Integration Manual

GTM353W Integration Manual

Author:

. Claessens

Version:

4.0 Draft 2

Creation Date:

September 20, 2006

Page:

22 of 52

Option Confidential:

This document is Option Confidential - it may not be duplicated, neither distributed externally without prior and written permission of

Option NV.

3.3.4.2 Maximum Trace Length

The maximum trace length depends on the trace capacitance, but on average it is advisable to

limit the length to a maximum of 200mm.

The module controls the signals RST and CLK. A totem-pole output drives these signals high

or low. The signal I/O is a bi-directional data line. The I/O interface is shown in Figure 10.

The module and the (U)SIM (in the SIM card holder), located on both ends of the lines,

control this data line. Either the module or the (U)SIM can pull this line low, through an

open-collector. The line is pulled-up by a resistor of 12kΩ.

Figure 10: I/O interface

During certification of the module the SIM interface is tested. A SIM card is simulated by the

test equipment. The test conditions are shown in Table 15 and Table 16. The test equipment

loads the I/O line with 30pF.

Contacts Low level High level Max. capacitive load

C1 (Vcc) --- I = 6 mA

C2 (RST)

I = -200 µA I = +200 µA

30 pF

C3 (CLK)

I = -20 µA I = +20 µA

30 pF

C5 (GND) --- ---

C6 ((Vpp) --- ---

C7 (I/O)

ME input

ME output

V = 0 V

I = -1 mA

I = +20 µA

30 pF

Table 15: Nominal test conditions on 3V SIM/ME interface

Module SIM card