公开(公告)号：US20240095175A1

公开(公告)日：2024-03-21

申请号：US17949607

申请日：2022-09-21

Applicant: Arm Limited

Inventor： Yoav Asher LEVY ,  Elad KADOSH ,  Jakob Axel FRIES ,  Lior-Levi BANDAL

IPC: G06F12/0884

CPC classification number: G06F12/0884 ,  G06F2212/1021

Abstract: A cache is provided having a plurality of entries for storing data. In response to a given access request, lookup circuitry performs a lookup operation in the cache to determine whether one of the entries in the cache is allocated to store data associated with the memory address indicated by the given access request, with a hit indication or a miss indication being generated dependent on the outcome of that lookup operation. During a single lookup period, the lookup circuitry is configured to perform lookup operations in parallel for up to N access requests. In addition, allocation circuitry is provided that is able to determine, during the single lookup period, at least N candidate entries for allocation from amongst the plurality of entries, and to cause one of the candidate entries to be allocated for each of the up to N access requests for which the lookup circuitry generates a miss indication.

公开(公告)号：US20220318138A1

公开(公告)日：2022-10-06

申请号：US17657498

申请日：2022-03-31

Applicant: Arm Limited

Inventor： Edvard FIELDING ,  Jian WANG ,  Jakob Axel FRIES ,  Carmelo GILIBERTO

IPC: G06F12/06

Abstract: There is disclosed a method of storing an encoded block of data in memory comprising encoding a block of data elements and determining a memory location (26) at which the encoded block of data is to be stored. The memory location (26) at which the encoded block of data is stored is then indicated in a header (406) for the encoded block of data by including in the header a memory address value (407) together with a modifier value (500) representing a modifier that is to be applied to the memory address value (407) when determining the memory location (26). When the encoded block of data is to be retrieved, the header (406) is read and processed to determine the memory location (26).

公开(公告)号：US20170076419A1

公开(公告)日：2017-03-16

申请号：US15254079

申请日：2016-09-01

Applicant: ARM LIMITED

Inventor： Jakob Axel FRIES ,  Henrik Nils-Sture OLSSON ,  Oskar FLORDAL ,  Sharjeel SAEED

IPC: G06T1/20 ,  H04N19/426 ,  H04N19/44 ,  G06T1/60

CPC classification number: G06T1/20 ,  G06T1/60 ,  H04N19/426 ,  H04N19/436

Abstract: An interface apparatus and method of operating the same are provided. The interface apparatus receives an uncompressed image data read request using a first addressing scheme at a first bus interface and transmits a compressed image data read request using a second addressing scheme from a second bus interface. Address translation circuitry translates between the first addressing scheme and the second addressing scheme. Decoding circuitry decodes a set of compressed image data received via the second bus interface to generate the set of uncompressed image data which is then transmitted via the first bus interface. The use of a second addressing scheme and image data compression is thus transparent to the source of the uncompressed image data read request, and the interface apparatus can therefore be used to connect devices which use different addressing schemes and image data formats, without either needing to be modified.

Abstract translation: 提供了一种操作该接口装置和方法。 接口装置在第一总线接口处使用第一寻址方案接收未压缩的图像数据读取请求，并且使用第二寻址方案从第二总线接口发送压缩图像数据读取请求。 地址转换电路在第一寻址方案和第二寻址方案之间转换。 解码电路解码经由第二总线接口接收的一组压缩图像数据，以生成一组未压缩图像数据，然后经由第一总线接口传送。 因此，使用第二寻址方案和图像数据压缩对于未压缩的图像数据读取请求的源是透明的，并且接口装置因此可以用于连接使用不同寻址方案和图像数据格式的设备，而不需要 被修改。

公开(公告)号：US20170024158A1

公开(公告)日：2017-01-26

申请号：US15214800

申请日：2016-07-20

Applicant: ARM LIMITED

Inventor： Toni Viki BRKIC ,  Jakob Axel FRIES ,  Reimar Gisbert DÖFFINGER

IPC: G06F3/06

Abstract: A method and an apparatus for generating a signature representative of the content of a region of an array of data in a data processing system, where the region of the array of data comprising plural data positions, and each data position having an associated data value or values. A data value or values for a data position of the region of the data array is/are generated. The data value or values for the data position of the region of the data array is/are written to storage that stores the region of the data array as it is being generated. A signature representative of the content of the region of the data array is generated in parallel with the data value or values for the data position of the region of the data array being written to the storage.

Abstract translation: 一种用于生成表示数据处理系统中的数据阵列的区域的内容的签名的方法和装置，其中数据阵列的区域包括多个数据位置，并且每个数据位置具有关联的数据值或 价值观。 产生数据数据的数据值或数据数据的区域的数据位置的值。 将数据阵列的数据位置的数据值或值写入存储数据阵列正在生成的区域的存储器。 数据阵列区域的内容的签名代表与数据数据的数据值或数据位置并行生成，数据位置被写入存储器。