Configuring and selecting a duty cycle for an output driver

Details Configuring and selecting a duty cycle for an output driver Configuring and selecting a duty cycle for an output driver

2005-11-01

2005-11-01

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S298000

Reexamination Certificate

active

06960952

ABSTRACT:
The pre-driver of an output driver is calibrated so as to generate output signals having a specified duty cycle. During calibration, a closed loop is utilized to decrease the differences between the common mode voltage of the output signal and a reference voltage. Calibration data is be stored in registers so that the output driver can be readily configured for one of a plurality of signaling types, each having a respective duty cycle. Additionally, a process, voltage and temperature (PVT) detector can be utilized so that calibration of the pre-driver tracks with process, voltage and temperature variations of the integrated circuit in which the output driver resides.

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patent: PCT/US2004/021367 (2004-12-01), None
patent: WO 2005/027346 (2005-03-01), None

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