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US 9,870,331 B2Granted
Interface circuit
AssigneeInfineon Technologies AG
InventorPeter Amreich
Life of this patent
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Abstract
Devices and methods are provided where a first signal and a second signal are received. The second signal may be a single-ended signal and may be selectively converted to a differential signal based on a type of the first signal.
Claims20
An interface device, comprising:
- a first input to receive a first signal,
- a second input to receive a second signal,
- a single-ended-to-differential converter coupled to the second input to provide a differential version of the second signal, and
- a selection circuit adapted to selectively cause either the single-ended second signal or the differential version of the second signal to be used for further processing depending of a type of the first signal, wherein the selection circuit is adapted to select the single-ended second signal when the first signal is a single-ended signal and the differential version of the second signal when the first signal is a differential signal.
1 more element
A method, comprising:
- receiving a first signal,
- receiving a second signal as a single-ended signal, and
- selectively converting the second signal to a differential signal depending on a type of the first signal, wherein the selectively converting comprises converting the second signal to a differential signal if the first signal is a differential signal, and using the second signal as single-ended signal if the first signal is a single-ended signal.
A device, comprising:
- a pair of differential clock inputs,
- a single-ended clock input,
- a single-ended further input,
- a first amplifier coupled to the differential clock input,
- a first Schmitt trigger coupled to the single-ended clock input,
- a single-ended-to-differential converter coupled to the single-ended further input,
- a second amplifier coupled to an output of the single-ended-to-differential converter,
- a second Schmitt trigger coupled to the single-ended further input, and
- logic circuitry to selectively provide either a first output signal based on an output of the first amplifier and a second output signal based on an output of the second amplifier, or a first output signal based on an output signal of the first Schmitt trigger and a second output signal based on an output of the second Schmitt trigger at device output terminals.
6 more elements
A method, comprising:
- receiving a first signal,
- receiving a second signal as a single-ended signal,
- selectively converting the second signal to a differential signal depending on a type of the first signal, wherein the selectively converting comprises converting the second signal to a differential signal if the first signal is a differential signal, and using the second signal as single-ended signal if the first signal is a single-ended signal,
- wherein the first signal comprises a clock signal, and wherein the method further comprises sampling the second signal based on the first signal.
1 more element
Dependencies are inferred from the claim text.