AT&T 3B2/300 Technical Reference Manual page 687

- - - - - - - - - - - - - - - - Appendix: CONNECTOR AND CABLING INFORMATION
11119
120
II
II
120-PIN PROCESSING BUS (PBUS) EDGE CONNECTIONS
PIN DESCRIPTION
FUNCTION
(From Svstem 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 (UINTlO[O])
INPUT
005
BUB INTERRUPT LEVEL 12 (UINT12[0])
INPUT
006 +5V (VCC)
POWER
007
BUB INTERRUPT LEVEL 14 (UINT14[0])
INPUT
008
GROUND (GRD)
GROUND
009 BUB PHYSICAL ADDRESS STROBE (UPAS[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 (BDI3[1])
INPUT /OUTPUT
035 +12V (VI2P)
POWER
036 BUB DATA BIT 11 (BDll[l])
INPUT /OUTPUT
037 BUB DATA BIT 10 (BDlO[l])
INPUT /OUTPUT
038 -12V (Vl2N)
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
NOT USED NC
053
NOT USED NC
054
NOT USED NC
055 NOT USED NC
056 +5V (VCC) POWER
057 BUB ADDRESS BIT 26 (BA26[1])
INPUT /OUTPUT
058
BUB ADDRESS BIT 25 (BA25[1]) INPUT /OUTPUT
CONNECTOR AND CABLING INFORMATION B-105