JPS59123917A - Communication control system - Google Patents

Abstract

PURPOSE:To increase versatility of circuit controlling procedure and reduce memory area of a circuit corresponding section by controlling circuit by a circuit controlling device basing upon transferred program. CONSTITUTION:A common section CCU transfers a program necessary for communication control in a main memory MEMO to the circuit corresponding section TTU using a data transfer passage D-BUS basing on command of a central processing unit MPU. The corresponding section TTU stores transferred data from the common section CCU in an internal memory MEM1 through a data buffer register DBR and an internal bus mu-BUS. Basing on data transfer report from the common section CCU, the MPU recognizes that the program is stored in the memory MEM1 of the corresponding section TTU. The MPU notifies the corresponding section TTU of the completion of program loading and gives direction for circuit control to the common section CCU and corresponding section TTU.

Description

Detailed Description of the Invention (1) Technical Field of the Invention The present invention relates to a communication control device that controls a plurality of lines, and particularly relates to a communication control device that controls a plurality of lines by having a line processing device in each line corresponding section. Regarding the method.

(2) Background of the technology In general, in a communication control device that controls multiple lines, a line handling unit (TTU) is provided for each individual line, as shown in Figure 1. are connected to the common part (ooty) through a common data transfer path. Each line corresponding section and common section are connected to the central processing unit (Master-MPU) through control buses 0-BU8, and each line is controlled by the central processing unit, which issues instructions necessary for line processing to the common section and line corresponding section. It is done by giving instructions.

(3) Prior Art and Problems Conventionally, in the communication control device described above, the processing program of the line processing unit (5layθ-MPU) of the 1ijlN corresponding section is stored in the memory (MIcMl) provided in each line corresponding section.
), and each line corresponding unit performs line control in response to instructions from the central processing unit, as described above.

By the way, as shown above, the processing program of the line processing device is a memo in the line handling unit TTU! Because it is stored in JMEIMi in advance, the flexibility of line control procedures and the content of line processing are restricted accordingly.In addition, in order to execute various types of control, all corresponding programs must be installed. There is a problem that the data must be stored in M11M1, and the memory capacity must be increased accordingly.

(4) Object of the Invention An object of the present invention is to write unique data to the control register of the line correspondence section from the central processing unit to the line correspondence section prior to line control, so that the common section and the line correspondence section can be connected to each other. Transfers a program necessary for line control of the line processing device n to the memory section of the line corresponding section using the data transfer path of
The purpose of this invention is to increase the flexibility of line control procedures and reduce the memory area of the line handling section by having the line processing device control the line using the transferred program.

(5) Structure of the Invention The present invention includes a common control unit having a central processing unit that controls a plurality of lines, a line processing unit that controls lines for each line, a memory unit, and the central processing unit. In a communication control device comprising a line correspondence section having a control register controlled by the central processing unit, prior to line control, the central processing unit writes unique data to the control register of the line correspondence section, and A program necessary for line control of the line processing device a is transferred to the memory section of the line handling unit through a data transfer path between the common control unit and the line control unit, and the same line processing unit is connected to the central processing unit. A communication control method is provided which is characterized in that a line is controlled according to a program transferred by a device.

(6) Embodiments of the Invention A communication control system as an embodiment of the invention will be described below with reference to the drawings.

Main memo! All programs necessary for processing various communication procedures are stored in J (MIMO).

Prior to controlling the line, the central processing unit (Master MPU) reads the control register (
It writes unique data (program loading instruction) to the common section (00υ) and instructs the common section (00υ) to transfer data to the line corresponding section (TTU). Thereby, the common unit (OOU) transfers the program necessary for communication control in the main memory (Ml[IMO) to the line support unit (TTU) using the data transfer path (D-BUS). The line handling unit (TTU) transfers the transfer data from the common unit (ootr) to the internal memory (MlIM) via the data buffer register (DBR) and the internal bus (μmBUS).
1). Central processing bag W (MasterMPU)
recognizes that the program has been stored in the memory (MIDMi) of the line corresponding section by the data transfer completion report from the common M (a o tr ). Therefore, the central processing unit (Master MPU)
) of the end of program loading, and instructs the common unit (aotr) and line handling unit (TTU) for line control. As a result, the line processing equipment (5l)
ave MPU) controls the line based on the above-mentioned stored program.

In the above communication control method, it is possible to increase the flexibility of line control procedures and reduce the memory area of the line handling section.

(7) Effects of the invention According to the present invention, without adding hardware,
It is possible to provide a communication control method that can support various line control procedures without replacing the memory of the line handling section.

[Brief explanation of drawings]

The drawing is a diagram showing a communication control method according to the present invention. (Explanation of symbols) Master MPU S central processing unit, Ml1MOt
Main memory, 0OUI common section, T'I'U1 line support section,
ORO, 0R11 control register, DBRI data buffer register, 5-layer MPU S line processing/pass writing,
MIM1 iris memory, T/R1 transmitting/receiving section.

Claims (1)

[Claims] ? &F (a common control unit that has a central processing unit that controls individual lines, a line processing unit that controls each line for each line, a memory unit, and a control register that is controlled by the central processing unit) In the communication control device, the central processing unit writes unique data to the control register of the line corresponding unit prior to line control, and the common control unit and the line control unit A program necessary for line control of the line processing device is transferred to the memory unit of the line processing unit through a data transfer path between the lines, and the 1al1%! processing unit controls the line according to the program transferred by the central processing unit. A communication control method characterized by performing the following.