Voxtel VS600, Service Manual

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VS600 Service Manual
VOXTEL Technical Documentation 14
3.3 Base-band Parts Details
MT6219
The MT6219 is the baseband processing solution offered by MTK as part of the 32-bit
ARM7EJ-S RSIC processor chipset Family. The chip integrates a powerful DSP,
ARM7EJ-S processor, and extensive set of peripherals that support applications such
as MMS, EMS and MP3. The MT6219 allow advanced speech algorithms, such as
AMR and signal processing function such as echo suppression, cancellation and
noise reduction. The MT6219 supports pseudo-static RAM, page and burst flash
memories, USB, SD/MMC and devices such as camera modules. It can be divided
into three main subsystems.
●
MCU Control processor subsystem
ARM7EJ-S 32-bit RISC Processor
26/52 MHz operating frequency
JAVA hardware acceleration
512 KB zero-wait-state on-chip SRAM
●
Multi-media subsystem
JPEG codec
2D accelerator
Wavetable synthesis
MPEG-4/H.263 codec
Full speed USB 1.1
High throughput hardware re-size capable of tailoring image to arbitrary
MMC/SD, MS and MS PRO host controller
DSP recorder
●
User interface
6-row x 7-column keypad scanner
3 UARTs with hardware flow control and speed up to 921600 bps
7-channel auxiliary ADC
Six level or edge sensitive external interrupts
MT6305
The MT6305 is a power management system chip optimized for GSM handsets. It
contains seven LDOs, one to power each of the critical GSM sub-block. Sophisticated
controls are available for power-up during battery charging, keypad interface, and
RTC alarm. The MT6305 is optimized for maximum battery life, featuring a ground
current of one 107uA and 187uA when the phone is in standby and operation
respectively.
The MT6305 contains three open drain output switches for LED, alarm, and vibration