JPH09305526A - Intra-device wiring connection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intra-device wiring connection system with which the maintainability of a device is improved by preventing the erroneous connection of a cable to be generated in the case of exchanging units because of a change in a device function and the degree of integration of mounted function inside the device is improved corresponding to the variation of functions. SOLUTION: Confronted source units 2 and 3 to be mounted at the same unit mount position are provided with identification signal generating means 211 and 311 for generating identification signals showing their functions. On the other hand, a confront destination unit 1 connected through an intra-device connecting cable 4 to the confronted source units is provided with an identification signal discriminating means 111 for discriminating the class of the confronted source units based on these identification signals and a signal switching means 112 for inputting the signals transmitted from the confronted source units to function blocks 113 and 114 corresponding to the functions of the confronted source units according to the discriminated results of this identification signal discriminating means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, in order to realize a plurality of functions in a transmission apparatus composed of a plurality of units, replaces units or packages having different functions within a limited mounting space within the apparatus. It relates to the wiring connection method in the equipment to be added.

[0002]

2. Description of the Related Art Information processing systems such as transmission and exchange are
It is composed of a main signal processing unit such as an interface processing unit and a multiplex processing unit of a transmission line, and a monitoring control unit for monitoring and controlling them. Generally, such a device component is realized as a package for each function. As shown in FIG. 5, these packages have a back wiring board 51.
It is removably attached to a slot (not shown) connected by a signal line above. The back wiring board 51 and the plurality of packages 52 connected to the back wiring board 51 are called a unit. The function as a transmission device is that the plurality of units as described above are mounted on a unit mounting rack or the like, and as shown in FIG. 6, the connectors 61 provided on the back wiring board 51 are wired in the unit mounting rack. It is configured by connecting with an in-device wiring cable 4.
Under such a structure, a transmission device can be replaced with a plurality of different ones by exchanging packages or units or adding or removing the packages or units according to the size of the device, the type of interface to be accommodated, the type of signal processing, and the like. The function is realized by one device. Particularly, in order to cope with diversification of device functions, it is becoming more and more important to replace a plurality of units or packages having different functions as options.

As a method for expanding the function of the apparatus by connecting packages or units having different functions while using the wiring on the same back wiring board and the wiring cable in the apparatus, for example, Japanese Patent Laid-Open No. 3-46050.
There is an "I / O device expansion method" described in the publication.
This relates to a method of connecting a new input / output device to a central control device, which has a limited number of control channels and a plurality of input / output devices, in an information processing system such as a switchboard due to functional expansion. Is. The block diagram is shown in FIG. The original unit 72 is equipped with a first input / output control device 722 and a second input / output control device 723. These two input / output control devices 722 and 723 are connected to the central control device 71 by a bus 74 and a control channel 76 via a gate circuit 7211 in a bus control circuit 721 as a bus switching means. On the other hand, the expansion unit 73 is equipped with a third input / output control device 731 that performs the same operation as the above-mentioned second input / output control device but provides an expanded function. This third
The input / output control device 731 is also connected to the central control device 71 by the bus 74 and the control channel 76, like the original unit 72. Further, the device selection signal 75 from the central control unit 71 is transmitted to the bus control circuit 721 of the source unit 72.
Via the first and second input / output control devices 722, 72
3 is input to the third input / output control device 731.
Also, the common device selection signal 75 is input to this.

In this conventional system, in order to change the function of the second input / output control device 723, the original unit 72 is provided with a switching means, and the control channel 76 is used as the second input / output control device of the original unit 72. 723 and the third input / output control device 731 of the expansion unit 73 are commonly connected. Accordingly, when the central control unit 71 selects the second input / output control unit 723 by the device selection signal 75, the function of the second input / output control unit 723 is stopped and the third input / output control unit 723 mounted on the expansion unit 73 is stopped. Only the input / output control device 731 is operated.

[0005]

In the conventional transmission apparatus, due to the restrictions on the physical and logical interface conditions of the wiring on the back wiring board and the wiring cable in the apparatus, the package and unit to be arranged in the apparatus are restricted. Functions were determined by their mounting position.
That is, at a specific mounting position, only packages or units that are functionally identical or similar can be mounted. Therefore, the wiring on the back wiring board and the signal line in the wiring cable in the device have been used for physically and logically exchanging the same signal.

However, in order to achieve high-density mounting of each part of the device as the function of the transmission device is advanced, the terminals for connecting the packages on the back wiring board and the units allocated for the wiring cable in the device are inserted. The output terminals are decreasing relatively. If it was unavoidable that a plurality of packages having different functions could be mounted in the same slot in the unit, the wiring on the back wiring board had to be used separately for each function of the package. Similarly, when a plurality of units having different functions can be mounted at the same mounting position in the device, an in-device wiring cable corresponding to each unit is prepared in advance, and each unit to be mounted is different. I had to use an internal wiring cable. As a result, as the functions of the equipment become more diverse, the wiring on the back wiring board and the wiring cables inside the equipment increase and become complicated, and at the same time, when the units mounted due to the change of the equipment function are replaced, When connecting the internal wiring cables, it is easy to cause incorrect connection of the cables,
There is a problem that the maintainability of the device is reduced.

An object of the present invention is to reduce the work of reconnecting the in-device wiring cable due to the change of the device function, thereby preventing erroneous connection of the cable occurring when the unit is replaced, and improving the maintainability of the device. Provide an intra-device wiring connection system that improves the degree of integration of on-board functions into the device by improving the number of wirings on the back wiring board and the intra-device wiring cable due to the diversification of functions of the transmission device. Especially.

[0008]

In order to achieve the above-mentioned object, an in-apparatus wiring connection system according to the present invention is composed of a plurality of units, and an opposite source unit mounted at the same unit mounting position. In a transmission device in which opposite units facing each other are connected by an in-device wiring cable, and a plurality of units having different functions can be selectively mounted at the same unit mounting position as opposite source units,
The opposite source unit that can be mounted at the same unit mounting position is provided with identification signal generating means for generating an identification signal indicating its function, while the opposite unit connected to the opposite source unit by the intra-device wiring cable Based on the identification signal determination means for determining the type of the opposite source unit based on the determination result of the identification signal determination means, the transmission signal transmitted from the opposite source unit via the in-device wiring cable is used as the opposite source in the opposite destination unit. Signal switching means for inputting to a functional block corresponding to the function of the unit.

Thus, the opposite unit automatically selects a functional block corresponding to the function from the plurality of functional blocks in the opposite unit based on the identification signal indicating the function of the opposite unit. Therefore, only by matching the physical interface between the units,
The same intra-device wiring cable can be used to accommodate the logical interfaces of units with different functions.

Further, in the intra-device wiring connection system according to the present invention, in the transmission device capable of selectively mounting a plurality of packages having different functions in the opposing source unit in the same slot, the opposing device can be mounted at the same unit mounting position. The package in the original unit is characterized by including identification signal generating means for generating an identification signal indicating its function.

In the in-apparatus wiring connection system according to the present invention, the package in the facing unit determines the type of the package in the facing unit based on the identifying signal, and the identifying signal determining means. The transmission signal transmitted from the package in the opposite unit according to the determination result of the determining unit via the in-device wiring cable is suitable for the function of the package in the opposite unit provided in the package in the opposite unit. And a signal switching unit for inputting to the functional block.

As a result, based on the identification signal indicating the package function of the opposite source, the opposite unit or the package in the opposite unit is selected from the plurality of functional blocks in the opposite unit or the package of the opposite source. Automatically select the function block according to the function of. Therefore, the logical interfaces of the unit and the package having different functions can be accommodated by using the same intra-device wiring cable only by matching the physical interface between the unit and the package.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows, as a first embodiment of the present invention, a state in which a first unit 1 and a second unit 2 or a third unit 3 for the first unit 1 are mounted in an apparatus. Shows. Here, the first unit 1 is a facing unit, the second unit 2 and the third unit 3 are facing units in which only one of them can be installed in the apparatus as an optional unit, and the second unit 2 Alternatively, the third unit 3 that replaces the first unit is connected to the first unit via the common in-device wiring cable 4.
Connected to the unit 1. The second unit 2 or the third unit 3 at the opposite source includes the identification signal generating circuits 211 and 311 and the functional block A ′ 212, respectively.
The functional block B′312 is provided. On the other hand, the opposite first unit 1 includes the identification signal determination circuit 111 and the signal switching circuit 112 in addition to the functional block A113 and the functional block B114 corresponding to the function of the opposite source unit.
It has.

Opposing unit 2 or 3 generates an identification signal for identifying these units in identification signal generation circuits 211 and 311. Then, this identification signal is passed through the identification signal line 41 in the in-apparatus wiring cable 4 to identify the identification signal determination circuit 111 of the first unit 1 which is the opposite end.
Is input to At this time, the identification signal determination circuit 111 determines the type of the opposite source unit based on the identification signal, and controls the signal switching circuit 112 based on the determination result, thereby making the functional block 212 or 3 of the opposite source unit.
The transmission signal received from the transmission signal line 42 from the functional block 113 or 11 in the first unit 1
It will be input to the appropriate one of the four.

FIG. 2 is a circuit diagram of the first embodiment shown in FIG. 1, in which the identification signal determination circuit 111 and the signal switching circuit 112 of the opposing first unit 1 and the second and third opposing sources. Identification signal generation circuit 211 of the units 2 and 3,
It is a circuit diagram which shows the structure of 311. Here, the identification signal generation circuit 211 in the second unit is internally opened, while the identification signal generation circuit 311 in the third unit is internally grounded. Therefore, when the second unit is mounted, the identification signal generation circuit 211 outputs a high level (hereinafter referred to as “H”) to the identification signal line 41 by the input pull-up, and the third unit is mounted. In this case, the identification signal generating circuit 311 outputs a low level (hereinafter referred to as “L”) to the identification signal line 41 by grounding to GND. The resistor 43 is a pull-up resistor. That is, the second and third units, which are the opposing units, are identified by the "H" or "L" identification signal. In the first unit 1, the identification signal determination circuit 111 that has received the “H” or “L” identification signal sets the identification signal input level to the input / output buffer 1121 in the signal switching circuit 112, and A level obtained by inverting the identification signal is input to each of 1122 to open / close a transmission signal to the functional blocks A and B.

In the configuration shown in FIGS. 1 and 2, for example, when the second unit 2 is mounted, the identification signal generating circuit 211 sends out an identification signal of "H", which is transmitted through the identification signal line 41. It is input to the identification signal determination circuit 111 of the first unit 1. Then, the signal switching circuit 112
I / O buffer 1121 is open, I / O buffer 1
122 is closed, and the transmission signal input from the transmission signal line 42 to the first unit 1 is input to the functional block A113. When the third unit 3 is mounted on the opposite side, the identification signal of “L” is identified by the identification signal determination circuit 1.
11 is input. At this time, the input / output buffer 1121 corresponding to the functional block A113 of the first unit 1 is closed, and at the same time, the input / output buffer 1122 is opened, so that the functional block B114 and the functional block B′312 of the opposite destination and the original source are opposite. The connection with is established. In this embodiment, as described above, transmission signals can be transmitted / processed in the state where the functions of both the opposing unit and the opposing unit are matched with the same intra-device wiring cable. Note that although the input / output buffers 1121 and 1122 are used for the signal switching circuit 112 in this embodiment, equivalent performance can be obtained even when a transmission signal line is opened / closed by using a relay instead of the input / output buffer. You can

Next, as a second embodiment, a case of an apparatus having three or more types of units as an option of an opposite unit will be described with reference to FIG. FIG. 3A shows a case where m units are prepared as the opposing unit. At this time, the opposite first unit is
It has an identification signal determination circuit 111 including a decoder 1111, a signal switching circuit 112, and m functional blocks corresponding to the opposite source unit. Further, the signal switching circuit 112 has m input / output buffers corresponding to these functional blocks. FIG. 3B shows an identification signal transmitted by the identification signal generating circuit of the opposite source unit. Here, an identification signal composed of 4 bits is used. (However, in this case, it is assumed that m <2 ⁴ = 16 is satisfied.) Each identification signal generating circuit multiplexes the identification signal as described above in each identification signal generating circuit, and outputs the identification signal line 41 to the identification signal line 41. Send out. The identification signal determination circuit 111 of the opposite unit outputs the multiplexed identification signal to the decoder 111.
1 is decoded, the opening / closing of the input / output buffer in the signal switching circuit 112 is controlled by the result, and the transmission signal transmitted via the transmission signal line 42 is input to an appropriate functional block.

In the second embodiment, for example, as shown in FIG.
, The corresponding identification signal generation circuit 211 outputs the corresponding identification signal (“0001”) shown in FIG.
Is transmitted to the identification signal line 41. In the opposing first unit 1, the identification signal determination circuit 111 based on this identification signal
To open the input / output buffer 1121 in the signal switching circuit 112 and simultaneously close the other input / output buffers to connect the functional block A to the functional block A ′ (not shown) of the second unit. Establish.
In this embodiment, generally, the i-th
When the unit (2 <i <m + 1) is mounted, the signal switching circuit 11 in the first unit at the opposite end is installed.
2 is a functional block corresponding to the functional block of the i-th unit (for example, functional block B ′ of the third unit) based on the determination result of the identification signal determination circuit 111 (for example, functional block B in the first unit). ) To open and close a series of I / O buffers. In addition to the identification signal described above, a 4-bit frame is formed in synchronization with the opposite source and the opposite destination and sent using one identification signal line. It is also conceivable to allocate a line for transmission.

Next, as a third embodiment of the present invention, an in-apparatus wiring system in which the functional blocks of the opposing unit are distributed and mounted in a plurality of packages as shown in FIG. 4 will be described. Here, in the opposing second unit 2, the package 21 including the functional block A ′ 212 and the package 22 including the functional block C ′ 222 can be mounted at the same mounting position on the back wiring board 23. Further, the package 31 including the functional block B′312 can also be mounted. Furthermore, this third unit 3 is replaceable with the second unit 2. At this time, these packages 21, 22, 31 are provided with identification signal generating circuits 211, 221, 311 respectively. On the other hand, in the opposing first unit 1, the first package 11 having the functional blocks A113 and C114 and the second package 12 having the functional block B123 are arranged in the back wiring board 13 of the first unit 1. Implemented in. These two packages 1
1 and 12 are identification signal determination circuits 111 and 121, respectively.
And signal switching circuits 112 and 122.
Then, the identification signal generating circuits 211, 2 of the opposite source unit
The identification signal sent by 21 or 311 is transmitted from the back wiring board 23 or 33 via the identification signal line 41 in the common in-device wiring cable 4 to the first unit 1
Then, the signal is input from here to the identification signal determination circuits 111 and 121 of each package via the back wiring board 13 in the first unit 1. Then, based on the determination result of the identification signal determination circuit, the signal switching circuits 112 and 122 of the first and second packages 11 and 12 mounted on the opposite unit are controlled to transmit via the transmission signal line 42. The input transmission signal is the functional block A1.
Input to the appropriate one among 13, C114 or B123.

For example, the identification signal determination circuit 111 provided in the first package 11 of the first unit 1 is the identification signal generation circuit 211, 221, or 311 of the opposite source.
The identification signal transmitted by the device is input via the identification signal line in the in-device wiring cable 4, and the signal switching circuit 112 in the first package 11 is based on the determination result of the identification signal.
Control. For example, when the opposite source unit is the second unit 2 and the second unit 2 is mounted with the package 21 including the functional block A ′ 212, the first unit mounted on the first unit is used. Package 1 of 1
The signal switching circuit 112 in 1 is a functional block A114.
At the same time as establishing a connection with
Disconnect from the connection. Further, the signal switching circuit 122 of the second package 12 disconnects the transmission signal to the functional block B123. Similarly, a third block with a functional block B
When the unit 3 of 1 is mounted as the opposite source unit, the first package 1 mounted on the first unit 1
The signal switching circuit 112 of one package disconnects the transmission signal input to the functional blocks A113 and C114, while the signal switching circuit 122 of the second package 12 connects the functional block B123 and the functional block B′312 of the opposite source unit. Establishes a connection and functional block B'31
The transmission signal from No. 2 is input to the functional block B123.

[0021]

According to the present invention, the logical interfaces of a unit and a package having different functions are accommodated by the same in-device wiring cable only by matching the physical interface between the unit and the package. be able to. As a result, it is not necessary to separately prepare the wiring on the back wiring board and the wiring cable in the device to connect the packages or units having different functions, and thus the wiring on the back wiring board accompanying the increase in the function of the transmission device is required. Also, it is possible to avoid an increase in wiring cables in the device.

Since a package or unit having a different function can be replaced as an option with respect to one type of back wiring board or wiring cable in the device, terminals for connecting the packages on the back wiring board and wiring in the device can be installed. The number of input / output terminals of each unit allocated for cables can be minimized to improve the efficiency of accommodating in-device wiring cables, which in turn contributes to the realization of high-density mounting of each part of the device by improving the device functions. it can.

Further, it is not necessary to prepare an individual in-apparatus wiring cable for each unit type having a different function as in the conventional case, and the number of connectors can be reduced. In addition, it is possible to reduce the erroneous connection of the cables and improve the maintainability of the device.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a circuit diagram showing configurations of an identification signal determination circuit 111 and a signal switching circuit 112 in FIG.

FIG. 3A is a block diagram showing a second embodiment of the present invention in the case where m units are provided as opposing source units, and FIG. 3B is a block diagram showing an identification signal generating circuit of the opposing source unit. It is an example of an identification signal to be transmitted.

FIG. 4 is a block diagram showing a third embodiment of the present invention in which the functional blocks of the facing unit are distributed and mounted in a plurality of packages.

FIG. 5 is a diagram showing a conventional connection form between packages.

FIG. 6 is a diagram showing a conventional connection form between units.

FIG. 7 is a block diagram showing an example of conventional in-device wiring.

[Explanation of symbols]

1, 2, 3, 5 ... Unit, 11, 12, 21, 22,
31 ... Package, 111, 121 ... Identification signal determination circuit, 1111 ... Decoder, 112, 122 ... Signal switching circuit, 1121, 1122, 1123 ... Input / output buffer, 113, 114, 123, 212, 222, 312
... Function block, 13,23,33 ... Back wiring board, 211, 221, 311, 511 ... Identification signal generating circuit, 4 ... In-apparatus wiring cable, 41 ... Identification signal line, 42 ... Transmission signal line, 43 ... Pull-up resistance.

Claims (3)

[Claims] 1. An opposing source unit, which is composed of a plurality of units and is mounted at the same unit mounting position, and an opposing destination unit, which is opposed to the opposing source unit, are connected by an intra-device wiring cable, and a plurality of units having different functions are opposed to each other. In a transmission device that can be selectively mounted at the same unit mounting position as a source unit, the opposite source unit that can be mounted at the same unit mounting position includes identification signal generating means for generating an identification signal indicating its function, The opposite unit connected to the opposite source unit by an in-device wiring cable, the identification signal determination means for determining the type of the opposite source unit based on the identification signal, according to the determination result of the identification signal determination means The transmission signal transmitted from the opposite source unit via the in-device wiring cable Device wiring connection method, characterized in that it comprises a signal switching means for inputting the unit function of the functional blocks in the opposite destination unit corresponding. 2. An opposite source unit, which is composed of a plurality of units and is mounted at the same unit mounting position, and an opposite destination unit opposite thereto are connected by an in-device wiring cable, and different functions are provided in the opposite source unit. In a transmission device capable of selectively mounting a plurality of packages having the same in the same slot, the packages in the opposite source unit that can be mounted at the same unit mounting position include an identification signal generating unit that generates an identification signal indicating its function. The opposite unit connected to the opposite source unit by the in-device wiring cable, identification signal determining means for determining the type of the package in the opposite source unit based on the identification signal, the identification signal According to the determination result of the determination means, from the package in the opposite source unit In the apparatus, there is provided a signal switching means for inputting a transmission signal transmitted through the internal wiring cable to a functional block in the opposite unit corresponding to the function of the package in the opposite unit. Wiring connection method. 3. An opposing source unit, which is composed of a plurality of units and is mounted at the same unit mounting position, and an opposing destination unit opposing thereto are connected by an in-device wiring cable, and different functions are provided in the opposing source unit. In a transmission device capable of selectively mounting a plurality of packages having the same in the same slot, the packages in the opposite source unit that can be mounted at the same unit mounting position include an identification signal generating unit that generates an identification signal indicating its function. A package in the opposite unit connected to the opposite unit by the in-apparatus wiring cable, identification signal determination means for determining the type of the package in the opposite unit based on the identification signal, According to the determination result of the identification signal determining means, the package in the opposite source unit is Signal switching means for inputting a transmission signal transmitted from a package via the in-device wiring cable to an appropriate functional block in the package in the opposite unit corresponding to the function of the package in the opposite unit. An in-apparatus wiring connection method comprising: