公开(公告)号：US11984168B2

公开(公告)日：2024-05-14

申请号：US17835324

申请日：2022-06-08

Applicant: SanDisk Technologies LLC

Inventor： Nitin Gupta ,  Shiv Harit Mathur ,  Ramakrishnan Subramanian ,  Dmitry Vaysman

IPC: G11C7/10 ,  G11C11/16 ,  G11C16/30

CPC classification number: G11C16/30 ,  G11C7/1096 ,  G11C11/1697

Abstract: An interface circuit that can operate in toggle mode at data high transfer rates while reducing the self-induced noise is presented. The high speed toggle mode interface supplies a data signal to a data line or other transfer line by a driver circuit. The driver circuit includes a pair of series connected transistors connected between a high supply level and a low supply level, where the data line is supplied from a node between the two transistors. A resistor is connected between one or both of the transistors and one of the supply levels, with a capacitor connected between the low supply level and a node between the resistor and the transistor. The resistor helps to isolate the transistor from the supply level while the capacitor can act as current reservoir to boost the current to the transistor during data transition, reducing the noise seen by the voltage supply.

公开(公告)号：US10861508B1

公开(公告)日：2020-12-08

申请号：US16679528

申请日：2019-11-11

Applicant: SanDisk Technologies LLC

Inventor： Shiv Mathur ,  Nitin Gupta ,  Ramakrishnan Subramanian

IPC: G11C7/22 ,  G11C7/10 ,  G06F9/30 ,  G11C11/4096

Abstract: A methodology and structure for a encoding a data stat signal in the data lock signal, e.g., the data strobe signal such as DBQ. The data strobe signal can maintain the clock continuity, e.g., the rise and fall edges are at the timing signal, and the data inversion can be based on the amplitude of the data strobe signal. This allows the data set on the data lines, e.g., D0-D7, to either be non-inverted or inverted, to save power consumed in the memory device.

公开(公告)号：US20230402107A1

公开(公告)日：2023-12-14

申请号：US17835324

申请日：2022-06-08

Applicant: SanDisk Technologies LLC

Inventor： Nitin Gupta ,  Shiv Harit Mathur ,  Ramakrishnan Subramanian ,  Dmitry Vaysman

IPC: G11C16/30 ,  G11C11/16

CPC classification number: G11C16/30 ,  G11C11/1697

Abstract: An interface circuit that can operate in toggle mode at data high transfer rates while reducing the self-induced noise is presented. The high speed toggle mode interface supplies a data signal to a data line or other transfer line by a driver circuit. The driver circuit includes a pair of series connected transistors connected between a high supply level and a low supply level, where the data line is supplied from a node between the two transistors. A resistor is connected between one or both of the transistors and one of the supply levels, with a capacitor connected between the low supply level and a node between the resistor and the transistor. The resistor helps to isolate the transistor from the supply level while the capacitor can act as current reservoir to boost the current to the transistor during data transition, reducing the noise seen by the voltage supply.

公开(公告)号：US11210241B1

公开(公告)日：2021-12-28

申请号：US17068957

申请日：2020-10-13

Applicant: SANDISK TECHNOLOGIES LLC

Inventor： Nitin Gupta ,  Ashish Savadia ,  Jayanth Thimmaiah ,  Ramakrishnan Subramanian ,  Rampraveen Somasundaram ,  Shiv Harit Mathur ,  Vinayak Ghatawade ,  Siddesh Darne ,  Venkatesh Ramachandra ,  Elkana Richter

IPC: G06F13/16 ,  G11C16/26 ,  G11C16/10 ,  G11C16/04

Abstract: A data storage system includes a storage medium including plurality of memory cells, a storage controller in communication with the storage medium, an electrical interface circuitry configured to pass data via a channel disposed between the storage medium and the storage controller; and voltage training circuitry configured to train a high-level output voltage (VOH) for each of a plurality of data lines of the channel. Training the VOH includes, for each of the plurality of data lines of the channel, calibrating a pull-up driver of the storage controller against an on-die termination circuit of the storage medium, calibrating a pull-down driver of the storage controller against the pull-up driver of the storage controller, and calibrating an on-die termination circuit of the storage controller against a pull-up driver of the storage medium.