User Guide

• TikuEDGE processor with integrated memory
• Baseband ASIC (UEMEK)
RF engine
The RF module performs the necessary high frequency operations of the engine. In both transmitter and
receiver, the modulator and demodulator operate at the channel frequency.
The core components of the RF module are:
• Helgo (ASIC)
• Power amplifier module
The key components are:
• 26 MHz VCTCXO for frequency reference
• 3296-3980 MHz super high frequency VCO
• RX/TX switch (in front end module)
• Two RF bandpass SAW filters (in front end module)
• Three additional SAW filters
The baseband section controls the RF module through the serial bus, RFBus. This passes information about
frequency band, mode of operation and synthesizer channel for RF as well as exact timing information and
receiver gain settings. Helgo controls the mode of operation, and further sends control signals to the front end
module and the power amplifier module.
Figure 122 Control signals in RF module
In addition to the RFBus there are still other interface signals for the power control loop and VCTCXO control
and for the modulated waveforms.
TikuEDGE and memory block
The main processor in this device is the stacked TikuEDGE (TEMS), which includes the memory/flash combibation
ASIC.
Main features
Some of the features of TikuEDGE are:
• DSP processors and co-processors
• Serial flash interface (SFI001)
• 4 Mb of PDRAM
• Traffic controller for memory interface (dct4 flash/sram, sdram)
• General purpose USARTs
• SIM card interface
• I2C interface
• GSM coder
• Interface control for: keyboard, LCD, Camera, audio and UEMEK
RM-13/33
Nokia Customer Care System Module Description
Page 8–8 Company Confidential 9240218 (Issue 1)
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