US 2019/0356519 A1 · LOW POWER PHYSICAL LAYER DRIVER TOPOLOGIES

Abstract

System, methods and apparatus are described that facilitate transmission of data, particularly between two devices within electronic equipment. Transmission lines are selectively terminated in an N-phase polarity encoded transmitter when the transmission lines would otherwise be undriven. Data is mapped to a sequence of symbols to be transmitted on a plurality of wires. The sequence of symbols is encoded in three signals. A first terminal of a plurality of terminals may be driven such that transistors are activated to couple the first terminal to first and second voltage levels. The first terminal may further be driven such that a dedicated transistor is activated to couple the first terminal to an intermediate voltage level.

Claims20

Dependent claims

A transmitter, comprising:

a plurality of terminals;
and
a line driver configured to transmit a signal via a terminal of the plurality of terminals, the signal being in one of three phases,
wherein the line driver includes a first transistor, a second transistor, and a third transistor, wherein a source of the first transistor, a source of the third transistor, a first end of a resistor, and a drain of the second transistor are coupled to each other, and wherein a second end of the resistor is coupled to the terminal, and
wherein the line driver is configured to:
drive the terminal towards a first voltage level by turning on the first transistor when the signal is in a first phase,
drive the terminal towards a second voltage level by turning on the second transistor when the signal is in a second phase, and
drive the terminal towards a third voltage level by turning on the third transistor when the signal is in a third phase.

5 more elements

A processor-readable storage medium having one or more instructions which, when executed by at least one processing circuit, cause the at least one processing circuit to:

obtain a signal to be transmitted via a terminal of a plurality of terminals, wherein the signal is in one of three phases;
drive the terminal towards a first voltage level by turning on a first transistor when the signal is in a first phase;
drive the terminal towards a second voltage level by turning on a second transistor when the signal is in a second phase;
and
drive the terminal towards a third voltage level by turning on a third transistor when the signal is in a third phase,
wherein a source of the first transistor, a source of the third transistor, a first end of a resistor, and a drain of the second transistor are coupled to each other, and
wherein a second end of the resistor is coupled to the terminal.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/526,332Filed 30 Jul 2019

Priority

22 Jun 2015

Published

21 Nov 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

H04L 25/493
Using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using…: by…
G06F 13/4072
Electrical coupling: drivers or receivers
H04B 1/04
Transmitters: circuits
H04B 3/52
Line transmission systems: systems for transmission between fixed stations via waveguides

Family

Application62/183,050Us provisional application · filed 22 Jun 2015

Application15/172,913Division · filed 3 Jun 2016

Application15/950,779Continuation in part · filed 11 Apr 2018

Application16/050,603Division · filed 31 Jul 2018

Application16/526,332Division

Application16/050,603Continuation in part

Application15/950,779Division

US 10,419,252 B2Related patent

US 10,833,899 B2Related patent

US 2016/0373141 A1Published application

US 2018/0234122 A1Published application

US 2018/0337698 A1Published application

US 9,998,154 B2Related patent

US 2019/0356519 A1This patent

From the US filing history. Foreign family members aren’t listed.

Low power physical layer driver topologies

Life of this patent

Low power physical layer driver topologies

Life of this patent

Abstract

Claims20