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Changes to Step #22

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Edit approved by Jeff Suovanen


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[* black] More ICs on the back of the logic board:
[* red] Qualcomm WFR1620 receive-only companion chip. Qualcomm [|states|new_window=true] that the WFR1620 is "required for implementation of carrier aggregation with WTR1625L."
[* orange] Qualcomm PM8019 Power Management IC
[* yellow] Texas Instruments 343S0694 Touch Transmitter
- [* green] AMS AS3923 Boosted NFC Tag Front End
- [* icon_note] We believe that this is simply a small revision of the AMS [|AS3922|new_window=true], which allows for "payment functionality in ultra-small form factors such as SIM and µSD".
+ [* green] AMS [|AS3923] NFC Booster IC designed to “improve performance of existing NFC controllers for challenging environments such as mobile and wearables” and also delivers “less restrictive antenna design requirements”.
[* blue] Cirrus Logic [|338S1201|new_window=true] Audio Codec
[* icon_reminder] A big and hearty mega-thanks to our pals at [|Chipworks|new_window=true] for helping us ID all of this tech. We definitely couldn't have done it without them!