the stand-by state output signal.It mainly comprises the gate circuit of some state of a controls, according to the state transition situation among Fig. 7, the output of lock1, en, clk and lock1 is judged, according to different act and the std of different situations output among Fig. 7.
In the system of the present invention, operation principle is as follows: in a certain clock cycle, select module to select a data output module as output from a plurality of data outputting module, and to each control module input select signal, for example selected the data outputting module 2 among Fig. 4 to allow its dateout, then for the EN=1 in the control module 2, this moment, control module 2 was exported ACT2 according to the state of current LOCK1, if current LOCK1=0, be the main lock-in line LOCK1=0 that uses among Fig. 8, the master is in the lock state with lock-in line, then ACT2=0, data outputting module 2 is not in the master and uses state, does not then allow data module 2 dateouts; If current LOCK1=1, ACT2=1 then, then data outputting module 2 is in and mainly uses state, promptly allows data outputting module 2 dateouts, and data outputting module 2 is exported to data reception module according to the signal of ACT1 with data.Owing to ACT2=1, then current main state variation with lock-in line is simultaneously: LOCK1=0, and the master is in the lock state with lock-in line, even select module to select other data module dateouts again, control module does not allow other data modules dateout more yet.Can guarantee effectively that like this software is made mistakes or when being disturbed, a data output module dateout only be arranged.Simultaneously, also comprise standby lock-in line in the native system, it is to cooperate the backup of data outputting module to use.In order to improve the reliability of system, for a data output module, can specify the backup of another one data outputting module as described data outputting module, then previous data outputting module is that the master uses data outputting module, and a back data output module is the preliminary data output module.In case main with the output module fault or when extracting, the preliminary data output module switches to immediately mainly use state, becomes the master and uses data outputting module, can also according to circumstances specify the preliminary data output module at this moment.
The present invention also provides a data output-controlling device, comprising:
Control module is connected with a plurality of data outputting module;
Select module, be used for, from described a plurality of data outputting module, select a data output module, and allow this data outputting module dateout to described data reception module at synchronization;
Wherein, after selecting described data outputting module, described control module is controlled described a plurality of data outputting module, only allows described data outputting module dateout.
Described data output controller, also comprise: standby control module, be connected with described a plurality of data outputting module, under the control of this standby control module and described control module, each described a plurality of data outputting module is main with data outputting module or preliminary data output module at synchronization.
Described control module and standby control module are locking device, and this locking device comprises control submodule and the lock-in line that links to each other with this control submodule.
Described control submodule is: programmable logic device or discrete device.
Shown in Figure 11, be concrete use of scheme provided by the invention on ply-yarn drill and receiving card.It comprises: a plurality of ply-yarn drills, and a receiving card, bus, main with lock-in line and standby lock-in line, wherein, described a plurality of ply-yarn drills are connected with receiving card by bus with receiving card.Main connected mode with lock-in line and standby lock-in line and described a plurality of ply-yarn drill and receiving card also is a bus mode, comprises clock signal on the described bus.Outside ply-yarn drill and receiving card master control borad is arranged, the selection module that has software to realize on the master control borad realizes the control to ply-yarn drill, selects a ply-yarn drill as output from a plurality of ply-yarn drills; A control submodule is arranged in each ply-yarn drill, and a plurality of control submodules adopt bus mode and realize respectively and main being connected with lock-in line and standby lock-in line.Cooperate under the main control with lock-in line or standby lock-in line at this control submodule, synchronization realizes that described a plurality of ply-yarn drills are main with state or stand-by state.When described selection module is selected a ply-yarn drill as output, control submodule in the described selecteed ply-yarn drill is controlled with lock-in line with main, determine whether to allow this selecteed ply-yarn drill to be in the main state of using, and it is main when using state when allowing to be in, to lead with the lock-in line locking, and not allow other ply-yarn drills to be in the main state of using.It controls submodule, and the realization of lock-in line is same as described above.
Should comprise a plurality of control submodules with in the example, the number and the ply-yarn drill number of control submodule are one to one.Certainly in actual applications, control submodule and lock-in line can be integrated into a device or utilize other logical devices, be cooperated with lock-in line by a control submodule, realize locking device, it realizes that principle is identical.
As shown in figure 12, the present invention also provides a kind of data output method, comprising:
At synchronization, from a plurality of data outputting module, select a data output module;
After determining described data outputting module, described a plurality of data outputting module are controlled, only allow described data outputting module dateout;
Described data outputting module arrives data reception module by the data transmission channel dateout.
As shown in figure 13, wherein described at synchronization, from a plurality of data outputting module, select a data output module specifically to comprise:
Forbid that described a plurality of data outputting module carries out data output;
Utilize a select command to go to allow the data outputting module of this select command correspondence to carry out data output.
Described data transmission channel is: data/address bus, it is connected with described a plurality of data outputting module and data reception module.
As shown in figure 14, described described a plurality of data outputting module are controlled specifically comprises:
Produce a locking signal;
Described locking signal is sent to described data outputting module;
Utilize described locking signal that described data outputting module is locked.
Described data output method also comprises the active and standby step of switching with data outputting module, and described switch step specifically comprises:
Forbid being in the data outputting module output of main usefulness;
Control module will be in standby data outputting module and switch to the main data outputting module of using.
State transition flow chart referring to Fig. 7, when a preliminary data output module is in the S2 state, if the master of this preliminary data output module is with the data outputting module output that is under an embargo, promptly main EN=0 with data outputting module, then the master switches to the S0 state with data outputting module from the S1 state, and the master is released with lock-in line simultaneously, i.e. LOCK1=1, then the preliminary data output module switches to the S1 state by S2, is in main state with data outputting module.At this moment, select module can specify a preliminary data output module in addition, to improve the reliability of system.
In system applies, when system has just powered on, the output of each data outputting module is output prohibited state, select module at first to carry out the output function of once forbidding all data outputting module, the state that guarantees each line data outputting module all is in output prohibited state, and then to allow a data output module be main to allow another piece plate standby (EN=1) at last with (EN=1), and the time interval of two orders will guarantee greater than a clock cycle.System is in service according to circumstances to be controlled with data outputting module active and standby.If switch the main data outputting module of using, its operating process is: forbid the data outputting module output (EN=0) of main usefulness earlier, at this moment the preliminary data output module becomes main usefulness automatically, and can specify other data outputting module as the preliminary data output module this moment again.
As can be seen from Figure 14 our bright scheme has following beneficial effect: adopt bus connecting mode, realize active output use same passage, reduced the cable tray of backboard, for example, the wiring quantity in the backboard reduces to fixing 3 by n; Utilize the master to realize that with lock-in line all ply-yarn drills have only a ply-yarn drill to export at synchronization, avoid the output conflict; Utilize standby lock-in line to realize the backup of output source, realize fallback circuit, switch rapidly, reduced influence, improved the reliability of system system by hardware.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1, a kind of data output system is characterized in that, comprising:
A plurality of data outputting module, each described a plurality of data outputting module can be carried out the processing of data;
Data reception module is used to receive the data by described a plurality of data outputting module outputs;
Bus, each described a plurality of data outputting module is connected with described data reception module by described bus;
Select module, be used for, adopt and select signal from described a plurality of data outputting module, to select a data output module, allow this data outputting module dateout of choosing to described data reception module at synchronization, and to the control module input select signal;
Control module, be connected with described selection module with described a plurality of data outputting module, be used for after described selection module is selected this data outputting module of choosing, according to the selection signal of described selection module and the state of the described data outputting module of choosing, described a plurality of data outputting module are controlled the data outputting module dateout that only allows this to choose.
2, the system as claimed in claim 1, it is characterized in that: described system also comprises: standby control module, be connected with described a plurality of data outputting module, under the control of this standby control module and described control module, each described a plurality of data outputting module is main with one of data outputting module or preliminary data output module at synchronization.
3, the system as claimed in claim 1 is characterized in that: described control module is a locking device, and this locking device comprises control submodule and the lock-in line that links to each other with this control submodule.
4, system as claimed in claim 2 is characterized in that: described standby control module is a locking device, and this locking device comprises control submodule and the lock-in line that links to each other with this control submodule.
5, as claim 3 or 4 described systems, it is characterized in that: described control submodule is programmable logic device or discrete device.
6, a data output-controlling device is characterized in that, comprising:
Select module, be used for, adopt and select signal from a plurality of data outputting module, to select a data output module, allow this data outputting module dateout of choosing to data reception module at synchronization, and to the control module input select signal;
Control module, be connected with described selection module with a plurality of data outputting module, be used for after described selection module is selected this data outputting module of choosing, according to the selection signal of described selection module and the state of the described data outputting module of choosing, described a plurality of data outputting module are controlled the data outputting module dateout that only allows this to choose.
7, device as claimed in claim 6, it is characterized in that, also comprise: standby control module, be connected with described a plurality of data outputting module, under the control of this standby control module and described control module, each described a plurality of data outputting module is main with one of data outputting module or preliminary data output module at synchronization.
8, device as claimed in claim 6 is characterized in that: described control module is a locking device, and this locking device comprises control submodule and the lock-in line that links to each other with this control submodule.
9, device as claimed in claim 7 is characterized in that: described standby control module is a locking device, and this locking device comprises control submodule and the lock-in line that links to each other with this control submodule.
10, install as claimed in claim 8 or 9, it is characterized in that: described control submodule is: programmable logic device or discrete device.
11, a kind of data transmission method is characterized in that, comprises step:
At synchronization, select module to adopt and select signal from a plurality of data outputting module, to select a data output module, and to the control module input select signal;
After determining the described data outputting module of choosing, according to the selection signal of described selection module and the state of the described data outputting module of choosing, described a plurality of data outputting module are controlled, only allow the described data outputting module dateout of choosing;
The described data outputting module of choosing arrives data reception module by the data transmission channel dateout.
12, method as claimed in claim 11 is characterized in that, and is described at synchronization, selects module to adopt and selects signal to select a data output module specifically to comprise from a plurality of data outputting module:
Forbid that described a plurality of data outputting module carries out data output;
Utilize one to select signal to go to allow the data outputting module of this selection signal correspondence to carry out data output.
13, method as claimed in claim 11 is characterized in that, described data transmission channel is: data/address bus is connected with described a plurality of data outputting module and data reception module.
14, method as claimed in claim 11, it is characterized in that, described according to the selection signal of described selection module and the state of the described data outputting module of choosing, described a plurality of data outputting module are controlled specifically comprise:, produce a locking signal according to the selection signal of selecting module and the state of the described data outputting module of choosing;
Described locking signal is sent to unchecked data outputting module;
Utilize described locking signal with described unchecked data outputting module locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100616856A CN100471155C (en) | 2006-07-17 | 2006-07-17 | Data output system, method and data output controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100616856A CN100471155C (en) | 2006-07-17 | 2006-07-17 | Data output system, method and data output controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1901491A CN1901491A (en) | 2007-01-24 |
| CN100471155C true CN100471155C (en) | 2009-03-18 |
Family
ID=37657238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100616856A Expired - Fee Related CN100471155C (en) | 2006-07-17 | 2006-07-17 | Data output system, method and data output controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100471155C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075395B (en) * | 2009-11-20 | 2013-05-22 | 上海微电子装备有限公司 | Data transmission bus system |
-
2006
- 2006-07-17 CN CNB2006100616856A patent/CN100471155C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 数字电子技术基础（第四版）. 阎石，145-147，高等教育出版社. 1999 |
| 数字电子技术基础(第四版). 阎石，145-147，高等教育出版社. 1999 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1901491A (en) | 2007-01-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5594896A (en) | Method for switching between a plurality of clock sources upon detection of phase alignment thereof and disabling all other clock sources | |
| US7124250B2 (en) | Memory module device for use in high-frequency operation | |
| US7627003B1 (en) | Automatic clock synchronization and distribution circuit for counter clock flow pipelined systems | |
| KR20100102924A (en) | Semiconductor memory device having multi-chip package for implementing other termination and termination control method thereof | |
| CN104424154A (en) | Universal Spi (serial Peripheral Interface) | |
| US7036095B2 (en) | Clock generation system for a prototyping apparatus | |
| CN101198942A (en) | Systems with variable link widths | |
| KR100432923B1 (en) | Register capable of corresponding to wide frequency band and signal generating method using the same | |
| WO2005026755A1 (en) | Test apparatus | |
| CN100471155C (en) | Data output system, method and data output controller | |
| JPH05288807A (en) | Integrated circuit containing check circuit | |
| US5577096A (en) | Transmission system having stand-by line switching facility | |
| CN107241141B (en) | Drive chip, optical module switching method and PON (passive optical network) equipment | |
| US5974489A (en) | Computer bus expansion | |
| WO2005026756A1 (en) | Test apparatus and test method | |
| US7882385B2 (en) | Reducing inefficiencies of multi-clock-domain interfaces using a modified latch bank | |
| CN114020669B (en) | CPLD-based I2C link system and server | |
| US6269414B1 (en) | Data rate doubler for electrical backplane | |
| US7058778B2 (en) | Memory controllers having pins with selectable functionality | |
| KR20080100549A (en) | Semiconductor memory device | |
| CN108009113B (en) | Method for realizing debugging serial port in double-master control system | |
| WO2005026758A1 (en) | Test apparatus | |
| JP3857757B2 (en) | Integrated circuit test equipment | |
| US20040107375A1 (en) | System and method for switching clock sources | |
| US20050120155A1 (en) | Multi-bus I2C system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20170717 |