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:
Nov. 02, 2004
Filed:
Feb. 20, 2001
Michael A. Smith, Boulder Creek, CA (US);
Chang-Chi Liu, Fremont, CA (US);
ControlNet, Inc., Campbell, CA (US);
Abstract
An interface device allows communication between a 1394 device and an Ethernet via an 802.3 PHY. To the 1394 link, the device appears as a 1394 PHY, to the 802.3 PHY, the device appears as an 802.3 MAC. The interface device includes a 1394 PHY-link link interface, a Gigabyte Media Independent Interface (GMII), checksum padding and checksum stripping units, emulated 1394 PHY registers, and a clock generation unit. The interface device uses two clocks to supply timing clocks for the 1394 link and for the 802.3 PHY. For speed matching, the interface device matches the data rate of the link (S100, S200, S400, S800) with the PHY (nominally 1 Gbps) using a padding algorithm. The interface device provides the link with management information through a set of IEEE 1394 compatible registers that are accessed through the 1394 interface, emulating a single port 1394 PHY. The interface device also manages the IEEE 802.3 PHY as would a MAC through the MDC/MDIO interface.