
Pluto User Manual A4
www.diamondsystems.com
Page
20
4.1.2
PC/104-
Plus
PCI Bus (PC104+)
The Pluto
baseboard’s PC/104-
Plus
PCI expansion bus signals are generated by the ETX CPU module, and are
essentially identical in function and signaling to a norma
l PC motherboard’s 32-bit PCI bus except for the physical
connector, a 120-pin header (PC104+) arranged as four 30-pin rows.
Note:
The Pluto baseboard can 3.3V DC at up to 1A to the PC/104-
Plus
PCI bus.
GND/5.0
V KEY
A1
B1
Reserved
+5V
C1
D1
AD00
VI/O
A2
B2
AD02
AD01
C2
D2
+5V
AD05
A3
B3
GND
AD04
C3
D3
AD03
CMD/BE0
-
A4
B4
AD07
GND
C4
D4
AD06
GND
A5
B5
AD09
AD08
C5
D5
GND
AD11
A6
B6
VI/O
AD10
C6
D6
M66EN
AD14
A7
B7
AD13
GND
C7
D7
AD12
+3.3V
A8
B8
CMD/BE1-
AD15
C8
D8
+3.3V
SERR-
A9
B9
GND
SB0-
C9
D9
PAR
GND
A1
0
B1
0
PERR-
+3.3V
C1
0
D1
0
SDONE
STOP-
A1
1
B1
1
+3.3V
LOCK-
C1
1
D1
1
GND
+3.3V
A1
2
B1
2
TRDY-
GND
C1
2
D1
2
DEVSEL-
FRAME-
A1
3
B1
3
GND
IRDY-
C1
3
D1
3
+3.3V
GND
A1
4
B1
4
AD16
+3.3V
C1
4
D1
4
CMD/BE2-
AD18
A1
5
B1
5
+3.3V
AD17
C1
5
D1
5
GND
AD21
A1
6
B1
6
AD20
GND
C1
6
D1
6
AD19
+3.3V
A1
7
B1
7
AD23
AD22
C1
7
D1
7
+3.3V
IDSEL0
A1
8
B1
8
GND
IDSEL1
C1
8
D1
8
IDSEL2
AD24
A1
9
B1
9
CMD/BE3
VI/O
C1
9
D1
9
IDSEL3
GND
A2
0
B2
0
AD26
AD25
C2
0
D2
0
GND
AD29
A2
1
B2
1
+5V
AD28
C2
1
D2
1
AD27
+5V
A2
2
B2
2
AD30
GND
C2
2
D2
2
AD31
REQ0-
A2
3
B2
3
GND
REQ1-
C2
3
D2
3
VI/O
GND
A2
4
B2
4
REQ2-
+5V
C2
4
D2
4
GNT0-
GNT1-
A2
5
B2
5
VI/O
GNT2-
C2
5
D2
5
GND
+5V
A2
6
B2
6
CLK0
GND
C2
6
D2
6
CLK1
CLK2
A2
7
B2
7
+5V
CLK3
C2
7
D2
7
GND
GND
A2
8
B2
8
INTD-
+5V
C2
8
D2
8
RST-
+12V
A2
9
B2
9
INTA-
INTB-
C2
9
D2
9
INTC-
-12V
A3
0
B3
0
Reserved
Reserv
ed
C3
0
D3
0
GND/3.3V Key