Asics; Rapidoyawe; Em Asic Betty N2300; Em Asic Vilma N2200 - Nokia RM-333 Service Manual

RM-333; RM-334; RM-335
System Module and User Interface
Figure 77 Block diagram of Naviscroll Interface

ASICs

RAPIDOYAWE

RAPIDOYAWE ASIC (D2800) is a die-stacked Processor (RAPIDO) with 3G HDSPA logic (YAWE). RAM memory is
integrated into RAPIDO.

EM ASIC BETTY N2300

The EM ASIC (N2300) includes the following functional blocks:
• Core supply generation
• Charge control circuitry
• Level shifter and regulator for USB/FBUS
• Current gauge for battery current measuring
• LED control for display backlighting
• Digital interface (CBUS)

EM ASIC VILMA N2200

The EM ASIC (N2200) includes the following functional blocks:
• Start up logic and reset control
• Charger detection
• Battery voltage monitoring
• 32.768kHz clock with external crystal
• Real time clock with external backup battery
• SIM card interface
• Stereo audio codecs and amplifiers
• A/D converter
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