SIM interface
The phone has a SIM (Subscriber Identification Module) interface including a SIM connector.
The SIM interface consists of an internal interface between RAPU and EM ASIC (N2200), and an external
interface between EM ASIC and SIM contacts.
Figure 45 SIM interface
As the phone does not have a traditional battery cover due to semi-fixed battery concept, the SIM card can
be removed and inserted without removing the battery.
For safe SIM card functionality, SIM card removal detection is used with detection springs touching the SIM
card tray.
Only pre-warning signal is used which is connected to SimDetX input of Gazoo/Pearl via inverter circuit. The
following figure shows the principle of SIM circuitry with the removable SIM tray.
Figure 46 SIM circuitry with removable tray
RM-626
System Module
Page 6 – 16
COMPANY CONFIDENTIAL
Issue 1
Copyright © 2011 Nokia. All rights reserved.
