Programmable phase shift circuitry

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing

Reexamination Certificate

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Details

C327S147000, C327S150000, C327S159000, C331S025000

Reexamination Certificate

active

07109765

ABSTRACT:
A circuit provides a programmable phase shift feature, where the phase shift is programmably selectable by a user. This circuitry may be incorporated in a programmable logic device (PLD) or field programmable gate array (FPGA) to provide additional programmability features. The programmable phase shift circuitry may be implemented within a phase locked loop (PLL) or delay locked loop (DLL) circuit.

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“ORCA® OR3Cxx (5 V) and OR3Txxx (3.3 V) Series Field-Programmable Gate Arrays,” Lucent Technologies Microelectronics Group, Preliminary Data Sheet, Nov. 1997.

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