NAD-T753-avr-sm 维修电路原理图.pdf

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1、NADSERVICE MANUALT 753T 753Surround Sound ReceiverSurround Sound ReceiverDRAFT DATE: 20 FEB 2004RadioFans.CN 收音机爱 好者资料库2SAFETY INFORMATIONAH VERSIONC VERSIONRadioFans.CN 收音机爱 好者资料库3SERVICE SAFETY PRECAUTIONS1. Replacing the fusesCAUTION:FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY

2、WITH SAME TYPE OFFUSE.Reference DesignatorPart NumberDescriptionF751*AH33-0191001-00-88Fuse 10A 250V Time Lag 5x20 MM UL/CSAF751*C33-0181006-00-88Fuse 6.3A 250V Time Lag 5x20 MMUL/CSA/SEMKO/VDEF752*AH33-0111006-00-48Fuse 1.6A 250V Time Lag 5x20 MMUL/CSA/VDE/SEMKOF752*C33-0151006-00-48Fuse 800mA 250V

3、 Time Lag 5x20 MMUL/CSA/VDE/SEMKONOTE: : USA, CANADIAN MODEL ONLY.: EUROPEAN MODEL ONLY.2. Safety check out(Only U.S.A. model)Before returning the product to the customer, make leakage current or resistance measurements to determinethat exposed parts are acceptably insulated from supply circuit.CONT

4、ENTSDESCRIPTIONPAGESPECIFICATIONS. 4 - 5REAR PANEL / FRONT PANEL VIEW . 6DISASSEMBLY INSTRUCTIONS . 7WIRING DIAGRAM. 8BLOCK DIAGRAM. 9SPECIAL FUNCTION . 10DETAILS & WAVEFORMS ON SYSTEM & TEST & DEBUGGING . 10ADJUSTMENT POINTS DIAGRAM / AMPLIFIER ADJUSTMENT .11PCB LAYOUT . 12 - 26SCHEMATIC DIAGRAM .

5、27 - 43IC BLOCK DIAGRAM . 44 - 51EXPLODED VIEW. 52 - 53EXPLODED VIEW PARTS LIST. 54 - 55ELECTRICAL PARTS LIST . 56 - 68PACKING DIAGRAM . 69VERSION HISTORY . 70Parts marked with the symbol are critical with regard to the risk of fire and electric shock.Replace only with parts recommended by the manuf

6、acturer.4SPECIFICATIONSPOWER AMPLIFIER SECTIONRated distortion(Rated power level into 8 ohms, THD 20 Hz-20 kHz FL/C/FR) 0.1 %(Rated power level into 8 ohms, THD 20 Hz-20 kHz SL/SR/BS) 0.1 %Input Sensitivity(ref. 8 ohms, 1 kHz)127 20 mVS/N Ratio(A-wtd, 1kHz, 1 W, 8 ohm, SL/SR/BL) - 72 dBFrequency Res

7、ponse(20 Hz - 20 kHz)0 1.0 dBChannel Balance(1 dB to -40 dB, 1 kHz) 2 dB(-41 dB to -50 dB, 1 kHz) 3 dBAudio muting at 1 kHz 55 dBSubwoofer out, 500 mV in (THD at 2 V O/P, 100 Hz) 0.5 %Crosstalk(500 mV input, 10 W, 1 kHz) -57 dBControlsBass(at 500 mV in, 1 W out, 100 Hz) 10 dB 2 dBTreble(at 500 mV in

8、, 1 W out, 10 kHz) 10 dB 2 dBDOLBY DIGITAL SECTIONChannel Difference(FL ref. Track 30) 1.2 dBFrequency Resporse at Dolby config.2SL Track 46 200 - 20 kHz 0.8 dBSR Track 47 200 - 20 kHz 0.8 dBC Track 44 200 - 20 kHz 0.8 dBHarmonic Distortion(1 W, Audio LPF, Dolby Congfig 1)FL Track 65 997 Hz 0.08 %FR

9、 Track 67 997 Hz 0.08 %SL Track 68 997 Hz 0.08 %SR Track 69 997 Hz 0.08 %C Track 66 997 Hz 0.08 %S/N Ratio(31 for O/P 1 W, Track 35)CCIR / ARM 65 dBAudio LPF 70 dBA-wtd 70 dBChannel Separation(1 W, 20 kHz LPF)Track 65 997 Hz 60 dBDOLBY PRO LOGIC II SECTIONFrequency ResporseI/P mode : L, R: 1 V in, 1

10、 W, Ch L/R40 Hz0 2.0 dB20 Hz0 2.0 dBI/P mode : L=R: 1 V in, 1 W, Ch /L/R40 Hz0 2.0 dB Ch C20 kHz0 2.0 dBI/P mode : L=-R: 1 V in, 1 W, Ch SL/SR40 Hz0 2.0 dB20 kHz0 2.0 dBS/N Ratio (200 mV in, 1 W, A-WTD w/ 1 k termination)I/P mode : L, R: 1 kHz, Ch L/R 65 dBI/P mode : L=R: 1 kHz, Ch C 65 dBI/P mode :

11、 L=-R: 1 kHz, Ch SL/SR 65 dBTHD (2.2 V in, 1 W, w/ 80 kHz LPF, 1 kHz) 0.2 %5DTS SECTIONOutput Level (Vol 0 dB): FL/FR/C/SL/SRTrack 61 kHz0.3 1.3 WChannel Difference (FL ref): FL/FR/C/SL/SRTrack 61 kHz 1.0 dBHarmonic Distortion (Audio Filter) : FL/FR/C/SL/SRTrack 10-14 1 kHz 0.08 %Frequency Response

12、(20 Hz to 20 kHz)Track 26-30+2/-1.5Subwoofer Output Level1 kHz ref at pre-out (FL)Play Track 10, charge to 1512.5 1.5 dBAM TUNER SECTIONInput level is expressed as the reading in open circuitof 75-ohm source impedance signal generatorUsable sensitivity(999/1000 kHz) 30 dBuVS/N Ratio(5 mV in) 38 dBTH

13、D(5 mV in) 3 %IF Rejection(450 kHz) 36 dBImage Rejection(F+2xIF) 28 dBSelectivity 17 dBOutput170 -20/+30 mVLoop sensitivity(20 dB S/N)999/1000 kHz 66 dB603/600 kHz 66 dB1404/1400 kHz 66 dBFrequency Response(100 - 2.3 kHz, 5 mV) 6 dBFM TUNER SECTION*C*AHInput level is expressed as the reading in open

14、 circuitof 75-ohm source impedance signal generatorUsable sensitivity(98 MHz) 15 dBV 15 dBuvS/N Ratio(60 dB, IHF wtd)Mono 63 dB 63 dBStereo 63 dB 63 dBFrequency Response(20 Hz - 15 kHz, 60 dB)0 1.5 dB0 1.5 dBChannel Separation(60 dB)100 Hz 30 dB 30 dB1 k 38 dB 38 dB10 kHz 30 dB 30 dBAlternate Channe

15、l Selectivity (40 dB, 400 kHz) 60 dB 45 dBCapture Ratio(40 dB) 3 dB 3 dBAM Suppression (60 dB, 100% Mod. FM, 30% Mod. AM) 48 dB 48 dBImage Rejection(119.4 MHz) 65 dB I.F. Rejection(10.7 MHz) 78 dBPilot Suppression(98 MHz) 60 dB 60 dBTHD (60 dB, L=R 75 kHz for AH, 40 kHz Dev for C)Mono 0.25 % 0.25 %S

16、tereo 0.35 % 0.35 %Auto-Search SensitivityOn 24 dB 24 dBOff 15 dB 15 dBRDS decode Sensitivity 26 dB PHYSICAL SPECIFICATIONSDimensions (Width x Height x Depth) 435 x 170 x 423 mmNet Weight 20.50 Kg (45.10 lbs)Shipping Weight 24.0 Kg (52.80 lbs)6FRONT PANELREAR PANEL / FRONT PANEL VIEWREAR PANEL1.FM &

17、 AM ANTENNA2.SOFT CLIPPING ON/OFF3.MONITOR OUT4.CD INPUT5.IR INPUT & OUTPUT6.+12V TRIGGER INPUT & OUTPUT7.COMPONENT VIDEO IN &COMPONENT VIDEO OUT8.DIGITAL AUDIO INPUT &DIGITAL AUDIO OUTPUT9.POWER SWITCH10.SWITCHED AC OUTLETS11.AC POWER INLET12.SPEAKERS A & B13.DVD, SAT, VCR, VIDEO 4 & VIDEO 514.MAIN

18、 IN / AUDIO PRE-OUTS /SUBWOOFER OUT15.TAPE INPUT & OUTPUT16.MS OUT (MULTISOURCE OUT)17.7.1 CH. INPUTS1.STANDBY SWITCH2.STANDBY LED3.AM / FM4.FM MUTE / MODE5.DISPLAY6.MEMORY7.PRESET DOWN / UP8.SEARCH DOWN / UP9.VFL DISPLAY10.VOLUME (SETUP)11.SOURCE DOWN / UP12.SURROUND MODE13.LEVELS14.TONE DEFEAT15.T

19、ONE CONTROLS16.SPEAKERS A & B17.VIDEO 6 INPUT18.PHONES7DISASSEMBLY INSTRUCTIONS1.Remove machine screws M4.0 x 8.0 (1 to 6) from the side panels.Remove tapping screw 3.0 x 8.0 (7 to 10) from the back panel.Refer to Figure No. 1.2.Pull both sides of the TOP COVER slightly outwards 11 and tilt approx.

20、35 and then removein the direction as indicated by the arrow 12. Refer to Figure No. 2.Figure No. 1Figure No. 28?UL1533 L=540mm82-0426135-03-XXCABLE ASSY 4 WAYS 2.5PUL2468 L=540mm?36-2028201-71-XXFFC CABLE 20 PINS P1.25L=200mm?36-3028061-71-XXFFC CABLE 30 PINSP1.25 L=60MM82-1026135-01-XXCABLE ASSY 1

21、0 WAYS #262.5P UL2877 L=540mm?82-0826135-04-XXCABLE ASSY 8 WAYS #26 2.5P?82-0426135-01-XXCABLE ASSY 4 WAYS#26 2.5P UL2877L=430mm? ?WIRING DIAGRAM9BLOCK DIAGRAM10SPECIAL FUNCTIONFEATUREKEYS PRESS ON FRONT PANELRESET FOR AH VERSIONVIDEO 6 +SOURCE UPRESET FOR C VERSIONVIDEO 6 + SOURCE DOWNNTSC / PAL SE

22、LECTIONVIDEO + MEMORYVFD ALL DISPLAYAUDIO 6 + TONE DEFEATAM FREQ. STEPAM/FM + FM MUTEDETAILS & WAVEFORMS ON SYSTEM TEST & DEBUGGINGM6759(U202) main clock is at 40MHz(X202)M6759(U201) main clock is at 40MHz(X201)UPPER - +5V supply to KEYBOARD when power upLOWER - RESET line (TCM810LENB713) whenpower

23、upUPPER - OUTPUT ENABLE(pin 24) of EPROM(W27C02) when changing SURROUND MODESLOWER -CHIP ENABLE(pin 22) of EPROM(W27C02) when changing SURROUND MODESSCLK (pin 43 of CS49326)LRCLK (pin 42 of CS49326)MCLK (pin30 of CS49326)NOTE: The waveforms are based on software version V1.27.11AMPLIFIER ADJUSTMENTI

24、dle Current1.Rotate R522 fully clockwise.2.Connect DC millivoltmeter to P501 (i.e. Across half of R523, 0.22 Ohm resistor).3.Turn on the unit.4.Adjust R522 for 1mV reading on voltmeter.5.Leave power on for at least 5 min, and check for idle current again.6.Repeat for other channels.CHANNELJUMPERVRFL

25、P501R522FRP502R545CP503R571SLP801R835SRP802R836BSP803R897ISC Sensitivity1.Connect 8 ohm loading to all channels.2.Rotate R881 fully clockwise.3.Load all channels at full power using 1kHz sine wave.4.At this time, monitor the THD of the SL,SR,BS output. Clipping should occur before full power achieve

26、d.5.Rotate R834 counter-clockwise slowly until the THD just below 0.1%.6.Repeat step 2-5 for R834 but monitor FL, FR & Center output.7.The procedure is finish at this step.8.Load all channels at full power using 1kHz sine wave with 4 ohm load.9.The clipping power(at THD 0.1%) should less than 85W.AD

27、JUSTMENT POINT DIAGRAMR522R545R571P501P502P503P803P802P801R835R836R897R881FRONT / CENTER AMPLIFIER BOARDSURROUND AMPLIFIER BOARDSECONDARY / ISC BOARD12PCB LAYOUTAUDIO BOARDPOWER SUPPLY (STANDBY) BOARD13COMPONENT VIDEO BOARD - COMPONENT SIDECOMPONENT VIDEO BOARD - COPPER SIDEDIGITAL BOARD - COMPONENT

28、 SIDE SIDEDIGITAL BOARD - COPPER SIDE14DSP BOARD - COPPER SIDEDSP BOARD - COMPONENT SIDE15FRONT / CENTER AMPLIFIER BOARD - COMPONENT SIDE16FRONT / CENTER AMPLIFIER BOARD - COPPER SIDE17SURROUND AMPLIFIER BOARD - COMPONENT SIDE18SURROUND AMPLIFIER BOARD - COPPER SIDE19KEY BOARD/POWER SWITCH- COMPONEN

29、T SIDEKEY BOARD/POWER SWITCH- COPPER SIDE20MAIN BOARD21MULTI-CHANNEL BOARD - COMPONENT SIDE22MULTI-CHANNEL BOARD - COPPER SIDE23PRE-OUT BOARD - COPPER SIDEPRE-OUT BOARD - COMPONENT SIDE24SPEAKER TERMINAL BOARDPOWER SWITCH / TRIGGER BOARDVIDEO 6 BOARD25SECONDARY / ISC BOARD - COMPONENT SIDESECONDARY

30、/ ISC BOARD - COPPER SIDE26S-VIDEO BOARDCOMPOSITE VIDEO BOARD27SCHEMATIC DIAGRAMAUDIO SWITCHRESISTORS : UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.28COMPONENT VIDEORESISTOR

31、S : UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.29E C B2SA2878E C B2SA933DTC123ESAE C BCOMPOSITE VIDEORESISTORS : UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTOR

32、S, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.30E C B2SA10152SC1815E C B2SA1016POWER SUPPLY (SECONDARY)NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. COMPONENTS MARKED “” ARE SAFETY CRITIAL PARTS.31POWER SUPPLY (STAND

33、BY)E C B2SC1815RESISTORS : F-FUSIBLE, UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. COMPONENTS MARKED “” ARE SAFETY CRITIAL PARTS.32TRIGGERRESISTORS : UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED,

34、 ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.33VIDEO 6RESISTORS : UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.34SPEAKER A & B35PREOUTE C

35、 BRN1241DTA114ESAE C BNOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.36DIGITAL INPUT / OUTPUT37E C B2SA933E C B2SC1740E C B2SC18152SC2878DTC144ESADTC123ESAE C BS-VIDEORESISTORS : UNLESS OTHERWISE SPECIFIED ARE CARBON FI

36、LM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.38E C B2SA10162SC2362B C E2SA16062SC4159B C E2SA20312SC5669E C B2SD600K2SD631KDTC123ESAE C BRNRNRNFRONT / CENTER CHANNEL POWER AMPLIFIERNOTE:1. RESISTORS, UNLESS OTHERWI

37、SE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.3. COMPONENTS MARKED “” ARE SAFETY CRITIAL PARTS.RESISTORS : RN-CERAMIC CASE, MO-METAL OXIDE, UNLESSOTHERWISE SPECIFIED ARE CARBON FILM.39RNRNRNE C B2SC2362E C B2SA10152SA1815B C E2SA16062SC4159B C E2SA203

38、12SC5669E C B2SD600K2SD631KDTC123ESAE C BE C B2SA1016K2SC2362E C B2SC1740SE C B2SB772SURROUND CHANNEL POWER AMPLIFIERRESISTORS : RN-CERAMIC CASE, MO-METAL OXIDE, UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS O

39、THERWISE SPECIFIED, ARE 50V, 10%.3. COMPONENTS MARKED “” ARE SAFETY CRITIAL PARTS.40E C B2SC1815DSPNOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.41E C B2SC1815E C B2SC1015KEYBOARDNOTE:1. RESISTORS, UNLESS OTHERWISE SPE

40、CIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 5%.42E C B2SC2878E B CSS8050SS8550DTC144ESADTA144ESAE C BMULTI-CHANNELRESISTORS : UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNL

41、ESS OTHERWISE SPECIFIED, ARE 50V, 10%.43E B C2SD600KMAIN BOARDNOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.4412345678910DIRA1A2A3A4A5A6A7A8GND20191817161514131211VCCGB1B2B3B4B5B6B7B8(1)(2)(3)(4)(5)(6)(7)(8)(9)(11)(19)

42、(18)(17)(16)(15)(14)(13)(12)OECKD01DC1END1D2D3D4D5D6D7Q0Q1Q2Q3Q4Q5Q6Q774LVQ574DSP BOARD: U1008, U1009W27C020DSP BOARD: U1007Q0Q7CEOEA0CONTROLOUTPUTBUFFERCOREARRAYDECODERPGMVCCGNDVPPA17312224IC BLOCK DIAGRAM74LVC245DSP BOARD: U1002, U1003, U101474VHC245KEYBOARD: U209NJM5532DSP BOARD: U1010U1013, U102

43、3 & U1025MULTI-CHANNEL: U6104U607PRE-OUT BOARD: U609U613AUDIO BOARD: U305ISC BOARD: U8011A- +2348765B+ -CS4228AKSDSP BOARD: U102145DATA 7:0,EMAD 7:0,GPIO 7:0CSParallel or Serial Host InterfaceCMPCLK,SCLKN2CompressedData InputInterfacePLLClock ManagerVA FramerShifterInputBufferControllerDDDCMCLKSCLKL

44、RCLKAUDATA2.0XMT958/AUDATA3CMPDAT,SDATAN2CMPREQLRCLKN2SCLKN1STCCLK2LRCLKN1SDATAN1DigitalAudioInputInterfaceFILT2 FILT1AGNDCLKINCLKSELRAM InputBufferDGND3:1 VD3:124-BitDSP ProcessingRAMProgramMemoryRAMDataMemoryROMProgramMemoryROMDataMemorySTCR/W,EMOE,GPIO11RD,DS,EMWR,GPIO10WR,SCDIO,SCDOUT,PSEL,GPIO9

45、A0,SCCLKA1,SCDINABOOT,INTREQEXTMEMGPIO8OutputFormatterRAMOutputBufferRESETCS49326DSP BOARD: U1001Clock &DataRecoveryMisc.ControlSerialAudioOutputReceiverAES3S/PDIFDecoderC & U bitDataBufferControlPort &RegistersRXN0RXP6OLRCKOSCLKSDOUTRSTEMPH UCDOUTSCL/SDA/CCLKAD1/CDINAD0/CSINTVA+AGND FILTRERRVD+DGND

46、H/SRMCKRXP5RXP4RXP3RXP2RXP1RXP07:1MUXOMCKCS8415ADSP BOARD: U1005CS4340DSP BOARD: U102246AT24C16KEYBOARD: U210SDAVSSSCLWCVCC/ E2M24Cxx12348765/ E2/ E2/ E2NC/ E1/ E1/ E1/ NCNC/ E0/ E0/ NC/ NCNC/1Kb/2Kb/4Kb/8Kb16Kb74HCU04DIGITAL BOARD: U1201 & U12021A1Y2A2Y3A3YGND12345671413121110986AVCC6Y5A5Y4A4Y74HC2

47、51DIGITAL BOARD: U1203PIN4 D0W PIN6Y PIN5PIN8 GNDPIN16 VCCPIN7 STROBES0PIN3 D1S1PIN2 D2S2PIN1 D3S3PIN15 D4S4PIN14 D5S5PIN13 D6S6PIN12 D7PIN11 APIN10 BPIN9 CS7S0S0S1S1S2S2S3S3S4S4S5S5S6S6S7S7TCM810KEYBOARD: U214VCCRESET*(RESET)GNDTCM809xENBTCM810 xENB123*3-Pin SOT-23BNOTE: *3-Pin SOT-23B is equivalen

48、t to JEDEC TO-236 * () is for TCM81047HCF4094BKEYBOARD: U204U207 & U211SERIALINCLOCKSTROBELATCH 13-STATE1OUTPUTENABLE2SERIALOUTQS10SERIALOUTQS9151D QCLCL3CLCL1CLCL2D QCLCLLATCH2TRTRLATCH3TRTR3-STATE23-STATE33D QCLCLQSTAGES3 - 722222222Q3Q2Q1VSSVDDQ7Q8Q6Q5Q4CLCLCLCLpnTLTLpnpnTLTLp npnVDDVSSPCB4445433

49、7364138RDIOBKLATBLDIORDINRDOUTLDINLDOUTDIRCLKSQ1SQ64QB1HVO1HVO23GQB23DIRECTIONCONTROLUNITSHIFTUNITLATCHUNITDIRRDIOLDIODIRCLKBQB24HVO24HVO41GQB41LATCHUNIT51738299QB42HVO42HVO64GQB64LATCHUNIT0830VDD2 02 31 50 79VSS2 05 34 47 76PT6306KEYBOARD: U20348M6759KEYBOARD: U201 & U202Data BusData BusPort 0Drive

50、rsP0.7:0Port 2DriversP2.7:0Data BusData BusProgram AddressRegisterProgram CounterBufferDPTRIncrementerPort 1DriversP1.7:0Port 3DriversP3.7:0Port LatchPort LatchPort LatchSerial PortTimerInterrupt LogicACCALU REG1ALU REG2PSWALUB RegisterStackPointerClocks andControlOSCInstructionRegisterRAM Addr.Regi