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General Description
1.5.7
Backpanel Interface
All connections to the computer chassis and peripheral devices (other than the front panel and EIA
port) are through the backpanel connector. Table 1-5 and Table 1-6 list the pins and definitions for
the backpanel connector.
Table 1-5.
Backpanel Connector P1
Pin
Slot 1
Not Slot
Number
Signal
In/Out
1 Signal
In/Out
Comments
1,2
GND
—
GND
—
3, 4
+5 MAIN
|
+5 MAIN
|
5, 6
NO CONNECT
—
NO CONNECT
—
(+ 12V MEMORY)
7, 8
+5 MEMORY
|
+5 MEMORY
|
MAIN AFTER SLOT 7
9, 10
NO CONNECT
—
NO CONNECT
—
(-5V MEMORY)
11
TLREAD
0
TLREAD
/O
12
GND
—
GND
—
13
TLPRES-
|
TLPRES-
|
14
TLIORES-
O
TLIORES-
|
470 OHM
PULL-UP
'
IN SLOT 1
15
GND
—
GND
—
16
TLPFWP-
| °
TLPFWP-
|
17
GND
—
GND
—
18
CRUBITOUT
O
OPEN(CRUBITOUT)*
—
19
GND
—
GND
—
20
TLTM-
/O
TLTM-
/O
21
GND
—
GND
—
22
STORECLK-
O
OPEN(STORECLK-)'*
—
23
MODSELO-
O
OPEN*
—
24
GND
—
GND
—
25
TLGO-
VO
TLGO-
lO
26
GND
—
GND
—
27
TLDAT12-
/O
TLDAT12-
V/O
28
TLDAT13-
0
TLDAT13-
/O
29
120HZ
|
120HZ
|
30
TLDAT14-
0
TLDAT14-
/O
31
TLDAT15-
VO
TLDAT15-
/O
32
CRUBIT13
O
OPEN(CRUBIT13)*
_—
33
NO CONNECT
—
NO CONNECT
—
IAQ- ON /10
34
CRUBIT15
O
OPEN(CRUBIT15)*
—
35
MODSEL1-
O
OPEN *
—
36
CRUBIT12
O
OPEN(CRUBIT12)*
—
37
MODSEL2-
O
OPEN *
—
38
CRUBIT14
O
OPEN(CRUBIT14)*
—
39, 40
NO CONNECT
—
NO CONNECT
—
(+ 12V MAIN)
41, 42
NO CONNECT
—
NO CONNECT
—
(-12V MAIN)
43
MODSEL3-
O
OPEN*
—
44:
MODSEL4-
O
OPEN*
—
45
MODSEL5-
O
OPEN*
—
46
MODSEL6-
O
OPEN*
—
47
MODSEL/7-
O
OPEN*
—
1-20
2302633-9701
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