Patent ID: 8169268
Filing Date: 2012-05-01
Classification: H03K

Abstract:
1. An oscillation circuit, comprising: an oscillation unit including a plurality of inverters and a transmission unit and configured to perform signal transmission between first and second nodes such that each of the inverters performs an oscillation operation to generate clock signals having different phases, when a control signal is activated, and latch a clock signal of the second node and cut off the signal transmission between the first and second nodes to stop the oscillation operations of the inverters, when the control signal is deactivated; and a control unit configured to activate the control signal when an oscillation enable signal is activated, and deactivate the control signal using a clock signal output from an inverter connected to the second node among the plurality of inverters and one of clock signals of which phases lead that of a clock signal of the first node, when the oscillation enable signal is deactivated, wherein the first node is directly connected to input terminal of the transmission unit and the second node is directly connected to output terminal of the transmission unit.