Device Memories; Combo Memory; Audio Concept; Audio Hw Architecture - Nokia MOBILE TERMINAL Service Manual

RM-356
System Module and User Interface
• A/D converter
• Regulators
• Vibra interface
• Digital interface (CBUS)
EMC ASIP (Appcation Specified Integrated Passive) is stacked on top of Vilma (hence called AVilma). It includes
biasing passives for microphones and EMC filters for SIM, microphones etc.

Device memories

Combo memory

The memory consists of DDR SDRAM and MuxedMassMemory (M3)(NAND) combined into a single package.
Memory capacity is 1Gb DDR and 2Gb M3.

Audio concept

Audio HW architecture

The functional core of the audio hardware is built around three ASICs: RAPIDOYAWE engine ASIC, mixed signal
ASIC Avilma and D/A converter DAC33.
DAC33 converts digital audio data to analogue signal, and TPA6130 audio amplifier provides an interface for
the accessory connector.
AVilma provides analogue signal for earpiece and for D-class audio amplifier TPA2012D2, which drives the
integrated stereo handsfree speakers.
There are four audio transducers:
• Earpiece
• Two speakers
• Digital MEMS (Microelectromechanical systems) microphone
Avilma provides an output for the dynamic vibra component.
All wired audio accessories are connected to the AV accessory connector.
The Bluetooth audio and FM radio module, which is connected to the RAPIDOYAWE, supports Bluetooth audio
and FM radio functionality.
Issue 1 COMPANY CONFIDENTIAL
Copyright © 2008 Nokia. All rights reserved.
Page 6 –29