Patent ID: 9367498
Filing Date: 2016-06-14
CPC Classification: G06F

Claim Text:
1. A resource request arbitration device that grants permission to access a shared resource to a resource request device having a highest priority among a plurality of resource request devices that each issue a request to access the shared resource, the resource request arbitration device comprising: a plurality of counters that are provided in one-to-one correspondence with the resource request devices, and are each configured to store therein a counter value indicating a priority of a corresponding resource request device; a plurality of level signal generation units that are provided in one-to-one correspondence with the counters, and are each configured to generate a one-hot level signal based on a counter value stored in a corresponding counter; and a specification unit configured to specify the resource request device having the highest priority based on a bit position of an active bit of the level signal generated by each of the level signal generation units, wherein the specification unit compares the level signals generated by the level signal generation units to specify a level signal having an active bit at a bit position with a highest priority among the level signals, and specifies, as the resource request device having the highest priority, one of the resource request devices that corresponds to the specified level signal.