User Guide
CCS Technical Documentation System Module and User Interface
NEM-2
Issue 1 07/03 Copyright Nokia. All rights reserved.. Page 47
Figure 11: SIM interface NEM-2
MultiMediaCard MMC
NEM-2 uses a MMC as memory for the MP3/AAC files. Records from line in or FM radio
can be saved on this card. Also music files via USB can be stored on the MMC. The MMC
can be easy exchanged by the end user and is located under the battery pack. NEM-2 is
supporting MM1 and MM2 standard cards.
MMC power is supplied by additional discrete 3.3V regulator, which is controlled via
ADSP GPIO.
Flash Memory
ADSP code and data is stored in 16MBit, 16 Mbit wide asynchronous flash memory.
Flash power supply and flash programming supply are connected to AudioPlayerVDD
supply.
Ringing Tone Speaker and Amplifier
A bridge power amplifier (LM4890) drives the ringing tone speaker which can be shut-
down via ADSP GPIO6 line. The audio signal is routed from the audio codec (AIC23B)
ROUT and LOUT and is mixed via summation amplifier input to a mono signal.
Audio Digital Signal Processor (ADSP)
SMPS supplies ADSP core hardware modules (AudioPlayerVCore). ADSP peripherals power
supply is connected to AudioPlayerVDD regulator.
UEM
UPP
C5 C6 C7
C1
C2
C3
SIMRst
SIMCl
k
SIMIO
VSIM
From
Battery
SIMIO
SIMClk
SIMR
t
SIM
SIMIF
register
UEM
digital
logic
BSI
UIF Block
CBusDa
CBusEnX
CBusClk
C8
C4
UEMInt
SIMIO
SIMCl
k
SIMRst
SIM
ASIP
UEMK