Hitachi DVP 345 E Service Manual
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2 1. G ENERAL DESCRIPTION 1.1 ZR36768 The ZR36768 Disc Loader Controller and Decoder Device can control disc loaders and r\ ead bitstreams using the following media: DVD -ROM, DVDRW, CD -DA, CD -ROM, CD- R and CD-R/W discs. The device can decode bitstreams and process navigation data of t\ he following formats: DVD -Video, DVD -Audio, CD- DA, VCD (Video -CD), SVCD (Super Video -CD) and MP3. The features of this chip can be listed as follows: Disc loader control and bitstream processing · 8 analog inputs (low frequency) for servo errors and RF signals envelo\ pe monitoring · 11 actuators drive or control outputs. Two analog outputs through 11 bit\ s DACs (e.g. for the tracking and focus coils), and 9 PWM outputs divide d into two type groups: High frequency, uniform type PWMs (e.g. for the spindle and sled motor drives)\ , and lower frequency regular type PWMs, which can be used e.g. for programmed tray mo\ tion or RF amplifier parameter setting. · Processing of spindle an d sled position read-back devices · All servo loop closure, closed loop control and error handling. · Bitstream extraction using AGC, bit clock frequency detection and phase \ lock loop, adaptive threshold calculations, Viterbi bit decision, defect detection, fr ame sync detection and EFM/P conversion. · CD sub -code extraction and processing. · CD ECC for all CD types. CD EDC for Mode 1 discs · DVD ECC and EDC. · Track buffer and re -try management Decoding · Single chip solution for playback of DVD -Video, DVD -Audio Video -CD, Super Video- CD, CD- DA, and MP3 from CD -ROM, CD -R or CD -R/W. · Decoding and display of high resolution MPEG 1 and MPEG 2 still image se\ quences (including ASVs from DVD-Audio but without the transition effects). · Decoding of Dolby AC -3, DTS or MLP multi -cha nnel audio. · Decoding of MPEG 1 or MPEG 2 layer II mono, stereo, or multi -channel audio. Decoding of MPEG 1 or MPEG 2 Layer 3 (MP3) mono and stereo audio. · PCM and LPCM audio playback from DVD -Video, DVD-Audio, Video-CD and CD -DA. · Decoding and playback of sub- picture (including Highlight), and closed captions (line 21)\ data from DVD -Video discs. · Interlaced digital and analog video output or progressive analog video o\ utput. · NTSC and PAL standards. PAL playback of NTSC discs and NTSC playback of \ PAL discs. · Special modes support like pause, slow motion, fast forward and reverse. Post Processing · Audio down mixing, sample rate conversion, Dolby's pro -logic and 3D enhancement. · Karaoke mixing of decoded audio and two channels of input audio. · On-chip OSD engine wi th 32 color (24-bit YUV) palette, up to 8 levels of transparency; and capability of blinking regions and vertical scrolling. · On-screen and off -screen OSD memory regions for animation support. · 1/4 pixel and 1/4 line pan&scan · Horizontal and vertical up- and down-scaling with polyphase two -tap vertical and horizontal interpolation. Downloaded Free from http://www.free-service-manuals.com
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3· Letterbox and Pan-scan display aspect ratio conversion (16:9 to 4:3) · Automatic frame rate conversion (e.g., 3/2 pull down) and format conve\ rsion (16:9, 4:3, 1:1). · EIA-608 compatible modulation of line 21 (NTSC) or line 22 (PAL) closed captions data \ over the video output. · Edge adaptive, two fields, de -interlacing generating a progressive analog video output. Interfaces · 8-bit YUV 4:2:2 digital interlaced video output. · Composite, Y/C, YUV or RGB interlaced analog video output or component progressive analog video output (using 10 bits on -chip DACs) · Internally generated video sync signals and internally generated audio p\ ort clock signals. · 6/18/20/24 -bit I2S or EIAJ serial audio outputs. 16 bit I2S EIAJ serial audio input · 2 to 8 channels audio output. 2 channels audio input · S/PDIF output for compressed audio (including DTS) or reconstructed au\ dio (according to IEC 958 and its extensions). · Single 64 -Mbit, single 16 -Mbits and dual 16 Mbits SDRAMs (16 bits data) · Direct interface (through RF and servo amplifiers) to several types of\ disc loaders. · SW controlled GPIO to interface to IR remote control receiver, front pan\ el concentrator, audio DACs and ADC, etc., e.g. using I2C, SPI and other pro tocols. · 3 line serial general purpose slave interface (SSC) · 2 UART interfaces for CPU SW debug · JTAG interfaces for CPU, ADP and DSP SW debug Physical Features · Dual supply: 1.8V for the core and PLL, and 3.3V for the I/O and DACs. · 208 pin, PQFP package. · TTL I/O levels. 5V tolerance on many inputs. · Single 27MHz crystal/clock input. · 5 layer metal, 0.18 micron technology. · Less than 1.6 W power consumption during operation. · Several power- down modes 1.2 M EMORY 1.2.1 SDRAM Memory Interface The ZR36768 provides 16- bit interface to DRAM memory devices used as OSD, MPEG stream and video buffer memory for a DVD player. The maximum amount of m\ emory supported is 8 MB of Synchronous DRAM (SDRAM). The memory interface is configura\ ble in depth to support 64 -Mb addressin g. 1.3 D RIVE INTERFACES The ZR36768 supports d irect interface (through RF and servo amplifiers) to several types of disc loaders. 1.4 FRONT P ANEL The front panel is based around a Futaba VFD and a Princeton front panel\ controller chip, (PT6311). The ZR 36768 controls the PT16311 using several control signals, (clock, data,\ chip select). The infrared remote control signal is passed directly to \ the ZR36768 for decoding. Downloaded Free from http://www.free-service-manuals.com