Swaroop Adusumilli has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A deadlock detection and resolution circuit for resolving a deadlock condition in a bridge circuit coupled to a memory, a host bus and a PCI bus of a computer system. The host bus and the PCI bus are configured to operate concurrently and asynchronously. The bridge circuit includes a host master circuit and a PCI slave circuit coupled between the host bus and the PCI bus and configured to service a PCI-MEMORY instruction from an external PCI master coupled to the PCI bus. A PCI master circuit and a host slave circuit within the bridge circuit couples between the PCI bus and the host bus and configured to service a CPU-PCI transaction from a CPU coupled to the host bus. The aforementioned deadlock condition occurs when the PCI-MEMORY transaction proceeds simultaneous with an issuance of the CPU-PCI transaction. The deadlock detection and resolution circuit includes first circuit for asserting an asynchronous handshake signal to the PCI slave of the bridge circuit.
August 27, 1996
Date of Patent:
June 2, 1998
VLSI Technology, Inc.
Swaroop Adusumilli, Barry M. Davis, Brian N. Fall, Nicholas J. Richardson, Philip Wszolek