CN1920804A - Method for initially setting apparatus and initially set system - Google Patents
Method for initially setting apparatus and initially set system Download PDFInfo
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- CN1920804A CN1920804A CN 200610127223 CN200610127223A CN1920804A CN 1920804 A CN1920804 A CN 1920804A CN 200610127223 CN200610127223 CN 200610127223 CN 200610127223 A CN200610127223 A CN 200610127223A CN 1920804 A CN1920804 A CN 1920804A
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Abstract
The invention relates to a method for initializing device and relative initialization setting system, wherein it uses the first device to set the initial state of second device; the first and second devices are coupled via one initial bus; at the initial period, the first device via the initial bus sends out at least one transmission instruction, to make the second device via the initial bus receive one initial setting data at the time that one transmission instruction is sent out. The invention can use little pins to transmit much initial setting data.
Description
Technical field
The invention relates to a kind of method of initially setting apparatus, particularly see through a bus transmits the initially setting apparatus of at least one primary data in a baseline method about a kind of.
Background technology
In an electronic system (for example: a computer system), in order (for example: an original state wafer) or the function that this device support is additionally added, pin position design drop lock (strapping) function of meeting use device to set a device.The drop lock function can be used for setting original state, and for example (phase lock loop, frequency PLL), specific function are (for example: the unlatching test pattern of device) or close, perhaps other function settings for phaselocked loop.
Because the original state value of need setting may be a lot of, if set original state and increase the pin position of drop lock function special use, will significantly increase plant bulk, also increase unnecessary production cost.For avoiding this situation; usually some general utility functions signal pin is drawn high (pull up) or is dragged down (pull down) so that original levels to be provided through resistance in the meeting use device; order is installed on system power supply complete (power OK) signal transition and pins these original levels values for effectively changing along (transition edge) then, can reach the purpose of setting original state.Isolate because the weld pad (pad) of the general utility functions signal of device is ternary (tristate), therefore the value that (the complete signal of power supply is effective) pins resistance before system power supply is complete can correctly be pinned the original levels value.It is not on the very high general utility functions signal that the signal quality when but these are drawn high and drag down resistance and can influence these general utility functions signal normal runnings, this kind framework only can be applied in signal frequency.
Fig. 1 is the calcspar that a tradition is used the electronic system 10 of drop lock function.This electronic system 10 comprises one first device, 11 and 1 second device 12.The drop lock function is applied to be coupled on the general utility functions signal S1～Sn of 12 in first device, 11 and second device, utilizes bridle wire apparatus (jumper) J1～Jn to select respectively signal S1～Sn is drawn high or drags down.Second device 12 also comprises the complete signal Power_OK of a power supply.Fig. 2 is the signal waveforms that second device 12 is carried out the drop lock function among Fig. 1.By among the figure as can be known, complete signal Power_OK becomes effective rising edge at power supply, signal S1～Sn draw high or the value of dragging down is lockable.Set the initial set value of n position but utilize n signal only can provide, and the signal quality when drawing high or dragging down resistance value and will reply to the general utility functions signal to signal S1～Sn exerts an influence.
Summary of the invention
The invention provides a kind of method of initially setting apparatus, it utilizes one first device to set the original state of one second device.This first device is to see through an initial bus to be coupled to each other with this second device.In a baseline, this first device sees through this initial bus and sends at least one move instruction, second is installed on and sees through this initial bus when each move instruction is sent and receive initial setting data so as to making this.This first device more comprises a multiplexer and whether connects a bridle wire apparatus to switch initial bus.
The present invention further provides a kind of electronic system, comprise one first device and one second device, and an initial bus is coupled between this first device and this second device.In a baseline, this first device sees through this initial bus and sends at least one move instruction, second is installed on and sees through this initial bus when each move instruction is sent and receive initial setting data so as to making this.
Description of drawings
Fig. 1 is the calcspar of a known technology.
Fig. 2 is the signal waveforms of Fig. 1.
Fig. 3 is the calcspar of one embodiment of the invention.
Fig. 4 is the process flow diagram of one embodiment of the invention.
Fig. 5 is the signal waveforms of the embodiment of Fig. 3.
Embodiment
In view of this, the present invention proposes one and utilizes the method for pin position drop lock with initially setting apparatus, to overcome available general utility functions signal wire limited amount, be not enough to set the disappearance of all original states, also can overcome extra resistance the normal signal of installing is impacted.Method of the present invention utilizes existing bus gradation to carry out drop lock, to reach the purpose of breech lock any amount original state value, and utilizing multiplexer switching bus when carrying out drop lock, whether to be connected a bridle wire apparatus with operate as normal, the resistance that drop lock is used does not influence the operate as normal of device.
Fig. 3 is the calcspar of an electronic system 20 of one embodiment of the invention.This electronic system 20 comprises one first device, 21 and 1 second device 22.One initial bus S1～Sn is coupled between first device, 21 and second device 22, initial bus S3～Sn and the corresponding bridle wire apparatus J3～Jn that connects.Second device 22 comprises a complete signal Power_OK of a power supply and a reset signal Reset in addition.When the complete signal Power_OK of power supply was high level, second device 22 can be prepared to carry out the oneself and start; When reset signal Reset was high level, expression second device 22 oneself's startup finished, and can begin operate as normal.First device 21 is the original states that are used for setting second device 22, and control complete signal Power_OK of power supply and reset signal Reset.First device 21 comprises a multi-task mechanism (not shown), in order to switch whether tie jumper device J3～Jn of initial bus S3～Sn, when 21 pairs second devices 22 of first device carried out the original state setting, initial bus S3～Sn was connected to bridle wire apparatus J3～Jn with the required initial set value of breech lock; After second device 22 began to start, initial bus S3～Sn is tie jumper device J3～Jn not then, makes signal not be subjected to the interference of bridle wire apparatus J3～Jn.
First device 21 utilizes initial bus S1 to transmit a breech lock (latch) signal, and triggering a move instruction to initial bus S3～Sn in each rising edge of latch-up signal, initial bus S3～Sn promptly transmits initial setting data to the second device 22 of one (n-2) position according to move instruction.The clock pulse frequency size of latch-up signal only need meet the frequency that initial bus S1～Sn can carry, and does not need specific a certain frequency.First device 21 promptly according to this latch-up signal, triggers a move instruction in the rising edge of each clock pulse before the complete signal Power_OK of power supply activation, make initial bus S3～Sn transmit initial setting data to the second device 22 of (n-2) position.Because each move instruction can make initial bus S3～Sn transmit initial setting data to the second device 22 of (n-2) position, so the clock pulse that can trigger is many more, the number of times of move instruction increases thereupon, and the initial setting data that transmitted are just many more.
Moreover as above-mentioned, second device 22 begins to carry out the oneself and starts after the complete signal Power_OK of power supply activation, therefore initial set value should be carried out promptly to set before the oneself starts and finish in second device 22, second device 22 can normally be started according to correct initial setting, and in second device 22 start finish after with reset signal Reset activation.Therefore the complete signal Power_OK of power supply must be prior to reset signal Reset activation, and before the complete signal Power_OK of power supply activation during be the baseline that can set second device 22.
Initial bus S2 then is used for transmitting an initial signal, and this second device 22 can see through initial bus S3～Sn and receive the initial setting data when this start signal activation.First device 21 can be controlled the length of baseline, that is the opportunity of the complete signal Power_OK of power supply activation, and frequency and this start signal of controlling this latch-up signal, transmits many initial setting data.
Initial bus S1～Sn can be designed to for the function institute of initially setting apparatus special-purpose, the pin position that also can share the general utility functions signal.Since carry out this two function one of them the time, first device 21 can see through multi-task mechanism decision initial bus S1～Sn and whether be connected to bridle wire apparatus J3～Jn, when therefore initial bus S1～Sn carries out general utility functions, bridle wire apparatus J3～Jn isolates with initial bus S1～Sn, and signal quality can be not influenced.After finishing during the initial setting, the function of this initial bus and sequential can be switched back the general utility functions signal.
Fig. 4 is the process flow diagram of embodiments of the invention, please in the lump with reference to figure 3.As second device, 22 the complete signal Power_OK of power supply as yet not before the activation, at first switch initial bus S1～Sn and be connected to bridle wire apparatus J3～Jn in step S01, make first device 21 can utilize bridle wire apparatus J3～Jn to carry out drop lock.Then in step S02 first device 21 activation start signals, make second device 22 can receive the initial setting data that initial bus S3～Sn is transmitted, and,, initial bus S3～Sn transmits the clock pulse of initial setting data so that being provided according to clock pulse frequency transmission latch-up signal.For making second device 22 can successfully receive the initial setting data, latch-up signal is to send together in the time of the start signal activation.
Can trigger a move instruction in each rising edge of latch-up signal in step S03 first device 21, initial bus S3～Sn promptly transmits initial setting data to the second device 22 according to move instruction.These initial setting data are that the pin place value by breech lock bridle wire apparatus J3～Jn gets, so each move instruction can produce the data of (n-2) position.Then receive the initial setting data of initial bus S3～Sn transmission, and be stored in a working storage (not illustrating), second device 22 can be operated and be able to normal the startup according to its relevant parameter of these initial setting data settings in step S04 second device 22.
In step S05, judge whether second device 22 has received all initial setting data.
If second device 22 has received all initial setting data, then in step S06, the multi-task mechanism of first device 21 is isolated initial bus S1～Sn and bridle wire apparatus J3～Jn, replys to be the operate as normal path.First device 21 is also closed start signal simultaneously, makes 22 actions that stop to receive of second device, and stops to send latch-up signal, no longer triggers move instruction.
If second device 22 does not receive required initial setting data as yet fully, then get back to step S03, send a move instruction once more to transmit other initial setting data, till second device 22 successfully receives all initial setting data.
Fig. 5 is the signal waveforms that 21 pairs second devices of first device 22 are carried out an embodiment of initial setting among Fig. 3.In this embodiment, first device 21 in begin to supply with these second device, 22 power supplys to power supply one section baseline before the complete signal Power_OK activation, utilize initial bus S1～Sn that second device 22 is carried out initial settings.
In baseline, first installs 21 activation start signals, and repeatedly triggers move instruction according to the clock pulse frequency of latch-up signal, and multi-task mechanism then connects initial bus S3～Sn to bridle wire apparatus J3～Jn.At each rising edge of latch-up signal, initial bus S3～Sn promptly captures the value of bridle wire apparatus J3～Jn according to move instruction, and is sent to second device 22 as the initial setting data.The value of bridle wire apparatus J3～Jn is to set according to needing the initial setting data that transmit.After the complete signal Power_OK of the power supply activation, second device 22 successfully receives all initial setting data, so can begin to start.
If during all of start signal activation, latch-up signal triggers m time move instruction altogether, then the initial setting data of breech locked reach the quantity of m * (n-2).The triggering times m of latch-up signal can cooperate the initial setting data bulk of required setting to be adjusted, but notes, initial setting must be finished before the complete signal Power_OK of power supply activation, otherwise second device 22 can't operate as normal.Therefore when practical operation, need consider the available drop lock pin number amount and the length of baseline, select suitable frequency to trigger enough move instructions.After the complete signal Power_OK of the power supply activation, multi-task mechanism switches initial bus S1～Sn to the operate as normal path, isolates bridle wire apparatus J3～Jn, makes bridle wire apparatus not influence normal working signal.
For example, if second device 22 needs 12 initial setting data, and initial bus S1～Sn has 6 pin positions, one of them is in order to transmit the clock pulse frequency of latch-up signal, one the pin position that can be used for drop lock is 4 in order to transmit start signal, and therefore corresponding bridle wire apparatus also need have 4.When a move instruction of first device, 21 triggerings, initial bus S1～Sn can transmit 4 initial setting data to the second devices 22, and 12 initial setting data are sent in tendency to develop, then needs to trigger 3 move instructions altogether.Hence one can see that, and the clock pulse frequency of latch-up signal must transmit order for triggering at least 3 times in the minimum activation of baseline 3 times, and second device can successfully receive all initial setting data.
Hence one can see that, method of the present invention only needs n drop lock pin position and n-2 bridle wire apparatus, see through to trigger m time move instruction, i.e. the individual initial setting data of breech locked m * (n-2), do not need additionally to increase drop lock pin position and corresponding bridle wire apparatus, saving unnecessary plant bulk increases.Utilize the initial bus of the embodiment of the invention, can utilize the pin position of only a few to transmit the device that a large amount of initial setting data are given needs initial setting.The present invention also can utilize the initial bus of present embodiment to transmit a large amount of test mode setting values to device in plant-manufactured testing process except the initial setting that can be applied to generator.Convenience in the time of so can significantly improving device to test through easy setting.
The above only is preferred embodiment of the present invention; so it is not in order to limit scope of the present invention; any personnel that are familiar with this technology; without departing from the spirit and scope of the present invention; can do further improvement and variation on this basis, so the scope that claims were defined that protection scope of the present invention is worked as with the application is as the criterion.
Being simply described as follows of symbol in the accompanying drawing:
11,21: first device
12,22: the second devices
Claims (16)
1. the method for an initially setting apparatus, the original state in order to setting device is characterized in that, the method for this initially setting apparatus comprises:
In a baseline, see through an initial bus and send at least one move instruction from one first device; And
Transmit initial setting data to one second device according to this move instruction from this initial bus.
2. the method for initially setting apparatus according to claim 1 is characterized in that, comprises transmitting a latch-up signal, and triggers this move instruction according to the rising edge of this latch-up signal.
3. the method for initially setting apparatus according to claim 1 is characterized in that, comprise transmitting an initial signal, and during this start signal activation, this second device sees through this initial bus and receives this initial setting data.
4. the method for initially setting apparatus according to claim 1, it is characterized in that before the complete signal activation of this baseline one power supply during.
5. the method for initially setting apparatus according to claim 1 is characterized in that, the level that more comprises according to a bridle wire apparatus provides this initial setting data.
6. the method for initially setting apparatus according to claim 5 is characterized in that, further be included in the initial setting ED is provided after, change the sequential of this initial bus and the connection status of function and this bridle wire apparatus.
7. the method for an initially setting apparatus is applicable to see through one first device and one second device that an initial bus connects, and it is characterized in that the method for this initially setting apparatus comprises:
See through this initial bus according to a latch-up signal and transmit at least one initial setting data.
8. the method for initially setting apparatus according to claim 7 is characterized in that, this first device triggers this initial bus according at least one rising edge of this latch-up signal and transmits this initial setting data.
9. the method for initially setting apparatus according to claim 7 is characterized in that, comprise transmitting an initial signal, and this second sees through this initial bus when being installed on this start signal activation and receive this initial setting data.
10. the method for initially setting apparatus according to claim 7 is characterized in that, the level that more comprises according to a bridle wire apparatus provides this initial setting data.
11. the method for initially setting apparatus according to claim 10 is characterized in that, further be included in this primary data transmit finish after, change the sequential of this initial bus and the connection status of function and this bridle wire apparatus.
12. an initially set system is characterized in that, this initially set system comprises:
One first device;
One second device; And
One initial bus is coupled between this first device and this second device; Wherein in a baseline, this first device sees through this initial bus and sends at least one move instruction, makes this second device see through this initial bus and receives at least one initial setting data.
13. initially set system according to claim 12 is characterized in that, this first device sends a latch-up signal, and this first at least one rising edge that installs according to this latch-up signal triggers this move instruction.
14. initially set system according to claim 12 is characterized in that, this first device sends an initial signal, and this second device receives this initial setting data according to this start signal through this initial bus.
15. initially set system according to claim 12 is characterized in that, more comprises a bridle wire apparatus, and provides this initial setting data according to the level of this bridle wire apparatus.
16. initially set system according to claim 12 is characterized in that, during the complete signal activation of this baseline one power supply is preceding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610127223XA CN100547575C (en) | 2006-09-12 | 2006-09-12 | The method of initially setting apparatus and initially set system |
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| CNB200610127223XA CN100547575C (en) | 2006-09-12 | 2006-09-12 | The method of initially setting apparatus and initially set system |
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| CN1920804A true CN1920804A (en) | 2007-02-28 |
| CN100547575C CN100547575C (en) | 2009-10-07 |
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| JP2622620B2 (en) * | 1989-11-07 | 1997-06-18 | プロクシマ コーポレイション | Computer input system for altering a computer generated display visible image |
| US6434654B1 (en) * | 1999-03-26 | 2002-08-13 | Koninklijke Philips Electronics N.V. | System bus with a variable width selectivity configurable at initialization |
| US6279073B1 (en) * | 1999-09-30 | 2001-08-21 | Silicon Graphics, Inc. | Configurable synchronizer for double data rate synchronous dynamic random access memory |
| JP4078119B2 (en) * | 2002-04-15 | 2008-04-23 | 富士通株式会社 | Semiconductor memory |
| US7210030B2 (en) * | 2004-07-22 | 2007-04-24 | International Business Machines Corporation | Programmable memory initialization system and method |
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