Autonomous Peripheral 동작

Autonomous peripheral operation

컴퓨팅에서 Autonomous Peripheral operation은 일부 마이크로컨트롤러 아키텍처에서 볼 수 있는 하드웨어 기능입니다.일부 태스크를 임베디드 Autonomous Peripheral로 오프로드하여 지연을 최소화하고 하드 실시간애플리케이션의 throughput을 향상시켜 초저전력 설계로 에너지를 절약합니다.

개요

마이크로컨트롤러의 자율 주변기기는 1990년대에 처음 도입되었다.임베디드 주변기기를 CPU로부터 독립적으로 동작시킬 수 있고, 사전에 설정 가능한 방법으로 서로 통신할 수도 있습니다.이것에 의해, 이벤트에 의한 통신이 주변기기에 오프로드 되어, 레이텐시의 단축에 의한 리얼 타임 퍼포먼스의 향상에 도움이 됩니다.또, 병렬 처리의 추가에 의해서, 데이터 스루풋이 향상될 가능성도 있습니다.2009년 이후, 새로운 실장에서는, sleep 모드에서도 계속 기능하도록 스킴이 개선되어, 에너지 절약을 위해서 CPU(및 그 외의 영향을 받지 않는 페리페럴 블록)를 장시간 휴지 상태로 둘 수 있게 되었습니다.이는 신흥 IoT [1]시장이 부분적으로 주도하고 있다.

개념적으로 Autonomous Peripheral 동작은 Direct Memory Access(DMA; 다이렉트메모리 액세스)와 하드웨어 인터럽트의 일반화와 혼합으로 볼 수 있습니다.이벤트 신호를 발행하는 주변기기는 이벤트 발생기 또는 생산기라고 불리는 반면 타깃 주변기기는 이벤트 사용자 또는 소비자라고 불립니다.일부의 실장에서는, 주변기기는, 착신 데이터를 전처리하도록 설정할 수 있습니다.또, 처리를 위해서 CPU를 개입시키지 않고, 하드웨어의 비교, 윈도우 설정, 필터링, 또는 평균화 등, 주변기기에 고유의 다양한 기능을 실행할 수 있습니다.

실장

이미 알려진 구현은 다음과 같습니다.

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레퍼런스

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