Digital Baseband(Dbb/Msm7200A); Bb Technical Description - LG GM750 Service Manual

3. Technical Brief

3. BB Technical Description

3.7 Digital Baseband(DBB/MSM7200A)

3.7.1 General Description
A. Features(MSM7200A)
Support for multimode operation – WCDMA(UMTS),GSM/GPRS,EDGE, HSDPA
The ARM1136-J microprocessor can operate at up to 528 MHz.
The ARM926EJ-S microprocessor can operate up to 256 MHz.
Internal 256M Bits stacked DDR memory.
Java hardware acceleration for faster Java-based games and other applets.
Supports low-power, low-frequency crystal to enable TCXO shutoff.
Integrated USIM Controller for direct interface to USIM card
Software-controlled power management feature
Integrated Bluetooth 2.0 baseband processor for wireless connectivity to peripherals
High-speed, serial mobile-display, digital interface that optimizes the interconnection cost
between the MSM device and the LCD panel
Receive chain diversity support for WCDMA, providing improved capacity and data throughput
USB OTG core supports both slave and limited host functionality
High-speed USB link
Integrated wideband stereo CODEC for digital audio applications
Direct interface to digital camera module with video front end (VFE) image processing
Vocoder support (GSM-HR, FR, EFR, AMR, W-AMR, and 4GV)
Advanced 15 × 15 × 1.4 mm, 0.5 mm pitch, 543-pin lead-free CSP packaging technology
HSDPA Features
- supports release 5, December 2004 standard for HSDPA
- HSDPA enables PS data speeds up to 7.2 Mbps on the downlink
WCDMA Features
- supports release 99 June 2004 of the W-CDMA FDD
standard
- PS data rates supporting 384kbps DL / 384kbps UL
- CS data rates supporting 64kbps DL / 64kbps UL
- AMR (all rates)
GSM Features
- Voice features (FR,EFR,AMR,HR)
- Circuit-switched data features(9.6K,14.4K,Fax)
GPRS Features
- Simple Class A operation
- Multi-slot class 12 data services
- CS schemes CS1,CS2,CS3,CS4
EDGE Features
- EDGE E2 power class for 8PSK
- Simple Class A, multi-slot class 12
- Downlink/Uplink coding schemes (CS1-4, MCS1-9)
Operation and Services
- LCD & Camera Interface
- USIM Interface
- Dual Memory Buses(EBI1-SDRAM & EBI2-NAND Flash)
- External Memory Interface (Micro SD)
Data Communication
- Bluetooth
- Slave USB
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Only for training and service purposes