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US 2022/0045719 A1Published application
Configurable, power supply voltage referenced single-ended signaling with esd protection
AssigneeRambus Inc.
InventorsJohn W. POULTON, Frederick A. WARE, Carl W. WERNER
Life of this patent
Estimating the term…
Abstract
A single-ended data transmission system transmits a signal having a signal voltage that is referenced to a power supply voltage and that swings above and below the power supply voltage. The power supply voltage is coupled to a power supply rail that also serves as a signal return path. The signal voltage is derived from two signal supply voltages generated by a pair of charge pumps that draw substantially same amount of current from a power supply.
Claims21
(canceled)
A circuit to be coupled to a power supply, comprising:
- first and second terminals, the second terminal to be at a power supply voltage after being coupled to the power supply, the circuit being formed on a semiconductor substrate to be mounted on a packaging substrate having a power plane and the second terminal is to be connected to the power plane;
- and
- a receiver configured to receive a signal via the first terminal, the signal having a voltage level that is referenced to the power supply voltage and that swings substantially symmetrically above and below the power supply voltage.
A circuit to be coupled to a power supply, comprising:
- a first terminal and a second terminal, the second terminal to be at a power supply voltage after being coupled to the power supply;
- a receiver to receive a signal via the first terminal, the signal to have a voltage level that is referenced to the power supply voltage and that swings substantially symmetrically above and below the power supply voltage, the receiver including a receiver amplifier including a first input and a second input coupled to the first terminal and the second terminal, respectively.
A method, comprising:
- receiving, at a first terminal and from a power plane on a packaging substrate, a power supply voltage;
- receiving, at a second terminal, a signal having a voltage level that is referenced to the power supply voltage and that swings substantially symmetrically above and below the power supply voltage.
Dependencies are inferred from the claim text.