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REPARACIONES DE DVD

Controladoras Basadas en el Chipset
MediaTek MT1389XX

   




 
Características
 
* Super Integration DVD player single chip
- Servo controller and data channel processing
- MPEG-1/MPEG-2/JPEG video decoding
- AC-3/DTS/DVD-Audio audio decoding
- Unified track buffer and A/V decoding buffer
- Video processing for scaling and video quality enhancement
- OSD & Sub-picture decoding
- Built-in clock generator
* Speed Performance on Servo and Decoding
- DVD-ROM up to 8XS
- CD-ROM up to 24XS
- Built-in a frequency programmable clock to mP and RSPC Decoder to optimize the performance over power
* Channel Data Processor
- Provides interface with analog front-end processor
- Analog data slicer for small jitter capability
- Built-in high performance data PLL for channel data demodulation
- EFM/EFM+ data demodulation
- Enhanced channel data frame sync protection & DVD-ROM sector sync protection
* Servo Control and Spindle Motor Control
- Programmable frequency error gain and phase error gain of spindle PLL to control spindle motor on CLV and CAV mode
- Provide a varipitch speed control for CLV and CAV mode
- Built-in ADCs and DACs for digital servo control
- Provide 2 general PWM
- Tray control can be PWM output or digital output
- Built-in DSP for digital servo control
* Host Micro controller 
- Built-in 8032 micro controller
- Built-in internal 373 and 8-bit programmable lower address port
- 256-bytes on-chip RAM
- Up to 1M bytes FLASH-programming interface
- Supports 5/3.3-Volt. FLASH interface
- Supports power-down mode
- Supports additional serial port
* DVD-ROM/CD-ROM Decoding Logic
- Supports CD-ROM Mode 1, CD-ROM XA Mode 2 Form 1, CD-ROM XA Mode 2 Form 2, and CD-DA formats
- High-speed ECC logic capable of correcting one error per each P-codeword or Q-codeword
- Automatic sector Mode and Form detection
- Automatic sector Header verification
- 8-bit counter for decode completion check
- Programmable descrambling and error correction schemes
- Automatically repeated error corrections
- 8-bit C2 Pointer counter
- Decoder Error Notification Interrupt that signals various decoder errors
- Provide error correction acceleration
* Buffer Memory Controller
- Supports 16Mb/32Mb/64Mb SDRAM
- Supports 16-bit/32-bit SDRAM data bus interface
- Build in a DRAM interface programmable clock to optimize the DRAM performance
- Provide the self-refresh mode SDRAM
- Programmable DRAM access cycle and refresh cycle timings
- Block-based sector addressing
- Programmable buffering counter for buffer status tracking
- Maximum DRAM speed is 133MHz
- Support 5/3.3-Volt. DRAM Interface
* Video Decode
- Decodes MPEG1 video and MPEG2 main level, main profile video (720/480 and 720x576)
- Maximum input bit-rate of 15Mbits/sec
- Smooth digest view function with I, P and B picture decoding
- Baseline, extended-sequential and progressive JPEG image decoding
- RLE and non-RLE BMP image decoding
* Video/SPU/HLI Processor
- Arbitrary ratio vertical/horizontal scaling of video, from 0.25X to 256X
- 256/16/4/2-color bitmap format OSD
- 256/16 color RLC format OSD
- Automatic scrolling of OSD image
- Warp mode of OSD can reduce memory required
- Dual Sub-picture decoder
- Provides 4-color/32x32-pixel hardware cursor
- Fade-in, Fade out, and Wipe functions as specified in the DVD-Audio Specification and other slide show transition effects
* Audio Processing
- Decoder format supports:
Dolby Digital (AC-3) decoding
DTS decoding
MLP decoding for DVD-Audio
MPEG-1 layer 1/layer 2 audio decoding
MPEG-2 layer1/layer2 2-channel audio decoding
Dolby Pro Logic decoding
HDCD decoding
- Up to 6 channel linear PCM output for DVD Audio / DVD Video
- Downmix function
- Support IEC 60958/61937 output:
PCM / bit stream / mute mode
Custom IEC latency up to 2 frames
- Pink noise and white noise generator
- Karaoke functions:
Microphone echo with adjustable echo level, echo -depth and delay length
Microphone tone control with three custom second-order IIR filter
Vocal mute/vocal assistant
Key shift up to +/- 8 keys controlled by 1/2 key
- Channel equalizer
- 3D surround processing include virtual surround and speaker separation
- Power-down control
* Outline
- 208-pin LQFP package
- 3.3/2.5-Volt. Dual operating voltages

Ejemplo del uso del Chipset Vaddis 8xx

 

 Importante !

Servisystem te invita a participar de su grupo de debates acerca de todos los temas referentes a los reproductores de DVD. Allí podrás expresarte, opinar, aportar nuevas formas y métodos de reparación de equipos, podrás organizarte con los demás miembros del grupo para armar mesas de charla e intercambio. Podrás solicitar ayuda técnica en el FORO Principal del sitio, donde expondremos ideas e intercambiaremos información que creamos útil.

Intentamos crear un espacio ordenado, para obtener información de la experiencia de muchos.

Súmate al grupo ! Serás Bienvenido.



 

 





 

 

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