User Guide

CCS Technical Documentation System Module

NPM-2NX

Issue 1 07/02 ãNokia Corporation Page 21

Interface

Interface is compatible with Nokia 61XX and 51XX products. An accessory is detected by

the HeadInt and HookInt line which are connected to system connector. The HookInt line

is used to activate or end a call (only in HDC-9P).

Figure 8: System connector

Technical information

Esd protection is made by spark caps, buried capacitor (Z154 - Z155 and Z157) and

inside UEM which is protected ±8kV. RF and BB noises are prevented by inductors.

IR module

Introduction

IR module is used to short-range data transfer. It is a low-power infrared transceiver

module complaint to the IrDA 1.2 standard for fast infrared data communication. NPM-

2NX is using Vishay's TFDU5102 IR module. The IR module is located to the top of the

engine side next to Power Up button.

Interface

X100

1 VCHARIN1,2,K

2 GND

14 GND

13 FBUSTXO

12 FBUSRXO

8 XMIC

9 SGND

10 XEAR

11 MBUS

6 MICP

7 MICN

4 PWMO

5 PWMO

3 VCHARIN1,2,K