Backplanes - detailed slot descriptions

Owned by Frits Jalvingh
Last updated: May 28, 2023
4 min read

Notes: DD11 Unibus Backplane

Unibus Backplanes

Type

Slots

Description

Type

Slots

Description

DD11-A

4

The end slots are Unibus in rows A and B, one of the middle sp;slots, row A is for the power connection. Rows C to F are SPC.

DD11-B

4

The end slots are Unibus in rows A and B, the middle slots, rows A and B are for DF11. Rows C to F are SPC. Power connection is via a harness and faston tabs.

DD11-CF

4

The end slots are Unibus in rows A and B, the middle slots, rows A and B are MUD (?). Rows C to F are SPC. Power connection is via a soldered harness for a BA11-F mounting box.

DD11-CK

4

The end slots are Unibus in rows A and B, the middle slots, rows A and B are MUD (?). Rows C to F are SPC. Power connection is via a soldered harness for a BA11-K mounting box.

DD11-DF

9

The end slots are Unibus in rows A and B, the middle slots, rows A and B are MUD (?). Rows C to F are SPC. Power connection is via a soldered harness for a BA11-F mounting box.

DD11-DK

9

The end slots are Unibus in rows A and B, the middle slots, rows A and B are MUD (?). Rows C to F are SPC. Power connection is via a soldered harness for a BA11-K mounting box.

 

Detailed Slot Descriptions

Backplanes viewed from the wiring side.

DD11-A

 

A

B

C

D

E

F

4

UNIBUS

SPC

3

Power

unused

SPC

2

unavailable

unused

SPC

1

UNIBUS

SPC

DD11-B

 

A

B

C

D

E

F

4

UNIBUS

SPC

3

DF11

SPC

2

DF11

SPC

1

UNIBUS

SPC

DD11-C

 

A

B

C

D

E

F

4

UNIBUS

SPC

3

Modified UNIBUS

SPC

2

Modified UNIBUS

SPC

1

UNIBUS

SPC

DD11-D

 

A

B

C

D

E

F

9

UNIBUS

SPC

8

Modified UNIBUS

SPC

7

Modified UNIBUS

SPC

6

Modified UNIBUS

SPC

5

Modified UNIBUS

SPC

4

Modified UNIBUS

SPC

3

Modified UNIBUS

SPC

2

Modified UNIBUS

SPC

1

UNIBUS

SPC

 

UNIBUS Pin Designations

 

Row A

Row B

 

1

2

1

2

A

INIT L

+5V

BG6 H

+5V

B

INTR L

GND

BG5 H

GND

C

D00 L

GND

BR5 L

GND

D

D02 L

D01 L

GND

BR4 L

E

D04 L

D03 L

GND

BG4 H

F

D06 L

D05 L

AC LO L

DC LO L

H

D08 L

D07 L

A01 L

A00 L

J

D10 L

D09 L

A03 L

A02 L

K

D12 L

D11 L

A05 L

A04 L

L

D14 L

D13 L

A07 L

A06 L

M

PA L

D15 L

A09 L

A08 L

N

GND

PB L

A11 L

A10 L

P

GND

BBSY L

A13 L

A12 L

R

GND

SACK L

A15 L

A14 L

S

GND

NPR L

A17 L

A16 L

T

GND

BR7 L

GND

C1 L

U

NPG H

BR6 L

SSYN L

C0 L

V

BG7 SO

GND

MSYN L

GND

aa

Modified UNIBUS Pin Designations

 

 

Row A

Row B

 

1

2

1

2

A

INIT L

+5V

RESV

+5V

B

INTR L

GND

RESV

TP

C

D00 L

GND

BR5 L

GND

D

D02 L

D01 L

+5 BAT

BR4 L

E

D04 L

D03 L

INT SSYN

PAR DET

F

D06 L

D05 L

AC LO L

DC LO L

H

D08 L

D07 L

A01 L

A00 L

J

D10 L

D09 L

A03 L

A02 L

K

D12 L

D11 L

A05 L

A04 L

L

D14 L

D13 L

A07 L

A06 L

M

PA L

D15 L

A09 L

A08 L

N

PAR P1

PB L

A11 L

A10 L

P

PAR P0

BBSY L

A13 L

A12 L

R

+15 BAT

SACK L

A15 L

A14 L

S

-15 BAT

NPR L

A17 L

A16 L

T

GND

BR7 L

GND

C1 L

U

+20 CORE

BR6 L

SSYN L

C0 L

V

+20 CORE

+20 CORE

MSYN L

-5 CORE

 

 

Unibus / Modified unibus difference

 

Row A

Row B

 

1UB

1MUD

2UB

2MUD

1UB

1MUD

2UB

2MUD

A

INIT L

+5V

BG6 H

RESV

+5V

B

INTR L

GND

BG5 H

RESV

GND

TP

C

D00 L

GND

BR5 L

GND

D

D02 L

D01 L

GND

+5V BAT

BR4 L

E

D04 L

D03 L

GND

INT SSYN

BG4 H

PAR DET

F

D06 L

D05 L

AC LO L

 

DC LO L

H

D08 L

D07 L

A01 L

 

A00 L

J

D10 L

D09 L

A03 L

 

A02 L

K

D12 L

D11 L

A05 L

 

A04 L

L

D14 L

D13 L

A07 L

 

A06 L

M

PA L

D15 L

A09 L

 

A08 L

N

GND

PAR P1

PB L

A11 L

 

A10 L

P

GND

PAR P0

BBSY L

A13 L

 

A12 L

R

GND

+15V BAT

SACK L

A15 L

 

A14 L

S

GND

-15V BAT

NPR L

A17 L

 

A16 L

T

GND

BR7 L

GND

 

C1 L

U

NPG H

+20 CORE

BR6 L

SSYN L

 

C0 L

V

BG7 SO

+20 CORE

GND

+20 CORE

MSYN L

 

GND

-5V CORE

 

 

 

SPC Pin Designations

 

Row C

Row D

Row E

Row F

 

1

2

1

2

1

2

1

2

A

NPG IN

+5V

TP

+5V

GND

+5V

ABG OUT

+5V

B

NPG OUT

-15V

TP

-15V

ASSYN IN H

-15V

ABG IN

-15V

C

PA L

GND

A SEL 6

GND

A12 L

GND

SSYN L

GND

D

LTC

D15 L

A OUT L

BR7 L

A17 L

A15 L

BBSY L

F01 N1

E

TP

D14 L

A SEL 4

BR6 L

MSYN L

A16 L

F01 V2

D02 L

F

TP

D13 L

A SEL 0

BR5 L

A02 L

C1 L

D05 L

D06 L

H

D11 L

D12 L

A IN

BR4 L

A01 L

A00 L

D07 L

A INT ENBB

J

A INT B

D10 L

A SEL 4

A BR OUT

SSYN L

C0 L

NPR L

GND A

K

TP

D09 L

A OUT

BG7 SO

A14 L

A13 L

D08 L

A INT B

L

A INT ENBB

D08 L

INIT L

BG7 OUT

A11 L

TP

D03 L

F01 L2

M

TP

D07 L

A INT ENBA

BG6 SO

A IN

A OUT H

INTR L

F01 M2

N

DC LO

D04 L

A INT A

BG6 OUT

A OUT L

A08 L

F01 N1

D04 L

P

HALT REQ

D05 L

TP

BG5 SO

A10 L

A07 L

ABR OUT

F01 P2

R

HALT GRT

D01 L

TP

BG5 OUT

A09 L

A SEL 4

F01 L2

F01 N1

S

PB L

D00 L

TP

BG4 SO

A SEL 6

A SEL 0

F01 M2

F01 P2

T

GND

D03 L

GND

BG4 OUT

GND

A SEL 2

GND

SACK L

U

+15/+8

D02 L

TP

ABG IN

A06 L

A04 L

A INT A

ABR OUT

V

AC LO

D06 L

ASSYN IN H

ABG OUT

A05 L

A03 L

A INT ENBA

F01 F01

 

 

11/40 Power Distribution Panel

Connector: AMP 9 pin MATE-N-LOC™

Pin

AWG

Color

Function

Slot Pins

1

18

violet

DCLO

BF2, CN1

2

18

yellow

ACLO

BF1

3

18

blue

-15V

CB2, CC2, CD2, CE2

4

14

black

GND

 

5

14

black

GND

 

6

 

 

n/c

 

7

18

brown

LTC

CD1

8

14

grey

+15V

CU1

9

14

red

+5V

AA2, BA2, CA2, DA2, EA2, FA2

DD11-DK Power Connections

P2 Connector: AMP 15 pin MATE-N-LOC™ (Also on DD11-CK)

Pin

AWG

Color

Function

Slot Pins

1

14

red

+5V

AA2, BA2, CA2, DA2, EA2, FA2

2

18

grey

+15V

CU1

3

14

orange

+20V core

AU1, AV1, AV2

4

14

red

+5V

AA2, BA2

5

 

 

 

 

6

 

 

 

 

7

 

 

 

 

8

14

black

GND

 

9

14

black

GND

 

10

 

 

 

 

11

 

 

 

 

12

14

red

+5VB

BD1

13

 

 

 

 

14

18

brown

-5V core

BV2

15

 

 

 

 

P3 Connector: AMP 6 pin MATE-N-LOC™ (Also on DD11-CK)

Pin

AWG

Color

Function

Slot Pins

1

14

black

GND

 

2

18

brown

LTC

CD1

3

18

violet

DCLO

BF2, CN1

4

18

yellow

ACLO

BF1

5

 

 

 

 

6

 

 

 

 

P4 Connector: AMP 15 pin MATE-N-LOC™ (Not available on DD11-CK)

Pin

AWG

Color

Function

Slot Pins

1

14

red

+5V

AA2, BA2, CA2, DA2, EA2, FA2

2

 

 

 

 

3

14

orange

+20V core

AU1, AV1, AV2

4

14

red

+5V

AA2, BA2, CA2, DA2, EA2, FA2

5

 

 

 

 

6

18

white

+15VB

AR1

7

 

 

 

 

8

14

black

GND

 

9

14

black

GND

 

10

 

 

 

 

11

 

 

 

 

12

 

 

 

 

13

18

blue

-15V

CB2, CC2, CD2, CE2

14

 

 

 

 

15

18

green

-15VB

AS1

 

 

 

 

 

 

 

 

Original here

Power supply connectors

These connectors are all “MATE-N-LOK” connectors from TE Connectivity. This connector family consists of housings and pins sold separately in different form factors and pin sizes. Some parts can be obtained from conrad.nl; search for MATE-N-LOK.

I got the following to work with the connectors:

  • TE Connectivity 163304-2 Krimpcontact MATE-N-LOK, female pin, max 15A, 17 AWG Max, 20AWG Min, min dwarsdoortsnede 0.5mm2, max 1.0mm2

The corresponding pin seems to be this:

A male housing that is not fully compatible but which has at least proper spacing seems to be this: