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:
Oct. 17, 1995
Filed:
Mar. 08, 1994
Allen Thor, Livingston, NJ (US);
Advanced Micro Devices, Parsippany, NY (US);
Abstract
In a fast-packet network, incoming high-level data-link control (HDLC) data are supplied by a receiving line interface device to a packet management device comprising a receiving state machine that shifts the data through a data link connection identifier (DLCI) extractor. The extracted DLCI is used as an address indicating a location of a translation RAM that stores the destination DLCI and control data corresponding to the incoming HDLC data. The destination DLCI replaces the current DLCI field of the incoming data. A frame control state machine requests a frame buffer of a frame buffer RAM to be allocated to the incoming HDLC packet and writes the data to the allocated buffer. Simultaneously, a packet availability message is sent to the destination packet management device indicated by the control data in the translation RAM. A transmitting circuit of the destination packet management device has a transmitting state machine that rewrites the HDLC data from the frame buffer RAM to a FIFO register. When the FIFO register is full or entire data frame is in the FIFO register, the data are transferred to an HDLC transmitter coupled to a transmitting line interface device.