Oscillator and operation method thereof
Patent Information
- Authority / Receiving Office
- TW · TW
- Patent Type
- Applications
- Current Assignee / Owner
- REALTEK SEMICON CORP
- Filing Date
- 2025-01-03
- Publication Date
- 2026-07-16
Smart Images
Figure TWG2TA001067756_001 
Figure TWG2TA001067756_002 
Figure TWG2TA001067756_003
Abstract
Claims
1. An oscillator comprising: a logic circuit for receiving an enable signal and a feedback signal and generating a first control signal based on the enable signal and the feedback signal; and an oscillation circuit coupled to the logic circuit for generating the feedback signal and an oscillation output signal based on the first control signal, wherein the feedback signal is different from the oscillation output signal.
2. The oscillator as claimed in claim 1, wherein the oscillation circuit comprises: a first resistor coupled between the logic circuit and a relay node; a first capacitor coupled between the logic circuit and the relay node, wherein a relay voltage is generated at the relay node; and a second capacitor coupled between the relay node and a ground terminal.
3. The oscillator as claimed in claim 2, wherein the logic circuitry includes: an inverting gate for performing an inverting operation on the enable signal and the feedback signal to generate the first control signal.
4. The oscillator as claimed in claim 3, wherein the oscillation circuit further comprises: a first inverter coupled between the inverter and the first resistor.
5. The oscillator as claimed in claim 4, wherein the oscillation circuit further comprises: a second inverter coupled to the relay node and configured to perform a first inversion operation on the relay voltage to generate the feedback signal; and a third inverter coupled to the inverter and configured to perform a second inversion operation on the first control signal to generate the oscillation output signal.
6. The oscillator as claimed in claim 2, wherein the logic circuitry comprises: a first inverter for performing a first inversion operation on the enable signal to generate an inverted enable signal; a first NOR gate for performing a first NOR operation on the inverted enable signal and the feedback signal to generate the first control signal; and a second NOR gate for performing a second NOR operation on the inverted enable signal and the first control signal to generate a second control signal to the relay node.
7. The oscillator as claimed in claim 6, wherein the oscillation circuit comprises: a second inverter coupled to the first inverse-OR gate; and a third inverter coupled between the second inverter and the first capacitor.
8. The oscillator as claimed in claim 7, wherein the oscillation circuit further comprises: a fourth inverter coupled to the relay node and configured to perform a second inversion operation on the relay voltage to generate the feedback signal; a fifth inverter coupled to the first inverse gate and configured to perform a third inversion operation on the first control signal to generate an oscillation signal; and a sixth inverter coupled to the fifth inverter and configured to perform a fourth inversion operation on the oscillation signal to generate the oscillation output signal.
9. A method of operating an oscillator, comprising: receiving an enable signal and a feedback signal via a logic circuit; generating a first control signal via the logic circuit based on the enable signal and the feedback signal; and generating the feedback signal and an oscillation output signal via an oscillation circuit based on the first control signal, wherein the feedback signal is different from the oscillation output signal.
10. A method of operating an oscillator as claimed in claim 9, wherein the oscillating circuit comprises: a first resistor coupled between the logic circuit and a relay node; a first capacitor coupled between the logic circuit and the relay node, wherein a relay voltage is generated at the relay node; and a second capacitor coupled between the relay node and a ground terminal.