The electronics test engineer is constantly challenged by a myriad of digital interfaces. Military, Space, Communications, and Automotive electronics all utilize both industry standard and custom digital interfaces. Many of these interfaces are supported with test instrumentation that is dedicated to a specific interface or alternatively, a cycle-based, general purpose digital I/O instrument may be employed. Using dedicated test instrumentation can be very costly and general purpose digital I/O instrumentation can offer only a partial solution as well as requiring substantial programming / debugging, with either solution ultimately driving up the cost of test. A user-programmable FPGA-based solution can offer a cost-effective, alternative solution for supporting digital interfaces and specifically, serial interfaces.
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