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AUTOSAR CountdownAdvent Calendar 2022

Day 8

Specification of Memory Access, AUTOSAR R22-11, CP, No.1017

Last updated at Posted at 2022-12-08

Specification of Memory Access, AUTOSAR R22-11, CP, No.1017

AUTOSAR Countdown Calendar 2022

2022/12/09日の投稿です。

AUTOSARが、今年の版、R22-11公開しました。公開行事の模様は

AUTOSAR R22-11 Release Event 20221208

下記は想定URLです。順次確認中です。

間違っていたら、いいね を押していただいて、コメント欄にご報告くださると幸いです。
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文書は検索してダウンロードすることができます。
クラウドサービスにありがちな、あるのにないかのような検索結果が出ることがあります。

AUTOSAR R22-11 Qiita 記事一覧はこちらに編集中です。

<この項は書きかけです。順次追記します。>

文書変更(Document Change)

• Renamed MemAcc_MemApiType in MemAcc_MemBinaryHeaderType
• Additional DET checks added
• Updated Configurable Interface chapter
• Corrected Service IDs
• Minor corrections and bugfixes
• Editorial changes

用語(terms)

Terms Description
BndM Bulk Non-Volatile Data Manager
ECC Error Correction Code
FOTA Firmware Over The Air - remote firmware update using wireless communication
HSM Hardware Security Module - dedicated security MCU core
OTA Over The Air - general term for wireless communication between OEM backend and vehicle
RWW Read While Write - capability of a memory device to perform a read operation in one memory bank while at the same time a write/erase operation takes place in another bank
SOTA Software Over The Air - remote software update using wireless communication
Address Area Contiguous memory area in the logical address space Typically multiple physical memory sectors are combined to one logical address area.
Bank Group of sector batches. In case a memory technology is segmented in sectors, a bank is an instance of a sector batch group in which no read-while-write operation is permitted. In case of a flash memory device, this typically maps to an individual flash controller.
Job Request Memory access request by an upper layer module for an address area.
Memory Device Group of banks
Page Burst Aggregated access of memory pages for improved performance In case a memory device technology has a physical segmentation, some memory devices provide an optimized access method to read or write multiple pages at a time. Page burst denotes the aggregation of memory pages used for the access optimization.
Read Page Smallest readable unit of a memory device (in bytes) Some memory device technologies must be accessed considering a physical segmentation. Hence a byte-wise access is not possible for all memory device technologies. This term defines the minimum size that needs to be read in one access.
Sector Smallest erasable memory unit (in bytes) Some memory device technologies require an explicit physical erase operation before the memory can be written. A sector defines the minimum size of such an erase unit. Depending on the memory device, sectors can be either uniform- or variable-sized.
Sector Batch Aggregation of sectors with uniform size Logical aggregation of contiguous sectors with the same size.
Sector Burst Aggregation of sectors for improved erase performance In case a memory technology needs a physical erase operation, some devices provide an erase performance optimization by erasing an aggregation of sectors in one step.
Sub Address Area Contiguous memory area in the logical address space mapped to a sector batch of one memory device.
Write Page Smallest writeable unit of a memory device (in bytes) Some memory device technologies must be accessed considering a physical segmentation. Hence a byte-wise access is not possible for all memory device technologies. This term defines the minimum size that needs to be written in one access.

英日

日本語は仮訳

T.B.D.

参考(reference)

[1] Glossary, AUTOSAR_TR_Glossary
https://www.autosar.org/fileadmin/standards/foundation/22-11/AUTOSAR_TR_Glossary.pdf
[2] General Specification of Basic Software Modules
AUTOSAR_SWS_BSWGeneral
[3] Requirements on Memory Hardware Abstraction Layer
AUTOSAR_SRS_MemoryHWAbstractionLayer
[4] General Requirements on Basic Software Modules
AUTOSAR_SRS_BSWGeneral
[5] Requirements on AUTOSAR Features
AUTOSAR_RS_Features

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更新資料 Abstract Platform, Vehicle Modelへの対応版

Specification of Memory Access, No.1017, CP, AUTOSAR R22-11 新

https://qiita.com/kaizen_nagoya/items/5eb5b76b4a50b15745ed
<この記事は個人の過去の経験に基づく個人の感想です。現在所属する組織、業務とは関係がありません。>

文書履歴(document history)

ver. 0.01 初稿 20221208
ver. 0.02 URL追記 20230101
ver. 0.03 URL追記 20230127

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