Thread: Neo900 - finally a successor of N900
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joerg_rw is offline joerg_rw
2014-10-30 , 10:43
Posts: 2,222 | Thanked: 12,651 times | Joined on Mar 2010 @ SOL 3
#2220
Originally Posted by xman View Post
So when I saw "NFC kill RF switch" in the diagram I thought freakin great ... but before I get all excited I want to ask you if there any thing more besides the title.
Well, it is supposed to do exactly what the name says: switch off the NFC antenna so there's no way whatsoever for the NFC chip to communicate via RF.
[edit] If we can get a chip that's capable of working from RF energy (like a smartcard), then the operation scheme will be:
(KillSwitch-)NFC-enable controlled by CPU as long as CPU/device powered up.
(KillSwitch-)NFC-enable shuts down NFC when CPU/device powered down and battery inserted.
(KillSwitch-)NFC-enable allows NFC-RF-powered operation when battery removed and backlid (with NFC antenna) closed, for supporting sort of "emergency operation" e.g. when your battery runs empty and you need access to the bus ticket on NFC
/j
Last edited by joerg_rw; 2014-10-30 at 12:23.
 

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