AT&T 3B2/300 Technical Reference Manual page 795

- - - - - - - - - - - - - - - - Appendix: CONNECTOR AND CABLING INFORMATION
120-PIN VCACHE CARD EDGE CONNECTIONS
PIN
DESCRIPTION
FUNCTION
1 UBUS DATA STROBE (DS[O])
INPUT
2
NOT USED
NC
3
GROUND (GRD)
GROUND
4
UBUS DATA SHADOW (DSHAD[O])
INPUT
5
UBUS DATA SIZE BIT 1 (CDSIZEl[l])
INPUT
6
UBUS FAULT (FLT[O])
OUTPUT
7
UBUS CARD SELECT (CSl[O])
INPUT
8
GROUND (GRD)
GROUND
9
NOT USED
NC
10
NOT USED
NC
11
NOT USED
NC
12
UBUS SYNCHRONOUS READY (SRDY[O])
OUTPUT
13
UBUS DATA SIZE BIT O (CDSIZEO[l])
INPUT
14
UBUS ACCESS STATUS BIT O (SASO[l])
INPUT
15 +5V (VCC)
POWER
16 ACCESS STATUS BIT 1 (SASl[l])
INPUT
17
UBUS VIRTUAL ADDRESS STROBE (VAS[O])
INPUT
18 NOT USED
NC
19 UBUS CACHE ABLE (CABLE[O])
INPUT
20 GROUND (GRD)
GROUND
21
UBUS ABORT ACTIVATED (ABORT[O])
INPUT
22
UBUS DATA ACKNOWLEDGE (DTACK[O])
OUTPUT
23
UBUS ACCESS STATUS BIT 2 (SAS2[1])
INPUT
24
UBUS ACCESS STATUS BIT 3 (SAS3[1])
INPUT
25
NOT USED
NC
26
NOT USED
NC
27
GROUND (GRD)
GROUND
28
NOT USED
NC
29
UBUS EXECUTION MODE 1 (XMDl[l])
INPUT
30
UBUS VIRTUAL CACHE HIT (VCHIT[O])
OUTPUT
31 NOT USED
NC
32 +5v (VCC)
POWER
33 NOT USED
NC
34 NOT USED
NC
35 NOT USED
NC
36
NOT USED
NC
37
CLOCK 34 (CLK34[1])
INPUT
38
NOT USED
NC
39
GROUND (GRD)
GROUND
40 NOT USED
NC
41
CLOCK 23 (CLK23[1])
INPUT
42
SYSTEM RESET (SYSRST[O])
INPUT
43 NOT USED
NC
44 NOT USED
NC
45 UBUS ADDRESS BIT 31 (CA31[1])
INPUT
46
UBUS ADDRESS BIT 30 (CA30[1])
INPUT
47 UBUS ADDRESS BIT 29 (CA29[1])
INPUT
48 UBUS ADDRESS BIT 28 (CA28[1])
INPUT
49
UBUS ADDRESS BIT 27 (CA27[1]) INPUT
50 UBUS ADDRESS BIT 26 (CA26[1])
INPUT
51 GROUND (GRD)
GROUND
52
UBUS ADDRESS BIT 25 (CA25[1]) INPUT
53 UBUS ADDRESS BIT 24 (CA24[1])
INPUT
54
UBUS ADDRESS BIT 23 (CA23[1]) INPUT
55
UBUS ADDRESS BIT 22 (CA22[1])
INPUT
56
+5V (VCC)
POWER
57
UBUS ADDRESS BIT 21 (CA21[1])
INPUT
58
UBUS ADDRESS BIT 20 (CA20[1]) INPUT
59 UBUS ADDRESS BIT 19 (CAI 9[1])
INPUT
60
UBUS ADDRESS BIT 18 (CA18[1])
INPUT
CONNECTOR AND CABLING INFORMATION B-213