Asics; Rapidoyawe; Em Asic N2300 (Betty); Em Asic N2200 (Avilma) - Nokia MOBILE TERMINAL Service Manual

RM-356
System Module and User Interface
Figure 72 Digital Ambient light sensor schematics

ASICs

RAPIDOYAWE

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

EM ASIC N2300 (Betty)

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 driver for backlights
• Digital interface (CBUS)

EM ASIC N2200 (Avilma)

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
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