Installation Instruction

Ref : SCT TMO MOD SPEC 662
Rev.: B
Ref. sec. :
Date:
18/11/2004
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MO2XX module – Confidential under NDA
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3. FUNCTIONAL DESCRIPTION
3.1 SIM
The SIM Card interface is compatible with the ISO 7816-3 IC card standard on the issues required by the GSM
11.11 Phase 2+ standard. The module also supports Release 99 of the SIM Toolkit recommendation too and
supports a Fixed Dialling Number directory.
The SIM Card interface insures the detection (SIMCD), the power on (SIMVCC) of the SIM Card and the
communication with it through a data signal (SIMIO), a clock signal (SIMCLK) and a reset signal (SIMRST).
Signal Pin N° Description
SIMRST SIM reset, provided by Base-band processor
SIMCLK SIM clock, provided by Base-band processor
SIMIO SIM serial data line, input and output
SIMVCC SIM supply voltage
SIMCD SIM insertion detection
SIM card connection:
Figure 2
SIM connection
The SIMCD signal should be connected to the SIM card reader in order to get SIMCD at low level (GND) when no
card is present and at high level (SIMVCC) when card is present (external pull down needed when SIM card
connector with detection is used).
This interface includes main protections.
MO2XX
SIMVCC
SIMIO
SIMRST
SIMCLK
SIMCD
SIM card
In option