KR890002754A - Protocol Inverter and Conversion Control Method - Google Patents

Abstract

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Description

Protocol Inverter and Conversion Control Method

Since this is an open matter, no full text was included.

1 is a conventional circuit diagram, FIG. 2 is a circuit diagram according to the present invention, and FIG. 3 is a protocol selection flowchart according to the present invention.

Claims (2)

In the protocol conversion apparatus, a main centralized apparatus (110) for determining and determining to transform the received information into a desired protocol and transmit and receive it, and a clock supply unit (120) for supplying a system clock to the main central processing apparatus (110). And a programmable peripheral interface circuit 160 for polling the transmission protocol determination signal of the main central processing unit 110 and outputting a protocol conversion control signal, each connected by a RS-232C method from a public telephone network. The ADCCP, HDLC, and SDLC controllers 130X-150 capable of exclusively performing the ADCCP, HDLC, and SDLC communication protocols by receiving the protocol determination signal of the main CPU 110, and the programmable peripheral interface circuit 160. First buffers 210, 221, and 222 buffering the address latch enable signals of the ADCCP, HDLC, and SDLC controllers 130, 140, and 150 to three states according to the output control signal of And a hold signal of the ADCCP, HDLC, and SDLC controllers 130-140 to hold the main central processing unit 11 and input a hold signal of the corresponding protocol controller 130-140 to input the hold signal of the protocol controller 130-140. And an end gate 227 for holding 110 and gaining control at the corresponding protocol controller. In the control method for converting a protocol comprising a central processing unit 110, ADCCP, HDLC, SDLC controller (130-150), programmable peripheral interface circuit 160, in the control of the central processing unit (110) A first step of initializing each board of the ADCCP, HDLC, and SDLC controllers 130-150 by mode; and a step of initializing each board of the controllers 130-150 by mode from the public telephone network in the first step. Polling ports PA ₁ -PA ₂ of the programmable peripheral device interface circuit 160 when receiving information through any one of the controllers 130-150 from the public telephone network in step 1 and the first process. A second process of setting a mode, a third process of checking whether a value set from the second process and a key input value set according to a protocol by the user are the same, and a key input value from the third process When A protocol conversion method for controlling characterized by a third constituted by any process that enables the select protocol conversion control board. ※ Note: The disclosure is based on the initial application.