Grant removal via dummy master arbitration
AssigneeLSI Logic Corporation
InventorsJeffrey J. Holm, Judy M. Gehman
Life of this patent
Estimating the term…
Abstract
A system for controlling arbitration that may be used for a bus. The system generally comprises a bus, at least one master, and a first circuit coupled between the bus an the at least one master. The at least one master may be configured to present at least one transfer signal. The first circuit may be configured to (i) grant a bus mastership to a first master of the at least one master, (ii) present a first transfer signal of the at least one transfer signal to the bus in response to granting the bus mastership to the first master, (iii) remove the bus mastership from all masters of the at least one master, and (iv) present an idle transfer signal to the bus in response to removing the bus mastership from all masters.
Claims20
A system comprising:
- a bus;
- at least one master configured to present at least one transfer signal;
- and
- a first circuit coupled between said bus and said at least one master, said first circuit configured to (i) grant a bus mastership to a first master of said at least one master, (ii) present a first transfer signal of said at least one transfer signal received from said first master to said bus in response to granting said bus mastership to said first master, wherein said first transfer signal is different than an idle transfer signal, (iii) remove said bus mastership from all masters of said at least one master, and (iv) present said idle transfer signal to said bus in response to removing said bus mastership from said all masters.
A method of operating a bus comprising the steps of:
- (A) granting a bus mastership to a first master of at least one master;
- (B) presenting a first transfer signal of at least one transfer signal generated by said first master to said bus in response to step (A), wherein said first transfer signal is different than an idle transfer signal;
- (C) removing said bus mastership from all masters of said at least one master;
- and
- (D) presenting said idle transfer signal to said bus in response to step (C).
A system comprising:
- means for granting a bus mastership to a first master of at least one master;
- means for presenting a first transfer signal of at least one transfer signal generated by said first master to said bus in response to granting said bus mastership to said first master, wherein said first transfer signal is different than an idle transfer signal;
- means for removing said bus mastership from all masters of said at least one master;
- and
- means for presenting said idle transfer signal to said bus in response to removing said bus mastership from said all masters.
Dependencies are inferred from the claim text.