The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 01, 1994
Filed:
Mar. 13, 1991
Masatoshi Ohnishi, Kasugai, JP;
Fujitsu Limited, Kawasaki, JP;
Fujitsu VLSI Limited, Kasugai, JP;
Abstract
In a SCSI device in a small computer system including a plurality of apparatuses, each apparatuses having a SCSI device connected to the apparatus by a MPU bus, and connected to each other through the SCSI device and a SCSI bus. Further each apparatus has an identification (ID) code, and the SCSI device includes; an ID setting register operatively connected to the MPU bus for setting the ID code of another device; an address decoder operatively connected to the ID setting register for decoding the ID code; a transfer parameter storage unit operatively connected to the MPU bus and the address decoder for storing the transfer parameters for all apparatuses constituting the small computer system, and divided into a plurality of memory blocks equivalent to number of the apparatuses to store the transfer parameters for each apparatus; a register operatively connected to the MPU bus for storing various data from the MPU bus; a read/write control unit for receiving a read/write signal and an address signal from the microprocessor, and outputting these signals to the ID setting register, the transfer parameter storage unit, and the register; a data FIFO connected between the SCSI bus and the MPU bus for temporarily storing data; and a transfer control unit operatively connected to the data FIFO and the transfer parameter storage unit for controlling the transfer of the data based on a request signal and an acknowledge signal from the other device through the SCSI bus.