Sim Interface - Nokia RH-64 Service Manual

RH-64
System module Nokia Customer Care
Figure 148 Keyboard schematics
The layout is shown in Keyboard layout in UI side.
Figure 149 Keyboard layout in UI side

SIM interface

The SIM interface is programmed to support 3V and 1.8V SIMs. SIM supply voltage is selected by with register
in the UEMCLite. It is only allowed to change the SIM supply voltage when the SIM IF is powered down. The SIM
power up/down sequence is generated in the UEMCLite.
The SIM interface is powered up when the SIMCardDet signal indicates "card in". This signal is derived from the
BSI signal.
SIM interface is implemented in two ASICs, UPP and UEMCLite. The SIM interface is the electrical interface between
the Subscriber Identity Module Card (SIM Card) and mobile phone (via UEMCLite device).
9243363 (Issue 1) Company Confidential Page 8–17
Copyright ©2005 Nokia. All Rights Reserved.