Other

Ryuichi Murashima

Takashi Miyamoto

Hiroshi Takeda

Kazushige Ayukawa

Jun Sato

Hiroyuki Hamasaki

Isamu Mochizuki

Kazuhiro Hirade

Makoto Takano

Kenichiro Omura

Yasuhiko Hoshi

A semiconductor device is connected to a CPU, a memory and I/O devices to serve as a data transfer bridge for efficient data transfer between the memory and the I/O devices. A CPU interface and a plurality of I/O interfaces included in a bridge chip are connected through an internal bus to a memory interface included in the bridge chip. Each I/O interface has a read/write buffer and a DMAC. An arbiter included in the bridge chip determines a bus master for which data transfer is permitted in response to requests for data transfer from each of the CPU interface and the DMAC to the memory. Each of the I/O interfaces has a control function to skip part of areas in the memory when transferring data between the memory and the I/O interface.

Semiconductor device supporting integrated data transfer bridging between CPU memory and I/O device

Growing community of inventors

Kokubunji, Japan

Ryuichi Murashima