Method and apparatus of allocating minimum and maximum bandwidths on a bus-based communication system
AssigneeTellabs Petaluma, Inc.
InventorsPaul B. Ripy, Keith Q. Chung, Gary J. Geerdes, Christophe P. Leroy
Life of this patent
Estimating the term…
Abstract
Access to a bus is granted to one of a number of requesting communication circuits that each submitted a bus control request during a request period of an arbitration period in response to the entries in a priority table. If a requesting communication circuit has an identity and priority that match the identity and priority of a communication circuit stored in a row of the priority table that corresponds with the arbitration period, access to the bus is granted to the requesting communication circuit.
Claims20
A method of granting access to a bus to one of two or more requesting communication circuits that each submitted a bus control request during a request period of an arbitration period, the method comprising:
- determining a stored identity associated with the arbitration period, the stored identity identifies a communication circuit;
- and
- determining whether any requesting communication circuit has an identity that matches the stored identity.
A communications circuit comprising:
- a transmit circuit to transmit information onto a cell bus;
- a receive circuit to receive information from the cell bus;
- a memory to store grant information regarding a plurality of arbitration periods, the grant information for each arbitration period including a stored identity that identifies a communication circuit;
- and
- a logic circuit connected to the transmit circuit, the receive circuit, and the memory to determine whether any communication circuits requested control of a bus during an arbitration period, the logic circuit to determine a stored identity associated with the arbitration period, and whether any requesting communication circuit has an identity that matches the stored identity.
Dependencies are inferred from the claim text.