Advanced Micro Devices Corporation

Insilicon Corporation

Mark William Knecht

Dennis Tunglin Lee

Scott Waldron

Daniel Noah Paley

Jacques Ah Wong

Oikwan Tsang

Kalaine Mak Wong

A method of testing a device includes monitoring an output of the device, wherein the output is generated by the device in response to an applied test command; and resolving the output into atomic operations, wherein the atomic operations are substantially the smallest constituent operations which are substantially independent of the device. The method is used to provide a simple, comprehensive test environment that effectively tests 1394 and 1394-1995 designs, for example, in Verilog. The test environment contains rules which completely characterize the behavior of different 1394 bus protocols as defined by the IEEE specifications. The test environment provides portability between different devices under test and between different protocols, automated closed-loop reconciliation of test commands and protocol requirements, topology independence, and out-of-order execution of instructions or relative sequencing. The test environment further allows failure injection, and separate and independent design of the device and a test system.

Device and method for testing a device through resolution of data into atomic operations

An input buffer for an integrated circuit and providing reduced sensitivity to input noise present in a transmission line environment. This input buffer deskews an input signal where the rise time is much slower than the fall time, such as that from an open-collector output driver, so that the rising edge propagation delay and falling edge propagation delay of the input buffer are approximately equal.

Transmission-line-noise immune input buffer

An improved bus bridge in a computer system for connecting a first data bus and a second data bus, said bus bridge having means for connecting said first and second buses, means for receiving an address representing a transaction on said first bus, means for decoding said address, means for claiming the transaction on said first bus corresponding to said address, and means for passing said transaction to said second bus, wherein the improvement comprises: (a) means for determining if said address decodes into one of a plurality of address ranges programmed in said bridge device; (b) means for determining a timing speed for the transaction corresponding to said address in accordance with the address range for said address; and (d) means for asserting a signal for claiming the transaction at said determined timing speed.

Bus bridge that provides selection of optimum timing speed for transactions

Growing community of inventors

Los Gatos, CA, United States of America

Mark William Knecht