CN1464712A - Method for clock signal compatibility between data communication equipment and data terminal equipment - Google Patents
Method for clock signal compatibility between data communication equipment and data terminal equipment Download PDFInfo
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- CN1464712A CN1464712A CN 02121382 CN02121382A CN1464712A CN 1464712 A CN1464712 A CN 1464712A CN 02121382 CN02121382 CN 02121382 CN 02121382 A CN02121382 A CN 02121382A CN 1464712 A CN1464712 A CN 1464712A
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Abstract
The present invention discloses a clock signal compatible method for data communication equipment (DCE) and data terminal equipment (DTC) comprising, (A) initializing the internal clock source of the DCE or DTE to provide clock signal to the receiving clock / receiving data module of the device of itself, forming the receiving clock of the device, providing clock signal to the sending data / sending clock module in the device, forming the sending clock of itself. (B) transferring the created receiving clock signal of the data communication equipment and the sending clock signal of the data terminal equipment to the sending data / sending clock module and receiving clock / receiving data module of the opposite end, forming the sending clock signal and receiving clock signal of the opposite end. The method of by the invention solves the compatibility problem of the clock processing mode of various type of data communication equipment (DCE) and data terminal equipment (DTC).
Description
Technical field
The present invention relates to the data communication field, specifically, relate to the method for a kind of data communications equipment and data terminal equipment clock signal compatibility.
Background technology
A basis of data communication is that each communication equipment is the terminal kind equipment, as data terminal equipment (DTE) or communication class equipment, as data communication equipment (DCE).DTE equipment uses communications facility; Dce device provides the connection even the realization of communications facility, transmitting data information.
The interface standard of DTE equipment and dce device meets the V series suggestion that ITU (CCITT) formulates.At present, the clock processing mode of various DTE, dce device interface is various, is example with interface V.35, and summary is got up, and is roughly three kinds: inner mode, from mode, external mode.
Referring to shown in Figure 1, Fig. 1 is that DCE, DTE equipment work are in inner mode schematic diagram.Aspect the transmission and reception of data, transmission data/tranmitting data register module 16 in the dce device is that reception data/receive clock module 14 in the DTE equipment 11 send data by 104RD (Data Receiving) holding wire to opposite equip., the receive clock of dce device 10/receptions data module 17 by the reception of 103TD (data transmission) holding wire from data that the tranmitting data register in the DTE equipment/the receive clock module is sent.Aspect the transmission and reception of clock signal, dce device 10 internal clock sources 12 provide tranmitting data register by the tranmitting data register/transmission data module 15 of 114TC (clock transmission) holding wire in DTE equipment 11, provide receive clock by the reception data/receive clock module 14 of 115RC holding wire (receive clock) in DTE equipment 11.DTE equipment 11 provides the clock loop back function simultaneously,, by 113ETC holding wire (clock loopback) tranmitting data register of tranmitting data register/transmission data module 15 is sent back to dce device 10 more that is.
Referring to shown in Figure 2, Fig. 2 is DCE, DTE equipment work in from the mode schematic diagram.Aspect the transmission and reception of data, identical with Fig. 1.Aspect the transmission and reception of clock signal, dce device 10 internal clock sources 12 provide receive clock by the 115RC holding wire to the reception data/receive clock module 14 of DTE equipment 11, the receive clock that is provided provides tranmitting data register to the tranmitting data register/transmission data module 15 of DTE equipment 11 simultaneously, and this tranmitting data register is given dce device 10 by 113 ETC holding wire loopbacks.
Referring to shown in Figure 3, Fig. 3 is that DCE, DTE equipment work are in the external mode schematic diagram.Aspect the transmission and reception of data, identical with Fig. 1.Aspect the transmission and reception of clock signal, the internal clock source 13 of DTE equipment 11 provides tranmitting data register to the tranmitting data register/transmission data module 15 of in-house facility, and pass through 113 ETC holding wires to dce device 10 loopback clock signals, form the receive clock/reception data module 17 in the dce device 10 respectively, send the receive clock signal of data/tranmitting data register module 16, the tranmitting data register signal, wherein, the tranmitting data register signal of transmission data/tranmitting data register module 16 provides the receive clock signal by the 115RC holding wire to the reception data/receive clock module 14 that provides of DTE equipment 11 again.
Because it is various that the clock of DTE and dce device is handled, various types of DTE and dce device clock echoplex mode are different, cause between the equipment might owing to clock selecting not to producing professional obstructed phenomenon, still none can compatible all kinds DTE and the solution of dce device clock processing mode at present.
Summary of the invention
The object of the present invention is to provide the method for a kind of data communications equipment and data terminal equipment clock signal compatibility,, improve the reliability of interface so that all kinds DTE and dce device clock processing mode are compatible.
The method of data communications equipment provided by the present invention and data terminal equipment clock signal compatibility is achieved in that
The method of a kind of data communications equipment and data terminal equipment clock signal compatibility, this method comprises at least:
A., the receive clock/reception data module of internal clock source in in-house facility that data communications equipment or data terminal equipment are set provides clock signal, form the receive clock of this equipment, transmission data/tranmitting data register module in in-house facility provides clock signal, forms the tranmitting data register of this equipment;
B. the tranmitting data register signal of the receive clock signal of the data communications equipment that forms or data terminal equipment is delivered to the transmission data/tranmitting data register module and receive clock/the receptions data module of opposite end respectively, the tranmitting data register signal and the receive clock signal of formation opposite end.
This method may further include:
C. the tranmitting data register signal of described data communications equipment is offered the receive clock/reception data module of data terminal equipment by the receive clock holding wire as the receive clock signal of data terminal equipment.
This method can further include:
D. after the receive clock signal of the formed data communications equipment of steps A being delivered to the opposite end, again by returning the internal clock source that the tranmitting data register holding wire is recycled to data communications equipment.
Wherein, the receive clock signal of the formed data communications equipment of steps A provides to data terminal equipment by tranmitting data register holding wire in this equipment.
The tranmitting data register signal of the formed data terminal equipment of steps A is to provide to data communications equipment by the tranmitting data register holding wire that returns in this equipment.
The present invention provides by the tranmitting data register signal of DTE equipment tranmitting data register/transmission data module is received data/receive clock module as the receive clock signal of this equipment to it; Perhaps the clock signal that internal clock source provided with DTE equipment provides receive clock to the reception data/receive clock module of this equipment, no matter realized how loopback clock of opposite end, loopback clock not even, also no matter which kind of mode opposite equip. works in, DTE and dce device all can be handled flexibly, operate as normal has realized that all kinds DTE and dce device clock processing mode are compatible.
Description of drawings
Fig. 1 is that DCE, DTE equipment work are in inner mode schematic diagram.
Fig. 2 is DCE, DTE equipment work in from the mode schematic diagram.
Fig. 3 is that DCE, DTE equipment work are in the external mode schematic diagram.
When Fig. 4 only provides clock signal by the 114TC holding wire for DCE, DTE equipment clock implementation schematic diagram.
Fig. 5 provides clock signal and DCE when the DTE loopback clock for DTE, DTE equipment clock implementation schematic diagram.
Fig. 6 provides clock signal and DCE not when the DTE loopback clock for DTE, DTE equipment clock implementation schematic diagram.
Embodiment
For make purpose of the present invention, technical scheme, and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Embodiment 1: the clock that uses the dce device internal clock source to be provided.
If clock signal that dce device provided only sends to DTE equipment by the 114TC holding wire, and 115RC holding wire tranmitting data register signal not, then DTE equipment selectively operating is in inner mode, and dce device is operated in inner mode.Referring to shown in Figure 4.Aspect the transmission and reception of data, same as the prior art; Aspect the transmission and reception of clock signal, transmission data/tranmitting data register the module 16 of dce device 10 internal clock sources 12 in equipment of itself, receive clock/reception data module 17 provides clock signal to form the tranmitting data register signal of dce device respectively, the receive clock signal, wherein, the receive clock signal provides tranmitting data register by the 114TC holding wire to DTE equipment 11 tranmitting data registers/transmission data module 15, simultaneously, reception data/receive clock module 14 to this equipment provides the receive clock signal, even realized not tranmitting data register signal or 115RC holding wire tranmitting data register fault occurs of 115RC holding wire, and, even DTE equipment is not sent dce device 10 back to by the 113ETC holding wire, DTE equipment also can operate as normal.
If clock signal that dce device provided only sends to DTE equipment by the 115RC holding wire, and 114TC tranmitting data register signal not, then DTE equipment selectively operating is from mode, and dce device can be operated in from mode.Therefore, can not do any change from mode to of the prior art, can be referring to shown in Figure 2.Dce device 10 internal clock sources 12 provide receive clock by the 115RC holding wire to the reception data/receive clock module 14 of DTE equipment 11, this receive clock provides tranmitting data register to the tranmitting data register/transmission data module 15 of DTE equipment 11 simultaneously, and this tranmitting data register is given dce device by 113 ETC holding wire loopbacks, even realized not tranmitting data register signal or 114TC holding wire tranmitting data register fault occurs of 114TC holding wire, DTE equipment also can operate as normal.
If dce device all send clock at 115RC holding wire and 114TC holding wire, DTE equipment can select to be operated in above-mentioned inner mode or a kind of from mode.
If DTE equipment has loopback clock signal function, that is, to DCE loopback clock, at this moment the dce device selectively operating is in inner mode or a kind of from mode by the 113ETC holding wire for DTE equipment.
Embodiment 2: the clock that uses DTE device interior clock source to be provided.
When using DTE equipment that clock signal is provided, to DTE interface loopback clock signal, at this moment the DTE equipment work is in external mode by the 115RC holding wire for dce device, and dce device works in external mode.Referring to shown in Figure 5.Reception data/receive clock the module 14 of the internal clock source 13 of DTE equipment 11 in equipment of itself provides the receive clock signal, and the while provides the tranmitting data register signal to the tranmitting data register/transmission data module 15 of equipment of itself, wherein, the tranmitting data register signal is given the receive clock/reception data module 17 in the dce device 10 and is sent data/tranmitting data register module 16 by the loopback of 113ETC holding wire, forms the receive clock signal and the tranmitting data register signal of dce device respectively; The receive clock signal that the tranmitting data register signal of dce device can be used as DTE is again delivered to reception data/receive clock module 14 in the DTE equipment 11 by the 115RC holding wire.
When dce device did not pass through the 115RC holding wire to DTE equipment loopback clock signal, similarly, DTE equipment also can work in external mode, and dce device works in external mode.Referring to shown in Figure 6.Although dce device 10 does not pass through the 115RC holding wire to DTE equipment 11 tranmitting data register signals, but the internal clock source 13 of DTE equipment 11 provides the receive clock signal to the reception data/receive clock module 14 of equipment of itself, and the while provides the tranmitting data register signal to the tranmitting data register/transmission data module 15 of equipment of itself, this clock signal is given the receive clock/reception data module 17 in the dce device 10 and is sent data/tranmitting data register module 16 by the loopback of 113ETC holding wire, forms the receive clock signal and the tranmitting data register signal of dce device respectively.
When using the clock that DTE provided, by providing the change of receive clock signal to the reception data/receive clock module of equipment of itself to DTE device interior clock source, no matter realized whether loopback clock of opposite end, the loopback clock failure perhaps appears, but the equal operate as normal of dce device, DTE equipment.
By above-mentioned two embodiment, under the various clock processing modes of containing general substantially, dce device, DTE equipment compatible realized docking successfully with the V35 interface of various producers, improved the reliability of equipment interface simultaneously.
Claims (5)
1, the method for a kind of data communications equipment and data terminal equipment clock signal compatibility is characterized in that this method comprises at least:
A., the receive clock/reception data module of internal clock source in in-house facility that data communications equipment or data terminal equipment are set provides clock signal, form the receive clock of this equipment, transmission data/tranmitting data register module in in-house facility provides clock signal, forms the tranmitting data register of this equipment;
B. the tranmitting data register signal of the receive clock signal of the data communications equipment that forms or data terminal equipment is delivered to the transmission data/tranmitting data register module and receive clock/the receptions data module of opposite end respectively, the tranmitting data register signal and the receive clock signal of formation opposite end.
2, method according to claim 1 is characterized in that, this method further comprises:
C. the tranmitting data register signal of data communications equipment is offered the receive clock/reception data module of data terminal equipment by the receive clock holding wire as the receive clock signal of data terminal equipment.
3, method according to claim 1 is characterized in that, this method further comprises:
D. after the receive clock signal of the formed data communications equipment of steps A being delivered to the opposite end, again by returning the internal clock source that the tranmitting data register holding wire is recycled to data communications equipment.
According to claim 1,2,3 described methods, it is characterized in that 4, the receive clock signal of the formed data communications equipment of steps A provides to data terminal equipment by the tranmitting data register holding wire.
According to claim 1,2,3 described methods, it is characterized in that 5, the tranmitting data register signal of the formed data terminal equipment of steps A provides to data communications equipment by returning the tranmitting data register holding wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02121382 CN1249970C (en) | 2002-06-18 | 2002-06-18 | Method for clock signal compatibility between data communication equipment and data terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02121382 CN1249970C (en) | 2002-06-18 | 2002-06-18 | Method for clock signal compatibility between data communication equipment and data terminal equipment |
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| Publication Number | Publication Date |
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| CN1464712A true CN1464712A (en) | 2003-12-31 |
| CN1249970C CN1249970C (en) | 2006-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 02121382 Expired - Fee Related CN1249970C (en) | 2002-06-18 | 2002-06-18 | Method for clock signal compatibility between data communication equipment and data terminal equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710858A (en) * | 2009-11-23 | 2010-05-19 | 中兴通讯股份有限公司 | Method for selecting clock source and data communication equipment |
| CN101771617A (en) * | 2010-03-08 | 2010-07-07 | 瑞斯康达科技发展股份有限公司 | Method and system for following point-to-point bandwidth, remote terminal equipment and home terminal equipment |
| WO2011103831A2 (en) * | 2011-04-18 | 2011-09-01 | 华为技术有限公司 | Clock signal transfer method in communication network system and the communication network system thereof |
| CN106500739A (en) * | 2016-11-18 | 2017-03-15 | 威科达（东莞）智能控制有限公司 | A kind of method communicated with absolute value encoder |
| CN112146113A (en) * | 2020-09-28 | 2020-12-29 | 苏州格林热能设备有限公司 | Improved fire grate of combustion furnace |
-
2002
- 2002-06-18 CN CN 02121382 patent/CN1249970C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710858A (en) * | 2009-11-23 | 2010-05-19 | 中兴通讯股份有限公司 | Method for selecting clock source and data communication equipment |
| WO2011060678A1 (en) * | 2009-11-23 | 2011-05-26 | 中兴通讯股份有限公司 | Method and data communication equipment for selecting clock source |
| CN101771617A (en) * | 2010-03-08 | 2010-07-07 | 瑞斯康达科技发展股份有限公司 | Method and system for following point-to-point bandwidth, remote terminal equipment and home terminal equipment |
| CN101771617B (en) * | 2010-03-08 | 2013-07-10 | 瑞斯康达科技发展股份有限公司 | Method and system for following point-to-point bandwidth, remote terminal equipment and home terminal equipment |
| WO2011103831A2 (en) * | 2011-04-18 | 2011-09-01 | 华为技术有限公司 | Clock signal transfer method in communication network system and the communication network system thereof |
| WO2011103831A3 (en) * | 2011-04-18 | 2012-04-19 | 华为技术有限公司 | Clock signal transfer method in communication network system and the communication network system thereof |
| CN106500739A (en) * | 2016-11-18 | 2017-03-15 | 威科达（东莞）智能控制有限公司 | A kind of method communicated with absolute value encoder |
| CN106500739B (en) * | 2016-11-18 | 2019-01-25 | 威科达（东莞）智能控制有限公司 | A method of it is communicated with absolute value encoder |
| CN112146113A (en) * | 2020-09-28 | 2020-12-29 | 苏州格林热能设备有限公司 | Improved fire grate of combustion furnace |
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| CN1249970C (en) | 2006-04-05 |
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