Data transfer control device and electronic equipment

Details Data transfer control device and electronic equipment Data transfer control device and electronic equipment

2005-09-20

2005-09-20

Nguyen, Chau (Department: 2661)

Multiplex communications

Channel assignment techniques

Carrier sense multiple access

C370S462000

Reexamination Certificate

active

06947442

ABSTRACT:
A data transfer control device and electronic equipment that make it possible to implement high-speed data transfer with reduced overhead processing of firmware and smaller hardware. A data transfer control device that conforms to the IEEE 1394 standard comprises an arbitration circuit that permits firmware (FW) transfer after the completion of one transaction (or one packet transfer) in the continuous packet transfer, if the CPU issues an FW transfer start command during the execution of continuous hardware transfer (HW transfer) processing by a SBP-2 core. If HWStart and FWStart signals go active together, the FW transfer has priority. A header area in RAM is divided into an ordinary header area and an HW header area, and an address generation circuit switches between generating addresses for the ordinary header area and addresses for the HW header area, based on an HWDMARun signal from the arbitration circuit. A data area in RAM is divided into an ORB area and a stream area for the SBP-2 core.

REFERENCES:
patent: 5343473 (1994-08-01), Cidon et al.
patent: 5440752 (1995-08-01), Lentz et al.
patent: 5557608 (1996-09-01), Calvignac et al.
patent: 5822568 (1998-10-01), Swanstrom
patent: 6032261 (2000-02-01), Hulyalkar
patent: 6374319 (2002-04-01), Singh
patent: 6389496 (2002-05-01), Matsuda
patent: 6445718 (2002-09-01), Muto
patent: 6473816 (2002-10-01), Yoshida et al.
patent: 6523058 (2003-02-01), Fung et al.
patent: 6574688 (2003-06-01), Dale et al.
patent: 6584539 (2003-06-01), James et al.
patent: 6633547 (2003-10-01), Akatsu et al.
patent: 2003/0005194 (2003-01-01), Stone et al.
patent: 2004/0139386 (2004-07-01), Ishimura et al.
patent: 0 582 537 (1994-02-01), None
patent: 0 684 719 (1995-11-01), None
patent: 849913 (1998-06-01), None
patent: A 10-178438 (1998-06-01), None
“1394 Bridge Controller, INIC-1410: ATA/ATAPI IDE to IEEE1394 Bridge Controller Solution”; Taking Data Further. ™; Initio Corporation; Feb. 1, 2000.
“SAA7356HL, p1394a Compatibility Asynchronous Link Layer Controller”; Philips Semiconductors Co., Ltd.
http:/www.oxsemi.com/products/main.html; “Laser product—the OXFW900”.

Affiliated with

Also associated with

Rating

Data transfer control device and electronic equipment does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data transfer control device and electronic equipment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data transfer control device and electronic equipment will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3402155