Interface bus speed optimization

Abstract

Various devices, such as storage devices or systems are configured to transmit data between various components over one or more interfaces. The operation of these interfaces is based on the mechanical limits of the components doing the communication, often latches. Latches often require a setup and hold time limit on the signal being transmitted to be held a desired value. Because the physical effects of the environment, such as voltage being provided, temperature of the component, for example, can affect the operation of the latch, there is often a large margin used to operate them. These large margins avoid errors but decrease overall speed of the interface. By utilizing a test latch within an interface bus group with a drop in operating voltage, changes in output detected can be indicative of upcoming errors. Once detected, the error can be remedied by increasing voltage, lowering operating speeds, or cooling the components.