Qualcomm Incorporated

Telefonaktiebolaget Lm Ericsson (publ)

Dexter Tamio Chun

Yanru Li

Jungwon Suh

Jung Pill Kim

Deepti Vijayalakshmi Sriramagiri

Michael Hawjing Lo

Richard Alan Stewart

Haw-Jing Lo

Vaishnav Srinivas

Stephen A Molloy

Alain Artieri

Subrato Kumar De

David Ian West

Laurent Rene Moll

Michael J Brunolli

Anand Srinivasan

Hyunsuk Shin

Xiangyu Dong

Victor Adrian Chiriac

Ravi Palakodety

Bohuslav Rychlik

Azzedine Touzni

Jun Zhang

Thomas Zeng

Gheorghe Calin Cascaval

Ali Taha

Shyamkumar Thoziyoor

Sumeet Singh Sethi

Mosaddiq Saifuddin

Olivier Alavoine

John D Eaton

Xavier Loic Leloup

Vinodh Ramesh Cuppu

Isaac Berk

Ajit B Patil

Vikram Arora

Steve Hicks

Bob Knight

Kc Lee

Dave Walker

Ravindra Kumar

Asim Muhammad Muneer

Seung Hyuk Kang

Shiqun Gu

Lalan Jee Mishra

Manoj Madhukar Deshpande

Tirdad Sowlati

Hee Jun Park

Alexander Gantman

Suresh Kumar Venkumahanti

Eric W Mahurin

Taehyun Kim

Sungryul Kim

Oliver Michaelis

Rahul Gulati

Animesh Datta

Jack K Wolf

Christopher Kong Yee Chun

Serag Gadelrab

James H Thompson

Michael Drop

Shree Krishna Pandey

Jeffrey Hao Chu

Urmi Ray

Alex Tu

Jason Alan Thurston

Pratik Patel

Mohammad Reza Kakoee

Narasimhan Venkata Agaram

Ramesh Ramaswamy

Steven Haehnichen

Suryanarayana China Chittuluri

William Kimberly

Saurabh Gorecha

Naresh Kumar Sharma

Pravin Kumar

Larry A Bassel

Youmin Yu

Cuneyt Fitoz

Dwight Gordon

Yu-Hsiang Huang

Kou-Chun Lee

Robert Knight

Ian Huang

Valmick Guha

Jason Chan

Timothy Gold

Ranjith Kumar Narahari

Gustavo Serena

Methods and apparatuses for a system error-correction code function are presented. The apparatus includes a memory configured to communicate with a host via at least one data connection and at least one non-data connection. The memory includes a memory array. The memory array includes a first portion and a second portion. The memory is further configured to, in a first mode, store and output data in the first portion and the second portion of the memory array. The first portion is addressable by a first address, and the second portion is addressable by a second address. The memory is further configured to, in a second mode, receive ECC of the data from the host via the at least one non-data connection, store the data in the first portion of the memory array, and store the ECC of the data in the second portion of the memory array based on the first address.

System and memory with configurable metadata portion

System and memory with configurable error-correction code (ECC) data protection and related methods

Methods and apparatuses for improve data clock to reduce power consumption are presented. The apparatus includes a memory configured to receive a data clock from a host via a link and to synchronize the data clock with the host. The memory includes a clock tree buffer configured to toggle based on the data clock to capture write data or to output read data and a command decoder configured to detect a data clock suspend command while the data clock is synchronized between the host and the memory. The clock tree buffer is configured to disable toggling based on the data clock in response to the command decoder detecting the data clock suspend command. the host includes a memory controller configured to provide a data clock suspend command to the memory via the link while the data clock is synchronized between the host and the memory.

Enhanced data clock operations in memory

Various embodiments may include methods and systems for providing secure in-memory device access of a memory device by a system-on-a-chip (SOC). Various methods may include receiving a configuration message from the SOC for configuring a memory access control of the memory device, and configuring the memory access control based on the configuration message. Various embodiments may include receiving an access request message from the SOC requesting access to a memory base address and a memory access range of a memory cell array of the memory device, wherein the access request message includes a read/write operation. Various embodiments may include comparing the access request message with the configured memory access control to determine whether the access request message is allowable. Various embodiments may further include performing the read/write operation in response to determining that the access request message is allowable.

Methods and apparatus for in-memory device access control

In a conventional memory subsystem, a memory controller issues explicit refresh commands to a DRAM memory device to maintain integrity of the data stored in the memory device when the memory device is in an auto-refresh mode. A significant amount of power may be consumed to carry out the refresh. To address this and other issues, it is proposed to allow a partial refresh in the auto-refresh mode in which the refreshing operation may be skipped for a subset of the memory cells. Through such selective refresh skipping, the power consumed for auto-refreshes may be reduced. Operating system kernels and memory drivers may be configured to determine areas of memory for which the refreshing operation can be skipped.

Partial refresh technique to save memory refresh power

Transferring data between memories may include reading data associated with a memory transfer transaction from a first memory, determining whether a bypass indication associated with the memory transfer transaction is asserted, and transferring the data from the first memory to a second memory. The transferring may include bypassing the first-processing if the bypass indication is asserted. The transferring may further include bypassing second-processing the data if the bypass indication is asserted. Following bypassing the second-processing, the data may be stored in the second memory.

Protected data streaming between memories

Methods and apparatuses for a system error-correcting code function are presented. The apparatus includes a memory configured to communicate with a host. The memory includes a memory array configured to store data. The memory is configured to provide the data stored in the memory array to the host in performing computing functions and configured to provide an error-correction code (ECC) associated with the data to the host. The ECC is not stored in the memory array in a first configuration of the memory and is stored in the memory array in a second configuration of the memory.

Memory with system ECC

Methods and apparatuses for to memories using dynamic voltage scaling are presented. The apparatus includes memory configured to communicate with a host. The memory includes a peripheral portion and a memory array. The memory is further configured to receive, from at least one power management circuit, a first supply voltage and a second supply voltage. The memory further includes a switch circuit. The switch circuit is configured to selectively provide the first supply voltage and the second supply voltage to the peripheral portion. The first supply voltage is static and has a first voltage range. The second supply voltage has a low second voltage range and a high second voltage range.

Memory with dynamic voltage scaling

Disclosed are techniques for generating a parity check matrix representing an error correcting code (ECC) for protecting a plurality of bits of a message. In an aspect, a method includes initializing a matrix M to store selected three-bit codes, selecting a first three-bit code from a set L of three-bit combinations of a number of bits n of the ECC that minimizes a sum of squared row weights of each row of the matrix M, comparing the first three-bit code with each of a plurality of error syndromes, and calculating, based on no comparison of the first three-bit code with each of the plurality of error syndromes, new error syndromes and storing the new error syndromes, wherein the new error syndromes are calculated by comparing the first three-bit code with each three-bit code in the matrix M, and storing the first three-bit code in the matrix M.

Optimized error-correcting code (ECC) for data protection

Various embodiments of methods and systems for a modem-directed application processor boot flow in a portable computing device ('PCD') are disclosed. An exemplary method includes an application processor that transitions into an idle state, such as a WFI state, for durations of time during a boot sequence that coincide with processing by a DMA engine and/or crypto engine. That is, the application processor may 'sleep' while the DMA engine and/or crypto engine process workloads in response to instructions they received from the application processor.

System and method for modem-directed application processor boot flow

Systems, methods, and computer programs are disclosed for providing coincident memory bank access. One embodiment is a memory device comprising a first bank, a second bank, a first bank resource, and a second bank resource. The first bank has a first set of bitlines for accessing a first set of rows in a first memory cell array. The second bank has a second set of bitlines for accessing a second set of rows in a second memory cell array. The first bank resource and the second bank resource are selectively connected to the first set of bitlines or the second set of bitlines via a cross-connect switch.

Coincident memory bank access via cross connected shared bank resources

Various additional and alternative aspects are described herein. In some aspects, the present disclosure provides a method of controlling a memory of a computing device by an adaptive memory controller. The method includes collecting usage data from the computing device over a first bin, wherein the first bin is associated with a first weight, wherein the first weight is indicative of one or more of a first partial array self-refresh (PASR) setting a first partial array auto refresh (PAAR) setting and a first deep power down (DPD) setting. The method further includes associating the collected data with a second weight, adapting the first bin based on the second weight, wherein the second weight is indicative of one or more of a second PASR, PAAR, and DPD setting. The method further includes controlling the memory during the next first bin based on the second weight.

Adaptive power management of dynamic random access memory

Errors can be introduced when data is transferred over a link between two entities such as between a host and a memory. Link error protection schemes can be implemented to detect and correct errors that occur on the link to enhance transmission reliability. However, these benefits are not without costs since such protection schemes increase both latency and power consumption. In one or more aspects, it is proposed to dynamically adjust the level of link error protection applied to match any change in the operating environment. For example, likelihood of link errors strongly correlates with the link speed. If the link speed is increased, a greater level of link error protection can be applied to counteract the increase in the link errors. If the link speed is decreased, the level of protection can be decreased so that latency and power consumption penalties can be minimized.

Dynamic link error protection in memory systems

Growing community of inventors

San Diego, CA, United States of America

Dexter Tamio Chun