Siemens SIMATIC Box PC 820 Manual page 142

Bus Board
5.3 Pin Assignments
5.3.1 Interface to the Motherboard
The connection to the motherboard is established by a gold-plated 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 Ows#
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
5-4
Signal Signal
C name D name
1 sbhe# 1 memcs#
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
10 menw 10 dack5#
#
11 sd8 11 drq5
12 sd9 12 dack6#
13 sd10 13 drq6
14 sd11 14 dack7#
15 sd12 15 drq7
16 sd13 16 +5V
17 sd14 17 master#
18 sd15 18 gnd
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 +5
7 +5V 7 +5V
8 rst# 8 clk
(slot1)
9 gnt# 9 gnd
(slot1)
10 req# 10 gnt#
(slot1) (slot2)
11 gnd 11 gnd
12 clk 12 req#
(slot2) (slot2)
13 gnd 13 ad31
14 ad30 14 ad29
15 Req# 15 GNT_
(slot3) #Slot3
17 NC 17 NC
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 NC 24 NC
26 NC 26 NC
27 ad16 27 ad17
28 frame# 28 irdy#
29 c/be# 29 dev-
sel#
30 trdy# 30 plock#
31 stop# 31 perr#
Box PC 820 / PC FI45 V2, Manual
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
10 ad9 10 ad7
11 c7be0 11 ad5
#
12 ad6 12 ad3
13 ad4 13 ad1
14 ad2 14 ad0
16 +5V 16 +5V
17 +5 17 –5V
18 gnd 18 gnd
19 gnd 19 gnd
A5E00051531-03