Siemens PC 670 用户手册
Hardware Information
Release 04/02
7-32
Panel PC 670 Computing Unit, Equipment Manual
7.6
Wiring Backplane
7.6.1
Design and Theory of Operation
The bus board is designed as a passive link between the motherboard and the
expansion modules. It is mounted with a screw.
expansion modules. It is mounted with a screw.
The bus board has two ISA slots and two PCI slots, as well as a shared
ISA /PCI slot. The power supply to the expansion cards is effected via the
connection of the bus unit with the basic board. An external power supply (+5V and
+12V) is provided.
ISA /PCI slot. The power supply to the expansion cards is effected via the
connection of the bus unit with the basic board. An external power supply (+5V and
+12V) is provided.
Figure 7-10
Wiring Backplane
7.6.2
Pin assignmentI SA slot
Pin No.
Short Name
Type*
Pin No.
Short Name
Type
A1
IOCHCK
I
B1
0 V
GND
A2
SD 07
I/O
B2
RESET DRV
O
A3
SD 06
I/O
B3
+ 5V
V
CC
A4
SD 05
I/O
B4
IRQ 9
I
A5
SD 04
I/O
B5
– 5V
V
CC
A6
SD 03
I/O
B6
Reserved
I
A7
SD 02
I/O
B7
– 12V
V
CC
A8
SD 01
I/O
B8
Reserved
I
A9
SD 00
I/O
B9
+ 12V
V
CC
A10
IOCHRDY
I
B10
0 V
GND
A11
AEN
O
B11
SMEMW#
O