Integration Manual

GTM353W Integration Manual
Author:
R
. Claessens
Version:
4.0 Draft 2
Creation Date:
September 20, 2006
Page:
25 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.
3.3.5.2 FH19 Signal Routing
The connection between the GTM and UICC cardholder is made by an FFC (flexible flat
cable). Shielding in this environment is much more problematic. In many cases the signals are
not shielded at all. However, the ground wires between every active signal grants certain
immunity against noise.
However an additional PCB board should be designed to host cardholder and some
decoupling capacitors.. The 8-contacts connector from Hirose’s FH19 Series is the same as on
the GTM module. Keep in mind the flat cable has a symmetrical usage.
Figures below show an example for an UICC card holder PCB board and interface. The
schematic and a layout are shown in these pictures.
· Figure 13: Possible Schematic of a UICC card holder PCB board