METHOD AND SYSTEM TO REDUCE POWER USAGE ON AN I/O INTERFACE

摘要

Methods and apparatuses for applying different voltages to an I/O interface (such as to the pads of the I/O interface) and determining the data integrity of communicating data (either transmitting to or receiving data from) to another device is disclosed. Data integrity may be measured in one of several ways, such as the window (or timing) at which data can be transmitted correctly using the different voltages. The determined data integrity may be compared with a minimum data integrity, such as a minimum window. In the event that the determined data integrity is greater or better than the minimum data integrity, then the voltage may be reduced and the data integrity determination may be performed again. In this way, the voltage applied to the I/O interface may be reduced while still meeting the minimum data integrity requirements.

主权项

1. An I/O interface configuration device comprising:
a voltage component configured to output a voltage to at least a part of an I/O interface; and an iterative component configured to iterate at a plurality of different voltages by:
commanding the voltage component to output each of the plurality of different voltages to the at least a part of the I/O interface;determining under which one or more conditions data is correctly transferred via the I/O interface using each of the plurality of different voltages; an I/O interface selection component configured to select, based on the one or more conditions under which the data is correctly transferred, the voltage applied to the at least a part of the I/O interface.