LG KU250 Service Manual - Page 38

3. TECHNICAL BRIEF 3.8.6. MSM6245 device audio processing features ■ Integrated wideband stereo CODEC ❏ 16-bit DAC with typical 88 dB dynamic range ❏ Supports sampling rates up to 48 kHz on the speaker path and 16 kHz on the microphone path ■ VR- Voice mail + voice memo ■ Acoustic echo cancellation ■ Audio AGC ■ Audio Codecs: AMR-NB, AAC, AAC Plus, Enhanced AAC Plus, Windows Audio v9, Real Audio 8 (G2) ■ Internal vocoder supporting AMR, FR, EFR, and HR 3.8.7. MSM6245 microprocessor subsystem ■ Industry standard ARM926EJ-S embedded microprocessor subsystem ❏ 16 kB instruction and 16 kB data cache ❏ Instruction set compatible with ARM7TDMI® ❏ ARM version 5TEJ instructions ❏ Higher performance 5 stage pipeline, Harvard cached architecture ❏ Higher internal CPU clock rate with on-chip cache ■ Java hardware acceleration ■ Enhanced memory support ❏ 75 MHz and 90 MHz bus clock for SDRAM ❏ 32-bit SDRAM ❏ Dual memory buses separating the high-speed memory subsystem (EBI1) from low-speed peripherals (EBI2) such as LCD panels ❏ 1.8 memory interface support for EBI1 and 1.8 V or 2.6 V memory interface support EBI2 ❏ NAND FLASH memory interface - 8/16-bit data I/O width NAND flash support - 1- or 4-bit ECC - 512-byte/2KB page-size support - 2 chip selects supported for NAND Flash ❏ Boot from NAND ❏ Low-power SDRAM (LP-SDRAM) interface ■ Internal watchdog and sleep timers 3.8.8. Supported interface features ■ USB On-the-Go core supports both slave and host functionality ■ Three universal asynchronous receiver transmitter (UART) serial ports ■ USIM controller (via UART) ■ Integrated 4-bit secure digital (SD) controller for SD and Mini SD cards ■ Parallel LCD interface ■ General-purpose I/O pins ■ External keypad interface - 39 -