User Guide

Energy management

Filter components

The master of EM control is Liteplus and with SW it has the main control of the system voltages and operating

modes. The power distribution diagram is presented in the illustration below.

Figure 111 Power connection diagram

All connectors going to the “outside world” have filter components, ESD protection and EMC reduction.

The Digital/Data lines on SIM have special dedicated filter ASIP. The below figure show the SIM filtering.

Figure 112 SIM filtering

The Audio circuit: Earpiece, IHF, internal microphone and external speaker are filtered with discrete

components (common mode reduction coils, Varistors, caps and resistors), where as the external microphone

uses differential mode mic. ASIP

RM-512; RM-513; RM-514; RM-515; RM-543

System Module

Issue 2 COMPANY CONFIDENTIAL Page 6 –7