METHOD AND DEVICE FOR SIMPLIFYING CONTROL OF LOCAL AREA NETWORK-CONTROLLER IN LOCAL AREA NETWORK WHILE CONTROLLING DATA TRANSMISSION IN LOCAL AREA NETWORK

摘要

PURPOSE: To considerably simplify a circuit configuration and to simplify control of a LAN by eliminating the need for an FIFO circuit from the LAN controller. CONSTITUTION: In the LAn controller, having a 1st shift register SR1 applying parallel processing to a serial form information RXD and a 2nd shift register SR2, applying a serial processing to parallel form information sets TXD0-TXD7, an inexpensive data register R1(R2) consisting of 8 1-bit registers is provided between the 1st shift register SR1 (2nd shift register SR2) and a buffer memory BM with respect to a host computer to provide a buffer time with respect to 1-byte and risk of an overflow/underflow is completely prevented by this buffer time, as well as the circuit configuration being simplified.