LG KF750 Service Manual page 21

3. TECHNICAL BRIEF
• Multi-media Processor(MMIC : ZR3453X )
- The ZR3453X is an advanced multimedia coprocessor for cellular devices. ZR3453X is an MCP
that includes a multimedia core and SDRAM memory chip. The multimedia core performs audio
and video recording, playback, and editing; still image capture (DSC), viewing, and editing;
MIDI/MP3 playback (for ring tones); 3D acceleration (for gaming). The memory chip in the MCP is
a 16MB (2MB) mobile SDRAM (that can be enlarged by packaging to 64MB), used both for
program code and for working data (both stream data and frame buffers).
• WCDMA subsystem
- The digital baseband controller WCDMA subsystem incorporate a WCDMA modem
- An interface to the WCMDA together with memory control and an internal single port RAM. The
WCDMA subsystem has three AHB slave interfaces.
- The Ericsson DB 3150 also includes HSDPA class 6 functionality.
- The WCDMA subsystem is handled and provided by Ericsson.
• XGAM subsystem
- The XGAM subsystem is a graphics acceleration module that provides hardware support in the
creation of visual imagery and the transfer of this data to a display. The XGAM also provides
support for connecting a Camera module. The visual data could be graphics, still images, or video.
- The XGAM subsystem is handled and provided by Ericsson.
• Operation and Services
- I 2 C™ Interface
- SIM Interfaces
- General Purpose I/O (GPIO) Interface
- External Memory Interface that supports NAND, NOR, PSRAM, SDRAM
- JTAG
- RTC
- ETM (in Prototype Package)
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Only for training and service purposes