JPH0723990Y2 - Printed circuit board mounting structure of I / O processor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Overview] Regarding a printed circuit board mounting structure of an input / output processing device that is connected to various types of peripheral devices in a computer system to perform signal processing and control of the peripheral devices, various types of peripheral devices are available. For the purpose of providing a printed circuit board mounting structure of an input / output processing device that can easily cope with the above, one of the motherboards is used as the mounting surface of the input / output daughter board in which only the input / output section is circuit-configured. The other surface is a mounting surface of the processing daughter board for driving the input / output unit, and the processing daughter board and the input / output daughter board are connected to each other through a group of pin terminals implanted on the motherboard.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board mounting structure of an input / output processing device that is connected to various types of peripheral devices in a computer system to perform signal processing and control of the peripheral devices.

In recent years, with the increase in size and versatility of computer systems, the number and types of peripheral devices connected to input / output processing devices have also increased,
Flexibility is also required for the interface with peripheral devices.

[Prior Art] Generally, an input / output processing device (transfer device) in a computer system is an input / output unit for connecting to a peripheral device and a channel control device for selecting and activating a channel device incorporated in the input / output unit. In the past, the input / output unit and the processing unit are composed of a single daughter board 8
As shown in FIG. 4 mounted on the upper side, the connector 80 was mounted by plug-in connection with the pin terminal group 4 implanted in the mother board 1.

[Problems to be Solved by the Invention] However, the daughter board 8 in the above-mentioned conventional example is configured such that an input / output unit and a processing unit are provided on a substrate in 1 in correspondence with predetermined peripheral devices, and are substantially connected. Since there is a one-to-one correspondence with the peripheral devices that should be used, many types of boards must be designed and managed by combining the peripheral devices, etc., which is a waste of design man-hours and inventory management. Was.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a printed board mounting structure of an input / output processing device that can easily cope with a variety of peripheral devices.

[Means for Solving the Problems] According to the present invention, the above-mentioned object is to use one of the surfaces of the motherboard as a mounting surface for an input / output daughter board in which only the input / output section is circuit-configured, and A printing board for an input / output processing device, characterized in that it is used as a mounting surface of a processing daughter board for driving an input / output section, and the processing daughter board and the input / output daughter board are connected through a group of pin terminals implanted on the mother board. This is accomplished by providing a board mounting structure.

[Action]

The processing unit B in the input / output processing device is mainly composed of a channel control device for transmitting / receiving control signals or data to / from the logic device and the main storage device and transmitting / receiving data to / from the channel device of the input / output unit A described later. However, the specific configuration is uniquely determined by the specifications of the computer system, and there is very little change in the configuration due to the difference in peripheral devices to be connected.

On the other hand, the input / output unit A, for example, changes the connector shape according to the difference in the connector shape of the connected peripheral device or the difference in the data transfer rate, or selects the selector channel as the channel device. It is very susceptible to differences in peripheral devices, such as the need to appropriately select and employ multiplexer channels.

The present invention has been made in view of such a fact, and is a processing unit B which is considered to be a common unit in the input / output device.
By mounting the processing daughter board 3 on which one is mounted on one side of the mother board, and mounting the input / output daughter board 2 consisting of only the input / output section A containing many variable elements due to peripheral devices on the other side, It is intended to deal with the change of the device by changing only the input / output unit A.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a mother board, and a plurality of pin terminal groups 4, 4, ...
-Is attached so that it projects on both sides.

The input / output device according to this embodiment is configured with an input / output daughter board 2 and a processing daughter board 3 facing each other via a mother board 1 as one unit, and the processing daughter board 3 has the above-mentioned pin terminal group of the mother board 1. 4, a mother board side connector 30 to be plugged in and an element 31 mainly constituting a channel control device are mounted.

On the other hand, on the input / output daughter board 2, in order to correspond to the signal of the processing daughter board 3, for example, the contact is arranged on the processing daughter board 3 so as to be inverted from that on the motherboard side contact 30, and the interface cable of the peripheral device. An external interface connector 20 for connecting 9 and an element 31 forming a plurality of channels for driving a specified peripheral device selected by a signal from a channel control device of the processing daughter board 3 are mounted, and these input / output daughter boards 2 and the processing daughter board 3
The pin terminals 4 of the mother board 1 are mounted on both sides of the mother board 1 in a shared manner.

The input / output processing device is a unit of the input / output processing device configured as described above, in which only the input / output daughter board 2 is mounted on one side of the motherboard 1 and only the processing daughter board 3 is mounted on the other side, that is, , One surface of the mother board 1 is used as a mounting surface for the input / output daughter board 2 and the other surface is used as a mounting surface for the processing daughter board 3, and a plurality of units are arranged side by side in a direction perpendicular to the plane of the drawing. An electromagnetic shield is provided by the front shield structure 21 including the external interface connectors 20 of the daughter boards 2, 2 ,.

Therefore, according to this embodiment, the input / output daughter board 2 is compatible with a wide variety of peripheral devices.
You only need to prepare the new one, which saves you the trouble of new design and can deal with the change of the peripheral device by changing only the I / O daughter board 2. Can be improved.

FIG. 2 shows another embodiment of the present invention in which the input / output daughter board 2 has four sub-print boards for each peripheral device.
It is divided into 2a, 2b, 2c and 2d. In this way, by dividing the input / output daughter board 2 so as to correspond to the peripheral devices in a one-to-one correspondence, only the sub-printed boards 2a, 2b, 2c, 2d are changed when the peripheral devices are changed. It is possible to deal with, and there are a few types of sub-printed boards 2a,
Only by preparing 2b, 2c, and 2d, it is possible to support various types of peripheral devices. FIG. 3 shows still another embodiment of the present invention and shows a structure effective when the discrete wire 6 is wired.

That is, in this embodiment, the pin terminal groups 4, 4, ... In the case where the motherboard 1 is modified, interrupt processing is performed, or when it is necessary to connect the pin terminal groups 4 with the shortest wiring length to prevent signal delay. -Discrete wires 6 that are laid to make a connection between the
This is effective when there is a risk of contact with the motherboard side connector 30 of the daughter boards 2 and 3, and the discrete wires 6 are concentratedly wired with one of the motherboards 1 as the discrete wire wiring surface 5. The discrete wire 6 that is laid on the board is set to a plate-like spacer 7 that is set at a predetermined distance from the motherboard 1.
It is constituted by covering with. Therefore, in the pin terminal groups 4, 4, ..., The side opposite to the discrete wire wiring surface 5 projects by the length 11 required for plug-in with the motherboard side connector 30 of the daughter board. The 5 side protrudes by the sum of the length 11 and the length 12 including the wire wiring region and the thickness of the spacer 7, and the connector 30 on the motherboard side of the daughter board.
Also ensure the plugin with.

Therefore, according to this embodiment, after the discrete wires 6 are laid on the discrete wire laying surface 5 of the mother board 1, the spacers 7 are attached to prevent the discrete wires 6 from protruding. Then, similarly to the above-described embodiment, the mother board side connectors 30 of the input / output daughter board 2 and the processing daughter board 3 may be fitted to the respective pin terminal groups 4 so that necessary circuits are electrically connected.

As a result, it is possible to completely prevent abnormal contact between the discrete wire 6 and the daughter board, ensure the mating of the motherboard side connector 30 of the daughter board, and wire the discrete wire 6 Since only one side of the mother board 1 is used, troublesome work such as arranging the discrete wires 6 on the front and back surfaces of the mother board 1 via the through holes of the mother board 1 is not required, and wiring workability is improved. Can be improved.

[Effects of the Invention] As is apparent from the above description, according to the printed board mounting structure of the input / output processing device according to the present invention, the input / output part and the processing part of the input / output processing device are configured on different daughter boards. Therefore, it is possible to support various peripheral devices by only supporting the input / output daughter board, and it is possible to improve the degree of freedom of the system.

Further, since the input / output daughter boards are centrally arranged on one surface of the motherboard, it is possible to easily deal with changes after mounting.

In addition, since there are many terminals that are common to both the input / output daughter board and the processing daughter board that are not connected to the processing daughter board and are mounted on both sides via the motherboard, the pin terminal group of the motherboard is effective. Can be shared, and the mounting efficiency of the daughter board can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing another embodiment of the present invention, and FIG. 3 is a diagram showing still another embodiment of the present invention. Is an overall view thereof, FIG. 3 (b) is an enlarged view of a main part thereof, and FIG. 4 is a view showing a conventional example. In FIG. 1, 1 ... Motherhood, 2 ... Daughter board for input, 3 ...
... processing daughter board, 4 ... pin terminal group, A ... input / output section.

Front page continued (72) Inventor Yoshinori Unzuka 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor Takayoshi Inoue 1015, Kamedotachu, Nakahara-ku, Kawasaki City, Kanagawa Prefecture (72) Inventor Yoshinobu Maeno 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited

Claims (2)

[Scope of utility model registration request] 1. A mother board (1) is used as a mounting surface for an input / output daughter board (2) in which only the input / output section (A) is circuit-configured, and the other surface is the input / output section (A). As a mounting surface of a processing daughter board (3) for driving the device, the processing daughter board (3) and the input / output daughter board (2) are connected via a pin terminal group (4) implanted in the motherboard (1). The printed circuit board mounting structure of the input / output processing device characterized by the above. 2. A discrete wire (6) for connecting between the pin terminal groups (4, 4 ...) Is concentratedly wired with any one of the mounting surfaces as a discrete wire wiring surface (5),
The discrete wire (6) is attached to a plate-shaped spacer (7).
The printed board mounting structure of the input / output processing device according to claim 1, wherein the printed board mounting structure is detachably covered with.