Method for assigning priority to receive and transmit requests i

Details Method for assigning priority to receive and transmit requests i Method for assigning priority to receive and transmit requests i

1993-03-26

1996-08-13

Lee, Thomas C.

Boots, shoes, and leggings

395841, 395849, 395860, 364239, 3642396, 3642397, 364DIG1, G06F 1314

Patent

active

055465439

ABSTRACT:
An arbiter of an I/O controller implements an arbitration process for controlling bi-directional data flow between a local area network and a main memory connected to a system bus having variable latency. A receive state machine of the controller manages inbound data bursts from the network by temporarily storing the data in a receive buffer before transfer to the main memory. Outbound data bursts from the main memory are managed by a transmit state machine of the controller, and are temporarily stored in a transmit buffer prior to transmission onto the network. The arbitration process assigns each of the receive and transmit state machines priority for accessing the system bus depending upon certain status conditions of the controller. These conditions include: (i) whether one or both of the state machines are contending for access to the system bus; (ii) whether the controller is configured for full-duplex or half-duplex communication over the network; (iii) the current status of the transmit and receive network ports; and (iv) the current state of the receive and transmit buffers.

REFERENCES:
patent: 4727538 (1988-02-01), Furchtgott et al.
patent: 4866597 (1989-09-01), Kinoshita
patent: 4866702 (1989-09-01), Shimizu et al.
patent: 4910507 (1990-03-01), Shimizu et al.
patent: 5255371 (1993-10-01), Latimer et al.
patent: 5276681 (1994-01-01), Tabagi et al.
patent: 5295246 (1994-03-01), Bischaff et al.
patent: 5301274 (1994-04-01), Li
patent: 5377184 (1994-12-01), Beal et al.
patent: 5440691 (1995-08-01), Carrafiello et al.

Affiliated with

Also associated with

Rating

Method for assigning priority to receive and transmit requests i does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for assigning priority to receive and transmit requests i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for assigning priority to receive and transmit requests i will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1056330