Analog Baseband(Abb) Processor; General Description - LG L1150 Service Manual

3.3. Analog Baseband(ABB) Processor

3.3.1. General Description

IOTA is Analog Baseband (ABB) Chip supports GSM900, DCS1800, PCS1900, GPRS Class 10 with
Digital Baseband Chip(Calypso G2). IOTA processes GSM modulation/demodulation and power
management operations.
Block Description
- Audio Signal Processing & Interface
- Baseband in-phase(I), quadrature(Q) Signal Processing
- RF interface with DBB (time serial port)
- Supply voltage regulation
- Battery charging control
- Switch ON/OFF
- 3V SIM card Interface
- 4 internal & 4external ADC channels
Figure 11. Top level block diagram of the IOTA(TWL3014CGGM)
3. H/W Circuit Description
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