Quantum SBC User Manual Rev A
www.diamondsystems.com
Page 12
6. I/O CONNECTORS
Note:
Pins marked as “key” are cut away or removed.
6.1
External Battery (J1)
Connector J1 is used to connect an optional external battery to replace the on-board backup battery. The on-
board battery provides about 7 years of lifetime at an ambient temperature of 25
⁰
C. For longer lifetime an external
battery of 3.3V 10% may be connected to this connector. Diamond Systems
’ cable part number 6980511
mates
with this connector.
1
2
Ground
Connector type:
Standard .1” single row straight friction lock pin header
Connector:
DF13C-2P-1.25V
6.2
PCI Bus (J2)
The PCI bus connector is a solder-pin non-stack through (short pin) connector installed on the top side.
Expansion modules may be mounted only on the top side of the board due to the presence of the QSeven module
on the bottom side.
Pin
A
B
C
D
1
GND/5.0V KEY
2
Reserved
+5V
AD0
2
VI/O
AD02
AD01
+5V
3
AD05
GND
AD04
AD03
4
C/BE0*
AD07
GND
AD06
5
GND
AD09
AD08
GND
6
AD11
VI/O
AD10
M66EN
7
AD14
AD13
GND
AD12
8
+3.3V
C/BE1*
AD15
+3.3V
9
SERR*
GND
SB0*
PAR
10
GND
PERR*
+3.3V
PME#
11
STOP*
+3.3V
LOCK*
GND
12
+3.3V
TRDY*
GND
DEVSEL#
13
FRAME*
GND
IRDY*
+3.3V
14
GND
AD16
+3.3V
CBE2#
15
AD18
+3.3V
AD17
GND
16
AD21
AD20
GND
AD19
17
+3.3V
AD23
AD22
+3.3V
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