17984757. APPARATUS AND METHOD FOR ZQ CALIBRATION simplified abstract (SAMSUNG ELECTRONICS CO., LTD.)
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APPARATUS AND METHOD FOR ZQ CALIBRATION
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APPARATUS AND METHOD FOR ZQ CALIBRATION - A simplified explanation of the abstract
This abstract first appeared for US patent application 17984757 titled 'APPARATUS AND METHOD FOR ZQ CALIBRATION
Simplified Explanation
The patent application describes an apparatus and method for performing impedance control calibration without using a ZQ pin and an external resistor. The apparatus includes an output driver circuit, a register control word (RCW), and a ZQ calibration circuit.
- The output driver circuit is connected to a signal pin that interfaces with an external device.
- The RCW stores an output driver impedance parameter related to a pull-up output voltage condition of the signal pin.
- The ZQ calibration circuit is connected to the signal pin and performs calibration using a target level of the signal pin's pull-up output voltage.
- The ZQ calibration circuit also controls the termination resistance of the signal pin.
Potential applications of this technology:
- Integrated circuits and electronic devices that require impedance control calibration.
- Communication systems that rely on accurate impedance matching for optimal signal transmission.
- High-speed data transfer systems that need precise control over impedance to minimize signal reflections and distortions.
Problems solved by this technology:
- Traditional impedance control calibration methods require a dedicated ZQ pin and an external resistor, which can increase complexity and cost.
- This innovation eliminates the need for a ZQ pin and external resistor, simplifying the design and reducing manufacturing costs.
Benefits of this technology:
- Simplifies the calibration process by eliminating the need for additional pins and external components.
- Reduces manufacturing costs by eliminating the need for additional components.
- Improves the overall performance and reliability of integrated circuits and electronic devices by providing accurate impedance control.
Original Abstract Submitted
There are provided an apparatus and method for performing impedance control (ZQ) calibration without a ZQ pin and an external resistor. The apparatus includes an output driver circuit connected to a signal pin interfacing with an external device; a register control word (RCW) configured to store an output driver impedance parameter related to a pull-up output voltage (VOH) condition of the signal pin; and a ZQ calibration circuit connected to the signal pin and configured to perform calibration using a VOH target level of the signal pin and control a termination resistance of the signal pin.
