Technical Brief; Digital Baseband(Dbb)& Multimedia Processor; General Description - LG U8120 Service Manual

3. TECHNICAL BRIEF

3. Technical Brief
3.1 Digital Baseband(DBB) & Multimedia Processor

3.1.1 General Description

A. Features
• CPU ARM946 running at 104 MHz
- 32 kB Instruction Cache, 16 kB Data Cache, 128 kB Instruction TCM and 128 kB Data TCM
- 8 channel DMAC
• DSP C55x (LEAD3) Megastar (MGS3_2.0B) running at 170 MHz
- 144 kWord ROM, 32 kWord DARAM, 32 kWord SARAM
- 7 channel DMAC
- Dedicated API channel to DSP memory (not locked up to other DMA channels)
• UMTS Access
- Support for WCDMA/GSM Dual Mode
- GSM/GPRS network signaling (from Layer 1 to 3)
- WCDMA Ciphering and Integrity
- High Speed Serial Link (HSSL) to the WCDMA Modem (at Layer 1)
- GSM AMR
- Multislot Class 8
- HSCSD 14.4 kb/s
• MMI
- Keypad Interface
- Tone Generator Interface
- Camera Data and Programmable Display Interfaces
- Enhanced graphics support for QCIF display
• Operation and Services
- I 2 C™ Interface
- SIM Interfaces
- General Purpose I/O (GPIO) Interface
- External Memory Interface that supports FLASH, SRAM and PSRAM
- JTAG
- RTC
- ETM (in Prototype Package)
• Data Communication
- IrDA ® (SIR)
- UARTs (ACB, EDB (RS232))
- Slave USB
• Package
- 12 by 12 mm 289 pin FPBGA Production Package
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