C702
1221-7857 rev. 1
FUNCTIONAL OVERVIEW
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Technical Description
Baseband Part
Analog Baseband Controller
Power Management
N2000 (Vera)
This component is not replaceable on SL 4 because Baseband calibration is required.
The analog baseband controller is a mixed digital and analog device
that supports the following circuitry:
• Power management circuitry
• Voltage regulation circuitry
• Eight Low Dropout (LDO) regulators and low power regulator
• 600 mA integrated Buck regulator
• Boost step-up DC/DC converter for White Light Emitting Diode (WLED) driving
• Battery charging and communication circuitry
• Battery fuel gauging circuitry
• Analog-to-Digital Converter (ADC)
• SIM interface
• Six programmable LED drivers
• Accurate band gap reference
• Vibrator driver
• Real Time Clock (RTC)
• Eight-byte One-Time Programmable (OTP) memory
• Pulse Code Modulation (PCM) voice coder/decoder
• PCM audio coder/decoder
• Microphone interface
• Stereo line input
• Earphone driver
• Earpiece driver
• 8-
Ω
speaker driver / Stereo line output
The analog baseband controller is controlled by an I2C™ interface. It also comprises
the main power management circuits, equipped with a number of converters and
regulators for generating the required supply voltages.
Functional Blocks of the Analog Baseband Controller:
SEMC Troubleshooting Manual
86
(115)
Summary of Contents for C702
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