Functional Description
CPC805
C P C 8 0 5 U s e r M a n u a l
25
© 2 0 1 2 F a s t w e l v . 0 0 1 a E P r e
Pin
A
B
C
D
18
IDSEL0
GND
IDSEL1
IDSEL2
19
AD24
/C/BE3
VI/O
IDSEL3
20
GND
AD26
AD25
GND
21
AD29
+5V
AD28
AD27
22
+5V
AD30
GND
AD31
23
/REQ0
GND
/REQ1
VI/O
24
GND
/REQ2
+5V
/GNT0
25
/GNT1
VI/O
/GNT2
GND
26
+5V
CLK0
GND
CLK1
27
CLK2
+5V
CLK3
GND
28
GND
/INTD
+5V
/RST
29
+12V
/INTA
/INTB
/INTC
30
-12V
Reserved
Reserved
GND/3.3V_KEY
When the processor module is powered via the unipolar power supply, the vo12V and -12V
are not supplied to PC/104 PCI and StackPC expansion modules.
The PC/104 PCI VIO selector (XP13) is located on the top side of the module and allows to set the
voltage supplied to PCI interface I/O buffers. It is a standard 3-pin header. Figure below presents
explanation of its jumper positions.
Figure 2-2:
PC/104 PCI VIO Selector XP13 Positions
1
2 3
The jumper should be removed only if the module is powered via
XS4 connector from a PC/104 PCI power supply module; the
voltage is set on the power supply module.
In case the processor module receives power not from PC/104 PCI
power supply module, the jumper must be installed in one of the
two positions, described below.
1
2 3
Contacts 1-2 closed, +5 V power is supplied to PCI interface
I/O buffers
1
2 3
Contacts 2-3 closed, +3.3 V is supplied.
StackPC Interface
StackPC connector allows to connect to CPC805 expansion modules (four x1 PCI-E, six USB, two
SATA, two GEthernet, SMBUS, SPI, LPC, two RS-232 interfaces).
Figure 2-3:
StackPC Connector (XP11)