Abstract: To address the need for efficient and reliable testing of integrated devices, system on chips, and computers, deterministic behavior for an interface is accomplished by fixing variation in latency associated with receiver and transmitter data stream. The interface may be a serial interface that is PCIe compliant and corrects latency variations in the receiver that consequently results in deterministic transmit data. Consequently, the data received and/or transmitted is predictable with respect to time and facilitates testing and validation of the devices and logic associated with the interface.