Patent ID: 6580711
Filing Date: 2003-06-17
Classification: G06F,H04L

Abstract:
A serial interface circuit for performing transmission and reception of an asynchronous packet between its own node and another node connected to its own node via a serial interface bus, comprising:a first interface for transferring data directly between the serial interface circuit and a storage device of an external device connected to said serial interface circuit; a second interface for transferring commands and data directly between the serial interface circuit and a processor of said external device connected to said serial interface circuit; and a data processing circuit comprising a first storage means and a second storage means, which, when transferring the data of another node to its own node, generates a request packet to which it has added a self-designating label, stores the generated request packet in the first storage means, transmits the stored request packet to the serial interface bus at a predetermined timing, receives a response packet with respect to this request packet from the another node, extracts a data portion from the response packet, stores the received data in the second storage means, and transfers the stored received data to said external device at a predetermined timing.