JP2008171360A - Board for mounting logical module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a board for mounting logical modules allowing logical signals output from the respective logical modules to be input and output without colliding with one another. <P>SOLUTION: The board for mounting the logical modules comprises a master connector group connectable to the logical module 300, and a plurality of slave connector groups connectable to the plurality of logical modules 200 respectively. Connection between the respective master connectors 150, 151, 152, 153 of the master connector group and slave connectors 110, 120, 130, 140 of the respective slave connector groups is made respectively by the same pin number, and connection between the corresponding slave connectors other than the slave connectors 110, 120, 130, 140 of the respective slave connector groups is made by the different pin numbers. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a logic module mounting board for mounting a logic module for hardware emulation that develops logic to be verified on a plurality of programmable logic elements and verifies the logic of a large scale integrated circuit. is there.

  In recent years, large-scale integrated circuits (LSIs) applied to information processing apparatuses such as servers and networks have been increased in scale, multi-pins, and downsized. In designing such logic elements such as LSI, in order to improve the logic verification accuracy of LSI, in addition to the conventional software emulation technology, FPGA (Field Programmable Gate Array) which is a programmable logic element was used. A method of applying hardware emulation to LSI logic verification is used. However, with the recent increase in the gate scale of LSI internal circuits, a large number of FPGAs are required for logic verification.

  In order to combine a plurality of FPGAs as the gate scale increases, a plurality of logic modules equipped with a plurality of FPGAs are prepared, logically divided into a plurality of logic modules, and these are connectors for external connection of the logic modules. It was necessary to construct a hardware emulation device by connecting in multiple stages via a PC and connect it to the system board subject to logic verification.

This type of verification logic module is described in Patent Document 1, for example. In the conventional method, a plurality of logic modules are connected in multiple stages via external connection connectors of the logic modules, and the logic modules are stacked in the upper or lower stage to cope with an increase in the gate scale.
JP 2001-318124 A

  In the case of a system in which a plurality of logic modules are stacked up and down as in the past, the logic modules need to be further stacked up and down in order to cope with further increase in the gate scale, and the entire apparatus becomes a vertical type. This makes the installation unstable. Therefore, it is conceivable to arrange a plurality of logic modules in a plane and stop the stacking of the logic modules from top to bottom, or to reduce the number of stacked stages. However, if a plurality of logic modules are arranged in a plane, the plurality of logic modules arranged in a plane must be connected to each other. When these logic modules are simply connected by a connector, there is a problem that a logic signal output from each logic module collides and inconvenience occurs in input / output.

  Accordingly, it is an object of the present invention to provide a logic module mounting board that can input / output logic signals output from each logic module without collision.

  The object includes a master connector group connectable to the first logic module and a plurality of slave connector groups connectable to the plurality of second logic modules, respectively, and each master connector of the master connector group and each of the master connector groups A board for mounting a logic module in which a predetermined slave connector of a slave connector group is connected with the same pin number, and corresponding slave connectors other than the predetermined slave connector of each slave connector group are connected with different pin numbers Is achieved.

  Here, the slave connectors connected by the different pin numbers can be in the same position in each of the slave connector groups. In addition, a common power supply source capable of supplying power to the plurality of second logic modules can be provided. Furthermore, a common clock supply source capable of supplying a clock signal to the plurality of second logic modules can be provided.

  According to the present invention, it is possible to obtain a logic module mounting board capable of inputting / outputting logic signals output from each logic module without collision. In the present invention, logic modules can be mounted in multiple stages on both sides of the board, and the logic pin hardware emulation device can be connected with different pin numbers by crossing connection pin numbers between slave connectors for mounting logic modules. It is possible to realize a crossbar connection that enables input / output without collision of logic signals with respect to a logic module having a repeat logic configuration in FIG. Further, the power supply and the clock signal can be supplied equally to the respective logic modules mounted at that time.

  FIG. 1 is a diagram showing an embodiment of a logic module mounting board according to the present invention. As illustrated, the logic module mounting board 100 includes a master connector group having master connectors 150, 151, 152, and 153 connected to the logic module 300 on one side (lower surface) of the board 100, and the other side of the board 100. The slave connector group having slave connectors 110, 111, 112, and 113 connected to the logic module 200 on the surface (upper surface), and the slave having slave connectors 120, 121, 122, and 123 that can be connected to logic modules (not shown). A connector group, a slave connector group having slave connectors 130, 131, 132, and 133, and a slave connector group having slave connectors 140, 141, 142, and 143 are provided. The logic module 300 is arranged on the system board 400. The logic module 200 is equipped with an FPGA 250. Other logic modules such as the logic module 300 are similarly equipped with FPGAs.

  FIG. 2 is a diagram illustrating an example of a connection relationship between the master connector and the slave connector. As illustrated, the master connector 150 is connected to the slave connector 110, the master connector 151 is connected to the slave connector 120, the master connector 152 is connected to the slave connector 130, and the master connector 153 is connected to the slave connector 140. The master connectors 150, 151, 152, and 153 and the slave connectors 110, 120, 130, and 140 are connected with the same pin numbers as described later. On the other hand, the slave connector 111 is connected to the slave connector 121, the slave connector 112 is connected to the slave connector 132, the slave connector 113 is connected to the slave connector 143, the slave connector 122 is connected to the slave connector 142, and the slave connector 123 is The slave connector 133 is connected, and the slave connector 131 is connected to the slave connector 141. That is, this connection is made between slave connectors at the same position in each slave connector group. The slave connectors are connected with different pin numbers as will be described later. In other words, these slave connectors are connected with crossing pin numbers.

  With the logic module mounting board 100 configured as described above, the logic signal generated from the system board 400 is propagated to the master connectors 150, 151, 152, and 153 via the external connection type logic module 300. The logic signal propagated to the master connector 150 is propagated to the slave connector 110 connected with the same pin number, and the external connection type logic module 200 mounted on the slave connectors 110, 111, 112, 113 is connected to the master connector 150. The logic signal is received as it is, and cooperative operation is possible. At this time, the master connectors 151, 152, and 153 are unused in the logic verification program, and the logic signal is not propagated to the slave connector in which the external connection type logic module is not mounted. Similarly to the above, the slave connectors 111, 112, and 113 in which the external connection type logic module is mounted are treated as unused in the logic verification program. Similarly, when the external connection type logic module 200 is mounted on the slave connectors 120, 121, 122, 123, the slave connectors 130, 131, 132, 133, and the slave connectors 140, 141, 142, 143, respectively. Cooperative operation is possible.

  FIG. 3 is a diagram illustrating an example of a slave connector arrangement surface of the logic module mounting board. As shown in the figure, slave connector groups 115, 125, 135, and 145 are arranged on the slave connector arrangement surface of the logic module mounting board 100. The slave connector group 115 includes slave connectors 110, 111, 112, and 113, the slave connector group 125 includes slave connectors 120, 121, 122, and 123, and the slave connector group 135 includes slave connectors 130, 131, 132, and 133. The slave connector group 145 includes slave connectors 140, 141, 142, and 143. Here, the connection relationship between each slave connector and the corresponding slave connector and the connection relationship with the master connector are as described in the description of FIG. The wiring for connecting each slave connector is indicated by a dotted line in FIG. Each wiring is formed inside the board 100 in this example, but can also be formed on the upper surface or the lower surface of the board.

  FIG. 4 is a diagram illustrating an example of a master connector arrangement surface of the logic module mounting board. As shown in the figure, a master connector group 155 is arranged on the master connector arrangement surface of the logic module mounting board 100. The master connector group 155 includes master connectors 150, 151, 152, and 153. Master connectors 150, 151, 152, and 153 are connected to slave connectors 110, 120, 130, and 140 with the same pin numbers as described above.

  Further, a common power supply source capable of supplying power to a plurality of mounted logic modules is arranged on the master connector arrangement surface of the logic module mounting board 100. In FIG. 4, the power supplied from the external power supply connector 160 as the power supply source is supplied through power supply circuits 161, 162, 163, and 164 and slave connector groups 115, 125, 135, and 145 connected thereto, respectively. Supplied to the corresponding logic module. This makes it possible to supply equally stable power to each logic module.

  Further, a common clock supply source capable of supplying clock signals to a plurality of mounted logic modules is arranged on the master connector arrangement surface of the logic module mounting board 100. In FIG. 4, a clock signal amplifying device 170 as a clock supply source is a device that amplifies one clock signal supplied from the master connector 153. The output of the clock signal amplifying apparatus 170 can reach each of the slave connectors 110, 120, 130, and 140 at the same time. As a result, each slave connector 110, 120, 130, 140 can have a common clock signal, and the same clock signal can be externally connected with the same delay time even when a multi-stage external connection type logic module having a repeat logic configuration is mounted. It can be supplied to the system logic module.

  FIG. 5 is a diagram illustrating an example of pin number connection between the master connector and the slave connector. As shown in the figure, each of the master connector and the slave connector has a plurality of pin numbers 1 to 80, and signal numbers S1 to S80 are assigned to the respective pin numbers. The master connector is connected to the slave connector with the same pin number. That is, pin number 1 and signal number S1 of the master connector are connected to pin number 1 and signal number S1 of the corresponding slave connector, and both are connected in the same manner, and finally, pin number 80 and signal number S80 of the master connector are connected. Is connected to pin number 80 and signal number S80 of the slave connector. By connecting both to the same pin number, the master connectors 150, 151, 152, and 153 and the slave connectors 110, 120, 130, and 140 can operate in a coordinated manner.

  FIG. 6 is a diagram illustrating an example of pin number connection between slave connectors. In this example, the slave connector (I) and the slave connector (II) at the same position in each slave connector group are connected, and the connection pin numbers are changed at that time. As shown in the figure, the slave connector (I) has a plurality of pin numbers 1 to 80, and signal numbers S1 to S80 are assigned to the respective pin numbers. On the other hand, the slave connector (II) has a plurality of pin numbers 1 to 80, and signal numbers S41 to S80 are assigned corresponding to the pin numbers 1 to 40, respectively, and signals corresponding to the pin numbers 41 to 80, respectively. Numbers S1 to S40 are assigned. Thus, the slave connector (I) and the slave connector (II) are connected with different pin numbers. Here, between the slave connector (I) and the slave connector (II), as shown in FIG. 2, between the slave connectors 111 and 121, between the slave connectors 112 and 132, between the slave connectors 113 and 143, and between the slave connector 122 and 142, between slave connectors 123 and 133, and between slave connectors 131 and 141.

  Between these slave connectors, as shown in FIG. 6, the pin number 1 and signal number S1 of the slave connector (I) are connected to the pin number 41 and signal number S1 of the slave connector (II). The pin number 40 and signal number S40 of the slave connector (I) are connected to the pin number 1 and signal number S41 of the slave connector (II). Similarly, the connection between the slave connectors (I) and (II) is performed in a crossing manner. Finally, the pin number 80 of the slave connector (I) and the signal number S80 are the pin number 40 and the signal number of the slave connector (II). Connected to S80. That is, all the connections between the slave connectors other than the connection between the master connector and the slave connector not marked with a circle in the “intersection” column shown in FIG. 2 cross the pin numbers and connect them with different pin numbers. As a result, input / output of the slave connector can be realized without collision of logic signals. Otherwise, a collision of logic signals occurs and the slave connector input / output cannot be realized. Here, the collision of logic signals means that, for example, the slave connector (I) pin number 1 and signal number S1 shown in FIG. 6 overlap with the slave connector (II) pin number 1 and signal number S1. When the same pin numbers of the slave connectors (I) and (II) are connected to each other and the same logic signal is given, the respective logic modules move in the same manner. If you want to make each logic module move differently, connect the same pin numbers, for example, for the same pin number 1, contradictory logic signals (different input / output directions, different Hi / Low), There are cases that need to be given at the same time. In order to avoid this, the connection between the slave connectors crosses the pin numbers and connects them with different pin numbers.

  FIG. 7 is a diagram showing an example in which logic modules are mounted in multiple stages on the logic module mounting board according to the present invention. In this example, as shown in the figure, a plurality of logic modules are mounted on the logic module mounting board 100 in four places at three stages and the lower one stage, and the system board 400 is further connected. The external connection type logic module 300 is connected to the system board 400, the logic module mounting board 100 is arranged on the upper stage, and the multistage connection type external connection type logic modules 800, 900, 1000 and 1100 are mounted thereon. .

  In this configuration, logic signals generated from the system board 400 are propagated from the master connectors 150, 151, 152, and 153 to the logic module mounting board 100 via the external connection type logic module 300. The logic signal propagated to the logic module mounting board 100 is propagated to the slave connectors 110, 120, 130, 140 to which the same pin numbers as the master connectors 150, 151, 152, 153 are respectively connected. The logic signals propagated to the slave connectors 110, 120, 130, 140 are transmitted into the external connection type logic modules 800, 900, 1000, 1100 connected in multiple stages. At this time, the logic signals transmitted to the multi-stage external connection type logic modules 800, 900, 1000, 1100 are the slave connectors 111 and 121, 112 and 132, 113 and 143, 122 and 142, 123 and 133, 131 and 141, respectively. Are crossed and propagated according to the pin number arrangement shown in FIG. As a result, the crossbar connection can be realized without the input / output signals of the slave connectors colliding with each other.

  Thus, even if the same repeat logic is mounted on the multi-stage external connection logic modules 800, 900, 1000, 1100, the logic signal between the multi-stage external connection logic modules passes through the logic module mounting board. By doing so, it is possible to construct a hardware emulation device for logic verification without colliding. At this time, multi-stage external connection system logic modules 800, 900, 1000, 1100 and slave connectors 110, 111, 112, 113, 120, 121, 122, 123, 130, 131, 132, 133, 140, 141 142, 143 and the master connector 150, 151, 152, 153 are managed by the logic verification program.

  As described above, it is possible to provide a hardware emulation device in which a master connector and a slave connector are connected to both sides of a board, and logic modules mounted on the master connector and the slave connector operate in cooperation. Further, it is possible to provide a hardware emulation device for logic verification that enables input / output without collision of signals even when two or more master modules and two or more slave connectors are equipped with a plurality of logic modules having a repeat logic configuration. it can.

  The present invention relates to a logic module mounting board for mounting a logic module for hardware emulation that develops logic to be verified on a plurality of programmable logic elements and verifies the logic of a large scale integrated circuit. There is industrial applicability.

It is a figure which shows one Example of the board for logic module mounting concerning this invention. It is a figure which shows an example of the connection relation of a master connector and a slave connector. It is a figure which shows an example of the slave connector arrangement | positioning surface of a logic module mounting board. It is a figure which shows an example of the master connector arrangement | positioning surface of a logic module mounting board. It is a figure which shows the pin number connection example between a master connector and a slave connector. It is a figure which shows the pin number connection example between slave connectors. It is a figure which shows the example which mounted the logic module in multistage on the board for logic module mounting concerning this invention.

Explanation of symbols

100: logic module mounting boards 110, 111, 112, 113, 120, 121, 122, 123, 130, 131, 132, 133, 140, 141, 142, 143 ... slave connectors 115, 125, 135 145 ... Slave connector group 150, 151, 152, 153 ... Master connector 155 ... Master connector group 160 ... External power supply connectors 161, 162, 163, 164 ... Power supply circuit 170 ... Clock amplifier 200, 300 ... External connection type logic module 250 ... FPGA
400: System board 800, 900, 1000, 1100: Multistage external connection type logic module

Claims (4)

  A master connector group connectable to the first logic module, and a plurality of slave connector groups connectable to the plurality of second logic modules, respectively, each master connector of the master connector group and each slave connector group For mounting a logic module, wherein a predetermined slave connector is connected with the same pin number, and corresponding slave connectors other than the predetermined slave connector of each slave connector group are connected with different pin numbers. board.   2. The logic module mounting board according to claim 1, wherein the slave connectors connected by the different pin numbers are in the same position in each of the slave connector groups.   The logic module mounting board according to claim 1, wherein a common power supply source capable of supplying power to the plurality of second logic modules is provided.   4. The logic module mounting board according to claim 1, wherein a common clock supply source capable of supplying a clock signal to the plurality of second logic modules is provided.

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