Hitachi-HTDK185UK-mc-sm 维修电路原理图.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 AV Receiver and Digital Terrestrial TV ReceiverOctober 2004SM0154HTD-K185UKRadioFans.CN 收音机爱 好者资料库A) HARDWARE 1. GENERAL DESCRIPTION 1.1 MT1379 The MT1379 Progressive Scan DVD-Player Combo Chip is a single-chip MPEG video decoding chip that integrates audio/video stream data processing, TV encod

5、er, four video DACs with Macrovision, copy protection, DVD system navigation, system control and housekeeping functions. The features of this chip can be listed as follows; General Features: * Progressive scan DVD-player combo chip * Integrated NTSC/PAL encoder, * Built-in progressive video output *

6、 DVD-Video, VCD 1.1, 2.0, and SVCD, * Unified track buffer and A/V decoding buffer, * Direct interface of 32-bit SDRAM, * Servo controller and data channel processing. Video Related Features: * Macrovision 7.1 for NTSC/PAL interlaced video, * Simultaneous composite video and S-video outputs, or comp

7、osite and YUV outputs, or composite and RGB outputs. * 8-bit CCIR 601 YUV 4:2:2 output. * Decodes MPEG video and MPEG2 main profile at main level. * Maximum input bit rate of 15Mbits/sec. Audio Related Features: * Dolby Digital (AC-3) and Dolby Pro Logic * Dolby Digital S/PDIF digital audio output *

8、 High-Definition Compatible Digital. (HDCD) decoding * Dolby Digital Class A and HDCD certified * SRS True Surround * CD-DA * MP3 RadioFans.CN 收音机爱 好者资料库1.2 Memory SDRAM Memory Interface The MT1379 provides a glueless 16-bit interface to DRAM memory devices used as OSD, MPEG stream and video buffer

9、memory for a DVD player. The maximum amount of memory support is 16 MB of Synchronous DRAM (SDRAM). The memory interface is configurable in depth to support 128-Mb addressing. The memory interface controls access to both external SDRAM memories, which can be the sole unified external read/write memo

10、ry acting as program and data memory as well as various decoding and display buffers. 1.3 Drive Interfaces The MT1379 supports the DV34 interface, and other RF and servo interfaces used by many types of DVD loaders. These interfaces meet the specifications of many DVD loader manufacturers. 1.4 Front

11、 Panel The front panel is based around a Futaba VFD and a common NEC front panel controller chip, (uPD16311). The MT1379 controls the uPD16311 using several control signals, (clock, data, chip select). The infrared remote control signal is passed directly to the MT1379 for decoding. 1.5 Rear Panel A

12、 typical rear panel is included in the reference design. This rear panel supports: Six channel or two channel audio outputs, Optical and coax SPDIF outputs, Composite, S-Video, and SCART outputs. The six-video signals used to provide CVBS, S-Video, and RGB are generated by the MT1379s internal video

13、 DAC, The video signals are buffered by external circuitry. Six channel audio output by the MT1379 in the form of three I2S (or similar) data streams. The S/PDIF serial stream is also generated by the MT1379 output by the rear panel. The six channel audio DACs (AK4356, PCM1606) are used for six chan

14、nel audio output with MT1379, and similarly AK4382A, CS4392 Audio DACs are used for two channel audio output with MT1379. 12-pin DDX board output jack gives out the amplified audio. Digital Audio is processed in the DDX-8228 IC and then amplified in the DDX-2050 Power Amplifier ICs. 2. SYSTEM BLOCK

15、DIAGRAM AND MT1379 PIN DECRIPTION 2.1 MT1379 Pin Description Pin Number Symbol Type Description 1 IREF Analog Input Current reference input. It generates reference current for data PLL. Connect an external 100K resistor to this pin and PLLVSS. 2 PLLVSS Ground Ground pin for data PLL and related anal

16、og circuitry 3 LPIOP Analog Output Positive output of the low pass filter 4 LPION Analog Output Negative output of the low pass filter 5 LPFON Analog output Negative output of loop filter amplifier 6 LPFIP Analog Input Positive input of loop filter amplifier 7 LPFIN Analog Input Negative input of lo

17、op filter amplifier 8 LPFOP Analog Output Positive output of loop filter amplifier 9 JITFO Analog Output RF jitter meter output 10 JITFN Analog Input Negative input of the operation amplifier for RF jigger meter 11 PLLVDD3 Power 3.3V power pin for data PLL and related analog circuitry 12 FOO Analog

18、Output Focus servo output. PDM output of focus servo compensator 13 TRO Analog Output Tracking servo output. PDM output of tracking servo compensator 14 TROPENPWM Analog Output Tray open output, controlled by microcontroller. This is PWM output for TRWMEN27hRW2=1 or is digital output for TRWMEN27hRW

19、2=0 15 PWMOUT1 Analog Output The 1st general PWM output 16 PWMOUT2 Analog Output The 2nd general PWM output 17 DVDD2 Power 2.5V power pin for internal fully digital circuitry 18 DMO Analog Output Disk motor control output. PWM output 19 FMO Analog Output Feed motor control. PWM output 20 DVSS Ground

20、 Ground pin for internal fully digital circuitry 21 FG Input 1 Motor Hall sensor input 22 HIGHAO Inout 2-16 MA, SR PU Microcontroller address 8 23 HIGHA1 Inout 2-16 MA, SR PU Microcontroller address 9 24 HIGHA2 Inout 2-1 6MA, SR PU Microcontroller address 10 25 HIGHA3 Inout 2-16MA, SR PU Microcontro

21、ller address 11 26 HIGHA4 Inout 2-16MA, SR PU Microcontroller address 12 27 HIGHA5 Inout 2-16MA, SR PU Microcontroller address 13 28 DVSS Ground Ground pin for internal digital circuitry 29 HIGHA6 Inout 2-16MA, SR PU Microcontroller address 14 30 HIGHA7 Inout 2-16MA, SR PU Microcontroller address 15

22、 31 AD7 Inout 2-16MA, SR Microcontroller address/data 7 32 AD6 Inout 2-16MA, SR Microcontroller address/data 6 33 ADS Inout 2-16MA, SR Microcontroller address/data 5 34 AD4 Inout 2-16MA, SR Microcontroller address/data 4 35 DVDD3 Power 3.3V power pin for internal digital circuitry 36 ADS Inout 2-16M

23、A, SR Microcontroller address/data 3 37 AD2 Inout 2-16MA, SR Microcontroller address/data 2 38 AD1 Inout 2-16MA, SR Microcontroller address/data 1 39 ADO Inout 2-16MA, SR Microcontroller address/data 0 40 IOAO Inout 2-16MA, SR PU Microcontroller address 0 / IO 41 IOA1 Inout 2-16MA, SR PU Microcontro

24、ller address 1 / IO 42 DVDD2 Power 2.5V power pin for internal digital circuitry 43 IOA2 Inout 2-16MA, SR PU Microcontroller address 2 / IO 44 Inout 2-16 MA, SR PU Microcontroller address 3 / IO 45 IOA4 Inout 2-16MA, SR PU Microcontroller address 4 / IO 46 IOA5 Inout 2-16MA, SR PU Microcontroller ad

25、dress 5 / IO 47 IOA6 Inout 2-16MA, SR PU Microcontroller address 6 / IO 48 IOA7 Inout 2-16MA, SR PU Microcontroller address 7 / IO 49 A16 Output 2-16MA, SRFlash address 16 50 A17 Output 2-16MA, SR Flash address 17 51 IOA18 Inout 2-16MA, SR SMT Flash address 18 /IO 52 IOA19 Inout 2-16MA, SR SMT Flash

26、 address 19 /IO 53 IOA20 Inout 2-16MA, SR SMT Flash address 20 / IO OR Video in Data PortB 0 54 APLLVSS Ground Ground pin for audio clock circuitry 55 APLLVDD3 Power 3.3V Power pin for audio clock circuitry 56 ALE Inout 2-16MA, SR PU, SMT Microcontroller address latch enable 57 IOOE# Inout 2-16MA, S

27、R SMT Flash output enable, active low / IO 58 IOWR# Inout 2-16MA, SR SMT Flash write enable, active low / IO 59 IOCS# Inout 2-16MA, SR PU, SMT Flash chip select, active low / IO 60 DVSS Ground Ground pin for internal digital circuitry 61 UP1_2 Inout 4MA, SR PU, SMT Microcontroller port 1-2 62 UP1_3

28、Inout 4MA, SR PU, SMT Microcontroller port 1-3 63 UP1_4 Inout 4MA, SR PU, SMT Microcontroller port 1-464 UP1_5 Inout 4MA, SR PU, SMT Microcontroller port 1-5 65 UP1_6 Inout 4MA, SR PU, SMT Microcontroller port 1-6 66 DVDD3 Power 3.3V power pin for internal digital circuitry 67 UP1_7 Inout 4MA, SR PU

29、, SMT Microcontroller port 1-7 68 UP3_0 Inout 4MA, SR PU, SMT Microcontroller port 3-0 69 UP3_1 Inout 4MA, SR PU, SMT Microcontroller port 3-1 70 INTO# Inout 2-16MA, SR PU, SMT Microcontroller interrupt 0, active low 71 IR Input SMT IR control signal input 72 DVDD2 Power 2.5V power pin for internal

30、digital circuitry 73 UPS 4 Inout Microcontroller port 3-4 74 UPS 5 Inout Microcontroller port 3-5 75 UWR# Inout 2-16MA, SR PU, SMT Microcontroller write strobe, active low 76 URD# Inout 2-16MA, SR PU, SMT Microcontroller read strobe, active low 77 DVSS Ground Ground pin for internal digital circuitr

31、y 78 RD7 Inout DRAM data 7 79 RD6 Inout DRAM data 6 80 RD5 Inout DRAM data 5 81 RD4 Inout DRAM data 4 82 DVDD2 Power 2.5V power pin for internal digital circuitry 83 RD3 Inout DRAM data 3 84 RD2 Inout DRAM data 2 85 RD1 Inout DRAM data 1 86 RDO Inout DRAM data 0 87 RWE# Output 2-16MA, SR DRAM Write

32、enable, active low 88 CAS# Output 2-16MA, SRDRAM column address strobe, active low 89 RAS# Output 2-16MA, SR DRAM row address strobe, active low 90 RCS# Output 2-16MA, SRDRAM chip select, active low 91 BAO Output 2-1 6MA, SR DRAM bank address 0 92 DVSS Ground Ground pin for internal digital circuitr

33、y 93 RD15 Inout 2-16MA, SR PU/PD, SMT DRAM data 15 94 RD14 Inout 2-16MA, SR PU/PD, SMT DRAM data 14 95 RD13 Inout 2-16MA, SR PU/PD, SMT DRAM data 13 96 RD12 Inout 2-16MA, SR PU/PD, SMT DRAM data 12 97 DVDD3 Power 3.3V power pin for internal digital circuitry 98 RD11 Inout 2-16MA, SR PU/PD, SMT DRAM

34、data 11 99 RD10 Inout 2-16MA, SR PU/PD, SMT DRAM data 10 100 RD9 Inout 2-16MA, SR PU/PD, SMT DRAM data 9 101 RD8 Inout 2-16MA, SR PU/PD, SMT DRAM data 8 102 DVSS Ground Ground pin for internal digital circuitry 103 CLK Output 2-1 6MA, SR DRAM clock 104 CLE Output 2-16MA, SR DRAM clock enable 105 RA1

35、1 Output 2-16MA, SR DRAM address bit 1 1 or audio serial data 3 (channel 7/8) 106 RA9 Output 2-16MA, SR DRAM address 9 107 RA8 Output 2-16MA, SRDRAM address 8 108 DMVDD3 Power 3.3V Power pin for DRAM clock circuitry 109 DMVSS Ground Ground pin for DRAM clock circuitry 110 RA7 Output 2-16MA, SRDRAM a

36、ddress 7 111 DVDD3 Power I % 3.3V power pin for internal digital circuitry 112 RA6 Output 2-16MA, SR DRAM address 6 113 RA5 Output 2-16MA, SR DRAM address 5 114 RA4 Output 2-16MA, SRDRAM address 4 115 DVSS Ground Ground pin for internal digital circuitry 116 DQM1 Output 2-16MA, SR Mask for DRAM inpu

37、t/output byte 1 117 DQMO Output 2-16MA, SR Mask for DRAM input/output byte 0 118 BA1 Output 2-16MA, SRDRAM bank address 0 119 RA10 Output 2-16MA, SR DRAM address lO 120 DVDD2 Power 2.5V power pin for internal digital circuitry 121 RAO Output 2-16MA, SR DRAM address 0 122 RA1 Output 2-16MA, SR DRAM a

38、ddress 1 123 RA2 Output 2-16MA, SR DRAM address 2 124 RA3 Output 2-16MA, SR DRAM address 3 125 DVSS Ground Ground pin for internal digital circuitry 126 RD31 Inout 2-16MA, SR PU/PD, SMT DRAM data 31 127 RD30 Inout 2-16MA, SR PU/PD, SMT DRAM data 30 128 RD29 Inout 2-16MA, SR PU/PD, SMT DRAM data 29 1

39、29 RD28 Inout 2-16MA, SR PU/PD, SMT DRAM data 28 130 DVDD3 Power 3.3V power pin for internal digital circuitry 131 RD27 Inout 2-16MA, SR PU/PD, SMT DRAM data 27 132 RD26 Inout 2-16MA, SR PU/PD, SMT DRAM data 26 133 RD25 Inout 2-16MA, SR PU/PD, SMT DRAM data 25134 RD24 Inout 2-16MA, SR PU/PD, SMT DRA

40、M data 24 135 DVSS Ground Ground pin for internal digital circuitry 136 DQM3 Output 2-1 6MA, SR Mask for DRAM input/output byte 3 137 DQM2 Output 2-1 6MA, SR Mask for DRAM input/output byte 2 138 RD23 Inout 2-16MA, SR PU/PD, SMT DRAM data 23 / Videoin Data PortA 7 139 RD22 Inout 2-16MA, SR PU/PD, SM

41、T DRAM data 22 / Videoin Data PortA 6 140 DVDD2 Power 2.5V power pin for internal digital circuitry 141 RD21 Inout 2-16MA, SR PU/PD, SMT DRAM data 21 / Videoin Data PortA 5 142 RD20 Inout 2-16MA, SR PU/PD, SMT DRAM data 20 / Videoin Data PortA 4 143 RD19 Inout 2-16MA, SR PU/PD, SMT DRAM data 19 / Vi

42、deoin Data PortA 3 144 RD18 Inout 2-16MA, SR PU/PD, SMT DRAM data 18 / Videoin Data PortA 2 145 DVSS Ground Ground pin for internal digital circuitry 146 RD17 Inout 2-16MA, SR PU/PD, SMT DRAM data 17 / Videoin Data PortA 1 147 RD16 Inout 2-16MA, SR PU/PD, SMT DRAM data 16 / Videoin Data PortA 0 148

43、ABCK Output 4MA Audio bit clock 149 ALRCK Inout 4MA, PD, SMT (1 ) Audio left/right channel clock (2) Trap value in power-on reset : 1 : use external 373 0: use internal 373 150 DVDD3 Power 3.3V power pin for internal digital circuitry 151 ACLK Inout 4MA Audio DAC master clock (384/256 audio sample f

44、requency) 152 MC DATA Input Microphone serial input 153 SPDIF Output 2-16MA, SR : ON/OFF SPDIF output 154 ASDATAO Inout 4MA PDSMT (1 ) Audio serial data 0 (left/right channel) (2) Trap value in power-on reset : 1 : manufactory test mode 0 : normal operation 155 ASDATA1 Inout 4MA PD SMT (1) Audio ser

45、ial data 1 (surround left/surround right channel) (2) Trap value in power-on reset : 1 : manufactory test mode 0 : normal operation 156 ASDATA2 Inout 4MA PD SMT (1 ) Audio serial data 2 (center/left channel) (2) Trap value in power-on reset : 1 : manufactory test mode 0 : normal operation 157 ASDATA

46、3 Inout 4MA PD SMT (1 ) Audio serial data 3 (surround left/surround right channel) (2) Trap value in power-on reset : 1 : manufactory test mode 0 : normal operation OR Videoin Data PortB 1 158 ASDATA4 Inout 4MA PD SMT (1 ) Audio serial data 4 (center/left channel) (2) Trap value in power-on reset :

47、1 : manufactory test mode 0 : normal operation OR Videoin Data PortB 2 159 DACVDDC Power 3.3V power pin for VIDEO DAC circuitry 160 VREF Analog input Bandgap reference voltage 161 FS Analog output Full scale adjustment 162 YUVO/CIN Output 4MA, SRVideo data output bit 0 / Compensation capacitor163 DA

48、CVSSC Ground Ground pin for VIDEO DAC circuitry 164 YUV1/C Output 4MA, SR Video data output bit 1 / Analog chroma output 165 DACVDDB Power 3.3V power pin for VIDEO DAC circuitry 166 YUV2/Y Output 4MA, SR Video data output bit 2 / Analog Y output167 DACVSSB Ground Ground pin for VIDEO DAC circuitry 1

49、68 YUV3/CVBS Output 4MA, SR Video data output bit 3 / Analog composite output 169 DACVDDA Power 3.3V power pin for VIDEO DAC circuitry 170 YUV4/G Output 4MA, SR Video data output bit 4 / Green or Y 171 DACVSSA Ground Ground pin for VIDEO DAC circuitry 172 YUV5/B Output 4MA, SRVideo data output bit 5

50、 / Blue or CB173 YUV6/R Output 4MA, SR Video data output bit 6 / Red or CR 174 ICE Input PD, SMT Microcontroller ICE mode enable 175 BLANK# Inout 4MA, SR SMT Video blank area, active low / Videoin Field_601 176 VSYN Inout 4MA, SR SMT Vertical sync / Videoin Vsync_601 177 YUV7 Inout 4MA, SR SMT Video