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. 27, 2001
Filed:
Dec. 18, 1997
Jayant Kadambi, Milpitas, CA (US);
Mohan V. Kalkunte, Sunnyvale, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A network switch in a packet switched network has multiple network ports, each having a physical layer transceiver, a media access controller, transmit and receive buffers, and a bus interface for transferring data using a host processor. The network switch includes a low-latency mode, where a transfer request is initiated by a network switch port when the receive buffer includes 16 bytes of packet data. If during transfer the MAC detects a collision on the shared network medium, the network port generates a HALT signal in response to detecting a collision, enabling the host controller transferring data from the network port to abort the transfer, and begin transfer on another port. Status information also is stored in the receive buffer in response to the detected collision. Generation of the HALT signal enables the network switch to operate in low-latency mode without requiring substantial resources by the host processor to filter collision fragments or runt packets.