System and method for reducing cross coupling effects

Abstract

A device includes a plurality of driver circuits coupled to a plurality of bus lines. A first driver circuit of the plurality of driver circuits is coupled to a first bus line of the plurality of bus lines. The first driver circuit includes one of a skewed inverter, a level shifter, a latch, and a sense amplifier configured to produce an output signal that transitions after a first delay in response to a first digital value transition of an input signal from high to low and transitions after a second delay in response to a second digital value transition of the input signal from low to high. The first delay is different from the second delay by an amount sufficient to reduce power related to transmission of signals over the first bus line and over a second bus line in close physical proximity to the first bus line.

Description

I. FIELD[0001]The present disclosure is generally related to reducing cross coupling effects.II. DESCRIPTION OF RELATED ART[0002]Advances in technology have resulted in smaller and more powerful computing devices. For example, there currently exist a variety of portable personal computing devices, including wireless computing devices, such as portable wireless telephones, personal digital assistants (PDAs), and paging devices that are small, lightweight, and easily carried by users. More specifically, portable wireless telephones, such as cellular telephones and internet protocol (IP) telephones, can communicate voice and data packets over wireless networks. Further, many such wireless telephones include other types of devices that are incorporated therein. For example, a wireless telephone can also include a digital still camera, a digital video camera, a digital recorder, and an audio file player. Also, such wireless telephones can process executable instructions, including softwa...

AI Technical Summary

Benefits of technology

This patent describes a method for reducing power consumption in a computer network. The method involves using a delay element to produce output signals that transition after a delay in response to input signals. This delay helps to prevent signals on different bus lines from switching simultaneously, which can save energy and reduce power consumption. The delay element can be a skewed inverter, level shifter, latch, or sense amplifier. Overall, this method helps to improve the efficiency and reliability of computer networks.

Problems solved by technology

As electronic devices such as wireless telephones become smaller, there may be a tradeoff between scaling technology and power dissipation of on-chip buses in the electronic devices.

However, this may not effectively address the increased power dissipation because line to line capacitance may still occur at supply nodes of the bus lines.

However, increasing the spacing between bus lines may result in an unacceptable increase in die area.

However, it may be difficult to locate logically mutually exclusive signals.

For example, the delay element may prevent signals on the first and second bus lines from switching at the same time, potentially reducing the energy required to switch the bus lines.

For example, the delay element may prevent signals on the first and second bus lines from switching at the same time, potentially reducing the energy required to switch the bus lines.

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