Micron Technology Incorporated

Dustin James Carter

Suresh Rajgopal

Matthew David Rowley

Jeremy Wayne Butterfield

Robert W Strong

Steven R Eskildsen

David Matthew Springberg

Chulbum Kim

Henrico L Yahja

Sean E Nerich

Neil Levine

Sundararajan Sankaranarayanan

Xiangyu Tang

Jose Rey C De Luna

Aspects of the present disclosure configure a system component, such as a memory sub-system controller, to provide a configurable buffer device. The configuration buffer device is coupled between a processing device and a set of memory components. The configurable buffer device can be configured based on configuration data to couple a first quantity of front-side channels to a second quantity of back-side channels. The configuration data can be received from an external source, such as the processing device, or can be stored in a configuration register at manufacture. The configuration data can also be generated or determined based on one or more pins of the buffer device that control how many font-side channels and how many back-side channels to enable/disable.

Configurable buffered I/O for memory systems

A memory sub-system includes a memory sub-system controller comprising a plurality of controller channels, one or more memory devices, each of which comprises a respective plurality of memory dies, and a channel switch circuit coupled between the plurality of the controller channels and a plurality of memory channels of the one or more memory devices, where each memory channel corresponds to a respective one of the plurality of memory dies of one of the memory devices, the channel switch circuit comprising command processing logic configured to: receive, from the memory sub-system controller, a plurality of channel mappings, each of which identifies a particular one of the controller channels and a particular one of the memory channels, and route data from each controller channel to a respective one of the memory channels that is associated with the controller channel by a respective one of the channel mappings.

Accessing memory devices via switchable channels

An input/output (I/O) command referencing a logical address of a memory sub-system is received by an active input/output expander (AIOE). The I/O command is received from a memory sub-system controller via the AIOE. The AIOE identifies a physical block address corresponding to the logical block address. The AIOE identifies, among a plurality of memory devices, a memory device associated with the physical block address. The AIOE converts the I/O command received via the serial interface to a parallel interface compliant I/O command. The AIOE sends the parallel interface compliant I/O command to the memory device.

Serial interface for an active input/output expander of a memory sub-system

A value setting associated with one or more parameters of a host-side interface and a memory-side interface of an input/output (I/O) expander is configured to enable Open NAND Flash Interface (ONFI)-compliant communications between a host system and a target memory die of a memory sub-system. The I/O expander processes one or more ONFI-compliant communications between the host system and the target memory die, wherein the one or more ONFI-compliant communications relate to execution of a memory access operation.

Active input/output expander of a memory sub-system

Disclosed is a power management integrated circuit with embedded address resolution protocol functionality. In one embodiment, a device is disclosed comprising a data storage device; and an address resolution protocol (ARP) state machine communicatively coupled to the data storage device and included within a power management integrated circuit (PMIC), the ARP state machine configured to assign an address to the data storage device and validate requests for data stored in the data storage device received over a bus.

Power management integrated circuit with embedded address resolution protocol circuitry

A variety of applications can include apparatus and/or methods of controlling a secure boot mode for a memory system. In an embodiment, a system includes a memory component and a processing device, where the processing device is configured to control a boot process for the system to operate the memory component and perform a cryptographic verification with a host to conduct an authentication of the host. The processing device can interact with the host, in response to the authentication, to receive a setting to control the boot process in a secure boot mode. The processing can interact with another processing device of the system to store the setting and to receive a secure boot signal from the other processing device, where the secure boot signal is a signal to assert or de-assert the secure boot mode depending on a value of the setting. Additional apparatus, systems, and methods are disclosed.

Secure boot via system and power management microcontroller

A memory sub-system includes a power management integrated circuit (PMIC) compatible with operation at an uppermost PMIC supply voltage that is lower than a primary supply voltage of the memory sub-system. The PMIC is configured to output multiple voltages for operation of the memory sub-system based on a PMIC supply voltage. The memory sub-system further includes a capacitive voltage modifier (CVM) coupled to the PMIC. The CVM is configured to receive the primary supply voltage of the memory sub-system as an input and provide a first modified primary supply voltage (MPSV) to the PMIC as the PMIC supply voltage, where the first MPSV is not higher than the uppermost PMIC supply voltage.

Capacitive voltage modifier for power management

A selection device includes a multiplexer component, an input channel configured to couple at least the multiplexer to the memory sub-system controller, and a set of output channels coupled to the multiplexer component. Each of the set of output channels is further coupled to a respective memory device of a set of memory devices. Each of the set of output channels is configured to transmit data between the multiplexer component and the respective memory device. The selection device further includes a decoder component that is coupled to the input channel and each of the set of memory devices. The decoder component is configured to receive, from the memory sub-system controller via the input channel, a signal including a first signal portion configured to enable the decoder component and a second signal portion configured to identify a particular output channel of the set of output channels that is to transmit the data between the multiplexer component and the corresponding memory device. The decoder component is to decode the received signal and transmit the decoded signal to each of the set of memory devices. The decoded signal is to enable the transmission of the data between the multiplexer and the corresponding memory device via the particular output channel.

Selection component that is configured based on an architecture associated with memory devices

A read command to read a target memory die of a memory sub-system is received from a host system via a host-side interface of an active input/output (I/O) expander. The active I/O expander identifies a page address corresponding to the target memory die and decodes the read command to send to a memory stack associated with the page address corresponding to the target memory die. Read data is received via a memory-side interface of the active I/O expander from the memory stack including the target memory die. A signal conditioning operation is performed on the read data to generate conditioned read data. The active I/O expander sends, via the host-side interface, the conditioned read data to the host system.

A selection device can be operatively coupled with non-volatile memory devices. Enable signals that are based on an architecture of non-volatile memory devices can be received. Data can be transmitted to the non-volatile memory devices based on the enable signals that are based on the architecture of the non-volatile memory devices.

Growing community of inventors

Placerville, CA, United States of America

Dustin James Carter