JPH04352292A - Interface device - Google Patents

Abstract

PURPOSE:To input an optional number of data packets which have data value information consisting of an optional number of words to a data packet processor at optional intervals of time. CONSTITUTION:The device is constituted by providing an input quantity storage means 31 for input data packets and input interval information to an input control means for data packets to the data packet processor and also providing an event quantity storage means 91 storing the total number of words of information stored in an output storage means 8 and an effective event quantity storage means 92 stored with the total number of words of data packets and output interval information as effective information as to the information stored in the output storage means to an output control means 9 which controls output to an external data processor.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention provides an interface that performs input/output between a data packet processing device that processes data packets containing tag information and data value information of an arbitrary number of words, and a data processing device that processes data. It is related to the device.

0002

2. Description of the Related Art In recent years, data packet processing devices such as data-driven computers that process tags and data packets have been developed. Data processing systems are being realized.

In order to operate such a system efficiently, it is important to configure an interface device for mutually converting the format of data transmitted between the data packet processing device and the external data processing device. One factor is that the present invention relates to the configuration of such an interface device.

Conventional interface devices include, for example, as described in Japanese Patent Laid-Open No. 64-21539.
An arbitrary number of data packets having an arbitrary number of words of data value information are generated based on information given from an external data processing device, and are continuously input to the data packet processing device, and an arbitrary number of data packets output from the data packet processing device An arbitrary number of data packets having data value information of the number of words are received, and the information held by all of these data packets is outputted to an external data processing device.

[0005]

[Problems to be Solved by the Invention] In the above-mentioned interface device, data packets are input to the data packet processing device continuously, or at intervals determined by the time required for communication with an external data processing device. You can only enter the information using the following commands: Further, when outputting the information of data packets output from the data packet processing device to an external data processing device, only the information held by each output data packet can be output.

On the other hand, in cases such as adjusting the hardware of a data packet processing device, there is a function to input multiple data packets at arbitrary time intervals, and an arbitrary number of data packets output from the data packet processing device. A function is required to notify an external data processing device of the interarrival time interval between each of the data packets. However, at present, the above-mentioned interface device does not have such a function.

[0007] The present invention has been made to solve such problems, and is directed to a data packet processing device that processes data packets holding data value information of an arbitrary number of words. A function that inputs data into a data packet processing device at arbitrary time intervals, receives an arbitrary number of data packets output from the data packet processing device, and outputs the information held by all of them to an external data processing device. At the same time, it provides an interface device that makes it possible to notify an external data processing device of the arrival time interval between each output data packet.

[0008]

[Means for Solving the Problems] The interface device of the present invention stores information for generating data packets to be input to a data packet processing device as well as input interval information that is information on input time intervals for each data packet. Input storage means, input control means for controlling the input of data packets to the data packet processing device, storing data packets output from the data packet processing device and output interval information that is information on arrival time intervals between each data packet. An output storage means, an output control means for controlling the output of the information held by the output data packet and the output interval information to an external data processing device are provided, and the input control means further includes the total number of words of the input data packet and the input interval information. An input number storage means for storing information is provided, and the output control means includes an event number storage means for storing the total number of words of information stored in the output storage means, and an input number storage means for storing the total number of words of information stored in the output storage means, and an input number storage means for storing information stored in the output storage means. A valid event number storage means is provided for storing the total number of words of a certain data packet and output interval information.

[0009]

[Operation] In the interface device of the present invention, first, information for generating an arbitrary number of input data packets given from an external data processing device and input interval information indicating the input time interval of the input data packets are It is stored in the input storage means. Next, from the external data processing device, data for an input request specifying whether or not to store the input data packet and input interval information, and the arrival time interval of the output data packet in the output storage means. is input. In response to the input of this data, the input control means stores information on the total number of input words in the input number storage means, generates an input data packet based on the information stored in the input storage means, and generates an input data packet based on the information stored in the input storage means. input to a data packet processing device at time intervals; At this time, the value of the input number storage means is updated according to the input of the input data packet to the data packet processing device and the input time interval, and when this reaches a specific value, the input is terminated. In this way, it is possible to input any number of data packets to the data packet processing device at any time interval.

Further, output data packets from the data packet processing device and output interval information indicating the arrival time interval between each output data packet are stored in the output storage means. At this time, the output control means updates the value of the event number storage means according to each piece of information stored in the output storage means, and further updates the value of the event number storage means to the number of valid events each time the end of the output data packet is stored. By storing it in the storage means, the total number of words of the output data packet and the output interval information, which are valid information among the information stored in the output storage means, is stored. The value of the valid event count storage means is output to the external data processing device in response to a request from the external data processing device. Thereby, the external data processing device knows the information of the output data packet to be received and the total number of words of the output interval information. Subsequently, information on the output data packet and output interval information are output to the external data processing device in response to an output request from the external data processing device. At this time, the value of the valid event count storage means is updated in accordance with the output of this information to the external data processing device. The output of information to the external data processing device is terminated when this value becomes a specific value.In this way, information on any number of data packets output from the data packet processing device is output to the external data processing device. At the same time, it becomes possible to notify an external data processing device of the arrival time interval between each data packet.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the basic configuration of an interface device of the present invention.

In the figure, reference numeral 2 denotes input storage means for storing information for generating data packets to be input to the data packet processing device as well as input interval information which is information on input time intervals for each data packet. .

Reference numeral 3 denotes input control means for controlling the input of data packets to the data packet processing device, which further includes input number storage means 31 for storing information on the total number of words of input data packets and input interval information. It is being

Reference numeral 8 denotes an output storage means for storing data packets output from the data packet processing device and output interval information, which is information on arrival time intervals between each data packet.

Reference numeral 9 denotes an output control means for controlling the output of the information held by the output data packet and the output interval information to an external data processing device. It is provided with an event number storage means 91 for storing the number of words, and a valid event number storage means 92 for storing the total number of words of data packets and output interval information, which are valid information among the information stored in the output storage means.

[0016] In the apparatus of the present invention, information for generating an arbitrary number of input data packets given from an external data processing device and input interval information indicating the input time interval of the input data packets are stored in the input storage means. 2. Next, from the external data processing device, data for an input request specifying whether or not to store the input data packet and input interval information, and the arrival time interval of the output data packet in the output storage means. is input. In response to the input of this data, the input control means 3 stores total input word count information in the input number storage means 31, generates an input data packet based on the information stored in the input storage means 2, and generates input interval information. input to the data packet processing device at time intervals specified by . At this time, the input number storage means 31 according to the input of the input data packet to the data packet processing device and the input time interval.
Updates the value of and ends input when it reaches a certain value. In this way, it is possible to input any number of data packets to the data packet processing device at any time interval.

Further, output data packets from the data packet processing device and output interval information indicating the arrival time interval between each output data packet are stored in the output storage means 8. At this time, the output control means 9 updates the value of the event number storage means 91 according to the storage of each information in the output storage means 8,
Furthermore, by storing the value of the event number storage means 91 in the valid event number storage means 92 every time the end of the output data packet is stored, output data that is valid information among the information stored in the output storage means 8 is stored. Stores the total number of words in the packet and output interval information. The value of this valid event count storage means 92 is output to the external data processing device in response to a request from the external data processing device. Thereby, the external data processing device knows the information of the output data packet to be received and the total number of words of the output interval information. Subsequently, information on the output data packet and output interval information are output to the external data processing device in response to an output request from the external data processing device. At this time, the value of the valid event count storage means 92 is updated in accordance with the output of this information to the external data processing device. The output of information to the external data processing device is terminated when this value becomes a specific value.In this way, information on any number of data packets output from the data packet processing device is output to the external data processing device. At the same time, it becomes possible to notify an external data processing device of the arrival time interval between each data packet.

FIG. 2 is a block diagram of an interface device in one embodiment of the present invention. As shown in FIG. 3, the data packet handled by the device shown in the figure is composed of 16 bits of data and 2 bits of flag, where bit 17 is a flag indicating the existence of a data packet, and bit 16 is a flag indicating the existence of a data packet. These flags indicate the beginning and end of a data packet.

[0019] First, the case where the data packet processing device receives input of a data packet will be described below.

First, data including information on input data packets and input interval information indicating the time interval between each data packet is input into the register 1 by handshaking with an external data processing device. The format of the data at this time is shown in FIG. As shown in this figure, control information, flags, and data are alternately inputted from the external data processing device, and information on all packets is inputted consecutively in the order in which they are inputted to the data packet processing device. The 4-word data whose part corresponding to the flag after packet 1 is "01" is input interval information. In this case, after packet 1 is input to the data packet processing device, packet 2 is input two clock cycles later. Input control means 3 indicating that
inputs and stores these data according to the control information 2
write to the input buffer 21 of. When a flag is input from an external data processing device, the most significant bit is an identifier indicating the end of input data, and continues writing to the input buffer 21 until the next data of "1" is reached.

Subsequently, when the external data processing device requests input of a data packet to the data packet processing device, the control information shown in FIG. Input data that holds the number of words (two's complement). The input control means 3 stores the total number of input words in the input number storage means 31, stores the information read from the input buffer 21 according to the control information in the input data packet register 22, and inputs the information as a data packet to the data packet processing device. If the read information is input interval information, input of data packets is stopped for a period of clock cycles corresponding to the number of input interval information. At this time, 1 piece of information is sent from the input buffer 21.
Each time a word is read, the value in the input number storage means 31 is incremented, and data packet input is continued until this value becomes "0". Further, the control information is such that when data packets output from the data packet processing device are stored in the output storage means 8, output interval information, which is information indicating the arrival time interval between each data packet, is stored in the output storage means 8. Contains information indicating whether or not.

Next, the case where a data packet is output from the data packet processing device will be explained.

The output data packet output from the data packet processing device is stored in the output buffer 81 of the output storage means 8 via the output data packet register 10. If storage of output interval information is specified when inputting a data packet, after one data packet arrives, writing to the output buffer 81 is continued for all clock cycles until the output buffer 81 becomes full. In cycles in which no data packet arrives, output interval information is stored by writing "01" in the flag area of the output buffer 81. At this time, each time one word is stored in the output buffer 81, the output control means 9 increments the value of the event number storage means 91, thereby controlling the output buffer 81.
Stores the total number of words of information written in 1. Further, when writing the end of each data packet to the output buffer 81, the value of the event number storage means 91 is stored in the valid event number storage means 92.
The number of valid information in the output buffer 81 is memorized by storing the information in the output buffer 81. This is to avoid outputting unnecessary information to the external data processing device, since information stored after the last arriving data packet has no meaning.

On the other hand, in order to know the output data packet to be received and the total number of words of the output interval information, the external data processing device uses control information for requesting the output of the value of the valid event number storage stage 92 shown in FIG. Input data with . Based on this control information, the output control means 9 outputs the value of the valid event number storage stage 92 to the external data processing device.

Next, the external data processing device inputs data in the format shown in FIG. 6, which includes control information for making an output request. Based on this control information, the output control means 9 sends the output data packet and output interval information to the output buffer 8.
1 to the output register 11 and output to the external data processing device in the format shown in FIG. As shown in this figure, the information of all the output data packets is output continuously in the order in which they were output. The four-word data whose part corresponding to the flag after packet 1 in the figure is "01" is output interval information, and in this case indicates that packet 2 arrived two clock cycles after packet 1 arrived. ing. On the other hand, the output control means 9 decrements the value of the valid event number storage means 91 every time one word of information is read from the output buffer 81, and continues outputting the information to the external data processing device until this value becomes "0". do.

[0026]

As described above, according to the interface device of the present invention, any number of data packets having data value information of any number of words can be input to the data packet processing device at any time interval. At the same time, it becomes possible to output the information held by any number of data packets with any number of words of data value information output from the data packet processing device to an external data processing device, and It becomes possible to notify an external data processing device of the arrival time interval between each data packet.

[Brief explanation of the drawing]

FIG. 1 is a basic configuration diagram of an interface device of the present invention;

FIG. 2 is a configuration diagram of an embodiment of the interface device of the present invention;

FIG. 3 is a format diagram of an embodiment of a data packet processed by the data packet processing device of the present invention;

FIG. 4 is a format diagram of data used between the embodiment device of the present invention and an external processing device;

FIG. 5 is a format diagram of data used between the embodiment device of the present invention and an external processing device;

FIG. 6 is a format diagram of data used between the embodiment device of the present invention and an external processing device;

FIG. 7 is a format diagram of data used between the embodiment device of the present invention and an external processing device.

[Explanation of symbols]

1 input register, 2 input data packet storage means, 21 input buffer, 22 input data packet register, 23 input buffer write pointer, 24 input buffer read pointer 25 input buffer pointer selection section, 3
Input control means, 31 Input word count storage means, 32 Input control signal generation section, 4 Input data packet (flag), 5 Input data packet (data), 6 Output data packet (flag), 7 Output data packet (data), 8
Output data packet storage means, 81 output buffer, 82 output buffer write pointer, 83 output buffer read pointer, 84 output buffer pointer selection section, 9 output control means, 91 output word number storage means 92 output control signal generation section, 10 output data packet Register, 11 Output register, 12 Output selection section

Claims (5)

[Claims] Claim 1. An interface device that performs input/output between a data packet processing device that processes data packets including tag information and data value information of an arbitrary number of words, and an external data processing device that performs data processing. Input data packet information that is information necessary to generate an arbitrary number of input data packets holding tag information and data value information of an arbitrary number of words to be input to the data packet processing device, and input of each input data packet. an input storage means for storing input interval information that is information indicating an interval, storing the input data packet information and the input interval information in the input storage means, and generating the input data packet from the input data packet information, an input control means for controlling input of the input data packet to the data packet processing device according to the input interval information, and holding tag information and data value information of an arbitrary number of words output from the data packet processing device; output storage means for storing an arbitrary number of output data packets and output interval information, which is information indicating arrival time intervals between each of said output data packets; said output data packets and said output interval information to said output storage means; and output control means for controlling the output of the output data packet information, which is information held by the output data packet stored in the output storage means, and the output interval information to the external data processing device. , inputting an arbitrary number of the input data packets to the data packet processing device at arbitrary time intervals, and transmitting the output data packet information held by each of the output data packets to the external data processing device. An interface device characterized in that the interface device outputs data and also notifies the external data processing device of the arrival time interval between each of the output data packets. 2. The external data processing device can select whether or not to store the output interval information in the output storage means and output the output interval information to the external data processing device. The interface device according to claim 1. 3. The input control means includes an input number storage means and stores the total number of the input data packet information and the input interval information given from the external data processing device in the input number storage means, and The value of the input number storage means is updated according to the input of a packet to the data packet processing device and the input time interval between each input data packet, and the value of the input data packet is updated according to the value of the input number storage means. Claim 1, characterized in that input to the data packet processing device is terminated.
Alternatively, the interface device described in 2. 4. The output control means includes an event number storage means and a valid event number storage means, and each time the output data packet and the output interval information from the data packet processing device are stored in the output storage means, By updating the value of the article event number storage means and further storing the value of the event number storage means in the valid event number storage means each time the end of each output data packet is stored in the output storage means, The number of valid information, which is the total number of the output data packets and the output interval information stored in the output storage means, is stored, and in accordance with the output of the output data packet information and the output interval information to the external data processing device. updating the value of the valid event number storage means, and terminating the output of the output data packet information and the output interval information to the external data processing device according to the value of the valid event number storage means. 4. The interface device according to claim 1, 2, or 3. 5. The output control means outputs the value of the valid event number storage means to the external data processing device in response to a request from the external data processing device, thereby adjusting the number of valid information to the external data. 5. The interface device according to claim 1, 2, 3, or 4, wherein the interface device notifies a processing device.