Phase detecting circuit and clock generating apparatus...

Details Phase detecting circuit and clock generating apparatus... Phase detecting circuit and clock generating apparatus...

2011-05-24

2011-05-24

Tse, Young T. (Department: 2611)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

C331S025000

Reexamination Certificate

active

07949081

ABSTRACT:
A phase detecting circuit includes a first node that outputs a pull-up control signal, a second node that outputs a pull-down control signal, an initializing unit that initializes voltage levels of the first and second nodes in response to a pre-charge signal, a data input unit to which receives a receiver data, a phase comparison unit that compares a phase of a receiver clock and a phase of the receiver data input to the data input unit to control the voltage levels of the first and second nodes, and a charging/discharging unit that charges or discharges electric charges that are applied to the first and second nodes.

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