Denon-AVR785-avr-sm维修电路原理图.pdf

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1、SERVICE MANUALMODELAVR-1905/785AV SURROUND RECEIVERAVC-1590AV SURROUND AMPLIFIERFor U.S.A., Canada, Europe,U.K., Asia, China, Taiwan R.O.C.,Korea & Japan modelTOKYO ,JAPANX0214 V.01 DE/CDM 0407Some illustrations using in this service manual areslightly different from the actual set.Please use this s

2、ervice manual with referring to theoperating instructions without fail.For purposes of improvement, specifications anddesign are subject to change without notice.本文中使用、説明都合上現物多少異場合。修理際、必取扱説明書参照上、作業行。前、必読。本機、火災、感電、対安全性確保、配慮、法的電気用品安全法、所定許可得製造。従際、安全性維持、記載注意事項必守。本機仕様性能改良、予告変更。補修用性能部品保有期間、製造打切後8年。注意Ver.

3、1RadioFans.CN 收音机爱 好者资料库2AVR-1905/785 AVC-1590SAFETY PRECAUTIONSThe following check should be performed for the continued protection of the customer and service technician.LEAKAGE CURRENT CHECKBefore returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a l

4、ine to chassisresistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of thepower cord is less than 460 kohms, the unit is defective.(1)(2)500V1M(1)(2)RadioFans.CN 收音机爱 好者资料库3AVR-1905/785 AVC-1590DIMENSION4AVR-1905/785 AVC-1590CAUTION IN SERVI

5、CINGInitializing AV SURROUND RECEIVERAV SURROUND RECEIVER initialization should be performed when the com, peripheral parts of com, and Digital P.W.B. are replaced.1. Switch off the unit.2. Hold the following SPEAKERS-A button and SPEAKERS-B button, and switch on the unit.3. Check that the entire di

6、splay is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.Note:If step 3 does not work, start over from step 1. All user settings will be lost and this factory setting will be recovered when this initialization mode.S

7、o make sure to memorize your setting for restoring after the initialization.時注意事項AV 初期化周辺部品、Digital 基板等交換場合、AV 初期化行下。1. OFF 。2.SPEAKERS-A SPEAKERS-B 同時押、押 ON 。3.表示約 1 秒間隔点滅確認後、2 指離。初期化。注意 :上記 3 状態場合、一度操作 1 直。初期化行客様設定内容工場出荷状態戻、設定内容控初期化後再設定。5AVR-1905/785 AVC-1590ADJUSTMENTAudio SectionIdling CurrentRe

8、quired measurement equipment: DC Voltmeter1. Preparation(1) Avoid direct blow from an air conditioner or an electric fan, and adjust the unit at normal room temperature 15 C 30 C (59 F 86 F).(2) Presetting POWER (Power source switch)OFF SPEAKER (Speaker terminal)No load(Do not connect speaker, dummy

9、 resistor, etc.)2. Adjustment(1) Remove top cover and set VR101, VR102, VR103, VR104, VR105, on Amp. Unit, VR106 on SURR.-BACK ch Amp. Unit at fully counterclockwise ( ) position.(2) Connect DC Voltmeter to test points (FRONT-Lch: TP104, FRONT-Rch: TP105, CENTER ch: TP103, SUR-ROUND-Lch: TP101, SURR

10、OUND-Rch: TP102, SUR-ROUND-BACK Lch: TP106,SURROUND-BACK Rch: TP107).(3) Connect power cord to AC Line, and turn power switch ON.(4) Presetting.MASTER VOLUME: - counterclockwise ( min.)MODE: 6CH STEREOFUNCTION: CD(5) Within 2 minutes after the power on, turn VR101 clock-wise ( ) to adjust the TEST P

11、OINT voltage to 1.5 mV 0.5 mV DC.(6) After 10 minutes from the preset above, turn VR101 to set the voltage to 2.5 mV 0.5 mV DC.(7) Adjust the Variable Resistors of other channels in the same way.VR104TP104VR101,TP101TP106VR107SBLTP107VR107SBRVR103,TP103VR102TP102VR105TP105F LchS LchS Back LchS Back

12、RchC chS RchF RchDC Voltmeter調整電流調整調整必要測定器 :DC Voltmeter1. 準備(1) 、扇風機風通良場所避、通常使用状態置。周囲温度 15 30 、湿度常湿。(2) 電源OFF端子無負荷( 抵抗器接続。)2. 調整(1) 上、基板 VR101, VR102, VR103, VR104, VR105 及 SURR.-BACK 基板VR106 反時計方向 ( ) 回切状態。(2) (FRONT-Lch: TP104, FRONT- Rch: TP105, CENTER ch: TP103, SURROUND-Lch: TP101, SURROUND-Rc

13、h: TP102, SURROUND-BACK Lch: TP106,SURROUND-BACK Rch: TP107) DC Voltmeter 接続。(3) 電源 AC100V（95 105V 範囲可）接続、電源 ON 。(4) ON 後、次。MASTER VOLUME（音量調節）反時計方向( ) 回、最小状態。SPEAKER（端子）無負荷（、抵抗器接続。 ）MODE : 6CH STEREOFUNCTION : CD(5) 2 分以内 VR101 時計方向 ( ) 回電圧次調整。1.5mV 0.5mV DC(6) 予備調整 10 分後 VR101 回、次電圧設定。2.5mV 0.5mV

14、DC(7) 同方法各可変抵抗調整。6AVR-1905/785 AVC-1590Video SectionComponent Video Level AdjustmentRequired measurement equipment etc.: Oscilloscope, DVDVIDEO PLAYER (ex: DVD-1500)Test disc: DVD T-S011. Preparation(1) Avoid direct blow from an air conditioner or an electric fan, and adjust the unit at normal room

15、temperature 15 C 30 C (59 F 86 F).(2) Playback the color-bar 75% of the Test Disc (Title 12) us-ing the DVD Video Player, and check that Y and C levels of the S terminal output are within the specified output levels.If they are out of the specified levels, adjust with the vari-able resister inside o

16、f the unit.(3) Presetting POWER (Power source switch)OFF SPEAKER (Speaker terminal)No load(Do not connect speaker, dummy resistor, etc.) DVD (Video terminal)No input2. Adjustment(1) Remove top cover and set VR601, VR602, VR603, on C-S VIDEO2 Unit at fully counterclockwise ().(2) Connect a pin-plug t

17、erminated with 75-ohms to Y (Cb, Cr) of the Component Video Monitor Output, and hook up the Oscilloscopes probe to both ends of the pin-plug.(3) Connect S terminal output of the DVD Player with the DVD input terminal of the Receiver.(4) Connect power cord to AC Line, and turn power switch ON.(5) Pre

18、setting. FUNCTION:DVD Playback the color-bar 75% of the Test Disc (Title 12)(6) Turn VR601 clockwise ( ) to adjust the COMPONENT Video Y voltage (except H. Sync) to 714 50 mVp-p. (Re-fer to Fig. 1)(7) Adjust the Variable Resistors of Cr: VR602 and Cb: VR603 in the same way. (Refer to Fig. 2, 3)Cb,Cr

19、: 486 50 mVp-p. (U.S.A. & Canada model)525 50 mVp-p. (Others)調整調整必要測定器 : Oscilloscope, DVD VIDEO PLAYER( 例 : DVD-1500) :DVD T-S011. 準備(1) 、扇風機風通良場所避、通常使用状態置。周囲温度 15 30 、湿度常湿。(2) DVD VIDEO PLAYER 75% (Title 12) 再生、S 端子出力 Y、C 正規出力確認。正規出力場合、内部可変抵抗器調整。(3) 電源OFF端子無負荷( 抵抗器接続。)DVD 入力端子無入力2. 調整(1) 上、C-S VID

20、EO2 VR601, VR602, VR603 反時計方向 ( ) 回切状態。(2) Y (Cb, Cr) 75 終端接続、両端Oscilloscope 。(3) DVD VIDEO PLAYER S 端子出力本機 DVD 入力端子接続。(4) 電源電源接続、電源 ON 。(5) ON 後、次。本機 FUNCTION DVD 。 75% (Title 12) 再生。(6) VR601 時計方向 ( ) 回Y (H. Sync 除 ) 電圧調整。(Fig. 1 参照 )714mV 50mVp-p(7) 同方法 Cr: VR602、 Cb: VR603 可変抵抗器調整。(fig. 2、3 参照 )

21、Cb, Cr: 525 50mVp-p7AVR-1905/785 AVC-1590OscilloscopeMONITOR OUT(Y,Cb,Cr)Video SectionVR902VR901VR903CbCrY8AVR-1905/785 AVC-159071450mVp-pVoltsIRE:FLTY-Signal-20.0-10.00.010.020.030.00.50.0100.00.540.050.060.048650mV (U.S.A. & Canada model) p-pVoltsIRE:FLT0.020.040.0-0.5-50.050.00.00.50.060.080.0486

22、50mV (U.S.A. & Canada model) p-pVoltsIRE:FLT0.020.040.0-0.5-50.050.00.00.50.060.080.0Fig.1 Component Video Y signalFig.2 Cb signalFig.3 Cr signal9AVR-1905/785 AVC-1590BLOCK DIAGRAMSWFLLR+-Y-+-+-+-+-+RSRCSLFRCDFMMCLKDSDATA1DSDATA3DACFRSRDATA-Cr-+-+-+-+-+SLSRCSWFLFRLDAI_P10(77)DAI_P13(80)DAI_P16(82)Cb

23、-+-FROMLock Detect&IF AMPBSEAUDIOADINSLRCK(23)RDATA(21)ADCfs64fs256fsMUTINGVOLUMEVOLUMEVOLUMECONTROL PORTCLKINVCRDACDACDACCLOCKCXA1511M+Y/CY/Cb/CrMICOMY+6VDATASBLSREX_SRDSP_FREX_FLRESONATOROP AMPTUNEROP AMP+5VDSPVIDEO7805+3.3V7805LC75721NE+SBRSURR LE3 ONLYFRONT INDIGITAL INDIGITAL OUT+RLX-TALSelecto

24、rINPUTIF FILTERMICOMDIRHPFCOUTCCLK(24)SelectorDATAIF FILTERABCLKALRCKDBCLKRAM128k X 8ROM128k X 8L.P.FMPX ICIF ICDIGITALFILTERDSDATA2DSDATA4VOLUMEVOLUMEVOLUMEVOLUMEVOLUMEDAI_P12(79)DAI_P11(78)TV/DBSDVD/VDPRMC OUTRMC INDVD/VDPVCR OUTVCRTV/DBSDVD/VDPDIGITALFILTERDACDIGITALFILTERDACDIGITALFILTERDACDIGIT

25、ALFILTERDACDIGITALFILTERDACDIGITALFILTERDSPBA7626VIDEO INPUT+DACSBLCDATADACSWSBDATADACFLSLDATACLKIN(142)MUTEOSDSEPARATEFROMCrTUNER PLLMUTESBREX_CSWSLEX_SLEX_FRCENTERANA_INDSP_FLANA_IN12MHzMAIN -BMAIN +BRELAYCODECDIRVIDEOMICOM781279157815780979067806FL DRIVER+MUTESBLSBRSBLCENTERFLFLFRGNDANALOG INANAL

26、OG IN-XMCKDeModulateCINADCFM & AMDIGITALFILTERDAI_P20(94)VCR OUTVCRTV/DBSDIGITALFILTERDIGITALFILTERDAI_P9(71)DAI_P15(81)DAI_P14(81)TA1270CbEX_SWVIDEO+1.2V7805-VKKSURR RFRTUNERFROM u-COMFRONTENDREC_SWITCHIG12.288MHZLC89057W-VF4SDOUTDACRSTI/O PORTCLATCHSBCK(22)( Y, B-Y, R-Y )COMPONENT,D-VIDEO VIDEO IN

27、PUTTC90A69FNJM2274S-VIDEO INPUTMIXING25MHZFLAG2(97)MISO(126)RESET(121)INPUT/VOLINPUT/VOLMULTI_RCXP740096KEY_MATRIXFILAMENT ACDATA16-ST-66GNKAM ANTFM ANTTUNER PART6CH_INPUTV.AUX L/RV.AUX VIDEOCDR/TAPEVCRANALOG OUTCDR/TAPEVCRTV/DBSDVD/VDPOPTICAL 2OPTICAL 1COAXIALOPTICALPLL CIRCUITLOOP FILTERAM TUNINGB

28、D3811K1TC9273-004AD1837AUDIO CODECSELCLKERRMUTESERIAL DATADLRCLKDIRERRASDATAVIDEO SWITCHBA7625*1,BA7626*2+5.6V(CPU)Q0,Q1DATA IN (REMOCON)VIDEO SWITCH( C, Y )BA7626*2SEPARATEY/C MIXVIDEO SWITCH74HC4053SW F74LVX157MCTSELECTORX-TALFLAG1(16)FLAG0(15)SPICS(122)SPICLK(125)A/D POWERENCODERRMC_IN/OUTMICOM,

29、FLT DRVMULTI_LBD3811K1PART DATADTS-ES/DD-EX/PL IIXFLT DRIVERFL DISPLAYAC CORDPRE OUTSPK BSPK AH/P OUTMULTI OUTOPTICAL 3AUXMOSI(127)FLAG3(98)74HC4053MONITOR OUTMONITOR OUTMONITOR OUT74HC4053INPUT SELECTOR & VOLUMEADSP-21266DIGITAL AUDIO DECODERBD3812FSPEAKER OUTAC OUTLET2CH-VOLUME ICAVC1590 / AVR1905

30、 BLOCK DIAGRAM10AVR-1905/785 AVC-1590LEVEL DIAGRAMS (1/2)+DIRDSPD/AD/AD/A6dBMUTE- -+D/AHPFD/AMUTEMUTE+0dB6CH IN10dB20dB30dB40dB6CH IN0dB10dB20dB30dB40dB6CH INCD IN-12dB- -30dBFS-10dBFS0dBFSA/DA/D-30dBFS-20dBFS-10dBFS0dBFS-30dBFS-20dBFS-10dBFS0dBFS6dB+- -BD3811K1MUTE25.5dB25.5dB-35.5dBATT6CH INDIGITA

31、L6CH INCD INA/D INREV AMPA/D INREV AMP-20dBFS-23dBFS+D/A OUT LPFREV AMPCENTERSUM S/WSW SUMREV AMP-18dBBD3812FELECTRIC VOLUMEVOL 00VOL 00TONEMUTEMUTEPRE AMPPOWER AMP-20dB-10dB-20dB-10dBD/A OUT100mV REFDSP OUTSL/SR/SBL/SBR-18dBBD3811K116dB16dBH/P OUT(200mV)(200mV)FRONT INPUTBUFFER AMPA/D INREV AMPDSP

32、OUTD/A OUT100mV REF-15dBSPK OUTSURROUNDBACKSPK OUTCENTERSURROUNDSPK OUTFRONT2.83V(1W/8ohm)CENTERSURROUNDSURROUND-BACKSPK OUT2.83V(1W/8ohm)H/P OUT47mV(0.27mW)SPK OUTFRONT11AVR-1905/785 AVC-1590LEVEL DIAGRAMS (2/2)OdBLFELFED/AD/AMUTE- -+MUTE-30dB-20dB-8dB30dB-20dBFS-10dBFS6dB10.5dB28dB6CH IN-10dB10dB2

33、0dBDSP OUT-30dBFS0dBFS6dBFront D/A Out100mV ref+D/A OUT LPF- -REV AMPSW SUMREV AMPVOL 00SUB WOOFERPRE OUT500mVSUB WOOFERPRE OUT(200mV)Config2 -28dBFSBD3811K1(112mV)6CH INPUTSUB_WOOFERConfig1 -38dBFS-18dB10dBTO FRONT CHELECTRIC VOLUMEPRE AMP12AVR-1905/785 AVC-1590SEMICONDUCTORSOnly major semiconducto

34、rs are shown, general semiconductors etc. are omitted to list.主半導体記載。汎用半導体記載省略。 1. ICsCXP740010-192Q (IC201)CXP740010-192Q Terminal FunctionPin No.Pin NameI/OFunction1BD3811K1/3812F_MUTEOBD3811K/BD3812F MUTE CONTROL2BD3811K1/3812F_CLKOBD3811K/BD3812F CLOCK3BD3811K1/3812F_DATAOBD3811K/BD3812F DATA4MU

35、LTI MUTEOMULTI MUTE5VCROVCR MUTE6ERR_MUTEOERR MUTE7SEL_CLKOSEL_CLK8BSEOAC3MUTE MUTE for BITSTREAM 989057_EMPHAILC89057 CONTROL10SW_SUMOSW SUMMING CONTROL11SHARC_SDINISHARC EX(DSP) DATA INPUT1289057_SDINILC89057 CONTROL13EPROM_RESETOEPROM RESET1489057_RESETOLC89057 RESET15SHARC_CSOSHARC EX(DSP) CS16S

36、HARC_SDOUTOSHARC EX(DSP) DATA OUTPUT1789057_CEOLC89057 CONTROL1889057/1837_SDOUTOCONTROL DATA1989057/1837_SCLKOCONTROL CLOCK201837_RESETOCODEC RESET21REELAY_SURR_BOSURROUND BACK RELAY22SW_MUTEOSW MUTEPH7PH6PH5PH4PH3PH2PH1PH0PK7/TO1RSTVSSXTALEXTALPK6/CS0PK5/SI0PK4/SO0PK3/SCK0PF7/AN11PF6/AN10PF5/AN9PC

37、6PC7PA0PA1PA2PA3PA4PA5PA6PA7NCVDDVSSPK1/TXPK2/TEXPI1/RMCPI2/NMIPI3/TO0/ADJPI4/INT1/CS1PI5/SCK1PC5PC4PC3PC2PC1PC0PB7/SI2PB6/SO2PB5/SCK2PB4/TO2PB3PB2PB1PB0PJ7PJ6PJ5PJ4PJ3PJ2PJ1PJ0PD7PD6PD5PD4PD3PD2PD1PD0PI6/SO1PI7/SI1PE0/INT0PE1/INT2PE2/PWM0PE3/PWM1PE4PE5PE6PE7PG0/TxDPG1/RxDPG2/EC0PG3/EC1PG4/EC2PG5/IN

38、T3PG6/INT4PG7/CINTAN0AN1AN2AN3PF0/AN4PF1/AN5PF2/AN6PF3/AN7AVDDAVREFAVSSPF4/AN8123456789101112131415161718192031323334353637383940414243444546474849501009998979695949392919089888786858483828121222324252627282930807978777675747372717069686766656463626160595857565554535251TOP VIEW13AVR-1905/785 AVC-159

39、023RELAY_FRONT_BOFRONT B RELAY24RELAY_FRONT_AOFRONT A RELAY25RELAY_SURROSURROUND RELAY26RELAY_CNTOCENTER RELAY27RELAY_H/PORELAY H/P28FUNC_UPOENCODER INPUT (FUNCTION)29H/P_DETECTIDETECT H/P30FUNC_DOWNOENCODER INPUT (FUNCTION)31SURR_SB_MUTEOSURROUND BACK MUTE32CNT_MUTEOCENTER MUTE33RLY MULTIO-34SURR_M

40、UTEOSURROUND MUTE35TC9273 STBOTC9273 STB36TC9273 CLKOTC9273 CLK37TC9273 DATAOTC9273 DATA38FL_DRV_RSTOLC75721 RESET39RELAY_POWEROPOWER RELAY40RESETIRESET41GNDGND42XTALCRISTAL OSIRATER CONNECTION43EXTALCRISTAL OSIRATER CONNECTION44FL_DRV_CEOLC75721 CE45FL_DRV_DATAOLC75721 DATA46FL_DRV/2090_CLKOLC75721

41、/BU2090 CLOCK472090_DATAOBU2090 DATA48VOL_DOWNIENCODER INPUT (VOLUME)49VOL_UPIENCODER INPUT (VOLUME)50SEL_DOWNIENCODER INPUT (SELECTOR)51SEL_UPIENCODER INPUT (SELECTOR)52AVSSAVSS53VREFVREF54AVDDAVDD55S-VIDEO_DETIS Signal Detect input56COPM_DETICompornent Signal input57STEP_OPTIAREA SELECT58SET_OPTIM

42、ODEL SELECT59GNDGND60KEY_IN3IKEY INPUT61KEY_IN2IKEY INPUT62KEY_IN1IKEY INPUT63C-VIDEO_DETIComposit Signal Detect input64PROTECTIPROTECTION6589057_INTLC89057 INT66SHARC_SCLKOSHARC EX(DSP) SCLK671837_CEOCODEC CE68SHARC_RESETOSHARC EX(DSP) RESET69FRONT_MUTEOFRONT MUTE70PWR_DOWNIPOWER DOWN DETECT71NC-72

43、NC-73LC74781 SOUTOLC74781 SOUT74NC-75TA1270_TC90A69 DATAOTA1270/TC90A69 DATA76TA1270_TC90A69 CLKOTA1270/TC90A69 SCLK77RDS_DATAIRDS(TDA7330) DATAPin No.Pin NameI/OFunction14AVR-1905/785 AVC-159078RDS_CLKIRDS(TDA7330) CLOCK79FLAG3ISpecial flag for ROM update80FLAG2IDSP operation check flag81FLAG1INON

44、USE82FLAG0IEPROM chip select control for DSP83LC74781 SCLKOLC74781 SCLK84LC74781 CSOLC74781 CS85REMOCONREMOTE CONTROL SIGNAL INPUT86S-MONI DETIVIDEO S-SIGNAL MONITOR DETECT87GNDGND88VSSVSS89VDD(BACK UP)VDD FOR BACK UP90NC-912090 DATA2OBU2090 DATA2(VIDEO)92PLL_DATAOPLL CONTROL (LC72131)93PLL_CLKOPLL

45、CONTROL (LC72131)94PLL_DT_INIPLL CONTROL (LC72131)95TU_MUTEOTUNER MUTE96STISTEREO DETECT97TUNEDITUNE DETECT98PLL_CEOPLL CONTROL (LC72131)992090_CLK(VIDEO)OBU2090 CLK (VIDEO)1002090_DATA(VIDEO)OBU2090 DATA (VIDEO)Pin No.Pin NameI/OFunction15AVR-1905/785 AVC-1590ADSP-21266SKSTZ-1B (IC804)ADSP-21266SKS

46、TZ-1B Terminal Function13 6377372108144109TOP VIEWPIN 1 INDICATORPin NameLQFP Pin #Pin NameLQFP Pin #Pin NameLQFP Pin #Pin NameLQFP Pin #VDDINT1VDDINT37VDDEXT73GND109CLKCFG02GND38GND74VDDINT110CLKCFG13RD39VDDINT75GND111BOOTCFG04ALE40GND76 VDDINT112BOOTCFG15AD1541DAI_P10 (SD2B)77GND113GND6AD1442DAI_P

47、11 (SD3A)78VDDINT114VDDEXT7AD1343DAI_P12 (SD3B)79GND115GND8GND44 DAI_P13 (SCLK23)80VDDEXT116VDDINT9VDDEXT45DAI_P14 (SFS23)81GND117GND10AD1246DAI_P15 (SD4A)82VDDINT118VDDINT11VDDINT47VDDINT83GND119GND12GND48GND84VDDINT120VDDINT13AD1149GND85RESET121GND14AD1050DAI_P16 (SD4B)86SPIDS122FLAG015AD951DAI_P1

48、7 (SD5A)87GND123FLAG116AD852DAI_P18 (SD5B)88VDDINT124AD717DAI_P1 (SD0A)53DAI_P19 (SCLK45)89SPICLK125GND18 VDDINT54VDDINT90MISO126VDDINT19GND55 GND91MOSI127GND20DAI_P2 (SD0B)56GND92GND128 VDDEXT21DAI_P3 (SCLK0)57VDDEXT93VDDINT129GND22GND58DAI_P20 (SFS45)94VDDEXT130VDDINT23VDDEXT59GND95AVDD131AD624VDD

49、INT60VDDINT96AVSS132AD525GND61FLAG297GND133AD426DAI_P4 (SFS0)62FLAG398CLKOUT134VDDINT27DAI_P5 (SD1A)63VDDINT99EMU135GND28DAI_P6 (SD1B)64GND100TDO136AD329DAI_P7 (SCLK1)65VDDINT101TDI137AD230VDDINT66GND102TRST138VDDEXT31GND67VDDINT103TCK139GND32VDDINT68GND104TMS140AD133GND69 VDDINT105GND141AD034DAI_P8

50、 (SFS1)70GND106 CLKIN142WR35DAI_P9 (SD2A)71VDDINT107XTAL143VDDINT36VDDINT72VDDINT108VDDEXT14416AVR-1905/785 AVC-1590LC89057W (IC807)LC89057W Terminal FunctionFunctionPinNo.Pin Name1RXOUTOInput bi-phase select data output terminal2RX0ITTL compatible digital data input terminal3RX1ICoaxial compatible