Only For Training And Service Purposes - LG KG270 Service Manual

3.1.1 Overview of E-GOLDvoice
The E-GOLDvoice is a GSM baseband modem including RF transceiver covering the low bands
GSM850 /GSM900 and high bands GSM1800 / GSM1900 bands.
E-GOLDvoice is Dual Band, therefore, it supports by default a low / high pair of bands at the same
time:
1. GSM850 / GSM1800
2. GSM850 / GSM1900
3. GSM900 / GSM1800
4. GSM900 / GSM1900
The E-GOLDvoice is optimized for voice-centric Mobile Phone applications.
The E-GOLDvoice is designed as a single chip solution that integrates the digital, mixed-signal, RF
functionality and a direct-to-battery Power Management Unit.
The transceiver consists of:
• Constant gain direct conversion receiver with an analog I/Q baseband interface
• Fully integrated Sigma/Delta-synthesizer capability
• Fully integrated two-band RF oscillator
• Two-band digital GMSK modulator with digital TX interface
• Digitally controlled crystal oscillator generating system clocks.
The E-GOLDvoice supports a direct battery connection, hence eliminating the need for an external
Power Management Unit. The E-GOLDvoice has different power down modes and an integrated
power up sequencer.
The E-GOLDvoice is powered by the C166®S MCU and TEAKLite® DSP cores. The operating
temperature range from -40C to 85C. It is manufactured using the 0.13 •Ïm CMOS process.
Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

3. TECHNICAL BRIEF
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LGE Internal Use Only