User Guide

NPL-4/5
System Module and User Interface Nokia Customer Care
Page 40 Copyright © 2004 Nokia Corporation. All rights reserved. Issue 1 05/04
age. It is only allowed to change the SIM supply voltage when the SIM IF is powered
down.
The whole SIM interface locates in two chips UPP and UEMEK.
The SIM interface in the UEMEK contains power up/down, port gating, card detect, data
receiving, ATRcounter, registers and level shifting buffers logic. The SIM interface is the
electrical interface between the Subscriber Identity Module Card (SIM Card) and mobile
phone (via UEMEK device).
Table 21: SIMCARDet Detection
The data communication between the card and the phone is asynchronous half duplex.
The clock supplied to the card is in GSM system 1.083 MHz or 3.25 MHz.
Figure 10: UPP/UEMEK SIM Interface Connections
FCI (Functional Cover Interface)
NPL-4/5 has functional cover interface for changeable functional B-cover. The functional
cover interface consists of FCI ASIP chip and five contact pads on UI PWB. HW does not
support the I2C in BB4.0 engine whereupon interface uses SW emulated I2C protocol.
The FCI ASIP chip includes switch for power supply control and EMC filters for data lines.
Parameter
V
ariable Min
T
yp Max Unit
SIMCARDet, BSI
comparator
Threshold
Vkey 1.94 2.1 2.26 V
SIMCARDet, BSI
comparator
Hysteresis (1)
Vsimhyst 50 75 100 mV
yp
UEME
K
UPP
C5 C6 C7
C1
C2
C3
SIMRst
SIMClk
SIMIO
V
SIM
From Battery
t
ype contact
SIMIO
SIMClk
SIMR
st
SIM
SIMIF
register
UEME
K
digital
lo
g
ic
BSI
UIF Block
CBusDa
CBusEnX
CBusClk
C8
C4
UEMEKI
nt
SIMIO
SIMClk
SIMRst
SIM
ASIP