CN106598890A - BOM switching method and board - Google Patents
BOM switching method and board Download PDFInfo
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- CN106598890A CN106598890A CN201611149485.6A CN201611149485A CN106598890A CN 106598890 A CN106598890 A CN 106598890A CN 201611149485 A CN201611149485 A CN 201611149485A CN 106598890 A CN106598890 A CN 106598890A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
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- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
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Abstract
The invention provides a BOM switching method and a board. The method comprises the steps as follows: a basic board comprising an input link and at least L levels of switching links is obtained; each level of switching link comprises at least two output sub-links; a signal transmission link, which needs to be achieved, of the basic board is determined; the signal transmission link comprises an input link and one output sub-link included in at least two adjacent levels of switching links, wherein the signal transmission link is a passage; and capacitors are connected to M output sub-links on the signal transmission link in series respectively and resistors are connected to N output sub-links on the signal transmission link in series respectively, so that the total capacitance value of the capacitors which are connected to the signal transmission link in series is in a set threshold range, wherein M, N and L all are integers not smaller than 1 and M+N is not greater than L. According to the BOM switching method and the board, the energy of transmitted signals on the signal transmission link can be ensured.
Description
Technical field
The present invention relates to electronic circuit technology field, more particularly to a kind of BOM (Bill of Material, material) switching
Method and board.
Background technology
Along with the arrival of cloud computing, the development of server is also emerging rapidly, in the design of server, signal rate
More and more higher, high speed signal is also constantly being lifted to the demand of signal integrity.In order to meet the demand of different clients, at a high speed
In the design of board, generally require for one group of high-speed bus to switch to multigroup high-speed bus, so that each group of high speed for switching to
The different demands of bus correspondence client, in the BOM for selecting welding different, connect different terminals.
At present, when designing handoff links in high speed board, generally use multiple electric capacity to realize.By by multiple electric capacity
A pad (pad) overlap, the pad of the coincidence as high-speed bus input, each electric capacity in the plurality of electric capacity
Another pad as high-speed bus after switching each outfan, so as to realize for an input switching to multiple outputs
End.
However, in high speed board, if there is multiple material switching, can cause to concatenate multiple electric capacity in handoff links,
Because the logical exchange of electric capacity hinders the characteristic of direct current, the energy of signal on transmission link can be reduced.
The content of the invention
A kind of BOM changing methods and board are embodiments provided, with signal energy on effectively solving transmission link
The problem of reduction.
In a first aspect, a kind of BOM changing methods are embodiments provided, including：
Acquisition includes the basic board of input link and at least L rank handoff links；The switching chain of each rank
Road includes at least two output sublinks；
Determine the signal transmission link realized needed for the basic board；The signal transmission link includes：Input link
One included with the handoff links at least two adjacent ranks exports sublink；Wherein, the signal transmission link is logical
Road；
Electric capacity on connecting respectively in the M output sublink on the signal transmission link, and pass in the signal
Connect respectively in N number of output sublink on transmission link upper resistance so that on the signal transmission link series capacitance total electricity
In threshold range of the capacitance in setting；
Wherein, M, N, L are the integer not less than 1, and M+N is not more than L.
Preferably, on connecting respectively in the N number of output sublink on the signal transmission link before resistance, further
Including：Determine on the signal transmission link the corresponding ceiling capacity threshold value in transmission signal；Determine that the signal is passed
The corresponding current value of required transmission signal on transmission link；And determined according to the first formula N number of on the signal transmission link
The maximum value of the total resistance of all resistance correspondence connected in output sublink；
First formula includes：
Wherein, RmaxFor characterizing the maximum value, PmaxFor characterizing the ceiling capacity threshold value, I is used for table
Levy the corresponding current value of required transmission signal on the signal transmission link.
Preferably, resistance on connecting respectively in the N number of output sublink on the signal transmission link, including：
Resistance is the resistance of 0ohm on connecting respectively in N number of output sublink on the signal transmission link.
Preferably, electric capacity on connecting respectively in the M output sublink on the signal transmission link, including：
Capacitance identical electric capacity on connecting respectively in the M output sublink on the signal transmission link.
Second aspect, embodiments provides a kind of board, is made using the BOM changing methods described in aforesaid way
Form；Wherein, the board produced includes basic board and signal transmission link, and the signal transmission link includes：It is defeated
The output sublink that handoff links on incoming link and at least two adjacent ranks include；Wherein, the signal transmission chain
Road is path；
Electric capacity, and the signal transmission chain are in series with respectively in M output sublink on the signal transmission link
It is in series with respectively on resistance, and the signal transmission link at the total capacitance value of series capacitance in N number of output sublink on road
In the threshold range of setting；
M, N, L are the integer not less than 1, and M+N is not more than L.
Preferably, the total resistance of all resistance correspondence connected in the N number of output sublink on the signal transmission link
There is following relation in maximum value：
Wherein, RmaxFor characterizing the maximum value, PmaxFor characterizing on the signal transmission link in transmission signal
When corresponding ceiling capacity threshold value, I is used to characterize the corresponding current value of required transmission signal on the signal transmission link.
Preferably, the resistance of the resistance connected respectively in the N number of output sublink on the signal transmission link is
0ohm。
Preferably, the capacitance of the electric capacity connected respectively in the M output sublink on the signal transmission link is identical.
A kind of BOM changing methods and board are embodiments provided, the design reality on the basic board for obtaining
During existing signal transmission link, by ensureing threshold value model of the total capacitance value of institute's series capacitance on signal transmission link in setting
In enclosing, realize that BOM switches by series resistance in other output sublinks on signal transmission link, due to signal transmission chain
Threshold range of the total capacitance value in setting on road, and the threshold range is the scope that ensure that signal transmission energy, therefore,
This programme can ensure that the energy of institute's transmission signal on the signal transmission link.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is a kind of BOM changing methods flow chart that one embodiment of the invention is provided；
Fig. 2 is another kind of BOM changing methods flow chart that one embodiment of the invention is provided；
Fig. 3 is the schematic diagram of a kind of basic board that one embodiment of the invention is provided.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention, rather than the embodiment of whole, based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
Embodiment one
As shown in figure 1, embodiments providing a kind of BOM changing methods, the method may comprise steps of：
Step 101：Acquisition includes the basic board of input link and at least L rank handoff links；Each rank
Handoff links include at least two output sublinks；
Step 102：Determine the signal transmission link realized needed for the basic board；The signal transmission link includes：
The output sublink that handoff links on input link and at least two adjacent ranks include；Wherein, the signal transmission
Link is path；
Step 103：Electric capacity on connecting respectively in the M output sublink on the signal transmission link, and in institute
State and connect respectively in the N number of output sublink on signal transmission link upper resistance, so that series electrical on the signal transmission link
In threshold range of the total capacitance value of appearance in setting；
Wherein, M, N, L are the integer not less than 1, and M+N is not more than L.
According to the embodiments of the present invention, during the signal transmission link that design is realized on the basic board for obtaining,
By ensureing in threshold range of the total capacitance value of institute's series capacitance on signal transmission link in setting, on signal transmission link
Other output sublinks on realize that BOM switches by series resistance, due on signal transmission link total capacitance value in setting
Fixed threshold range, and the threshold range is the scope that ensure that signal transmission energy, therefore, this programme can ensure that the letter
The energy of institute's transmission signal on number transmission link.
Due to demand difference of the different clients to high speed board, therefore, in order to meet the different demands of client, Ke Yisheng
Output basis board, the basic board can switch including multiple BOM, be segmented into multigroup high speed after BOM switchings each time total
Line, the different material of each group of high-speed bus correspondence, to connect different terminals, meets respective client demand, simply soleplate
Do not have aisled signal transmission link on card, after customer demand is determined, can be determined on basic board according to customer demand
The signal transmission link of required realization, by the signal transmission link conducting, to generate required board.
In an embodiment of the invention, resistance on connecting respectively in the N number of output sublink on signal transmission link,
If resistance has resistance, the consumption of energy can be carried out to transmission signal, and in order to ensure transmission signal on signal transmission link
The maximum of the energy that can be consumed is less than ceiling capacity threshold value, then may further include：Determine the signal
On transmission link in transmission signal corresponding ceiling capacity threshold value；Determine required transmission letter on the signal transmission link
Number corresponding current value；And according to series connection in N number of output sublink of the first formula determination on the signal transmission link
The maximum value of the corresponding total resistance of all resistance；
First formula includes：
Wherein, RmaxFor characterizing the maximum value, PmaxFor characterizing the ceiling capacity threshold value, I is used for table
Levy the corresponding current value of required transmission signal on the signal transmission link.
According to above-described embodiment, by will connect on signal transmission link, total resistance is not more than RmaxN number of resistance, can be with
Ensure that the energy that transmission signal is consumed on signal transmission link is less than ceiling capacity threshold value, so as to realize signal just
Often transmission.
In an embodiment of the invention, because the resistance connected on signal transmission link is less, signal transmission institute
The energy of consumption is less, and the purpose of series resistance is to turn on signal transmission link, therefore, it can described in the letter
Connect respectively in N number of output sublink on number transmission link upper resistance, including：It is N number of defeated on the signal transmission link
Go out in sublink to connect respectively resistance of the upper resistance for 0ohm.Thereby may be ensured that the energy of the consumption transmission signal of minimum.
In an embodiment of the invention, efficiently capacitances in series is exported into sublink at M in order to simpler
On, and need to ensure in threshold range of the total capacitance value of series capacitance in setting, then it is described in the signal transmission chain
M on road exports and connect respectively in sublink upper electric capacity, including：The M output sublink on the signal transmission link
Upper upper capacitance identical electric capacity of connecting respectively.According to threshold range and the capacitance of each series capacitance, it may be determined that going out can
The number of the electric capacity to connect, such that it is able to quick design high speed board is completed, and improves efficiency.
Embodiment two
Below so that basic board includes an input link and two rank handoff links as an example, to of the invention real
The BOM changing methods for applying example are described in detail.
As shown in Fig. 2 embodiments providing a kind of BOM changing methods, the method may comprise steps of：
Step 201：Obtain basic board.
Wherein, the basic board includes the handoff links of an input link and two ranks, refer to Fig. 3, and Fig. 3 is base
One embodiment of plinth board, wherein, first level is that input link is switched to into two output sublinks, this two outputs
Sublink is respectively link 1 and link 2.The handoff links of second level are that link 1, link 2 are switched over respectively, and Fig. 3 can
Know, link 3 and link 4 are switched to link 1, link 5 and link 6 are switched to link 2.
On the basic board, link 3, link 4, link 5 and link 6 can respectively connect different terminals, be come with this
Meet the demand of different clients.
Wherein, each link is all now off state on the basic board.
Step 202：Determine demand of the existing customer to high speed board.
For example, client to the demand of high speed board is needed after input link input signal, the signal transmission to terminal a,
Wherein, terminal a is connected with link 3.
Step 203：According to demand of the client to high speed board, it is determined that the signal link realized needed for basic board, the letter
Number transmission link is input link-link 1- links 3.
Because the demand of client is connection terminal a, then need for input link-link 1- links 3 to be embodied as path, with
Ensure that signal can be transferred to terminal a from input link.And when it is path to ensure input link-link 1- links 3, other chains
Road can be designed as path, it is also possible to be designed as open circuit.
Step 204：It is determined that can in the threshold range at the total capacitance value of series capacitance on signal transmission link, with
And the capacitance of each electric capacity of series connection.
Wherein, can be with normal transmission signal, for example, the threshold range after the threshold range is for ensureing the upper electric capacity of series connection
For 100-220uF.
The capacitance of the electric capacity connected respectively in M output sublink of signal transmission link can be with identical, it is also possible to no
Together, and in series capacitance, need to need string on series connection upper electric capacity, i.e. link 1 when input link is switched to into output sublink
Connection electric capacity.
In order to illustrate to the embodiment of the present invention, the embodiment of the present invention is with an electric capacity of connecting on signal transmission link
Example is illustrated.I.e. the capacitance of series capacitance is between 100-220uF.
Step 205：To determine the capacitances in series of capacitance on link 1.
When will determine the capacitances in series of capacitance on link 1, a pad of the electric capacity is connected with input link,
One end that another pad is switched to link 3 and link 4 with link 1 is connected.
Further, if desired link 2 is also switched on simultaneously, then need to be connected respectively on link 1 and on link 2 one
Individual electric capacity, wherein, the pad coincidence of electric capacity 1 and the electric capacity 2 connect on link 2 connected on link 1, the coincidence pad and
Input link is connected, and another pad of electric capacity 1 is connected with the other end of link 1, another pad and the link 2 of electric capacity 2
The other end is connected, and the conducting of link 1 and link 2 is realized with this.
Step 206：Determine on signal transmission link the corresponding ceiling capacity threshold value in transmission signal.
When signal is transmitted on signal transmission link, can be due to some reasons, such as, signal line length, on holding wire
Resistance etc., causes the consumption of signal energy, and in order to ensure signal can normal transmission, generally require guarantee signal and be transmitted across
The energy consumed in journey must not exceed ceiling capacity threshold value.
Step 207：Determine the corresponding current value of required transmission signal on signal transmission link.
Step 208：It is determined that the total resistance of all resistance correspondence connected in the N number of output sublink on signal transmission link
Maximum value.
In an embodiment of the invention, equation below (1) can be passed through to determine the total resistance of all resistance correspondence of series connection
The maximum value of value：
Wherein, RmaxFor characterizing the maximum value, PmaxFor characterizing the ceiling capacity threshold value, I is used for table
Levy the corresponding current value of required transmission signal on the signal transmission link.
Only need to ensure that total resistance of all resistance connected is less than the maximum value, you can to ensure signal transmission institute
Consumed energy is in ceiling capacity threshold value.
And the effect of series resistance is to turn on link, to realize signal transmission, and the resistance of the resistance connected is less,
The energy that signal transmission is consumed will be less, it is therefore preferred that the resistance that can determine series resistance is 0ohm.
Step 209：By the resistant series of 0ohm on link 3.
The implementation above conducting of signal transmission link, such that it is able to the signal transmission that is input into input link to link 3
Terminal a of connection, meets the demand of client.In order to determine the upper 0ohm resistance of series connection relative to equal series electrical on all links
Appearance can reduce the energy of signal transmission consumption, and the energy expenditure of signal transmission link is carried out below with following three kinds of modes
Emulation：
case1：The link design of an electric capacity is only concatenated on signal transmission link.
case2：Each on signal transmission link exports an electric capacity of connecting in sublink.
case3：One electric capacity of series connection on link 1 on signal transmission link, connect 0ohm in other output sublinks
Resistance link design.
In the case of above-mentioned three kinds, and signal transmission link length is identical, is emulated using Intel SISTAI simulation softwares
The eye pattern of three kinds of signal transmission links, compares eye size as shown in table 1 below：
Table 1：
| Height(mV) | Width(Ps) | |
| Case1_1cap | 47.8 | 21.8 |
| Case2_2cap | 42 | 19.9 |
| Case3_1cap_1resistance | 47.8 | 21.8 |
It can be seen from table 1, the eye pattern of the eye pattern of case1 and case3 than case2 is big, and the eye pattern of case1 and case3 is complete
It is complete to coincide, it is therefore shown that the energy phase that the resistance that 0ohm is concatenated in case3 is consumed with signal transmission when only concatenating an electric capacity
Together.
Embodiment three
One embodiment of the invention additionally provides a kind of board, using the BOM changing method systems described in above-described embodiment one
Form；Wherein, the board produced includes basic board and signal transmission link, and the signal transmission link includes：
The output sublink that handoff links on input link and at least two adjacent ranks include；Wherein, the signal transmission
Link is path；
Electric capacity, and the signal transmission chain are in series with respectively in M output sublink on the signal transmission link
It is in series with respectively on resistance, and the signal transmission link at the total capacitance value of series capacitance in N number of output sublink on road
In the threshold range of setting；
M, N, L are the integer not less than 1, and M+N is not more than L.
In an embodiment of the invention, all electricity connected in the N number of output sublink on the signal transmission link
There is following relation in the maximum value of the total resistance of resistance correspondence：
Wherein, RmaxFor characterizing the maximum value, PmaxFor characterizing on the signal transmission link in transmission signal
When corresponding ceiling capacity threshold value, I is used to characterize the corresponding current value of required transmission signal on the signal transmission link.
In an embodiment of the invention, connect respectively in the N number of output sublink on the signal transmission link
The resistance of resistance is 0ohm.
In an embodiment of the invention, connect respectively in the M output sublink on the signal transmission link
The capacitance of electric capacity is identical.
In sum, each embodiment of the invention can at least realize following beneficial effect：
1st, in embodiments of the present invention, during the signal transmission link that design is realized on the basic board for obtaining, lead to
Cross in threshold range of the total capacitance value for ensureing institute's series capacitance on signal transmission link in setting, on signal transmission link
Realize that BOM switches by series resistance in other output sublinks, because total capacitance value is in setting on signal transmission link
Threshold range, and the threshold range is the scope that ensure that signal transmission energy, therefore, this programme can ensure that the signal
The energy of institute's transmission signal on transmission link.
2nd, in embodiments of the present invention, R is not more than by total resistance of connecting on signal transmission linkmaxN number of resistance,
Can ensure that the energy that transmission signal is consumed on signal transmission link is less than ceiling capacity threshold value, so as to realize signal
Normal transmission.
3rd, in embodiments of the present invention, because the resistance connected on signal transmission link is less, signal transmission is disappeared
The energy of consumption is less, and the purpose of series resistance is to turn on signal transmission link, therefore, by the signal transmission
Resistance of the upper resistance of connecting respectively in N number of output sublink on link for 0ohm, thereby may be ensured that the consumption transmission of minimum
The energy of signal.
4th, in embodiments of the present invention, by connecting respectively in the M output sublink on the signal transmission link
Upper capacitance identical electric capacity, according to threshold range and the capacitance of each series capacitance, it may be determined that go out the electricity that can be connected
The number of appearance, such that it is able to quick design high speed board is completed, and improves efficiency.
The contents such as the information exchange between each unit, implementation procedure in said apparatus, due to implementing with the inventive method
Example is based on same design, and particular content can be found in the narration in the inventive method embodiment, and here is omitted.
It should be noted that herein, such as first and second etc relational terms are used merely to an entity
Or operation makes a distinction with another entity or operation, and not necessarily require or imply presence between these entities or operation
Any this actual relation or order.And, term " including ", "comprising" or its any other variant are intended to non-
Exclusiveness is included, so that a series of process, method, article or equipment including key elements not only includes those key elements,
But also including other key elements being not expressly set out, or also include solid by this process, method, article or equipment
Some key elements.In the absence of more restrictions, the key element for being limited by sentence " including ", does not arrange
Except also there is other same factor in including the process of the key element, method, article or equipment.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of said method embodiment can pass through
Completing, aforesaid program can be stored in the storage medium of embodied on computer readable the related hardware of programmed instruction, the program
Upon execution, the step of including said method embodiment is performed；And aforesaid storage medium includes：ROM, RAM, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
It is last it should be noted that：Presently preferred embodiments of the present invention is the foregoing is only, the skill of the present invention is merely to illustrate
Art scheme, is not intended to limit protection scope of the present invention.All any modifications made within the spirit and principles in the present invention,
Equivalent, improvement etc., are all contained in protection scope of the present invention.
Claims (8)
1. a kind of BOM changing methods, it is characterised in that include：
Acquisition includes the basic board of input link and at least L rank handoff links；The handoff links bag of each rank
Include at least two output sublinks；
Determine the signal transmission link realized needed for the basic board；The signal transmission link includes：Input link and extremely
The output sublink that handoff links in few two adjacent ranks include；Wherein, the signal transmission link is path；
Electric capacity on connecting respectively in the M output sublink on the signal transmission link, and in the signal transmission chain
Connect respectively in N number of output sublink on road upper resistance so that on the signal transmission link series capacitance total capacitance value
In threshold range in setting；
Wherein, M, N, L are the integer not less than 1, and M+N is not more than L.
2. BOM changing methods according to claim 1, it is characterised in that the N number of output on the signal transmission link
Connect respectively in sublink before upper resistance, further include：Determine corresponding in transmission signal on the signal transmission link
Ceiling capacity threshold value；Determine the corresponding current value of required transmission signal on the signal transmission link；And according to first
The maximum resistance of the total resistance of all resistance correspondence that formula determination is connected in the N number of output sublink on the signal transmission link
Value；
First formula includes：
Wherein, RmaxFor characterizing the maximum value, PmaxFor characterizing the ceiling capacity threshold value, I is used to characterize institute
State the corresponding current value of required transmission signal on signal transmission link.
3. BOM changing methods according to claim 1 and 2, it is characterised in that described on the signal transmission link
Resistance on connecting respectively in N number of output sublink, including：In N number of output sublink on the signal transmission link respectively
Resistance is the resistance of 0ohm in series connection.
4. BOM changing methods according to claim 1, it is characterised in that the M on the signal transmission link
Export and connect respectively in sublink upper electric capacity, including：Connect respectively in the M output sublink on the signal transmission link
Upper capacitance identical electric capacity.
5. a kind of board, it is characterised in that be made using the BOM changing methods described in the claims 1；Wherein, make
The board made includes basic board and signal transmission link, and the signal transmission link includes：Input link and at least
The output sublink that handoff links in two adjacent ranks include；Wherein, the signal transmission link is path；
It is in series with respectively on electric capacity, and the signal transmission link in M output sublink on the signal transmission link
N number of output sublink on be in series with the total capacitance value of series capacitance on resistance, and the signal transmission link respectively in setting
In fixed threshold range；
M, N, L are the integer not less than 1, and M+N is not more than L.
6. board according to claim 5, it is characterised in that in the N number of output sublink on the signal transmission link
There is following relation in the maximum value of the total resistance of all resistance correspondence of series connection：
Wherein, RmaxFor characterizing the maximum value, PmaxFor characterizing on the signal transmission link in transmission signal pair
The ceiling capacity threshold value answered, I is used to characterize the corresponding current value of required transmission signal on the signal transmission link.
7. the board according to claim 5 or 6, it is characterised in that the N number of output subchain on the signal transmission link
The resistance of the resistance connected respectively on road is 0ohm.
8. board according to claim 5, it is characterised in that the M output sublink on the signal transmission link
The capacitance of the upper electric capacity connected respectively is identical.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611149485.6A CN106598890B (en) | 2016-12-13 | 2016-12-13 | BOM switching method and board card |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611149485.6A CN106598890B (en) | 2016-12-13 | 2016-12-13 | BOM switching method and board card |
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|---|---|---|---|---|
| CN102238454A (en) * | 2010-04-23 | 2011-11-09 | 歌尔声学股份有限公司 | ECM (electret condenser microphone) switching circuit and method |
| CN102298101A (en) * | 2010-06-24 | 2011-12-28 | 神基科技股份有限公司 | Detection device for bus connection |
| CN203012708U (en) * | 2012-12-15 | 2013-06-19 | 南京航空航天大学 | Four-way Flex Ray bus communication module |
| US20140087673A1 (en) * | 2012-09-23 | 2014-03-27 | Dsp Group, Ltd. | CMOS Based TX/RX Switch |
| CN104134918A (en) * | 2014-07-29 | 2014-11-05 | 浪潮电子信息产业股份有限公司 | Method for changing characteristic impedance of signal transmission link |
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2016
- 2016-12-13 CN CN201611149485.6A patent/CN106598890B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102238454A (en) * | 2010-04-23 | 2011-11-09 | 歌尔声学股份有限公司 | ECM (electret condenser microphone) switching circuit and method |
| CN102298101A (en) * | 2010-06-24 | 2011-12-28 | 神基科技股份有限公司 | Detection device for bus connection |
| US20140087673A1 (en) * | 2012-09-23 | 2014-03-27 | Dsp Group, Ltd. | CMOS Based TX/RX Switch |
| CN203012708U (en) * | 2012-12-15 | 2013-06-19 | 南京航空航天大学 | Four-way Flex Ray bus communication module |
| CN104134918A (en) * | 2014-07-29 | 2014-11-05 | 浪潮电子信息产业股份有限公司 | Method for changing characteristic impedance of signal transmission link |
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