Data transfer apparatus and data transfer method

Details Data transfer apparatus and data transfer method Data transfer apparatus and data transfer method

2006-09-11

2010-10-12

Dang, Khanh (Department: 2111)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus interface architecture

C710S306000, C710S240000, C711S146000

Reexamination Certificate

active

07814257

ABSTRACT:
A data transfer apparatus for transferring data between a system bus and a local bus at a high speed is provided. A bus bridge101is connected between a system bus132and a local bus137. Data transferred between a CPU133, an I/O device136and a main memory135on the system bus132are retained in an associative memory106via an associative memory control unit105. When an access to this data from an I/O device138on the local bus137is generated, the data are transferred from the associative memory106to the I/O device138. Thus, when a data transfer request from the I/O device138to the main memory135is generated, no bus cycle is generated on the system bus132as long as this data are retained in the associative memory106. Consequently, the data can be transferred at a high speed.

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