Em Asic Menelaus N4200; Em Asic Vilma D1420; Em Asic Betty N1310 - Nokia RX-44 Service Manual

RX-44
System Module
• Bluetooth data interface
• WLAN data interface
• SD interface (via Menelaus)
• USB interface (Via TUSB6010 USB transceiver to OMAP2420 NOR flash interface)
• I2C interface for temperature sensor, Keypad IO expander, ALS, RGB led controller
Power supply:
• Core voltage VCORE_APE=1.4V (in local mode) generated by Menelaus
• VCORE_APE is lowered to 1.05V in sleep mode
• I/O voltage VIO_APE=1.8V generated by Menelaus
Clock frequencies:
• SysClk=19.2 MHz as main clock provided by external oscillator G4850
• SleepClk=32.768 kHz as sleep clock provided by Vilma

EM ASIC Menelaus N4200

Menelaus is an auxillary energy management ASIC.
It acts in addition to AVilma and Betty.
Key functions:
• OMAP2420 Core supply generation
• OMAP2420 I/O supply generation
• OMAP2420 PLL block supply generation
• DDR/NAND Memory Core and I/O supply generation
• Camera modulue supply generation
• Level shifter and regulator for miniSD card
• Level shifter for internal eMMC

EM ASIC Vilma D1420

EM ASIC Vilma includes following functional blocks:
• Start up logic and reset control
• Charger detection
• Battery voltage monitoring
• 32.768kHz clock supply with external crystal
• Real time clock with external backup battery
• SIM card interface (Not used in RX-44)
• Stereo audio codecs and amplifiers (Not used in RX-44)
• A/D converter
• Regulators
• Vibra interface (Not used in RX-44)
• Digital interface (CBUS)

EM ASIC Betty N1310

EM ASIC Betty includes following functional blocks:
• Core Voltage supply generation for Hailstorm Display buffer D1510
Issue 1 COMPANY CONFIDENTIAL Page 7 –15
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