Method for transmission and reception of a data signal on a line pair, as well as a transmission and reception circuit for this purpose
AssigneeInfineon Technologies AG
InventorPeter Poechmueller
Life of this patent
Estimating the term…
Abstract
Apparatuses and methods for transmitting and receiving a data signal on a line pair having a first transmission line and a second transmission line are provided. In one embodiment, a data signal which represents the data to be transmitted by means of a sequence of first and second signal levels is applied to the first transmission line, and a reference signal which changes between a first and a second reference level only when a level change between the first and the second signal level is suppressed between two successive signal levels of the data signal on the first transmission line is applied to the second transmission line.
Claims31
A method for transmitting a data signal on a line pair having a first transmission line and having a second transmission line, comprising:
- applying to the first transmission line the data signal which represents the data to be transmitted by means of a sequence of first and second signal levels;
- and
- applying a reference signal on the second transmission line, wherein the reference signal changes between a first reference level and a second reference level only when a level change between the first signal level and the second signal level of the data signal is suppressed between two successive signal levels of the data signal on the first transmission line.
A method for receiving a data signal via a line pair having a first transmission line and a second transmission line, comprising:
- receiving, on the first transmission line, the data signal which represents the data to be transmitted as a sequence of first and second signal levels;
- receiving a reference signal on the second transmission line;
- determining a data item which is transmitted by the data signal as a function of a difference between the signal level of the data signal and a reference level of the reference signal;
- and
- producing the data item as a valid data item as a function of a level change occurring between the signal levels of the data signal and occurring between the reference levels of the reference signal.
A transmission circuit for transmitting a data signal on a line pair having a first transmission line and a second transmission line, comprising:
- a first driver circuit which applies the data signal to the first transmission line, wherein the data signal represents the data to be transmitted by means of a sequence of first and second signal levels;
- a second driver circuit which applies a reference signal having a first reference level and a second reference level to the second transmission line;
- and
- a control unit, which drives the second driver circuit such that the reference signal changes between the first and second reference levels only when a level change between the first and the second signal level is suppressed between two successive data items when the data signal is applied to the first transmission line.
A reception circuit for receiving a data signal via a line pair having a first transmission line and a second transmission line, comprising:
- a first input circuit connected to the first transmission line to receive the data signal, wherein the data signal represents the data to be transmitted by means of a sequence of first and second signal levels;
- a second input circuit, connected to the second transmission line to receive a reference signal;
- an evaluation circuit configured to:
- determine a data item of the data signal as a function of the difference between an applied signal level of the data signal and an applied reference signal;
- and
- produce the data item as a valid data item as a function of at least one of:
- a level change occurring between the signal levels of the data signal;
- and
- a level change occurring between the signal levels of the reference levels of the reference signal.
An integrated memory circuit comprising one or more transmission circuits, each transmission circuit configured to transmit a data signal on a line pair having a first transmission line and a second transmission line, each transmission circuit comprising:
- a first driver circuit which applies the data signal to the first transmission line, wherein the data signal represents the data to be transmitted by means of a sequence of first and second signal levels;
- a second driver circuit which applies a reference signal having a first reference level and a second reference level to the second transmission line;
- and
- a control unit, which drives the second driver circuit such that the reference signal changes between the first and second reference levels only when a level change between the first and the second signal level is suppressed between two successive data items when the data signal is applied to the first transmission line.
An integrated memory circuit comprising a plurality of reception circuits, each reception circuit configured for receiving a data signal via a line pair having a first transmission line and a second transmission line, wherein each reception circuit comprises:
- a first input circuit connected to the first transmission line to receive the data signal, wherein the data signal represents the data to be transmitted by means of a sequence of first and second signal levels;
- a second input circuit, connected to the second transmission line to receive a reference signal;
- an evaluation circuit configured to:
- determine a data item of the data signal as a function of the difference between an applied signal level of the data signal and an applied reference signal;
- and
- produce the data item as a valid data item as a function of at least one of:
- a level change occurring between the signal levels of the data signal;
- and
- a level change occurring between the signal levels of the reference levels of the reference signal.
Dependencies are inferred from the claim text.