Device Memories; Combo Memory; Audio Concept; Audio Hw Architecture - Nokia RM-235 Service Manual

Device memories

Combo memory

The memory of the device consists of stacked DDR SDRAM and MuxedMassMemory (M3). Combo memory DDR/
M3 memory has 768Mb DDR + 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 signal to analog and is routed to the FM Transmitter and amplifier TPA6130
which provides an interface for the transducers and the accessory connector.
Integrated handsfree stereo speakers are driven by a D-class audio amplifier TPA2012D2.
There are two audio transducers:
• 7x11 mm dynamic earpiece
• Two 8X12 mm dynamic speakers
Avilma provides an output for the dynamic vibra component. All galvanic audio accessories are connected to
the AV accessory connector.
A Bluetooth audio and FM radio module, which is connected to the RAPIDOYAWE supports Bluetooth audio
and FM radio functionality.
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System module and user interface
RM-235
Issue 1