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Google Pixel XL 拆解

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Google Pixel XL Teardown: crwdns2935265:00crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Google Pixel XL Teardown: crwdns2935265:00crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Google Pixel XL Teardown: crwdns2935265:00crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

  • The daughterboard pops out of the rear case with relative ease, giving us access to the USB Type-C port and the microphone.

  • This is a pretty bare-bones part, which means cheap USB port replacements. Historically, USB ports have been a common failure point (although USB Type-C may prove somewhat more robust in that regard).

  • Unfortunately, USB-C has been having, erm, other issues.

  • We found a few bits of silicon on the daughterboard:

  • Qualcomm QFE2550 dynamic antenna matching tuner.

  • AKM Semiconductor AK8789 Hall-effect sensor

  • NXP Semiconductor PTN36241G USB 3.0 redriver

  • ON Semiconductor FUSB340 USB 3.1 SuperSpeed 10 Gbps switch

从后盖取出子板相对比较容易，我们在上面看到了USB Type-C接口和麦克风。

这只是个很简单的部件，意味着USB口更换可以很便宜。从历史角度看去，USB接口一直是个常见的故障点（尽管USB Type-C被证明更为耐用一些）。

不幸的是，USB-C还有个，呃，还有个问题。

我们在子板上发现了一小颗芯片：一个高通QFE2550动态天线匹配调谐芯片。

[* black] The daughterboard pops out of the rear case with relative ease, giving us access to the USB Type-C port and the microphone.
[* black] This is a pretty bare-bones part, which means cheap USB port replacements. Historically, USB ports have been a common failure point (although USB Type-C may prove somewhat more robust in that regard).
[* icon_reminder] Unfortunately, USB-C has been having, erm, [http://www.theverge.com/2016/2/4/10916264/usb-c-russian-roulette-power-cords|other issues|new_window=true].
-[* red] We found one bit of silicon on the daughterboard: a Qualcomm [https://www.qualcomm.com/videos/qualcomm-rf360-dynamic-antenna-matching-tuner-qfe2550|QFE2550|new_window=true] dynamic antenna matching tuner.
+[* black] We found a few bits of silicon on the daughterboard:
+ [* red] Qualcomm [https://www.qualcomm.com/videos/qualcomm-rf360-dynamic-antenna-matching-tuner-qfe2550|QFE2550|new_window=true] dynamic antenna matching tuner.
+ [* orange] AKM Semiconductor [https://www.akm.com/global/en/products/magnetic-sensor/hall-effect-ic/hall-effect-ic-switch/ak8789/|AK8789] Hall-effect sensor
+ [* yellow] NXP Semiconductor [https://www.nxp.com/products/interfaces/signal-conditioners/superspeed-usb-3-0-redriver:PTN36241G|PTN36241G] USB 3.0 redriver
+ [* green] ON Semiconductor [https://www.onsemi.com/products/interfaces/analog-switches/fusb340|FUSB340] USB 3.1 SuperSpeed 10 Gbps switch

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