User Guide

Figure 92 SIM interface

IrDA interface

IrDA specifies a reliable, fully digital peer-to-peer data link between IrDA units at data rates from 9600 bits/

s to 4 Mbits/s. The link is based on the serial transmission of data as pulses of infra red light at the wave

length of 870 nm and angles of +-15 degrees at the range 0 - 50 to 100 cm. Because of these restrictions and

the optical nature of the link, the transmission is not omnidirectional but focused and only reaches a peer

at a limited line-of-sight distance from the transmitter thus not disturbing any other units in the

neighbourhood.

Mini SD card interface

The mini SD card connector is mounted on the ‘sub’ block PWB. The mini SD card is supplied with 3 V supply

voltage. The detection of the mini SD card removal/insertion is done by a switch in the memory card door

on the mechanics. Removing the mini SD card while writing to the card may corrupt data in the SD card. The

switch is directly connected to host and it gives an interrupt to the SW while the status of the switch is

changed. SW turns power off on the mini SD card by switching off the mini SD card and level-shifter power

supply (V_MC). There is also switch inside in the mini SD card connector and when the mini SD card connector

switch status changes the card should be identified if card exists.

WLAN interface

A Wireless Local Area Network (WLAN) is a flexible data communication system in which a mobile user can

connect to a local area network through a wireless connection. A standard, which specifies the technologies

for WLAN, is called IEEE 802.11. The WLAN module is controlled by the application processor with SPI interface.

The WLAN-module incorporates switching for Bluetooth antenna.

RM-100

Nokia Customer Care System Module

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