Circuitry for allocating access to a demand-shared bus

Details Circuitry for allocating access to a demand-shared bus Circuitry for allocating access to a demand-shared bus

H - Electricity

04

L

340/84

H04L 5/14 (2006.01) G06F 13/374 (2006.01)

Patent

CA 1193338

- 29 - CIRCUITRY FOR ALLOCATING ACCESS TO A DEMAND-SHARED BUS Abstract Circuitry is disclosed for allocating requests for demand-shared bus access among a plurality of service requesting ports. During bus contention time, each requesting port synchronously and sequentially applies the digits of its assigned unique priority code to the bus beginning with the most significant digit. After the application of all digits, only the requesting port having the highest code remains in contention and it seizes the bus. Increased flexibility in port preference is provided by the use of a plurality of status flip-flops in each port for generating port parameter bits. The generated parameter bits are applied to the bus as the most significant bits of a dynamic port priority code during contention time. However, the selective application of a mask signal to a mask conductor during contention time causes each requesting port to ignore any parameter bits on the bus as long as the mask signal remains. This returns control of the port preference to any unmasked parameter bits and to the assigned port priority codes.

418992

Affiliated with

Also associated with

Rating

Circuitry for allocating access to a demand-shared bus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuitry for allocating access to a demand-shared bus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuitry for allocating access to a demand-shared bus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1179398