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Output impedance calibration for signaling

An output impedance, resistive technology, applied in the field of signaling output impedance calibration, can solve problems such as non-volatility

Active Publication Date: 2019-10-01
MICRON TECH INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

FeRAM can use a device architecture similar to volatile memory, but can have non-volatile properties due to the use of ferroelectric capacitors as storage devices

Method used

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  • Output impedance calibration for signaling
  • Output impedance calibration for signaling
  • Output impedance calibration for signaling

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Embodiment Construction

[0018] Some memory devices may transmit data across a large number of channels using multiple signaling schemes (eg, multi-level signaling). Such signaling schemes may be configured to increase the data transfer rate of the communicated data without increasing the data transfer frequency and / or transmit power. An example of one type of signaling scheme (specifically, a multi-level signaling scheme) may be pulse amplitude modulation (PAM4, PAM8, etc.), where the unique symbols of a multi-level signal may be configured to represent multiple data bits.

[0019] In the PAM4 signaling scheme, for example, there may be a peak-to-peak voltage difference between the various amplitudes of the transmitted data. For example, a smaller peak-to-peak tolerance may result from additional noise and thus additional errors in the transmitted data. Alternatively, for example, a larger peak-to-peak tolerance may result from reduced noise and thus less error in the data. Therefore, a large and u...

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Abstract

Output impedance calibration for signaling. Methods, systems, and devices for output impedance calibration for signaling are described. Techniques are provided herein to adjust impedance levels associated with data transmitted using signaling and related techniques. In some cases, the signaling may be multi-level signaling. Such signaling may be configured to increase a data transfer rate withoutincreasing the frequency of data transfer and / or a transmit power of the communicated data.

Description

[0001] cross reference [0002] This patent application claims priority to US patent application Ser. No. 15 / 934,663, filed March 23, 2018, by Lin, entitled "OUTPUT IMPEDANCE CALIBRATION FOR SIGNALING," The aforementioned US patent application is assigned to the assignee of the present application and is expressly incorporated herein by reference in its entirety. technical field [0003] The technical field relates to signaling output impedance calibration. Background technique [0004] The following relates generally to adjusting the output from a partition of a driver, and more specifically to signaling output impedance calibration. [0005] Memory devices are widely used in various electronic devices such as computers, wireless communication devices, cameras, digital displays, etc. to store information. Information is stored by programming different states of the memory device. For example, a binary device has two states, typically represented by a logic "1" or a logi...

Claims

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Application Information

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IPC IPC(8): G11C8/08
CPCG11C8/08H03K19/0005G11C2207/2254G11C7/1051G11C5/063G11C29/025G11C7/1048G11C29/028H03K19/0175G11C29/02H03K19/018521H03K19/018585G11C29/022
Inventor 林芬
Owner MICRON TECH INC