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Interface To The Motherboard - Siemens SIMATIC Box PC 620 Manual

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8.8.2

Interface to the Motherboard

The connection to the motherboard is established by a gold-colored EISA indirect
connector. All the required bus signals (ISA and PCI) are present on this
connector. The following table shows the pin assignments.
ISA Bus Signals
Signal
Signal
A
name
B
name
1
iochk#
1
gnd
2
sd7
2
rstdrv
3
sd6
3
+5V
4
sd5
4
irq9
5
sd4
5
-5V
6
sd3
6
drq2
7
sd2
7
-12V
8
sd1
8
0ws#
9
sd0
9
+12V
10 iochrdy
10 gnd
11
aen
11
smemw#
12 sa19
12 smemr#
13 sa18
13 iow#
14 sa17
14 ior#
15 sa16
15 dack3#
16 sa15
16 drq3
17 sa14
17 dack1#
18 sa13
18 drq1
19 sa12
19 refresh#
20 sa11
20 sysclk
21 sa10
21 irq7
22 sa9
22 irq6
23 sa8
23 irq5
24 sa7
24 irq4
25 sa6
25 irq3
26 sa5
26 dack2#
27 sa4
27 t/c
28 sa3
28 bale
29 sa2
29 +5V
30 sa1
30 osc
31 sa0
31 gnd
SIMATIC Box PC 620 Manual
C79000-G7076-C639-04
Signal
Signal
C
name
D
name
1
sbhe#
1
memcs
16#
2
la23
2
iocs16#
3
la22
3
irq10
4
la21
4
irq11
5
la20
5
irq12
6
la19
6
irq15
7
la18
7
irq14
8
la17
8
dack0#
9
memr#
9
drq0
1
memw
10 dack5#
0
#
1
sd8
11
drq5
1
1
sd9
12 dack6#
2
1
sd10
13 drq6
3
1
sd11
14 dack7#
4
1
sd12
15 drq7
5
1
sd13
16 +5V
6
1
sd14
17 ma-
7
ster#
1
sd15
18 gnd
8
PCI Bus Signals
Signal
Signal
E
name
F
name
1
gnd
1
clk
(slot3)
2
gnd
2
gnd
3
inta#
3
intc#
4
intb#
4
intd#
5
+5V
5
+5V
7
+5V
7
+5V
8
rst#
8
clk (slot
1)
9
gnt#
9
gnd
(slot 1)
10 req#
10 gnt#
(slot1)
(slot 2)
11
gnd
11
gnd
12 clk (slot
12 req#
2)
(slot2)
13 gnd
13 ad31
14 ad30
14 ad29
15 Req_N3 15 GNT_N
3
17 +3,3V
17 +3,3V
18 ad28
18 ad27
19 ad26
19 ad25
20 ad24
20 c/be3#
21 ad22
21 ad23
22 ad20
22 ad21
23 ad18
23 ad19
24 +3,3V
24 +3,3V
26 +3,3V
26 +3,3V
27 ad16
27 ad17
28 frame#
28 irdy#
29 c/be2#
29 devsel#
30 trdy#
30 lock#
31 stop#
31 perr#
Hardware Information
Signal
Signal
G
name
H
name
1
sdone
1
serr#
2
sbo#
2
ad15
3
c/be1#
3
ad14
4
par
4
ad12
5
gnd
5
gnd
7
gnd
7
gnd
8
ad13
8
ad10
9
ad11
9
ad8
1
ad9
10 ad7
0
1
c/be0#
11
ad5
1
1
ad6
12 ad3
2
1
ad4
13 ad1
3
1
ad2
14 ad0
4
1
+5V
16 +5V
6
1
+5V
17 +5V
7
1
gnd
18 gnd
8
1
gnd
19 gnd
9
8-39

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