Baseband Technical Summary - Nokia RH-47 Series Description

RH-47
7 - Baseband Description & Troubleshooting

Baseband Technical Summary

The heart of the BB is UPP_WD2, which includes the MCU, DSP and digital control logic.
Power is supplied by the UEMK ASIC and a number of discrete regulators. Memory com-
prises 1x 64Mbit, 1x 128Mbit flash memory devices and 128Mbit SDRAM.
There are two audio transducers (earpiece 8 mm and a MALT speaker 16 mm) and exter-
nal galvanic headset (DCT4) interface. MALT speaker is also used for handling the ringing
tones. The MALT speaker is driven by a discrete audio amplifier.
For data connectivity, there is Bluetooth and an MMC card.
The display is a GD82C type colour display with 66000 Colours and 176x208 pixels with
backlighting.
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