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Internal audio
The internal audio components are used in these modes
MIC1
MIC2
EARPICE
SPEAKER
HPH_OUT
RF description
Receiver (RX)
An analogue signal is received by the phone's antenna. The signal is converted to a digital signal and is then
transferred further to the baseband (eg. to the earpiece).
The receiver functions are implemented in the QSC6030 RF block. Signals with different frequencies take
different paths, therefore being handled by different components.
Transmitter (TX)
The digital baseband signal (eg. from the microphone) is converted to an analogue signal, which is then
amplified and transmitted from the antenna. The frequency of this signal can be tuned to match the bandwidth
of the system in use (eg. CDMA CELL band).
The transmitter functions are implemented in the QSC6030 RF block. Even though the CELL/ signals are sent via
different components, the principles of the transmission are the same.
QSC6030 System Module Description
Page 5-12
Hand Portable Mode
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COMPANY CONFIDENTIAL
Copyright © 2008 Nokia. All rights reserved.
Headset Mode
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RM-377
System Module Description
Hand Free Mode
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