DATA TRANSMISSION METHOD AND APPARATUS FOR INTERFACING BETWEEN MAIN SYSTEM AND MICROCOMPUTER

摘要

A data transmission apparatus for transmitting a data between a main system and a microcomputer which can apply to the system the microcomputer which is not provided with a logic circuit performing an interface with the main system, sense both the main system and microcomputer by using an error sensing bit to sense a problem in transmission, and improve a transmission speed of the system by increasing a size of the data to be processed at one time, includes: a signal controller sensing the data transmission and outputting first and second transmission control signals; a data transmission detector communicating the data transmission to the microcomputer according to the first control signal from the signal controller; and a double buffer latching the data for a predetermined period in order for the main system or microcomputer to read through a corresponding port the data to be transmitted according to the first and second transmission control signals from the signal controller, and a method thereof.