Alto_Maxidrive_3.4_Crossover_Service_Manual电路图.pdf

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1、Service Manual Version: 1.1 Model: MAXIDRIVE3.4 3-WAY STEREO DIGITAL CROSSOVER RadioFans.CN 收音机爱 好者资料库 CONTENTS 1. Specification. 2 2. Block Diagram. 1 3. Schematic Diagram.,.9 4. Printed Circuit Board. 8 5. Wiring Diagram. 1 6. Test Procedure. 0 7. Electrical Parts List 18 8. Exploded Views & Mecha

2、nical Parts List1 9. Troubleshooting. 0 10. Notes. 0 RadioFans.CN 收音机爱 好者资料库 ? ? General specifications: INPUT section Connectors 2 x COMBO Nominal input sensitivity 0dB(0.775v) Input Impedance 30KOhm Max.Input level +20dBu Input Gain 30/+6 dB step 0.5dB Digital input AES/EBU, XLR-F Digital input sa

3、mple rate32kHz/48kHz Output section Connectors 6 x XLR-M Output Impedance 600Ohm Nominal Output level 0dBu Maximum Output level +20dBu Output Gain 30/+6dB step 0.5dB DSP Section A/D converters20bit D/A converters20bit Internal dynamics40bit Sampling fequency48kHz Features Configuration2-WAY STEREO,

4、3-WAY STEREO, 2,3,4,5,6-WAY MONO Crossover Filters TypeBessel , Butter worth or Linkwitz-Riley Crossover Filters Slope6, 12, 18, 24, or 48dB per octave Delay Step 21 microseconds minimum Max Delay time2621 ms (inputs), 291 ms(output) EQ filtersUp to 40 maximum (depending on the crossover slope) EQ T

5、ypePeak, 6dB Lo-Shelf, 12dB Lo-Shelf, 6dB Hi-Shelf, 12dB Hi-Shelf, Notch +/-15dB, variable in 0.05 steps EQ Gain+/-15dB, variable in 0.5dB steps EQ Bandwidth0.05 to 3.00 octaves, variable in 0.05 steps EQ freq15.6Hz to 16kHz DynamicsDigital limiter on all the output MemoriesFACTORY PRESETS are 10+12

6、8 USER PRESETS +128 CARD PRESETs RadioFans.CN 收音机爱 好者资料库 Communications9-pin RS232, XLR-F RS485 IN, XLR-M RS485 OUT General Performance(with filters out) Frequency Response 20Hz-20KHz, 0.25dB Dynamic range 117dB 20Hz to 20KHz 120dB 20Hz to 20KHz on AES/EBU input Channel Separation 100dB 20Hz to 20KH

7、z Distortion(THD) 0.05%, 20Hz to 20KHz Input Meter-24dB, -18dB, -12dB, -6dB, CLIP relative to Clip point(+20dBu) Outpur Meter-24dB, -12dB, -6dB, LIMIT relative to limiter threshold setting, CLIP General Dimensions483 x 44 x 300mm Weight4.0kg IN AADCIN AADC R U T N I G O IN AADCIN BADC 2 . Bl o c k D

8、 i a g r a m 1234 A B C D 4321 D C B A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 CN1 CN2*4- 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 CN2 CN2*10 C14 104P +5VD R8 1K C15 220U R13 3K9 R5 5K6 R3 5K6 R1 5K6 R2 5K6 C1 103P C2 103P SW7 30P- ENCODER +5VD STR 1 D 2 CP 3 EO 15 D0 4 D1 5 D2 6 D3 7 D4 14 D5

9、13 D6 12 D7 11 QS 9 QS 10 IC3A HCF4094 STR 1 D 2 CP 3 EO 15 D0 4 D1 5 D2 6 D3 7 D4 14 D5 13 D6 12 D7 11 QS 9 QS 10 IC5A HCF4094 R14 10K +5VD C10 47P C7 47P R19 10K C16 47P +5VD C8 47P R24 10K +5VD R25 1K2 R26 1K2 R28 1K2 R27 1K2 R21 1K2 R18 1K2 R22 1K2 R20 1K2 DL48 RED DL47 RED DL46 RED DL45 RED DL4

10、3 RED DL41 RED DL44 RED DL42 RED MUTE1 MUTE2 MUTE3 MUTE4 EDIT PRESET UTILITY DELAY D1 4148 R23 100K +5VD+5VD R4 4R7 1/2W 12 IC4A 74HC04D A 11 B 12 C 13 D 14 E 3 F 4 G 5 H 6 QH 9 QH 7 SIN 10 S/L 1 CK 2 CI 15 IC6A 74HC165D 12 34 56 78 AR4 4K7*4 12 34 56 78 AR1 4K7*4 SW11 SW12 SW10 SW9 SW3 SW8 +5VD R31

11、 10K C9 47P R6 10K +5VD +5VD R7 10K 12IC1A 74HC14D MUTE3 MUTE4 MUTE1 MUTE2 ENTER ESC 89 IC1D 74HC14D 56IC1C 74HC14D 34IC1B 74HC14D 34IC4B 74HC04D 56 IC4C 74HC04D 89 IC4D 74HC04D 1011 IC4E 74HC04D 1213 IC4F 74HC04D C4 10U 1011 IC1E 74HC14D 1213 IC1F 74HC14D C17 10U 147 IC4G 74HC04D 168 IC3B HCF4094 1

12、68 IC5B HCF4094 1 2 CN4 2P2.5 C11 104P C6 104P C12 104P C13 104P C5 104P C3 104P C18 10U +5VD 168 IC6B 74HC165D 168 IC2B 74HC165D 147 IC1G 74HC14D A 11 B 12 C 13 D 14 E 3 F 4 G 5 H 6 QH 9 QH 7 SIN 10 S/L 1 CK 2 CI 15 IC2A 74HC165D 12 34 56 78 AR3 4K7*4 12 34 56 78 AR2 4K7*4 SW4 SW2 SW6 SW1 SW5 +5VD

13、MODE PAG UP GIU PAG DW SU TO DISPLAY TO CPU P80 P90 P80 P90 P80 P90 R29 1K2 R30 1K2 DL50RED DL49 RED MUTE5 MUTE6 SW13 MUTE5 SW14 MUTE6 R10 10R R11 10R R12 10R R15 10R R16 10R R17 10R MAXIFP1.Sch Titel Size File: Date: Drawn By: Sheet RevisionModel No: 27-Aug-2002 C.C.LIN MAXIDRIVE 00of Display front

14、 board VER020610 A4 CLOCK CLOCK1 STROBE LED OUT EN SD_OUT Display front board MAXIFP2.SCH 3. S c h e ma t i c D i a g r a m 1234 A B C D 4321 D C B A STR 1 D 2 CP 3 EO 15 D0 4 D1 5 D2 6 D3 7 D4 14 D5 13 D6 12 D7 11 QS 9 QS 10 IC10A HCF4094BM STR 1 D 2 CP 3 EO 15 D0 4 D1 5 D2 6 D3 7 D4 14 D5 13 D6 12

15、 D7 11 QS 9 QS 10 IC7A HCF4094BM STR 1 D 2 CP 3 EO 15 D0 4 D1 5 D2 6 D3 7 D4 14 D5 13 D6 12 D7 11 QS 9 QS 10 IC11A HCF4094BM STR 1 D 2 CP 3 EO 15 D0 4 D1 5 D2 6 D3 7 D4 14 D5 13 D6 12 D7 11 QS 9 QS 10 IC8A HCF4094BM R32 1K2 R72 0R 168 IC7B HCF4094BM 168 IC9B HCF4094BM 168 IC8B HCF4094BM 168 IC10B HC

16、F4094BM C20 104P C22 104P C21 104P C19 104P +5VD +5VD STR 1 D 2 CP 3 EO 15 D0 4 D1 5 D2 6 D3 7 D4 14 D5 13 D6 12 D7 11 QS 9 QS 10 IC9A HCF4094BM 168 IC11B HCF4094BM C23 104P +5VD MAXIFP2.Sch Titel Size File: Date: Drawn By: Sheet RevisionModel No: 27-Aug-2002 C.C.LIN MAXIDRIVE 22of Display front boa

17、rd VER020610 A4 CLOCK CLOCK1 STROBE LED SD_OUT OUT EN R33 1K2 R34 1K2 R35 1K2 R36 1K2 R37 1K2 R38 1K2 R39 1K2 R40 1K2 R41 1K2 R42 1K2 R43 1K2 R44 1K2 R45 1K2 R46 1K2 R47 1K2 R48 1K2 R49 1K2 R50 1K2 R51 1K2 R52 1K2 R53 1K2 R54 1K2 R55 1K2 R56 1K2 R57 1K2 R58 1K2 R59 1K2 R60 1K2 R61 1K2 R62 1K2 R63 1K

18、2 R64 1K2 R65 1K2 R66 1K2 R67 1K2 R68 1K2 R69 1K2 R70 1K2 R71 1K2 DL14 DL15 DL22 DL26 DL19 DL23 DL27 DL31 DL3DL5 DL8 DL12 DL11 DL7 DL4 DL16 DL18DL20 DL24 DL28 DL32 DL35 DL1DL2 DL6 DL9 DL10DL21 DL17 DL13 CLIP OUT3 CLIP OUT4 LIMIT OUT4 - 6dB OUT4 - 12dB OUT4 - 24dB OUT4 CLIP A - 6dB A CLIP OUT1 LIMIT

19、OUT1 - 12dB OUT1 - 6dB OUT1 CLIP OUT2 - 24dB OUT1 LIMIT OUT2 - 6dB OUT2 - 12dB OUT2 - 24dB OUT2 - 12dB OUT3 - 24dB OUT3 LIMIT OUT3 - 6dB OUT3 CLIP B - 6dB B - 12dB B - 18dB B - 12dB A - 24dB B - 24dB A - 18dB A DL33 DL36 DL38 DL40 DL37 DL39 - 6dB OUT5 - 12dB OUT5 - 24dB OUT5 - 24dB OUT6 - 6dB OUT6 -

20、 12dB OUT6 DL29 DL25DL30 DL34 LIMIT OUT5 CLIP OUT5 LIMIT OUT6 CLIP OUT6 1234 A B C D 4321 D C B A Title NumberRevisionSize A4 Date:20-Oct-2002Sheet of File:D:zhongPRODUCTDX26SCHPCBDX26.ddbDrawn By: DSP CPU POWER DSP-PS.SCH DIGITAL I/O BUS RXP RXN MUTE DSP CPU MAIN DSP-CPU.SCH DIGITAL I/O BUS MUTE D/

21、A CONVERTER OUTPUT DA- CONV.SCH DIGITAL I/O BUS RXN RXP A/D INTPUT AD-IN.SCH F313072.PRJ (F3130372 MAIN PROJECT) DX26 CPU & AD/DA BOARD PCB# F313072 SHUNZA 12345678 A B C D 87654321 D C B A Title NumberRevisionSize A3 Date:20-Oct-2002Sheet of File:D:zhongPRODUCTDX26SCHPCBDX26.ddbDrawn By: A_A0 182 A

22、_A1 181 A_A4 178 A_A3 179 A_A2 180 A_A5 160 A_A6 159 A_A7 158 A_A8 151 A_A9 152 A_A10 153 A_A11 154 A_A12 155 A_A13 156 A_A14 162 A_A15 163 A_A16 164 A_A17 165 A_A18 166 A_A19 167 A_A20 168 A_A21 169 A_A22 170 A_A23 171 P23/ALE 96 P00/D28 67 P01/D29 68 P02/D30 69 P03/D31 70 A_D0 105 A_D1 106 A_D2 10

23、9 A_D3 110 A_D4 111 A_D5 112 A_D6 113 A_D7 114 A_D8 115 A_D9 116 A_D10 117 A_D11 118 A_D12 121 A_D13 122 A_D14 123 A_D15 124 A_WEB 135 A_DE 136 A_LCAS_W0 139 A_UCAS_W1 140 A_CS0 125 A_CS1 132 A_CS2 133 A_CS3 134 P30/A30 103 P31/A31 104 P24/ACK 97 INT0 126 INT1 127 INT2 128 INT3 129 IC20AMMS- REDLG D

24、_D0 201 D_D1 202 D_D2 203 D_D3 204 D_D4 205 D_D5 206 D_D6 207 D_D7 1 D_D8 2 D_D9 3 D_D10 4 D_D11 5 D_D12 6 D_D13 7 D_D14 8 D_D15 11 P04/D26 71 P05/D27 72 P06/D28 73 P07/D29 74 P08/D30 75 P09/D31 80 D_A0 35 D_A1 36 D_A2 39 D_A3 40 D_A4 41 D_A5 42 D_A6 43 D_A7 44 D_A8 45 D_A9 46 D_A10 49 D_A11 50 D_A1

25、2 51 D_A13 52 D_A14 53 D_A15 54 D_A16 55 D_A17 56 D_A18 57 D_A19 58 D_CS0 30 D_CS1 31 D_CA5 32 D_OE 34 D_WR 33 IC20BMMS- REDLG P12/BIR0 83 P13/BIR1 84 P14/BIR2 85 P15/BIR3 86 P16/BIR4 87 P17/BIR5 88 P18/BIR6 89 P19/BIR7 90 P20/BIR8 91 MD0_O 64 MD0_I 59 MD1_O 65 MD1_I 60 MD2_O 66 MD2_I 61 P25/SDI 98

26、P26/SDO 99 P27/SCK 100 P21/AD0 94 P22/AD1 95 ADCIN 149 TESTE 183 REFCLK 177 REFOUT 173 RST 29 XTIN 24 XTOUT 25 CK256FS 21 DAC0 12 DAC1 13 DAC2 14 DAC3 15 DAC4 16 DAC5 17 CK64FS 20 BB_LE 22 BB_LA 176 FSYNC_O 19 FSYNC_I 18 P11/CK32 82 P10/CK32 81 ADC0 196 ADC1 197 ADC2 198 ADC3 199 M4_WS 195 M4_LA 194

27、 MOD0 186 MOD1 187 MOD2 188 MOD3 189 MOD4 190 MOD5 191 MOD6 192 MOD7 193 P28/STB0 101 P29/STB1 102 IC20CMMS- REDLG 12 34 56 78 AR22 100R*4 12 34 56 78 AR16 100R*4 12 34 56 78 AR15 4.7K*4 12 34 56 78 AR11 4.7K*4 12 34 56 78 AR2 4.7K*4 12 34 56 78 AR3 4.7K*4 12 34 56 78 AR31 4.7K*4 12 34 56 78 AR20 10

28、0R*4 12 34 56 78 AR12 100R*4 12 34 56 78 AR14 100R*4 78 12 56 34 AR8 4K7*4 12 34 56 78 AR10 4K7*4 R45 1K +5VD +5VD AA0 AA1 AA2 AA3 AA4 AA5 AA6 AA7 AA8 AA9 AA10 AA11 AA12 AA13 AA14 AA15 AA16 AA17 R40 4K7 LGND DD0 DD1 DD2 DD3 DD4 DD5 DD6 DD7 DD8 DD9 DD10 DD11 DD12 DD13 DD14 DD15 12 34 56 78 AR21 100R*

29、4 12 34 56 78 AR25 100R*4 R65 100R R68 100R DA0 DA1 DA2 DA3 DA4 DA5 DA6 DA7 DA8 DA9 DRAS DCAS DWR DOE DATA/OUT1 DATA/OUT2 DATA/OUT3 DATA/OUT4 R88 100R R87 100R 34 IC30B 74HC04D 56 IC30C 74HC04D R86 47K R85 220R XT1 24.576MHZ C164 15P C165 15P 1213 IC27F 74HC04D 89 IC27D 74HC04D 1011 IC27E 74HC04D LG

30、ND CLK 3 D 2 SD 4 CD 1 Q 5 Q 6 IC26A 74HC74D R70 100R D2 RLS4148R97 560R CLK 11 D 12 SD 10 CD 13 Q 9 Q 8 IC26B 74HC74D A0 16 A1 17 A2 18 A3 19 A4 22 A5 23 A6 24 A7 25 A8 26 NC 15 NC 12 NC 11 NC 30 WR 13 RAS 14 OCAS 28 CCAS 29 OE 27 DD0 2 DD1 3 DD2 4 DD3 5 DD4 7 DD5 8 DD6 9 DD7 10 DD8 31 DD9 32 DD10

31、33 DD11 34 DD12 36 DD13 37 DD14 38 DD15 39 IC6A AS4C256K16F0- 60JC WR RAS LCAS DE- R 12.288MHZ +5VD DX26 DSP-CPU BOARD (PCB#F313072) R73 220R MUTE AA18 1 2 3 4 5 6 7 8 9 10 CN2 CN2*5 12 IC36A 74HC14DT 34 IC36B 74HC14DT 1011 IC36E 74HC14DT 89 IC36D 74HC14DT 1213 IC36F 74HC14DT 56 IC36C 74HC14DT C184

32、104P C181 104P R107 33K R106 33K R105 10K 256K*16 DYNAMIC RAM R98 10K NC 1 VCC 2 GND 3 NC 4 NC 5 NC 6 RST 7 NC 8 IC35 MAX709 +5VD DD26 DD27 DD28 DD29 DD30 DD31 DD0 DD1 DD2 DD3 DD4 DD5 DD6 DD7 DD8 DD9 DD10 DD11 DD12 DD13 DD14 DD15 DD26 DD27 DD28 DD29 DD30 DD31 12 34 56 78 AR29 4.7K*4 +5VD 12 34 56 78

33、 AR18 4.7K*4 12 34 56 78 AR17 4.7K*4 DD16 DD17 DD18 DD19 DD20 DD21 DD22 DD23 DD24 DD25 DD16 DD17 DD18 DD19 DD20 DD21 DD22 DD23 DD24 DD25 12 AR28A 4.7K*4 34AR28B 4.7K*4 56 AR28C 4.7K*4 78 AR28D 4.7K*4 +5VD Q0 2 D0 3 D1 4 Q1 5 Q2 6 D2 7 D3 8 Q3 9 Q4 12 D4 13 D5 14 Q5 15 Q6 16 D6 17 D7 18 Q7 19 OE 1 CP

34、 11 IC33A 74HC374DW Q0 2 D0 3 D1 4 Q1 5 Q2 6 D2 7 D3 8 Q3 9 Q4 12 D4 13 D5 14 Q5 15 Q6 16 D6 17 D7 18 Q7 19 OE 1 CP 11 IC34A 74HC374DW AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 AD8 AD9 AD10 AD11 AD12 AD13 12 34 56 78 AR35 100R*4 12 34 56 78 AR33 100R*4 LGND LGND DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 12 34 56 78 AR3

35、6 4.7K*4 12 34 56 78 AR34 4.7K*4 +5VD R96 4K7 R95100RDE D/I DCS1 DCS2 DRST12 34 56 78 AR37 4.7K*4 12 34 56 78 AR7 100R*4 12 34 56 78 AR9 100R*4 12 34 56 78 AR13 100R*4 AA19 AA20 AA21 AA22 AA23 12 34 56 78 AR30 4K7*4 R77 4K7 LGND R72 100R R41 1K R44 4K7 AA9 AA10 AA11 AA12 AA13 AA14 AA15 AA16 AA18 AA1

36、7 AA19 AA20 AA21 AA22 AA23 R47 4K7 12 34 56 78 AR6 4K7*4 12 J1A IDC4 34 J1B IDC4 +5VD 12 34 56 78 AR26 4.7K*4 12 34 56 78 AR27 4.7K*4 12 34 56 78 AR24 4.7K*4 AD0AD0 AD1AD1 AD2AD2 AD3AD3 AD4AD4 AD5AD5 AD6AD6 AD7AD7 AD8AD8 AD9AD9 AD10AD10 AD11AD11 AD12AD12 AD13AD13 AD14AD14 AD15AD15 WR OE W0 W1 C182 1

37、U C183 LGND LGND C150 220P LGND LGND LGNDLGND LGND LGNDLGND 12 34 56 78 AR32 100R*4 R74 220R R75 220R C84 220P R43 100R LGND SD_IN SD_OUT SD_CLK INT_0 INT_1 REFCLK PWM DIS RSRX RSTX MD0_O MD0_I MD2_O INT_3 12 34 56 78 AR19 100R*4 DATA/OUT5 DATA/OUT6 LRCK BB_LE R69 100R BCLK R92 220R R91 220R STBSWT

38、STBLED 12 34 56 78 AR4 100R*4 DIGIT IN LRCK L/R LGND 12 34 56 78 AR5 100R*4 LGND D0_L/R D1_L/R D2_L/R D3_L/R 56 AR39C 100R*4 34 AR39B 100R*4 BIR5 BIR6 SYSCLK INT_0 INT_1 ERROR INT_3 12 34 56 78 AR23 33R*4 R76 10K 12 AR39A 100R*4 78 AR39D 100R*4 BIR0 BIR1 P23 P00 P01 A_CS0 P30/A30 A_CS3 CPU ADDR BUS

39、CPU DATA BUS +5VD LGND BIR5 BIR6 BIR0 BIR1 1 2 3 4 5 6 CN7 CN2*3 12 34 56 78 910 1112 1314 1516 1718 1920 CN9 CN2*10 AA1 AA2 AA3 AA4 AA5 AA6 AA7 AA8 AA9 UCAS AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 A9 28 NC 11 NC 12 NC 15 WR 13 RAS 14 OCAS 30 CCAS 31 OE 29 DD0 2 DD1 3 D

40、D2 4 DD3 5 DD4 7 DD5 8 DD6 9 DD7 10 A0 17 A1 18 A2 19 A3 20 A4 23 A5 24 A6 25 A7 26 A8 27 DD8 33 DD9 34 DD10 35 DD11 36 DD12 38 DD13 39 DD14 40 DD15 41 NC 32 NC 16 IC14GM71C18163CJ- 6 DB0 DB1DB2 DB3DB4 DB5DB6 DB7DE DRST DIAL1DIAL0 DCS2 PRG STBLED SD_CLK SD_IN SD_OUT PWM DIS STBSWT DA0DD0 DD1 DD2 DD3

41、 DD4 DD5 DD6 DD7 DD8 DD9 DD10 DD11 DD12 DD13 DD14 DD15 DA1 DA2 DA3 DA4 DA5 DA6 DA7 DA8 DA9 DSP DATA BUS DSP ADDR BUS DWR DRAS DCAS DOE A0 25 A1 24 A2 23 A7 18 A6 19 A5 20 A4 21 A3 22 A15 1 A14 2 A13 3 A12 4 A11 5 A10 6 A9 7 A8 8 A16 48 A17 17 A18 16 CS 26 WE 11 OE 28 RST 12 D0 29 D1 31 D2 33 D3 35 D

42、4 38 D5 40 D6 42 D7 44 D8 30 D9 32 D10 34 D11 36 D12 39 D13 41 D14 43 D15 45 RY/BY 15 NC 9 NC 10 NC 13 NC 14 BYTE 47 IC10A EN29F800B- 70T AA2 AA3 AA4 AA5 AA6 AA7 AA8 AA9 AA10 AA11 AA12 AA13 AA14 AA15 AA16 AA17 AA18 AA19 AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 WO OE +5VD

43、+5VD A_CS3 6 74 3 1 2Re Ro De Di TRANSCEIVER IC32AMAX485E MD0_O MD0_I RSRX RSTX RXP RXN DIAL1 DIAL0 LGND INT_0 INT_1 8 9 10 IC5C 74HC08D 1 2 3IC5A 74HC08D 4 5 6IC5B 74HC08D 4 5 6IC28B 74HC32D 56 IC27C 74HC04D P01 W0 W1 OE A_CS0 P00 C149 220P R39 4K7 R38 4K7 R29 4K7 RAS LCAS UCAS OE- R LGNDLGND LGND

44、LGND 12 IC30A 74HC04D 89 IC30D 74HC04D 1011 IC30E 74HC04D 1213 IC30F 74HC04D 8 9 10 IC28C 74HC32D 11 12 13 IC28D 74HC32D 11 12 13 IC5D 74HC08D SHUNZA 1 2 3 IC28A 74HC32D AA1 P23 DE D/I DCS1 DCS2 DRST DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 DRAM 1M*16 LGND R71 4K7 +5VD MD2_O D1 RLS4148 PRG DIGITAL I/O BUS (3

45、.072MHZ) (48KHZ) +5VD P30/A30 DSP- CPU.SCH (F3130372 DSP MAIN) DX26 CPU & AD/DA BOARD PCB# F313072 RXRST ( AM29F800BB- 90EC ) ( Fast page mode DRAM ) 1234 A B C D 4321 D C B A Title NumberRevisionSize A4 Date:20-Oct-2002Sheet of File:D:zhongPRODUCTDX26SCHPCBDX26.ddbDrawn By: CA 21 CB 20 CE 17 CD 18

46、CC 19 CON/PRO 15 CSCLK 16 SYNC 23 MUTE 27 PD/RST 1 RXP 13 RXN 14 MCLK 28 CS 3 CCLK 2 SDI 4 SDO 5 QDFS 6 NDSIG 12 ERROR 11 INT 10 U/CBIT 9 SFCLK 8 BCLK 26 SDATA 24 LRCLK 25 IC31AAD1892JR 227 IC31B AD1892 Out-2R 1 In-2R 2 Out-1R 3 In-1R 4 Out-2L 14 In-2L 13 Out-1L 12 In-1L 11 D0 23 D1 24 D2 25 D3 26 2

47、56F 19 STB 18 LRCK 17 BpOOCR 27 BpOOCL 16 NC 15 NC 28 NC 10 IC8APCM1760U 85 67 9 IC8B PCM1760U 22 20 21 IC8C PCM1760U 12 43 TF2 LT- 0806M R89 110R 1% RXP RXN R94 4K7 R93 100R R90 100R C167 103P LGND C171 104P LGND LGND +5VD REFCLK DIGIT IN ERROR LRCK R31 1K2 R30 1K2 R22 560R C51 1N8 C50 1N8 C49 2N2

48、C48 2N2 R20 470R R21 2K2 C38 1N8 C39 1N8 R17 1K2 R11 560R C45 2N2 C40 2N2 R18 470R R12 2K2 R19 47K R13 47K AGND AGND AGND AGND 12 34 56 78 AR1 100R*4 D0_L/R D1_L/R D2_L/R D3_L/R SYSCLK LRCK L/R R42 100R C74 10U C77 10U AGNDAGND R16 1K2 R/IN L/IN DIGITAL I/O BUS 1 2 3 4 CN3 CN2*2 AGND AD- IN.SCH (F31

49、30372 A/D INPUT) C56 10U C76 1U C75 1U C55 10U C47 1U C46 1U C176 104P +5VD LGNDAGND - 5VA DX26 CPU & AD/DA BOARD PCB# F313072 SHUNZA DUAL 20BIT MODULATOR C175 103P +5VA RXRST 1234 A B C D 4321 D C B A Title NumberRevisionSize A4 Date:20-Oct-2002Sheet of File:D:zhongPRODUCTDX26SCHPCBDX26.ddbDrawn By: 147148 IC20D MMS- REDLG 910 2326 3738 4748 6263 7879 9293 107108 119120 137138 157161 172174 200208 184185 130131 7677 2728 175 IC20E MMS- REDLG 146150 144 143