US 9,071,239 B2 · Method and semiconductor apparatus for reducing power when transmitting data between devices in the semiconductor apparatus

Abstract

A semiconductor apparatus is provided herein for reducing power when transmitting data between a first device and a second device in the semiconductor apparatus. Additional circuitry is added to the semiconductor apparatus to create a communication system that decreases a number of state changes for each signal line of a data bus between the first device and the second device for all communications. The additional circuitry includes a decoder coupled to receive and convert a value from the first device for transmission over the data bus to an encoder that provides a recovered (i.e., re-encoded) version of the value to the second device. One or more multiplexers may also be included in the additional circuitry to support any number of devices.

Claims36

Dependent claims

A semiconductor apparatus, comprising:

an input bus configured to receive an encoded input from a first device;
an output bus comprising a set of output signal lines, wherein each of the output signal lines represents a decoded value of the encoded input;
and
a toggle decoder coupled to the input bus and the output bus, and configured to toggle at most one of the output signal lines based on the decoded value.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

13/799,686Filed 13 Mar 2013

Published

US 2014/0266398 A118 Sep 2014

Granted

30 Jun 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

H03K 17/002
Electronic switching or gating, i.e. not by contact-making and –breaking: switching arrangements with several input- or output terminals
G11C 7/10
Arrangements for writing information into, or reading information out from, a digital store: input/output [I/O] data interface arrangements, e.g.…
G11C 7/1006
Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers: data managing, e.g. manipulating data before…
G11C 7/02
Arrangements for writing information into, or reading information out from, a digital store: with means for avoiding parasitic signals

Method and semiconductor apparatus for reducing power when transmitting data between devices in the semiconductor apparatus

Life of this patent

Method and semiconductor apparatus for reducing power when transmitting data between devices in the semiconductor apparatus

Life of this patent

Abstract

Claims36