Section 1
Connectors

This section contains information on the connectors used by the reference design.

The ISA and PCI bus connectors are mounted to the riser board. See the Riser section.

The RISCWatch connector and configuration jumpers are described in JTAG/RISCWatch Interface in the CPU Bus section.

The physical dimensions of the connectors are shown in the Mechanical section.

1.1 Connector Locations

external GIF

1.2 Connectors

1.2.1 Battery Connector BATTERY

The battery type is CR2032 3 Volt. Insert the battery with + side up.

1.2.2 DRAM SIMM Connectors J0, J1, J2, J3, J4, J5, J6, J7



SIMM Pin

 Motherboard Pin

 Signal

 SIMM Pin

Motherboard Pin

 Signal
1

1

GROUND

37

37

DQ17

2

2

DQ0

38

38

DQ35

3

3

DQ18

39

39

GROUND

4

4

DQ1

40

40

CAS0#

5

5

DQ19

41

41

CAS2#

6

6

DQ2

42

42

CAS3#

7

7

DQ20

43

43

CAS1#

8

8

DQ3

44

44

RAS0#

9

9

DQ21

45

45

RAS1#

10

10

+5 V

46

46

BS1

11

11

CASP

47

47

WE#

12

12

A0

48

48

RESD1

13

13

A1

49

49

DQ9

14

14

A2

50

50

DQ27

15

15

A3

51

51

DQ10

16

16

A4

52

52

DQ28

17

17

A5

53

53

DQ11

18

18

A6

54

54

DQ29

19

19

A10

55

55

DQ12

20

20

DQ4

56

56

DQ30

21

21

DQ22

57

57

DQ13

22

22

DQ5

58

58

DQ31

23

23

DQ23

59

59

+5 V

24

24

DQ6

60

60

DQ32

25

25

DQ24

61

61

DQ14

26

26

DQ7

62

62

DQ33

27

27

DQ25

63

63

DQ15

28

28

A7

64

64

DQ34

29

29

BS0/A11

65

65

DQ16

30

30

+5V

66

66

BS2

31

31

A8

67

67

PD1

32

32

A9

68

68

PD2

33

33

RAS3#

69

69

PD3

34

34

RAS2#

70

70

PD4

35

35

DQ26

71

71

BS3

36

36

DQ8

72

72

GROUND

1.2.3 Mouse Connector J10

The mouse connector uses a 6-pin miniature DIN connector.



Pin

I/O

SIGNAL NAME

1

I/O

Data

2

NA

Reserved

3

NA

Ground

4

NA

+ 5v

5

I/O

Clock

6

NA

Reserved

1.2.4 Keyboard Connector J11

The keyboard connector uses a 6-pin miniature DIN connector.



Pin

I/O

SIGNAL NAME

1

I/O

Data

2

NA

Reserved

3

NA

Ground

4

NA

+ 5v

5

I/O

Clock

6

NA

Reserved

1.2.5 Power Connector J13

Pin

Signal Name

1

POWER GOOD

2

+5v

3

+12v

4

-12v

5

Ground

6

Ground

7

Ground

8

Ground

9

-5v

10

+5v

11

+5v

12

+5v

1.2.6 Riser Connector J14

This is the motherboard edge card connector that the riser card plugs into.



Table 1. J14 Riser Connector Pin Assignments

Pin

Function

Pin

Function

A1

ISA IO CHCK#

B1

GROUND

A2

-5 VOLTS

B2

-12 VOLTS

A3

SD(7)

B3

ISA RESET

A4

SD(6)

B4

-12 VOLTS

A5

SD(5)

B5

ISA IRQ9

A6

SD(4)

B6

+12 VOLTS

A7

SD(3)

B7

ISA DRQ(2)

A8

SD(2)

B8

+12 VOLTS

A9

SD(1)

B9

ISA ZERO WS#

A10

SD(0)

B10

+12 VOLTS

A11

GROUND

B11

+5 VOLTS

A12

ISA IO CHRDY

B12

GROUND

A13

ISA AEN

B13

ISA SMEMW#

A14

ISA SA(19)

B14

ISA SMEMR#

A15

ISA SA(18)

B15

ISA IOW#

A16

ISA SA(17)

B16

ISA IOR#

A17

ISA SA(16)

B17

ISA DACK(3)#

A18

ISA SA(15)

B18

ISA DRQ(3)

A19

ISA SA(14)

B19

ISA DACK(1)#

A20

ISA SA(13)

B20

ISA DRQ(1)

A21

ISA SA(12)

B21

ISA REFRESH#

A22

GROUND

B22

GROUND

A23

PCI TRST# (res)

B23

+5 VOLTS

A24

+5 VOLTS

B24

ISA TCK (res)

A25

PCI TMS (res)

B25

GROUND

A26

PCI TDI (res)

B26

PCI TDO (res)

A27

+5 VOLTS

B27

GROUND

A28

PCI_IRQ9#

B28

+5 VOLTS

A29

RESERVED

B29

PCI_IRQ11#

A30

+5 VOLTS

B30

RESERVED

A31

RESERVED

B31

PCI PRESENT 1#

A32

+5 VOLTS

B32

GROUND

A33

PCI_GNT0#(res)

B33

PCI PRESENT 2#

A34

PCI_REQ0#(res)

B34

GROUND

A35

+5 VOLTS

B35

CLOCK SLOT 1

A36

PCI RESET 1#

B36

GROUND

A37

+5 VOLTS

B37

CLOCK SLOT 2

A38

PCI RESET 2#

B38

GROUND

A39

PCI GNT 1#

B39

GROUND

A40

GROUND

B40

PCI REQ 1#

A41

PCI GNT 2#

B41

PCI REQ 2#

A42

RESERVED

B42

+5 VOLTS

A43

+5 VOLTS

B43

GROUND

A44

PCI IDSEL 2

B44

RESERVED

A45

GROUND

B45

+5 VOLTS

A46

PCI A/D(30)

B46

PCI A/D(31)

A47

+5 VOLTS

B47

PCI A/D(29)

A48

PCI A/D(28)

B48

GROUND

A49

PCI A/D(26)

B49

PCI A/D(27)

A50

GROUND

B50

PCI A/D(25)

A51

PCI A/D(24)

B51

+5 VOLTS

A52

PCI IDSEL 1

B52

C/BE#(3)

A53

+5 VOLTS

B53

PCI A/D(23)

A54

PCI A/D(22)

B54

GROUND

A55

PCI A/D(20)

B55

PCI A/D(21)

A56

GROUND

B56

PCI A/D(19)

A57

PCI A/D(18)

B57

+5 VOLTS

A58

PCI A/D(16)

B58

PCI A/D(17)

A59

+5 VOLTS

B59

C/BE#(2)

A60

PCI FRAME#

B60

GROUND

A61

GROUND

B61

PCI IRDY#

A62

PCI TRDY#

B62

+5 VOLTS

A63

GROUND

B63

PCI DEVSEL#

A64

PCI STOP#

B64

GROUND

A65

+5 VOLTS

B65

PCI LOCK#

A66

PCI SDONE (res)

B66

PCI PERR#

A67

PCI SBO# (res)

B67

+5 VOLTS

A68

GROUND

B68

PCI SERR#

A69

PCI PAR

B69

+5 VOLTS

A70

PCI A/D(15)

B70

C/BE#(1)

A71

+5 VOLTS

B71

PCI A/D(14)

A72

PCI A/D(13)

B72

GROUND

A73

PCI A/D(11)

B73

PCI A/D(12)

A74

GROUND

B74

PCI A/D(10)

A75

PCI A/D(9)

B75

GROUND

A76

C/BE#(0)

B76

PCI A/D(8)

A77

+5 VOLTS

B77

PCI A/D(7)

A78

PCI A/D(6)

B78

+5 VOLTS

A79

PCI A/D(4)

B79

PCI A/D(5)

A80

GROUND

B80

PCI A/D(3)

A81

PCI A/D(2)

B81

GROUND

A82

PCI A/D(0)

B82

PCI A/D(1)

A83

+5 VOLTS

B83

+5 VOLTS

A84

PCI REQ64#

B84

PCI ACK64#

A85

+5 VOLTS

B85

+5 VOLTS

A86

+5 VOLTS

B86

+5 VOLTS

A87

GROUND

B87

GROUND

A88

ISA SA(11)

B88

GROUND

A89

+5 VOLTS

B89

ISA SYSCLK

A90

ISA SA(10)

B90

GROUND

A91

ISA SA(9)

B91

ISA_IRQ7

A92

ISA SA(8)

B92

ISA_IRQ6

A93

ISA SA(7)

B93

ISA_IRQ5

A94

ISA SA(6)

B94

ISA_IRQ4

A95

ISA SA(5)

B95

ISA_IRQ3

A96

ISA SA(4)

B96

ISA DACK(2)#

A97

ISA SA(3)

B97

ISA TC

A98

ISA SA(2)

B98

ISA BALE

A99

ISA SA(1)

B99

RESERVED

A100

ISA SA(0)

B100

GROUND

A101

GROUND

B101

ISA OSCILLATOR

A102

RESERVED

B102

+5 VOLTS

A103

ISA SBHE#

B103

ISA MEMCS16#

A104

LA(23)

B104

ISA IOCS16#

A105

LA(22)

B105

ISA_IRQ10

A106

LA(21)

B106

ISA_IRQ11

A107

LA(20)

B107

ISA_IRQ12

A108

LA(19)

B108

ISA_IRQ15

A109

LA(18)

B109

ISA_IRQ14

A110

LA(17)

B110

ISA DACK(0)#

A111

ISA MEMR#

B111

ISA DRQ(0)

A112

ISA MEMW#

B112

ISA DACK(5)#

A113

SD(8)

B113

ISA DRQ(5)

A114

SD(9)

B114

ISA DACK(6)#

A115

SD(10)

B115

ISA DRQ(6)

A116

SD(11)

B116

ISA DACK(7)#

A117

SD(12)

B117

ISA DRQ(7)

A118

SD(13)

B118

+5 VOLTS

A119

SD(14)

B119

ISA MASTER#

A120

SD(15)

B120

GROUND

1.2.7 External SCSI Device Connector J19

J19 is a SCSI-2, 50 position socket connector.



Pin

Function

Pin

Function

1

GROUND

26

DATA 0

2

GROUND

27

DATA 1

3

GROUND

28

DATA 2

4

GROUND

29

DATA 3

5

GROUND

30

DATA 4

6

GROUND

31

DATA 5

7

GROUND

32

DATA 6

8

GROUND

33

DATA 7

9

GROUND

34

DATA P

10

GROUND

35

GROUND

11

GROUND

36

GROUND

12

RESERVED

37

RESERVED

13

NO CONNECTION

38

+5 VOLT

14

RESERVED

39

RESERVED

15

GROUND

40

GROUND

16

GROUND

41

ATTENTION#

17

GROUND

42

GROUND

18

GROUND

43

BUSY#

19

GROUND

44

ACKNOWLEDGE#

20

GROUND

45

RESET#

21

GROUND

46

MESSAGE#

22

GROUND

47

SELECT#

23

GROUND

48

CONTROL/DATA#

24

GROUND

49

REQUEST#

25

GROUND

50

INPUT/OUTPUT#

1.2.8 Ethernet 10BASE-T Connector J21

The motherboard is equipped with an Ethernet Local Area Network communication port.

J21 is an 8 pin RJ-45 jack.

Pin

 Signal

1

+ TRANSMIT DATA

2

- TRANSMIT DATA

3

+ RECEIVE DATA

4

NO CONNECTION

5

NO CONNECTION

6

- RECEIVE DATA

7

NO CONNECTION

8

NO CONNECTION

Sh

Shield Ground

1.2.9 CD-ROM Connector J22

J22 is a 4 position header connector.

Pin

Signal Name

1

LEFT CHANNEL

2

GROUND

3

GROUND

4

RIGHT CHANNEL

1.2.10 Momentary On-Off Power Switch Connector J23 (Not Used)

J23 is a 1x2 Berg type connector.

Pin

Signal Name

1

N.O. (AUX5v)

2

Common (Input)

1.2.11 Parallel Connector J25



J25
Pin

DB-25S
Pin

I/O

Signal Name

J25
Pin

DB-25S
Pin

I/O

Signal Name

1

1

O

STROBE#

14

14

O

AUTO FD XT#

2

2

I/O

DATA 0

15

15

I

ERROR#

3

3

I/O

DATA 1

16

16

O

INIT#

4

4

I/O

DATA 2

17

17

O

SLCT IN#

5

5

I/O

DATA 3

18

18

NA

GROUND

6

6

I/O

DATA 4

19

19

NA

GROUND

7

7

I/O

DATA 5

20

20

NA

GROUND

8

8

I/O

DATA 6

21

21

NA

GROUND

9

9

I/O

DATA 7

22

22

NA

GROUND

10

10

I

ACK#

23

23

NA

GROUND

11

11

I

BUSY

24

24

NA

GROUND

12

12

I

PE

25

25

I/O

GROUND

13

13

I

SLCT

26

26

#

No Connection

Note: The external parallel port may be located in an unused ISA slot or on the bulkhead of the enclosure. A 26-pin header and ribbon cable are used to connect the motherboard to the external connector.

1.2.12 Serial Port 1 (External) Connector J26

J27 is a DE-9P connector.

Pin

Signal Name

1

DATA CARRIER DETECT

2

RECEIVE DATA

3

TRANSMIT DATA

4

DATA TERMINAL READY

5

SIGNAL GROUND

6

DATA SET READY

7

REQUEST TO SEND

8

CLEAR TO SEND

9

RING INDICATOR

1.2.13 Serial Port 2 (Internal) Connector J27

J27 is a 2x5 Berg type header connector.

Pin

Signal Name

1

DATA CARRIER DETECT

2

RECEIVE DATA

3

TRANSMIT DATA

4

DATA TERMINAL READY

5

SIGNAL GROUND

6

DATA SET READY

7

REQUEST TO SEND

8

CLEAR TO SEND

9

RING INDICATOR

10

No Connection

1.2.14 Power Up Configuration Jumper J28

J28 is a 1x3 Berg type connector.

Install 1-2 To configure the power management controller to bring up the system when DC power is applied to the motherboard.

Install 2-3 To configure the power management controller not to bring up the system immediately when DC power is applied to the motherboard, but to wait for the reset button to be pressed.

1.2.15 AUX5/ON-OFF Connector J29

J29 is a 1x3 Berg type connector.

Pin

Signal Name

1

AUX5v

2

On/Off

3

Ground

1.2.16 Speaker Connector J31 and J39

J31 and J39 are identical 1x2 Berg type connectors. J39 pins are connected to J31 pins.

Pin

Signal Name

1

Plus output to speaker

2

Minus output to speaker

1.2.17 Internal SCSI Device Connector J32

J32 is a 2x25 pin header.



Pin

Function

Pin

Function

1

GROUND

2

DATA 0

3

GROUND

4

DATA 1

5

GROUND

6

DATA 2

7

GROUND

8

DATA 3

9

GROUND

10

DATA 4

11

GROUND

12

DATA 5

13

GROUND

14

DATA 6

15

GROUND

16

DATA 7

17

GROUND

18

DATA P

19

GROUND

20

GROUND

21

GROUND

22

GROUND

23

RESERVED

24

RESERVED

25

NO CONN

26

+5 VOLT

27

RESERVED

28

RESERVED

29

GROUND

30

GROUND

31

PULL UP

32

ATTENTION#

33

GROUND

34

GROUND

35

GROUND

36

BUSY#

37

GROUND

38

ACKNOWLEDGE#

39

GROUND

40

RESET#

41

GROUND

42

MESSAGE#

43

GROUND

44

SELECT#

45

GROUND

46

CONTROL/DATA#

47

GROUND

48

REQUEST#

49

GROUND

50

INPUT/OUTPUT#

1.2.18 Game Port Connector J33

J33 is a 2x8 Berg type connector.

Pin

Signal Name

A 1

+5v

A 2

JAB1 - Joystick A Button 1

A 3

JACX - Joystick A Coordinate X

A 4

Ground

A 5

Ground

A 6

JACY - Joystick A Coordinate Y

A 7

JAB2 - Joystick A Button 2

A 8

+5v

B 1

+5v

B 2

JBB1/FSYNC - Joystick B Button 1 / Frame Sync

B 3

JBCX/SDOUT - Joystick B Coordinate X / Serial Data Out

B 4

MIDIOUT - MIDI Out Transmit Data

B 45

JBCY/SDIN - Joystick B Coordinate Y / Serial Data In

B 6

JBB2/SCLK - Joystick B Button 2 / Serial Clock

B 7

MIDIIN - MIDI In Receive Data

B 8

No Connection

1.2.19 Fansink Connectors J34, J36, J43, J45

These are 1x3 Berg type connectors.

Pin

Signal Name

1

Ground

2

+12v

3

Ground

1.2.20 Box Fan Connector J37

This is a 1x3 Berg type connector.

Pin

Signal Name

1

Ground

2

+12v

3

Ground

1.2.21 Reset Switch Connector J38

J38 is a 1x2 Berg type connector.

Pin

Signal Name

1

Reset N.O. contact (close to reset)

2

Common contact

1.2.22 Line In Jack J40

J40 is a stereo 3.5mm (subminiature) 3 conductor phone jack.

Pin

 Position

 Signal

1

Sleeve

Ground

2

Tip

Left Channel

3

Ring

Right Channel

1.2.23 Power Good LED Connector J41

J41 is a 1x2 Berg type connector.

Pin

Signal Name

1

Output to LED anode

2

Output to LED cathode

1.2.24 Floppy Diskette Drive (FDD) Connector J42



Pin

Function

Pin

Function

1

GROUND

2

DENSITY SELECT

3

GROUND

4

DENS READ 1 (REG BIT 2)

5

GROUND

6

DATA RATE 0

7

GROUND

8

INDEX#

9

DENS READ 2 (REG BIT 3)

10

MOTOR SELECT 0#

11

GROUND

12

DRIVE SELECT 1#

13

GROUND

14

DRIVE SELECT 0#

15

GROUND

16

MOTOR SELECT 1#

17

DENS READ 3 (REG BIT 0)

18

DIRECTION#

19

GROUND

20

STEP#

21

GROUND

22

WRITE DATA#

23

GROUND

24

WRITE GATE#

25

GROUND

26

TRACK 0#

27

DENS READ 4 (REG BIT 1)

28

WRITE PROTECT#

29

GROUND

30

READ DATA#

31

GROUND

32

HEAD SELECT#

33

GROUND

34

DISK CHANGE#

1.2.25 HDD LED Connector J44

J44 is a 1x2 Berg type connector.

Pin

Signal Name

1

Output to LED anode

2

Output to LED cathode

1.2.26 Microphone Jack J46

J46 is a stereo 3.5mm (subminiature) 3 conductor phone jack.

Pin

 Position

 Signal

1

Sleeve

Ground

2

Tip

Left Channel

3

Ring

Right Channel

1.2.27 Line Out Jack J47

J40 is a stereo 3.5mm (subminiature) 3 conductor phone jack.

Pin

 Position

 Signal

1

Sleeve

Ground

2

Tip

Left Channel

3

Ring

Right Channel

1.2.28 Headphone Jack J48

J48 is a stereo 3.5mm (subminiature) 3 conductor phone jack.

Pin

 Position

 Signal

1

Sleeve

Ground

2

Tip

Left Channel

3

Ring

Right Channel

1.2.29 Internal/FaxModem Connector J49

J49 is a 2x4 Berg type connector.

Pin

Signal Name

1

No Connection

2

L+R MICROPHONE OUT (AMPLIFIED SUM OF L AND R MIC)

3

RIGHT CHANNEL OUT

4

LEFT CHANNEL OUT

5

LEFT CHANNEL IN (AUX 2)

6

GROUND

7

GROUND

8

RIGHT CHANNEL IN (AUX 2)

1.2.30 Riser 3.3v Power Connector J50

Pin

Signal Name

1

+3.3v

2

+3.3v

3

+3.3v

4

Ground

5

Ground

6

Ground



1.2.31 Riser 3.3v Power Cable



1.2.32 3.3v Power Connector J51

Pin

Signal Name

Pin

Signal Name

1

+3.3v

7

+3.3v

2

+3.3v

8

+3.3v

3

+3.3v

9

+3.3v

4

Ground

10

Ground

5

Ground

11

Ground

6

Ground

12

Ground