Apparatus and method in a network interface device for storing a

Details Apparatus and method in a network interface device for storing a Apparatus and method in a network interface device for storing a

1997-12-18

2000-04-04

Olms, Douglas W.

Multiplex communications

Pathfinding or routing

Store and forward

370392, 710 53, H04L 1228, H04L 1256, H04L 1254

Patent

active

060470011

ABSTRACT:
A network interface device having a random access memory for buffering data between a host bus interface and a media access controller includes a buffer controller configured for storing a data frame in combination with tracking and status information associated with the storage of the data frame. The memory controller is configured for writing transmit frame data received from a host bus into the random access memory, and generating tracking information based on transfer status signals corresponding to the transfer of the data frame from either a master transfer mode or a slave transfer mode. Hence, the amount of logic associated with generating the tracking, control and/or status information is independent of the nature of the transfer from the host bus. The tracking and status information is stored in memory locations contiguous with the data frame to enable a read controller to access the status information and the corresponding data frame as a single data unit. A second write controller for data received from the media access controller stores the received data frame and the corresponding status information from the media access controller in contiguous memory locations in a receive buffer to form a single data unit.

REFERENCES:
patent: 5951635 (1999-09-01), Kamgar
patent: 5974518 (1999-10-01), Nogradi
patent: 5987506 (1999-11-01), Carter et al.

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