MSI MS-95A3 Schematic 001

8

7

6

5

4

3

2

1

95A3 100

CD/FDD Board 2004/04/01

Connect to 9592

D D

C C

1 2

ICH_PDD7 ICH_PDD6

3 4

ICH_PDD5 ICH_PDD4

5 6

ICH_PDD3 ICH_PDD2

7 8

ICH_PDD1 ICH_PDD0

9 10

GND ICH_PDIOW_#

11 12

ICH_PDIOR_# ICH_PDDREQ

13 14

IDE_RSTDRV_# ICH_PDDACK_#

15 16

ICH_IRQ_#14 ICH_PDIORDY

17 18

ICH_PDA1 ICH_PDA0

19 20

ICH_PDCS_#1 IDE_LED_#1

21 22

GND FD_DS_#0

23 24

FD_MTR_#0 FD_INDX_#

25 26

FD_DENSITY0 FD_RDATA_#

27 28

GND NC

29 30

VCC VCC

31 32

VCC VCC

33 34

VCC VCC

35 36

NC NC

37 38

NC NC

39 40

NC NC

41 42

ICH_PDD8 ICH_PDD9

43 44

ICH_PDD10 ICH_PDD11

45 46

ICH_PDD12 ICH_PDD13

47 48

ICH_PDD14 ICH_PDD15

49 50

IDE_PRI_CBLSNS ICH_PDA2

51 52

ICH_PDCS_#3 GND

53 54

GND GND

55 56

GND GND

57 58

GND GND

59

FD_HDSEL_#

61 62

FD_DIR_# FD_STEP_#

63 64

FD_WDATA_# FD_WGATE_#

65 66

FD_TRACK_#0 FD_WP_C_#

67 68

GND NC

69 70

VCC VCC

71 72

VCC VCC

73 74

VCC VCC

75 76

NC NC

77 78

NC NC

79 80

NC NC

FD_DSKCHG_#

60

1 2

+5V INDEX

3 4

+5V DRIVE_SEL0

5 6

+5V DSKCHG

7 8

NC READY

9 10

DENSITY_OUT MOTORON

11 12

NC DIRECTION

13 14

DENSITY2 STEP

15 16

NC WRITEDAT

17 18

GND WRITEGATE

19 20

GND TRACK00

21 22

GND WP

23 24

GND READDAT

25 26

GND SIDE1SEL

Layout components

1

5V

2

GND

3

GND

4

12V

1 2

1 2

B B

1 2

1 2

1 2

1 2

1 2

LOUT ROUT

3 4

AGND GND

5 6

-RESET DD8

7 8

DD7 DD9

9 10

DD6 DD10

11 12

DD5 DD11

13 14

DD4 DD12

15 16

DD3 DD13

17 18

DD2 DD14

19 20

DD1 DD15

21 22

DD0 DMARQ

23 24

GND DIOR

25 26

-DIOW GND

27 28

IORDY DMACK

29 30

INTRQ -IOCS16

31 32

DA1 -PDIAG

33 34

DA0 DA2

35 36

-CS0 -CS1

37 38

-DASP +5V

39 40

+5V +5V

41

+5V

43

GND

45

GND

47

CSEL

49

A A

8

7

CSEL
0:MASTER
1:SLAVE

RESERVED

6

RESERVED

42

+5V

44

GND

46

GND

48

GND

50

PDIAG
0: 80PIN
1: 40PIN

5

4

3

1 2 1 2 1 2

7

8

9

6

2

5

3

4

7

8

9

6

2

5

3

4

2

7

8

9

6

2

5

3

4

1