Output circuit having variable output voltage swing level

Details Output circuit having variable output voltage swing level Output circuit having variable output voltage swing level

2011-05-17

2011-05-17

Tan, Vibol (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

C326S021000, C326S086000, C327S108000

Reexamination Certificate

active

07944232

ABSTRACT:
An output circuit having a variable swing level of a terminated output data signal is disclosed. The output circuit includes a control circuit configured to generate a first control signal and a second control signal in response to a voltage swing level selection signal and an output enable signal. The output circuit further includes an output driving circuit configured to, in response to the first and second control signals, perform on-die termination in an input mode and configured to control swing level of a signal output from the output circuit in an output mode.

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patent: 2005/0077953 (2005-04-01), Funaba
patent: 2005/0088150 (2005-04-01), Hamanaka
patent: 2006/0132171 (2006-06-01), Nguyen

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