JPS60138622A - Bus extension method - Google Patents

Abstract

PURPOSE:To omit the parts for connection for improvement of reliability and to facilitate the extension of a system, by forming connection patterns for connection pins on a back board for connection of substrates as well as the corresponding connection pins of an input/output substrate. CONSTITUTION:For an input/output bus B2 on a back board 13, a pattern is formed for connection among inter-substrate connection pins 1a, 1b-5j and 5k. While another pattern is formed with an extension bus B'3 for connection among inter-substrate connection pins 6b, 6c-10h and 10j respectively. In addition, different connection patterns B3-A and B3-B are formed to input/output substrates 2-1a' and 2-2a' for connection among terminals P1-P5 and Q1-Q5 which connect the control signal lines of a control substrate to each bus B2 as well as among terminals P6-P10 and Q6-Q10 corresponding to the wirings of buses B3. The control, substrate of the board 13 is packed in response to a slot A with a substrate 2-1a' packed in response to a slot B. Furthermore a substrate 2-1a' corresponding to addition of functions is packed to slots C and D. Thus the buses can be easily extended to plural input/output substrates.

Description

Detailed Description of the Invention (Technical Field) The present invention basically consists of a control board and an input/output board controlled by the control board, and the boards are connected to each other by an inter-board connection bin. The present invention relates to a path expansion method in systems, for example, processor systems, which are interconnected via backboards formed by bus wiring.

(Prior art) Conventionally, this type of system, that is, a control board and one or more input/output boards controlled by the control board, are mounted on a backdate with the same specifications and wired. In interconnected systems, such as processor systems, the bus wiring on one backboard is preformed to accommodate the maximum number of input/output boards that can be controlled by the control board, and functions are added later. Input/output boards are added one after another according to the old situation. It is also conceivable to form a path wiring on one wire so that punctures can be accommodated as a unit.

However, in such a configuration, there is a need to add functions to the system, and if the upper limit of functions that can be accommodated on a single input/output board is exceeded, a new input/output board may be added and the existing input/output board may be added. It is necessary to physically connect to the control board, for example using a path expansion connector, and expand the system by expanding the bus. In this case, an input/output board and a control board will be used. In this way, conventional bus expansion requires parts such as connectors, or a new control board.
Therefore, there were problems in the reliability of the connection between the expanded boards, as well as in terms of economic efficiency, mounting, etc. less than,
A conventional example will be described in which a system is configured by mounting a control board and a plurality of input/output boards controlled by the control board on a backboard.

FIG. 1 shows an example of the configuration of a processor system. In the figure, CPU is a central processing unit that manages various controls within the system, and 1-1 to No. 3 are control boards on which electronic components (not shown) are mounted. , 2-1 a to 2-1 c,
2-2a to 2-2c, 2-,? a is equipped with electronic components (not shown), and the control boards 1-1 to 1-
This is an input/output board controlled by 3. Note that the input/output boards are group I consisting of 2 fla to 2-1c;
Each group consists of group ■ consisting of 2-2a to 2-2c and group 7'Ill consisting of 2-3a.
[, I may be electrically insulated. The boards in each group have the same function, control board 1-1 and input/output board 2-1a, control board No. 2 and input/output board 2-2a. The control board l-3 and the input/output board 2-3a form a basic configuration in pairs, and the other input/output boards 2-1br2-Jc+2-2b, 2-2 . c are expansion boards with added functions. Also, Bl is the central processing unit and controller.

An internal bus is used to exchange signals with the board.
B3 is an input/output path for transmitting signals between the control board and the input/output board, and B3 is an input/output path for physically connecting the control board forming the basic configuration and an additional input/output board, for example, by a connector for path expansion. The connection part is shown.

FIG. 2 is a diagram showing the system shown in FIG. 1 specifically mounted and configured using a Zy board, and is a perspective view showing an example of the configuration of pack beads and each board. In the figure, l-
1~)-3 and 2-1a~2-1c, 2-2a
2-2c and 2-Ja are a control board and an input/output board equivalent to those shown in FIG. 1, respectively. Also, 3 is for connection between boards. A back bead formed with a turn (not shown), 4 indicates a connector for a printed circuit board fixed on the board 3. Note that the central processing unit CPU shown in FIG. 1 is not illustrated here.

FIG. 3 shows an example of a pattern formed on the backboard 3 shown in FIG. 2. In the figure, Bl+B2 indicates the inside/gas and the outflow area, respectively, as in FIG. 1. And A- is a slot corresponding to the board insertion opening of the printed circuit board connector (see Figure 2) fixed to the surface of the notch hook 3, and the slot A I E I
The board insertion slots corresponding to slots J have control boards No. 1.1-2 and 1-3, respectively, and the board insertion slots corresponding to slots B, F, and K have input/output boards 2-1a + 2-2a.
, 3-3a is further slotted) Input/output boards 2-i b are inserted into the board insertion slots corresponding to slots C, D, G, and H as necessary.
r2-1c, 2J-2b, and 2-2c are each mounted as shown in FIG. Further, inter-board connecting vias 1h to 5a, lb to sb correspond to each slot A-.
, ~lj~5j, lk~5k are arranged, of which la
~5a and lb~5b, 18~5°C and 1d~5d11e
~5e and 1f~5f, 1g~5g and 7h~5h, 1j~
5j and 1 to 5 are mutually bus-wired, and input/output path B
2 is formed.

As described above, in the configurations shown in FIGS. 2 and 3, if there is a request to add functions to the control board 1-1 and input/output board 2-1a, which constitute the mounted board configuration, Input/output boards 2-1b and 2-1c will be added, but in this case, the inter-board connection bins 1b to 5 corresponding to slot)B where the input/output board 2'-1b is mounted
b, and the slot l in which the additional input/output board 2-1c is mounted.
-C must be electrically connected to the inter-board connection bins lc to 5c.

For this purpose, FIG. 4 shows an example in which an expansion connector 5 is fixed to a board connection pin on the backboard 3 as the electrical connection means. That is, in FIG. 3, the board connection bin l in slot B
b to 5b and lc to 5C of the corresponding slot C were connected by the connector 5 (corresponding to B3 in FIG. 1) to perform path expansion. Similarly, when adding input/output boards 2-2b and 2-20 by adding functions to the basic configuration of the control board No. 2 and input/output board 2-2a that form a pair, the back is one board up. This is done by fixing the expansion connector to the board connection bin. That is, path expansion was performed by connecting slots 1f to 5f of slot F and the corresponding slot G using expansion connectors.

However, as mentioned above, the conventional path extension method as mentioned above has problems in terms of connection reliability, economy, implementation, etc.

(Object of the Invention) The present invention has been made in consideration of these problems, and it is possible to easily expand the system and improve reliability without using any parts for connection. The purpose of this paper is to provide a path extension method that achieves this goal.

(Structure of the Invention) That is, the present invention provides connection patterns on the connection bins on the backboard for connection between boards and the corresponding connection bins on the input/output boards. This eliminates the need for connecting parts such as connectors and achieves the above object.

Hereinafter, the present invention will be explained using the drawings.

(Embodiment of the Invention) FIG. 5 is a diagram showing an embodiment of the path extension method according to the present invention.
The pattern surface formed on the backboard is shown in the same way as in the conventional case shown in the figure.

B1 and B2 are the same internal paths and input/output paths as in FIG. Furthermore, 2-1a'
l 2-2a' (d Connection for lotus expansion/Turn B
3-A and B3-B, and the input/output board 2-1a' is the slot B-D on the pack boat No. 3.
The single output board 2-2a' is attached to a connector (not shown) that is fixed correspondingly to the slot on the pack bead 13) F-H.
They are respectively mounted on connectors that are fixed in correspondence with the connectors. In addition, control boards (not shown) are mounted on the connectors to which the packs are fixed corresponding to the slots A, E, and J on the card 13, respectively, as in the conventional explanation.

Here, the pack includes one card 13 and an input/output board 2-Ja
,, Let's take a look at the nota/ in 2-2a. First, regarding the input/output bus B2 on the pack bead 13, as shown in the figure, the inter-board connection bins 1a and 7b are connected.

2a and 2b, 3a and Jb, 4a and 4b, 5a and 5
A pattern is formed to connect b + 1 c and lL"'+ 5c and 5d, ~, lj and lk + 2J and 2, ..., 5j and 5k. Also, regarding the expansion path B3', between the boards Connection bins 6b and 5c, 7b and 7c.

8b and 8c, 9b and 9c, 10b and 10c, 6d and 6
e,, -10d and 10c, ~, 6h and (li
j.

A pattern connecting 7 and 7j, . . . , lOh and lOj is formed. Furthermore, input/output boards 2-1a' and 2
-2a' includes terminals P0 to P5 and Q1 to Q5, each corresponding to the input/output path B2 and connected to the control signal line (not shown) of the control board, and a terminal corresponding to the wiring of the expansion path B3', as shown in the figure. A preselected number of connection turns B3 that connect P6~PIG and Q6~Qlo.
A + B 3-B- is formed by four different turns.

Here, i? Backboard 1 with turns
3, the first control board is mounted to correspond to slot A as described in Fig. 3, and the input/output board 2-Ja', which forms the basic configuration, is mounted to correspond to slot B. Matched input/output board 2-. 7a
' is implemented on C and D. When these boards are mounted, the control board is connected to the terminal Pl of the input/output board 2-1a' mounted corresponding to slot B through the inter-board connection pins 1a and 1b by each bus pattern of the input/output bus B2. At the same time, the connections and connections on the input/output board 2-1' are
It is connected to terminal P8 via turn B5-A1. This allows the slots A and B on the backboard 13 to be
For example, the control board and the input/output board mounted correspondingly are connected to each other via the input/output bus B2 and the expansion pattern B3-A.
=AI)-PB' 8b 8c. Similarly, the inter-board connection bin 2a is 1.
? b-Q2- (B3-A2)-P7 7 b 7
In the route of c, also via for connection between boards 3a is 3b
-PB ('B3-A3)-P6-6b-6c are connected respectively, so the first control board corresponding to slot) A and the input/output board 2-1 corresponding to slot B
' is electrically connected. After this, by adding functions, input/output board 2-1a' compatible with system slots) C and D
When each is mounted, as in the case of mounting to slot B, the input/output/J turn B2 on the backboard 13 and the expansion/output turn B3-A on the input/output board 2-Ja' are connected. They are connected to the control board corresponding to slot A, respectively. In other words, inter-board connection pin 1 corresponding to slot A that connects to the control signal line of the first control board
a to 3a are slots) B, C.

Each board-to-board connection pin 1b to 3b corresponds to D.

It is connected to lc to 3c and ld to 3d to achieve mass expansion. In this way, bus expansion between the control board and the plurality of input/output boards of group (1) controlled by the control board can be easily realized without using connection means using separate parts such as connectors.

In addition, there is a second control board mounted corresponding to slot E, and a slot F- which is controlled by the second control board.
The mounting glue 'fl' for H7j is the connection with the input/output board 2-2a' that constitutes the electrically insulated group (■).
In other words, it is clear that the bus expansion can be carried out in the same way as the example of the bus expansion of the board mounted to correspond to the slots A to D described in this section. In other words, the control board corresponding to slot E and each input/output board 2-2a' corresponding to slot F-H correspond to the pattern of input/output /J bus B2 and expansion path B3/ on the backboard 13, and each input/output board 2-2a' corresponds to slot F-H. Two extended patterns B3- B1 + B3- connecting terminals Q4 and Qzo and Q5 and Q9 on the board 2-2a'
By passing through B2, the inter-board connection pins 40 to 5e corresponding to slot E are connected to the respective inter-board connection pins 4f to 51° 4g to 5g and 4h to 5h corresponding to slots F to H, and the Nox expansion is performed. It can be achieved.

(Effects of the Invention) As described in detail above, according to the present invention, the inter-board connection bins on the board are used, and the internal bus for signal exchange between the central processing unit and the control board is connected to each other. , an input/output bus for signal transfer between the control board and the input/output board, and an expansion bus for bus expansion. The required number of expansion patterns are formed to connect the inter-board connection pins that form the board.This allows for easy system expansion, in other words, bus expansion, and also allows connections using separate parts such as connectors. Since the configuration does not involve the following, it is possible to improve reliability, and furthermore, it is possible to provide a path expansion method that has excellent advantages in terms of economy, implementation, etc.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an example of the configuration of a system to which the present invention is applied, and Figs. 2 to 4 are backings of the system shown in Fig. 1.
FIG. 5 is a diagram illustrating an example of the bus expansion method according to the present invention. CPU is a central processing unit, l-1 to no. 3 are control boards, 2-1 a to 2-1 c, 2-2 a to 2-
2c + 2-Ja, 2-1a', 2-2a'
is the input/output board, 3.13 is the backboard, 4 is the connector for the glint board, 5 is the connector for expansion, B1 is the internal path, B2 is the input/output path, B-3 is the expansion path, Ba-A
lB5 B is an extension or turn. Patent applicant Oki Electric Industry Co., Ltd. Figure 2 Figure 3 Figure 4 Figure 5 Procedural amendment (voluntary) 59, 4. , 16 Showa, Month, Day, Commissioner of the Patent Office, 1. Indication of the case, 1982 Patent Application No. 244828, 2. Invention name path expansion method 3, Relationship with the amended person case. Patent applicant office (105 ) 1-7-12 Toranomon, Minato-ku, Tokyo
No. 4 Agent address (105) 1-7-12 Toranomon, Minato-ku, Tokyo
No.""110'""! ' ρ 6. Contents of amendment (1) On page 6, line 13 of the specification, "5b, ~IJ~5j
," is corrected to "5b, ~+7j~5JI." (2) “Expansion Connector” on page 7, line 20 of the same book.
The text has been corrected to "expansion connector."

Claims (1)

[Claims] A back board is used to interconnect the boards by connecting the boards to each other by bus-wiring the board-to-board connection bins to form an internal path and an input/output bus,
A system configuration in which a plurality of basic configurations of a control board and one or more input/output boards controlled by the control board are mounted on the pack date, and they are mounted insulated from each other. When the pack is on the negative board, the connection bins between boards in adjacent slots are connected to each other to form an expansion path, and on the input/output board, the terminals corresponding to the control signal lines of the control board and the back board are connected to each other. An expansion pattern is formed to connect the expansion bus wiring formed on the board with the corresponding terminal.When adding functions to the system, the input/output board is mounted on one board according to the added function. A path extension method characterized by the slotting of.