AT&T 3B2/300 Technical Reference Manual page 683

- - - - - - - - - - - - - - - - - Appendix: CONNECTOR AND CABLING INFORMATION
II II
120-PIN BUFFERED MICROBUS (BUB) EDGE CONNECTIONS
PIN
DESCRIPTION
FUNCTION
(From System Board)
001 BUB CONNECTOR INHIBIT SLOT O (BINHIBO[O])
OUTPUT
002 GROUND (GRD)
GROUND
003 OPERATIONAL INTERRUPT LEVEL 15 (OPINT15[0])
INPUT
004 BUB INTERRUPT LEVEL 10 (BINTOlO[O])
INPUT
005
BUB INTERRUPT LEVEL 12 (BINTOI2[0]) INPUT
006 +5V (VCC)
POWER
007
BUB INTERRUPT LEVEL 14 (BINT014[0]) INPUT
008
GROUND (GRD)
GROUND
009 BUB FAILURE (BFAIL[O])
INPUT
010
BUB DATA BIT 31 (BD31[1])
INPUT /OUTPUT
011 BUB DATA BIT 30 (BD30[1])
INPUT /OUTPUT
012 BUB DATA BIT 29 (BD29[1])
INPUT /OUTPUT
013 BUB DATA BIT 28 (BD28[1])
INPUT /OUTPUT
014 GROUND (GRD)
GROUND
015 +5V (VCC)
POWER
016
BUB DATA BIT 26 (BD26[1]) INPUT /OUTPUT
017
BUB DATA BIT 27 (BD27[1]) INPUT /OUTPUT
018
BUB DATA BIT 25 (BD25[1])
INPUT/OUTPUT
019
BUB DATA BIT 24 (BD24[1]) INPUT /OUTPUT
020 GROUND (GRD)
GROUND
021 BUB DATA BIT 22 (BD22[1])
INPUT /OUTPUT
022 BUB DATA BIT 23 (BD23[1])
INPUT /OUTPUT
023 BUB DATA BIT 21 (BD21[1])
INPUT /OUTPUT
024 BUB DATA BIT 20 (BD20[1])
INPUT /OUTPUT
025 BUB DATA BIT 18 (BD18[1])
INPUT/OUTPUT
026 BUB DATA BIT 19 (BD19[1])
INPUT /OUTPUT
027 GROUND (GRD)
GROUND
028 BUB DATA BIT 17 (BD17[1])
INPUT /OUTPUT
029 BUB DATA BIT 16 (BD16[1])
INPUT /OUTPUT
030 BUB DATA BIT 14 (BD14[1])
INPUT/OUTPUT
031 BUB DATA BIT 15 (BD15[1])
INPUT /OUTPUT
032 +5V (VCC)
POWER
033
BUB DATA BIT 12 (BD12[1]) INPUT /OUTPUT
034
BUB DATA BIT 13 (BD13[1])
INPUT /OUTPUT
035
+12V (V12P)
POWER
036 BUB DATA BIT 11 (BDll[l])
INPUT /OUTPUT
037 BUB DATA BIT 10 (BD10[1])
INPUT/OUTPUT
038 -12V (V12N)
POWER
039 GROUND (GRD)
GROUND
040 BUB DATA BIT 08 (BD08[1])
INPUT /OUTPUT
041
BUB DATA BIT 09 (BD09[1]) INPUT /OUTPUT
042 BUB DATA BIT 07 (BD07[1]) INPUT /OUTPUT
043 BUB DATA BIT 06 (BD06[1])
INPUT /OUTPUT
044 BUB DATA BIT 05 (BD05[1])
INPUT /OUTPUT
045
BUB DATA BIT 04 (BD04[1]) INPUT /OUTPUT
046 GROUND (GRD) GROUND
047 BUB DATA BIT 03 (BD03[1]) INPUT /OUTPUT
048
BUB DATA BIT 02 (BD02[1]) INPUT /OUTPUT
049 BUB DATA BIT 00 (BDOO[l]) INPUT /OUTPUT
050 BUB DATA BIT 01 (BDOl[l]) INPUT /OUTPUT
051 GROUND (GRD)
GROUND
052 BUB DATA PARITY BIT O (BDPO[l]) INPUT /OUTPUT
053 BUB DATA PARITY BIT 1 (BDPl[l]) INPUT /OUTPUT
054
BUB DATA PARITY BIT 3 (BDP3[1]) INPUT /OUTPUT
055
BUB DATA PARITY BIT 2 (BDP2[1]) INPUT /OUTPUT
056 +5V (VCC)
POWER
CONNECTOR AND CABLING INFORMATION B-101