Nokia RM-42 Service Manual
Also see for RM-42: Service manual
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Figure 110 ALS HW implementationTable 17 ALS resistor valuesSymbol R1 R2 R3 R4 R5 R6 R7 NTC-resValue 5 kOhm 15 kOhm 30 kOhm 50 kOhm470kOhm100kohm470kohm 47 kOhmASICsRAP3G ASICRAP3G ASIC is a 3G Radio Application Processor. RAM memory is integrated into RAP3G.In general RAP3G consists of three separate parts:• Processor subsystem (PSS) that includes the main processor and related functions• MCU peripherals that are mainly controlled by MCU• DSP peripherals that are mainly controlled by DSPRAP3G core voltage (1.4V) is generated from Tahvo VCORE and I/O voltage (1.8V) is from Retu VIO. The corevoltage in sleep mode is lowered to 1.05V.Retu EM ASICRetu EM ASIC 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• Regulators• Vibra interface• Digital interface (CBUS)RM-42System Module Nokia Customer Care9241872 (Issue 1) Company Confidential Page 9–25Copyright ©2005 Nokia. All Rights Reserved. |
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