JP2687776B2 - Package identification number setting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to a digital signal processing apparatus composed of a plurality of packages, and more particularly to a package identification method for transmitting / receiving control information between a plurality of packages.

[0002]

2. Description of the Related Art When constructing a digital signal processing device, it is common practice to mount a large number of identical packages (hereinafter referred to as individual packages) and control each individual package from another common package.

At this time, if the control signals are individually connected from the common package to the individual packages, it is possible to control each package. However, this method is generally used because the number of control signals in the common package increases. Absent.

FIG. 3 shows a conventional example. Here, 105 is a common package, and 121-124 are individual packages. The number of individual packages is m. The common package and the individual packages are connected by a common bus signal 201, and control information is transmitted and received.

Since the common bus signals are commonly connected to the individual packages, a package selection signal 220 indicating which individual package is control information is connected between the common package and each individual package. The number of package selection signals 220 is m. Individual package 12
When controlling to 1, the package selection signal 221 is set to logic 1 and the control information addressed to the individual package 121 is set to the common bus signal 201. The individual package 121 receives the control information of the common bus signal 201 when its package selection signal 221 is logic 1.

Also in this case, when the number of individual packages reaches several tens, the number of package selection signals 220 in the common package also reaches several tens.

FIG. 4 shows another conventional embodiment. 106 is a common package, and 131-134 are individual packages. Similar to the case of FIG. 3, the common package and the individual packages are connected by the common bus signal 201.

The difference from FIG. 3 is that in FIG. 4, there is no package selection signal 220, and instead, the identification number setting signals 231 to 234 are connected to each individual package. The number of this signal is p, and if p = 6, 64 individual packages can be identified.

The identification number setting signals 231 to 234 are binary numbers 0 to m corresponding to the mounting positions of the individual packages.
The logic up to -1 is fixedly set. Setting circuit 1
Reference numerals 41 to 144 are actually circuits for fixedly connecting p signal lines of the identification number setting signal to logic 0 or logic 1.

Control information including a package identification number is sent to the control signal set from the common package 106 to the individual packages 131 to 134 through the common bus signal 201. Each individual package monitors the control information of the common bus signal 201 and receives the control information when the package identification number included in the control information matches the identification number setting signal.

In this case, unlike FIG. 3, the signal in the common package is only the common bus 201, and the package selection signal 220 as in the example of FIG. 3 is unnecessary, but the package identification number setting signal 231 is provided for each individual package. ~ 2
34 is required. These signals are fixedly set signals, and the information amount of the signals is small. In addition, when a large number of individual packages are mounted, a plurality of p is required.

[0012]

As described above,
When many individual packages are mounted and controlled, it is necessary for each individual package to be able to identify whether or not the control information from the common package is the control signal for itself, but the conventional method requires many signals in the common package. Either it was required or multiple signals were required in separate packages. Depending on the device, there is a limit to the number of control signals between packages, and a method that can identify a large number of individual packages with fewer control signals was expected.

An object of the present invention is to provide a package identification number setting method in which the number of signal lines for setting the package identification number is small.

[0014]

According to a first aspect of the present invention, there is provided a common package and a plurality of individual packages, a common package having a control circuit, and a plurality of connecting the control circuit and the individual packages. Is a package identification number setting method in a device that transmits and receives control information through a common bus signal of the above, wherein the common package receives a second common bus signal and a setting control signal output from the control circuit. Each individual package has a first gate circuit that outputs a bus signal and a second gate circuit that inputs the first common bus signal and the setting control signal and outputs a third common bus signal. Instead of the common bus signal of, input either the second common bus signal or the third common bus signal for each of the signal lines forming the common bus signal, and further input the setting control signal. The configuration is such that different signals are set for the second common bus signal and the third common bus signal by the setting control signal, the first gate circuit and the second gate circuit, and different identification numbers are set for each individual package. It is characterized by

[0015]

FIG. 1 shows an embodiment of the present invention.

Reference numeral 101 is a common package, and 102 is a control circuit therein. A first gate circuit 103 receives the first common bus signal 201 output from the control circuit 102 and the identification number setting control signal 204 also output from the control circuit 102, and outputs the second common bus signal. 202 is output. The signal 201 and the signal 202 are composed of n individual signal lines. When the identification number setting control signal 204 is logic 0, the second common bus signal 202 outputs the first common bus signal 201 as it is. When the identification number setting control signal 204 is logic 1, the second common bus signal 20
A logic 1 is output to all 2 signal lines.

Reference numeral 104 denotes a second gate circuit, which has a first common bus signal 201 output from the control circuit 102,
Similarly, the identification number setting control signal 204 output from the control circuit 102 is input, and the third common bus signal 203 is output. The signal 203 is composed of n individual signal lines. When the identification number setting control signal 204 is logic 0, the third common bus signal 203 outputs the first common bus signal 201 as it is. When the identification number setting control signal 204 is logic 1, logic 0 is applied to all the signal lines of the third common bus signal 203.
Is output.

111 to 114 are individual packages,
Common buses 202, 203 output from the common package,
The identification number setting control signal 204 is connected to each individual package.

In this case, each individual package 111-11
The common bus signals 211 to 214 to be connected to No. 4 regularly select and connect either the first common bus signal 202 or the second common bus signal 203 for each signal line. This is shown in FIG.

FIG. 2 shows a case where the number n of signal lines for the common bus signals 202 and 203 is six.

All the common bus signals 211 connected to the individual packages 111 are connected from the third common bus signal 203. Common bus signal 2 connected to individual package 112
Numeral 12 designates the signal line of the least significant bit as the second common bus signal 2
02, and the remaining signal line is the third common bus signal 2
Connect from 03.

That is, the numerical value of each signal line is considered to be a binary number with a logic 1 when connected from the second common bus signal 202 and a logic 0 when connected from the third common bus signal 203. Connect to show the package identification number.

Considering in this way, the individual package 111
Connections of common bus signals 211 to 214 connected to ~ 114 indicate package identification numbers 0, 1, 62 and 63, respectively. 6 if the number n of common bus signals is n = 6
Four individual packages can be identified.

Control circuit 102 of common package 101
Normally operates with the identification number setting control signal 204 set to logic 0. In this case, the second common bus signal 202,
Both the third common bus signal 203 and the first common bus signal 20
1 is the same signal, and each individual package 111-114
Whichever of the common bus signals 202 and 203 is connected to the common bus signals 211 to 214, the same signal is represented.

When the package identification number is set in the individual package, the control circuit 102 sets the identification number setting control signal 204 to logic 1. In this case, the first gate circuit 1
All signal lines of the second common bus signal 202 are set to logic 1 by 03, and all signal lines of the third common bus signal 203 are set to logic 0 by the second gate circuit 104. As a result, in the common bus signals 211 to 214 of the individual packages 111 to 114, the respective signal lines are connected to the common bus signal 20.
The package identification number is shown depending on which one is connected from 2, 203. When the input identification number setting control signal 204 is logic 1, each individual package holds the signal appearing in the common bus signals 211 to 214 as a package identification number in the package.

With the above method, different package numbers can be set for the same type of individual packages depending on the mounting positions.

[0027]

According to the package identification number setting method of the present invention, the identification number setting control signal 1 is provided to each individual package as a signal line for setting a different package number for the same type of individual package depending on the mounting position.
All you have to do is add a book. Further, the common package requires two common bus signals n lines and an identification number setting control signal, and it is necessary to add n + 1 lines. However, when connecting each individual package with a common bus signal, it is difficult to connect all packages with one system because of the load of the bus signal, and it is normally originally connected with a plurality of systems. In this case, if the connection method of the common buses of the plurality of systems is changed to this method, it suffices to add only one identification number setting control signal.

According to the method of the present invention, the number of signal lines for setting the package identification number may be small, and it is effective when it is difficult to increase the number of signal lines.

[Brief description of the drawings]

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

FIG. 2 is a diagram showing connection details of signals 211 to 214 in FIG.

FIG. 3 is a diagram showing a conventional example.

FIG. 4 is a diagram showing another conventional example.

[Explanation of symbols]

 101 common package 102 control circuit 103 first gate circuit 104 second gate circuit 105 common package 106 common package 111-114 individual packages 1-n 121-124 individual packages 1-n 131-134 individual packages 1-n 141- 144 identification number setting circuits 1 to n 201 first common bus signal 202 second common bus signal 203 third common bus signal 204 identification number setting control signal 211 to 214 common bus signal 1 to n 220 package selection signal 221 to 224 Package selection signals 1-n 231-234 Identification number setting signals 1-n

Claims (1)

(57) [Claims] 1. A common package and a plurality of individual packages, wherein a control circuit is provided in the common package, and control information is transmitted through a plurality of first common bus signals connecting the control circuit and each individual package. A package identification number setting method in a device for transmitting and receiving, wherein the common package receives a first common bus signal and a setting control signal output from the control circuit, and outputs a second common bus signal. It has a gate circuit and a second gate circuit that inputs the first common bus signal and the setting control signal and outputs the third common bus signal, and each individual package is common instead of the first common bus signal. For each of the signal lines that make up the bus signal, either the second common bus signal or the third common bus signal is input, and the setting control signal is input. A package in which different signals are set for the second common bus signal and the third common bus signal by the control signal, the first gate circuit, and the second gate circuit, and different identification numbers are set for each individual package. Identification number setting method.