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{{NoteTA
|G1=Electronics
}}
{{Infobox CPU
| name = 苹果A9
| image = Apple A9 APL0898.jpg
| image_size = 144px
| caption = 苹果A9芯片
| produced-start = 2015年9月9日
| produced-end = 2017年3月21日
| slowest = 1.85 GHz<ref name="iPhone 6s benchmark">{{cite web |url=http://www.idownloadblog.com/2015/09/21/phone-6s-customer-receives-early-benchmarks/ |title=iPhone 6s customer receives her device early, benchmarks show a marked increase in power |publisher=iDownloadBlog |date=September 21, 2015 |accessdate=September 25, 2015 |archive-date=2015-09-24 |archive-url=https://web.archive.org/web/20150924170226/http://www.idownloadblog.com/2015/09/21/phone-6s-customer-receives-early-benchmarks/ |dead-url=no }}</ref><ref name="iPhone 6s CPU">{{cite web |url=http://www.trustedreviews.com/news/revealed-iphone-6s-uses-1-8ghz-dual-core-a9-chip |title=Revealed: iPhone 6S uses 1.85GHz dual-core A9 chip |publisher=Trusted Reviews |date=September 18, 2015 |accessdate=September 25, 2015 |archive-date=2016-01-05 |archive-url=https://web.archive.org/web/20160105073453/http://www.trustedreviews.com/news/revealed-iphone-6s-uses-1-8ghz-dual-core-a9-chip |dead-url=no }}</ref>
| slow-unit =
| fast-unit =
| size-from = 14[[納米|nm]]
| size-to = 16nm
| soldby =
| designfirm = [[Apple Inc.]]
| manuf1 = [[三星电子]]（14nm）<br />[[台湾积体电路制造公司|TSMC]]（16nm）
| arch = [[ARM架構|ARMv8-A]]（A64/A32/T32）
| microarch = Twister<ref>{{Cite web|url=http://www.anandtech.com/show/9662/iphone-6s-and-iphone-6s-plus-preliminary-results|title=iPhone 6s and iPhone 6s Plus Preliminary Results|publisher=AnandTech|accessdate=January 16, 2016|archive-date=2016-05-26|archive-url=https://web.archive.org/web/20160526001956/http://www.anandtech.com/show/9662/iphone-6s-and-iphone-6s-plus-preliminary-results|dead-url=no}}</ref><ref name="anandtech.com">{{Cite web|url=http://www.anandtech.com/show/9686/the-apple-iphone-6s-and-iphone-6s-plus-review/4|title=The Apple iPhone 6s and iPhone 6s Plus Review|publisher=AnandTech|accessdate=January 16, 2016|archive-date=2016-01-18|archive-url=https://web.archive.org/web/20160118111648/http://www.anandtech.com/show/9686/the-apple-iphone-6s-and-iphone-6s-plus-review/4|dead-url=no}}</ref>
| code = APL0898,<ref name="iPhone6STeardown">{{cite web |url=https://www.ifixit.com/Teardown/iPhone+6s+Teardown/48170 |title=iPhone 6s Teardown |publisher=iFixit |date=September 25, 2015 |accessdate=September 26, 2015 |archive-date=2016-01-10 |archive-url=https://web.archive.org/web/20160110082656/https://www.ifixit.com/Teardown/iPhone+6s+Teardown/48170 |dead-url=no }}</ref> APL1022<ref name="chipwors-dualsource">{{Cite web |url=http://www.chipworks.com/about-chipworks/overview/blog/a9-is-tsmc-16nm-finfet-and-samsung-fabbed |title=To our surprise, we have found two different A9 application processors! |access-date=2016-01-16 |archive-url=https://web.archive.org/web/20160917230303/http://www.chipworks.com/about-chipworks/overview/blog/a9-is-tsmc-16nm-finfet-and-samsung-fabbed |archive-date=2016-09-17 |dead-url=yes }}</ref>
| numcores = 2<ref name="Chipworks-iPhone6S">{{cite web|url=http://www.chipworks.com/about-chipworks/overview/blog/inside-the-iphone-6s|title=Inside the iPhone 6s|publisher=Chipworks|date=September 25, 2015|accessdate=September 26, 2015|archive-url=https://web.archive.org/web/20170203083215/http://www.chipworks.com/about-chipworks/overview/blog/inside-the-iphone-6s|archive-date=2017-02-03|dead-url=yes}}</ref>
| l1cache = 每个核心各有64 KB指令缓存和64 KB数据缓存
| l2cache = 共享3 MB<ref name="Chipworks-iPhone6S" />
| l3cache = 共享4 MB<ref name="AnandTech A9 L3 Cache Size" />
| application = 移动系统芯片
| gpu = PowerVR Series 7XT GT7600 (six-core) <ref name="iPhone 6S Review">{{cite web |url=http://www.gsmarena.com/apple_iphone_6s-review-1314p6.php |title=iPhone 6S Review |publisher=GSM Arena |date=October 2015 |accessdate=2016-01-16 |archive-date=2016-01-12 |archive-url=https://web.archive.org/web/20160112052002/http://www.gsmarena.com/apple_iphone_6s-review-1314p6.php |dead-url=no }}</ref><ref name="Apple A9 / PowerVR GT7600">{{cite web |url=http://www.notebookcheck.net/Imagination-PowerVR-GT7600-in-the-Apple-A9-Benchmarks-and-Specs.150859.0.html |title=Apple A9 / PowerVR GT7600 |publisher=NotebookCheck |date=September 2015 |accessdate=2016-01-16 |archive-date=2016-01-21 |archive-url=https://web.archive.org/web/20160121221319/http://www.notebookcheck.net/Imagination-PowerVR-GT7600-in-the-Apple-A9-Benchmarks-and-Specs.150859.0.html |dead-url=no }}</ref>
| predecessor = [[Apple A8]]
| successor = [[Apple A10 Fusion]]
| variant = [[Apple A9X]]
}}
[[File:A9 APL0898 iPhone6s mlb 820-5507-A.jpg|thumb|在iPhone SE上的Apple A9 SoC (APL1022)主機板]]
[[File:A9 APL1022 iPhoneSE 082-00282.jpg|thumb|在iPhone 6s上的Apple A9 SoC (APL0898) 主機板]]

'''苹果A9'''是一款由[[苹果公司]]设计的[[系统芯片]]（SoC）。它内含了基于苹果自主[[微架构]]（区别于ARM发布的公版微架构）的中央处理器核心，擁有[[64位元]][[ARM架构|ARMv8-A]][[指令集架构]]。这款芯片于2015年9月9日发布，首先被搭载于[[iPhone 6S]]和iPhone 6S Plus智能手机中。<ref name="Apple iPhone 6S PR">{{cite press release |url=http://www.apple.com/pr/library/2015/09/09Apple-Introduces-iPhone-6s-iPhone-6s-Plus.html |title=Apple Introduces iPhone 6s & iPhone 6s Plus |publisher=Apple |date=September 9, 2015 |accessdate=September 9, 2015 |archive-date=2015-09-10 |archive-url=https://web.archive.org/web/20150910183849/http://www.apple.com/pr/library/2015/09/09Apple-Introduces-iPhone-6s-iPhone-6s-Plus.html |dead-url=no }}</ref>苹果公司宣称该芯片较前一代苹果A8的[[中央处理器]]性能提高了70%，而图形性能提高了90%。<ref name="Apple iPhone 6S PR" />

== 设计 ==
A9芯片是一款双核64位元处理器，系统主频为1.8GHz，相容ARMv8A指令集架构，<ref name="iPhone 6s benchmark"/><ref name="Chipworks-iPhone6S" />苹果给这个自主研发的微架构的代号命名为“Twister”。<ref name="anandtech.com"/>iPhone 6S搭载的A9芯片内有2 GB的[[Mobile DDR#LPDDR4|LPDDR4]]記憶體。<ref name="iPhone6STeardown" /><ref name="Chipworks-iPhone6S" />高速暫存方面，A9芯片的两个处理器核心各自拥有64 KB的一级指令暫存和64 KB的一级資料暫存，而3 MB二级暫存、4 MB的三级暫存则由两个核心以及系统芯片其他部分分享。<ref name="AnandTech A9 L3 Cache Size">{{cite news | url=http://www.anandtech.com/show/9825/correcting-a9s-l3-cache | title=Correcting Apple's A9 SoC L3 Cache Size: A 4MB Victim Cache | work=AnandTech | date=November 30, 2015 | accessdate=1 December 2015 | author=Smith, Ryan | archive-date=2015-12-01 | archive-url=https://web.archive.org/web/20151201175259/http://www.anandtech.com/show/9825/correcting-a9s-l3-cache | dead-url=no }}</ref>A9芯片的“Twister”[[微架构]]类似第二代“Cyclone”微架构（用于[[苹果A8|A8]]芯片）。它具有以下特性：16级指令流水线，指令发射宽度为6，載入指令延迟周期为4，分支预测失败代价周期为9，拥有4条整数流水线、4个[[算术逻辑单元]]、2个存取单元、2个分支单元等。A9芯片相较A8芯片效能的大幅提升主要是得益于其1.8 GHz的主频率、更好的儲存子系统、更细致入微的微架构调校和更低的工艺节点。

该芯片还包含了一个新的[[图像处理器]]，能为照相机提供更佳的降低雜訊、對焦效能。<ref name="Apple iPhone 6S Tech">{{cite web |url=http://www.apple.com/iphone-6s/technology/ |title=iPhone 6s - Technology |publisher=[[Apple Inc.|Apple]] |date=September 8, 2015 |accessdate=September 10, 2015 |archive-date=2015-09-09 |archive-url=https://web.archive.org/web/20150909193953/http://www.apple.com/iphone-6s/technology/ |dead-url=no }}</ref>A9芯片内部还直接整合成一个[[苹果M9|M9]]运动[[協同處理器]]，这个协处理器主要负责采集和处理加速度感知器、陀螺仪、指南针、压力感知器等的資料，同时还负责识别[[Siri]]语音命令。<ref name="Apple iPhone 6S Tech" />

== 晶圆代工 ==
苹果公司是一家[[无厂半导体公司]]，只负责[[集成电路设计|芯片设计]]，[[半导体器件制造|芯片制造]]需要[[晶圆代工]]厂家来完成。苹果公司采取了使用双供应商的策略，同样的芯片设计分别由[[三星电子]]和[[台湾积体电路制造公司|台积电]]完成晶圆代工。三星生产的芯片代号为APL0898，使用14纳米[[多閘極電晶體|FinFET]]工艺制造，面积为96平方毫米；而台积电生产的芯片代号为APL1022，使用了16纳米FinFET工艺制造，面积为104.5平方毫米。虽然略有区别，但是苹果宣称性能并无显著区别。<ref>{{cite news | url=http://www.anandtech.com/show/9665/apples-a9-soc-is-dual-sourced-from-samsung-tsmc | title=Apple’s A9 SoC Is Dual Sourced From Samsung & TSMC | work=AnandTech | date=September 28, 2015 | accessdate=30 September 2015 | author=Smith, Ryan | archive-date=2015-09-30 | archive-url=https://web.archive.org/web/20150930195809/http://www.anandtech.com/show/9665/apples-a9-soc-is-dual-sourced-from-samsung-tsmc | dead-url=no }}</ref>

2015年10月，互联网上有报道称，根据测试程序的结果，搭载三星代工芯片的iPhone续航能力较搭载台积电代工芯片的iPhone更低，这一报道引起了热议。<ref>{{cite news |last=Cunningham |first=Andrew |url=http://arstechnica.com/apple/2015/10/samsung-vs-tsmc-comparing-the-battery-life-of-two-apple-a9s/ |title=Samsung vs. TSMC: Comparing the battery life of two Apple A9s |work=[[Ars Technica]] |publisher=[[Condé Nast]] |date=12 October 2015 |accessdate=13 October 2015 |archive-date=2015-10-13 |archive-url=https://web.archive.org/web/20151013031127/http://arstechnica.com/apple/2015/10/samsung-vs-tsmc-comparing-the-battery-life-of-two-apple-a9s/ |dead-url=no }}</ref>苹果公司认为，特定的实验室测试让设备长时间高负荷运行，其结果并不能表现真实的续航能力，因为这些程序让中央处理器长期处于高性能状态。他们还表示，内部的测试和消费者提供的数据表示不同的芯片造成的续航差异仅在2%到3%之间。<ref name=anandtech-analyzinga9>{{cite web|title=Analyzing Apple's Statement on TSMC and Samsung A9 SoCs|url=http://www.anandtech.com/show/9708/analyzing-apple-statement-for-tsmc-and-samsung-a9|website=Anandtech|accessdate=11 October 2015|archive-date=2015-10-13|archive-url=https://web.archive.org/web/20151013225522/http://anandtech.com/show/9708/analyzing-apple-statement-for-tsmc-and-samsung-a9|dead-url=no}}</ref><ref name=wired-chipgate>{{cite web|last1=Barrett|first1=Brian|title=It Doesn't Matter Which A9 Chip Your iPhone Has. Get Over It.|url=http://www.wired.com/2015/10/iphone-6s-a9-battery-life/|website=Wired|accessdate=11 October 2015|archive-date=2016-01-28|archive-url=https://web.archive.org/web/20160128122639/http://www.wired.com/2015/10/iphone-6s-a9-battery-life/|dead-url=no}}</ref>

除了拆解裝置以外，使用者可藉由部分App確認裝置搭載的SoC之代工方。[[App Store]]一款名為CPU Identifier<ref>{{cite web|title=CPU Identifier：在App Store 上的App - iTunes - Apple|url=https://itunes.apple.com/tw/app/cpu-identifier/id1045029477|accessdate=2017-03-30|archive-date=2017-03-31|archive-url=https://web.archive.org/web/20170331031335/https://itunes.apple.com/tw/app/cpu-identifier/id1045029477|dead-url=no}}</ref>的iOS App可以令用家查看手上的iPhone6s(Plus)搭載的SoC是三星代工版本還是台積電代工之版本，然而這個功能已於該app的最新版本中被移除。<ref>{{cite web|title=iPhone 6s 開箱後第一件事：怎麼測出你的6s用的是哪款A9處理器？|url=http://www.techbang.com/posts/39279-iphone-6s-6s-plus-how-to-tell-you-who-is-making-the-processor|website=techbang.com|accessdate=2017-03-30|archive-date=2017-05-06|archive-url=https://web.archive.org/web/20170506124008/http://www.techbang.com/posts/39279-iphone-6s-6s-plus-how-to-tell-you-who-is-making-the-processor|dead-url=no}}</ref><ref>{{cite web|title=你的 iPhone 6S 用哪個處理器？用這 App 鑑定你那台抽中Samsung 或 TSMC 吧！|url=http://appappapps.com/2015/10/05/test-iphone-6s-a9-samsung-or-tsmc/|accessdate=2017-03-30|archive-url=https://web.archive.org/web/20170331052156/http://appappapps.com/2015/10/05/test-iphone-6s-a9-samsung-or-tsmc/|archive-date=2017-03-31|dead-url=yes}}</ref>不過，另一款Apple應用商店上的電池監控app BMSSM<ref>{{cite web|title=Battery Memory System Status Monitor on the App Store|url=https://itunes.apple.com/us/app/battery-memory-system-status/id497937231|accessdate=2017-03-30|archive-date=2017-03-31|archive-url=https://web.archive.org/web/20170331031717/https://itunes.apple.com/us/app/battery-memory-system-status/id497937231|dead-url=no}}</ref>則仍可顯示SoC代號，可根據代號辨識SoC的代工廠商。<ref>{{cite web|title=舊方法太麻煩！新方法鑑定 iPhone 6S 處理器是 Samsung 或 TSMC|url=http://appappapps.com/2015/10/09/check-iphone-6s-a9-samsung-tsmc/|access-date=2017-03-30|archive-url=https://web.archive.org/web/20170331052159/http://appappapps.com/2015/10/09/check-iphone-6s-a9-samsung-tsmc/|archive-date=2017-03-31|dead-url=yes}}</ref>

== 各界反應 ==
尽管有两种代工版本，芯片的外观并没有太大区别，僅僅在製程上不同。芯片的外层封装拥有相同的尺寸，而内部的芯片则根据其代工来源的不同而不同，面積略有差異。官方宣布正常使用下兩種版本並不會有差別，但導致的晶片門事件依舊給蘋果帶來了壓力——雖然兩種版本的跑分差異在誤差範圍內，但續航力的差異確讓使用者很在意。<ref>{{cite web|title=iPhone 6S 處理器有兩種: Samsung 和 TSMC 兩款 A9 處理器效能、電量竟然差很遠！|url=http://appappapps.com/2015/10/05/iphone-6s-samsung-tsmc-a9-test/|access-date=2017-03-30|archive-url=https://web.archive.org/web/20170331052153/http://appappapps.com/2015/10/05/iphone-6s-samsung-tsmc-a9-test/|archive-date=2017-03-31|dead-url=yes}}</ref>
<gallery>
File:Apple A9 APL0898.jpg|APL0898，三星代工的芯片
File:Apple A9 APL1022.jpg|APL1022，台积电代工的芯片
</gallery>

== 產品使用 ==
* [[iPhone 6s]]
* [[iPhone 6s Plus]]
* [[iPhone SE]]
* [[IPad (第5代)|iPad 2017]]

==參見==
* [[Apple Silicon]]
* [[Apple A8]]
* [[Apple A10 Fusion|Apple A10]]
* [[Apple A9X]]

== 参考文献 ==
{{Reflist|3}}

{{Apple hardware}}
{{ARM晶片}}

[[Category:64位元微處理器]]
[[Category:ARM架構]]
[[Category:Apple晶片]]

Apple A9 - 版本历史

imported>Kdmjf12000 来自 2026年3月8日 (日) 08:49