公开(公告)号：US11436144B2

公开(公告)日：2022-09-06

申请号：US16846266

申请日：2020-04-10

Applicant: Micron Technology, Inc.

Inventor： Joseph Thomas Pawlowski ,  Elliott Clifford Cooper-Balis ,  David Andrew Roberts

IPC: G06F12/0864 ,  G06F12/084 ,  G06F12/0853 ,  G06F12/02 ,  G06F9/30 ,  G06F13/16

Abstract: Described apparatuses and methods order memory address portions advantageously for cache-memory addressing. An address bus can have a smaller width than a memory address. The multiple bits of the memory address can be separated into most-significant bits (MSB) and least-significant bits (LSB) portions. The LSB portion is provided to a cache first. The cache can process the LSB portion before the MSB portion is received. The cache can use index bits of the LSB portion to index into an array of memory cells and identify multiple corresponding tags. The cache can also check the corresponding tags against lower tag bits of the LSB portion. A partial match may be labeled as a predicted hit, and a partial miss may be labeled as an actual miss, which can initiate a data fetch. With the remaining tag bits from the MSB portion, the cache can confirm or refute the predicted hit.

公开(公告)号：US11768770B2

公开(公告)日：2023-09-26

申请号：US17823480

申请日：2022-08-30

Applicant: Micron Technology, Inc.

Inventor： Joseph Thomas Pawlowski ,  Elliott Clifford Cooper-Balis ,  David Andrew Roberts

IPC: G06F12/0864 ,  G06F12/084 ,  G06F12/0853 ,  G06F12/02 ,  G06F9/30 ,  G06F13/16

CPC classification number: G06F12/084 ,  G06F9/30047 ,  G06F9/30101 ,  G06F12/0284 ,  G06F12/0853 ,  G06F12/0864 ,  G06F13/1689 ,  G06F2212/1021

Abstract: Described apparatuses and methods order memory address portions advantageously for cache-memory addressing. An address bus can have a smaller width than a memory address. The multiple bits of the memory address can be separated into most-significant bits (MSB) and least-significant bits (LSB) portions. The LSB portion is provided to a cache first. The cache can process the LSB portion before the MSB portion is received. The cache can use index bits of the LSB portion to index into an array of memory cells and identify multiple corresponding tags. The cache can also check the corresponding tags against lower tag bits of the LSB portion. A partial match may be labeled as a predicted hit, and a partial miss may be labeled as an actual miss, which can initiate a data fetch. With the remaining tag bits from the MSB portion, the cache can confirm or refute the predicted hit.

公开(公告)号：US20230061668A1

公开(公告)日：2023-03-02

申请号：US17823480

申请日：2022-08-30

Applicant: Micron Technology, Inc.

Inventor： Joseph Thomas Pawlowski ,  Elliott Clifford Cooper-Balis ,  David Andrew Roberts

IPC: G06F12/084 ,  G06F12/0853 ,  G06F12/02 ,  G06F9/30 ,  G06F13/16 ,  G06F12/0864

Abstract: Described apparatuses and methods order memory address portions advantageously for cache-memory addressing. An address bus can have a smaller width than a memory address. The multiple bits of the memory address can be separated into most-significant bits (MSB) and least-significant bits (LSB) portions. The LSB portion is provided to a cache first. The cache can process the LSB portion before the MSB portion is received. The cache can use index bits of the LSB portion to index into an array of memory cells and identify multiple corresponding tags. The cache can also check the corresponding tags against lower tag bits of the LSB portion. A partial match may be labeled as a predicted hit, and a partial miss may be labeled as an actual miss, which can initiate a data fetch. With the remaining tag bits from the MSB portion, the cache can confirm or refute the predicted hit.

公开(公告)号：US20210318958A1

公开(公告)日：2021-10-14

申请号：US16846266

申请日：2020-04-10

Applicant: Micron Technology, Inc.

Inventor： Joseph Thomas Pawlowski ,  Elliott Clifford Cooper-Balis ,  David Andrew Roberts

IPC: G06F12/084 ,  G06F12/0853 ,  G06F12/02 ,  G06F9/30 ,  G06F13/16

Abstract: Described apparatuses and methods order memory address portions advantageously for cache-memory addressing. An address bus can have a smaller width than a memory address. The multiple bits of the memory address can be separated into most-significant bits (MSB) and least-significant bits (LSB) portions. The LSB portion is provided to a cache first. The cache can process the LSB portion before the MSB portion is received. The cache can use index bits of the LSB portion to index into an array of memory cells and identify multiple corresponding tags. The cache can also check the corresponding tags against lower tag bits of the LSB portion. A partial match may be labeled as a predicted hit, and a partial miss may be labeled as an actual miss, which can initiate a data fetch. With the remaining tag bits from the MSB portion, the cache can confirm or refute the predicted hit.