Hitachi-HTDK-170-Service-Manual电路原理图.pdf

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1、CAUTION:Before servicing this chassis, it is important that the service technician read the “Safety Precautions” and “Product Safety Notices” in this service manual.ATTENTION:Avant deffectuer lentretien du chassis, le technicien doit lire les Prcautions de scurit et les Notices de scurit du produit

2、prsents dans le prsent manuel.VORSICHT:Vor ffnen des Gehuses hat der Service-Ingenieur die Sicherheitshinweise“ und Hinweise zur Produktsicherheit“ in diesem Wartungshandbuch zu lesen.SERVICE MANUALMANUEL DENTRETIENWARTUNGSHANDBUCHData contained within this Service manual is subject to alteration fo

3、r improvement.Les donnes fournies dans le prsent manuel dentretien peuvent faire lobjet de modifications en vue de perfectionner le produit.Die in diesem Wartungshandbuch enthaltenen Spezifikationen knnen sich zwecks Verbesserungen ndern.SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

4、DVD DIGITAL THEATRE SYSTEMJuly 2003No. 0153HTDK170EHTDK170EUK21. GENERAL DESCRIPTION1.1 ES60X8The ES6008/ES6018 Vibratto DVD processor is a single-chip MPEG video decoding chipthat integrates audio/video stream data processing, TV encoder, four video DACs withMacrovision. copy protection, DVD system

5、 navigation, system control and housekeepingfunctions.The Vibratto DVD processor is built on the ESS proprietary dual CPU ProgrammableMultimedia Processor (PMP) core consists of 32-bit RISC and 64-bit DSP processors and offersthe best DVD feature set.These features can be listed as follows:General F

6、eatures: Single-chip DVD processor based on ESS proprietary dual CPU PMP core. Integrated NTSC/PAL encoder. Four integrated 10-bit video DACs. DVD-Video, VCD 1.1, 2.0, and SVCD Interface for ATAPI devices and A/V DVD loaders. Interface for Compact Flash, Memory Stick and SmartMedia cards. Direct int

7、erface of 8- or 16-bit SDRAM up to 128-Mb capacity. Direct interface for up to four banks of 8-/16-bit EPROM or Flash EPROM for up to 16-MBcapacity.Video Related Features: Macrovision 7.1 for NTSC/PAL interlaced video. Simultaneous composite video and S-video outputs, or composite and YUV outputs, o

8、rcomposite and RGB outputs. 8-bit CCIR 601 YUV 4:2:2 output. On-Screen Display (OSD) controller with 3-bit blending provides display with 256 colors in 8degrees of transparency. Subpicture Unit (SPU) decoder supports karaoke lyric, subtitles, and EIA-608 compliant Line21 Captioning.Audio Related Fea

9、tures: Dolby Digital (AC-3) and Dolby Pro Logic.3 High-Definition Compatible Digital. (HDCD) decoding. Dolby Digital Class A and HDCD certified. CD-DA. MP3.1.2 MEMORY1.2.1 System SRAM InterfaceThe system SRAM interface controls access to optional external SRAM, which can beused for RISC code, stack,

10、 and data. The SRAM bus supports four independent address spaces,each having programmable bus width and wait states. The interface can support not only SRAM,ROM/EPROM and memory-mapped I/O ports for standalone applications are also supported.1.2.2 DRAM Memory InterfaceThe Vibratto provides a glueles

11、s 16-bit interface to DRAM memory devices used as videomemory for a DVD player. The maximum amount of memory supported is 16 MB of SynchronousDRAM (SDRAM). The memory interface is configurable in depth to support 128-Mb addressing.The memory interface controls access to both external SDRAM or EDO me

12、mories, which can bethe sole unified external read/write memory acting as program and data memory as well asvarious decoding and display buffers.1.3 DRIVE INTERFACESThe Vibratto supports the AT Attachment Packet Interface (ATAPI), Integrated DriveElectronics (IDE), and other parallel and serial port

13、 interfaces used by many types of DVDloaders. These interfaces meet the specifications of many DVD loader manufacturers. An ATAPIdrive is connected via the standard 34 pin dual row PC style IDE header1.4 FRONT PANELThe front panel is based around an Futaba VFD and a common NEC front panelcontroller

14、chip, (uPD16311). The ES6008/ES6018 controls the uPD16311 using several controlsignals, (clock, data, chip select). The infrared remote control signal is passed directly to theES60X8 and 8051 for decoding.1.5 REAR PANELOutputs and Inputs at the AV1000 rear panel:- Left, Right and Subwoofer (active)

15、audio outputs.- Left, Right and CVBS input.- Composite, S-Video, and SCART outputs.- Input SCART- 5x15W 8ohms (L,R,SL,SR,C) + 1x25W 4ohms Subwoofer outputs.- AM / FM Tuner Antenna input- 220-240 V 50Hz AC Power inputThe six-video signals used to provide CVBS, S-Video, and RGB are generated by the ES

16、60X8sinternal video DAC. The video signals are buffered by external circuitry.Six channel audio output by the ES6018 in the form of three I2S (or similar) data streams. TheS/PDIF serial stream is also generated by the ES60X8 output by the rear panel. A six channelaudio DAC (AK4356) are used for six

17、channel audio output with ES6018, and similarly oneAK4362A Audio DAC is used for two channel audio output with ES6008 or ES6018.42. SYSTEM BLOCK DIAGRAM and ES6008/18 PIN DESCRIPTION2.1 ES6008/18 PIN DESCRIPTION56789102.1 SYSTEM BLOCK DIAGRAMSystem block diagram is shown in the following figure:3. A

18、UDIO OUTPUTThe ES6008 supports two-channel analog audio output while ES6018 supports six-channelanalog audio output. In a system configuration with six analog outputs, the front left and rightchannels can be configured to provide the stereo (2 channel) outputs and Dolby Surround, or theleft and righ

19、t front channels for a 5.1 channel surround system.The ES6008 also provides digital output in S/PDIF format. The board supports both optical andcoaxial S/PDIF outputs.AV1000 Has also 5.1 channel Class-D amplifier outputs to 8 ohms satelites and 4 ohmssubwoofer.4 AUDIO DACSThe ES6008/18 supports seve

20、ral variations of an I2S type bus, varying the order of the data bits(leading or no leading zero bit, left or right alignment within frame, and MSB or LSB first) ispossible using the ES6008/18 internal configuration registers. The I2S format uses four stereodata lines and three clock lines. The I2S

21、data and clock lines can be connected directly to one ormore audio DAC to generate analog audio output.The two-channel DAC is an AKM AK4382A. The DACs support up to 192kHz sampling rate.The outputs of the DACs are differential, not single ended so a buffering circuit is required. Thebuffer circuits use National LM833 op-amps to perform the low-pass filtering and the buffering.