McClure, Qualey & Rodack, LLP
Ring oscillator, controlling circuit and methods for realignment
A ring oscillator is provided. The ring oscillator includes a pseudo pass-gate inverter, a third transistor, a fourth transistor and a delay chain. The pseudo pass-gate inverter includes a first transistor and a second transistor in series. The third transistor is connected in series with the pseudo pass-gate inverter. The drain of the fourth transistor is connected to an output of the pseudo pass-gate inverter. The gate of the fourth transistor is connected to the gate of the third transistor to receive the realignment signal. The delay chain includes a plurality of delay cells. An input of the delay chain is connected to the output of the pseudo pass-gate inverter. When the realignment signal is in a realignment state, the third transistor is turned off, the fourth transistor is turned on.
TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
H
H03K
inventional
Tsung-Hsien Chih-Hsien Cheng-Hsiang Ruey-Bin
Tsai Chang Hsieh Sheen