Xilinx, Inc.

Milind Goel

Hari Bilash Dubey

Sabarathnam Ekambaram

Vss Prasad Babu Akurathi

Sasi Rama Subrahmanyam Lanka

Sasi Rama S Lanka

Venkata Siva Satya Prasad Babu Akurathi

A disclosed circuit arrangement detects the supply voltage level to the 'device' (SoC, chip, SiP, etc.) and adjusts bias voltages to receiver and transmitter circuits of the device to levels suitable for the device in response to the supply voltage ramping-up during a power-on reset ('POR') sequence. The circuitry holds the receiver output at a constant logic value while the supply voltage is ramping up and the POR signal is asserted. The disclosed circuitry also protects the transceiver as the voltage domain of the input signal is unknown and the voltage between any two terminals of a transistor of the transceiver cannot exceed a certain level.

Voltage sensing and biasing for wide supply range integrated circuit transceivers

A circuit for implementing an input/output connection in an integrated circuit device is described. The circuit comprises a pull-up circuit comprising a first plurality of transistors coupled in series, wherein a gate of a first transistor of the first plurality of transistors is configured to receive a first dynamic bias signal; a pull-down circuit comprising a second plurality of transistors coupled in series, the pull-down circuit being coupled to the pull-up circuit at an output node, wherein a gate of a first transistor of the second plurality of transistors is configured to receive a second dynamic bias signal; and an input/output contact coupled to the output node. A circuit for implementing an input/output connection in an integrated circuit device including a splitter circuit for receiving an input signal on an input pad is also described. A method of implementing an input/output connection in an integrated circuit device is also described.

Circuit for and method of implementing IO connections in an integrated circuit device

A method, non-transitory computer readable medium, and circuit for wide range voltage translation using monostable multi-vibrator feedback are disclosed. The circuit includes a bias generation segment and a voltage translator to shift a voltage level of a signal from a first voltage domain of a digital system to a second voltage domain of the digital system. The bias generation segment is configured to detect a voltage range of the second voltage domain and to configure the voltage translator responsive to the voltage range. The voltage translator is configured to directly shift the voltage level of the signal to the second voltage domain. The second voltage domain has voltage levels that are higher than a maximum voltage that can be tolerated by transistors in the digital system.

Method and apparatus for wide range voltage translation

An example receiver includes: a pad splitter circuit coupled to a pad, the pad splitter circuit configured to generate a first logic signal and a second logic signal; a wide-range receiver coupled to the pad splitter circuit to receive the first and second logic signals, the wide-range receiver comprising a combination of a first Schmitt trigger receiver and a second Schmitt trigger receiver; a control circuit coupled to the pad splitter circuit and the wide-range receiver; and a bias generator circuit coupled to the pad splitter circuit and the wide-range receiver.

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Hyderabad Telangana, India

Milind Goel