CQ7-A30
CQ7-A30 - Rev. First Edition: 1.0 - Last Edition: 2.0 - Author: S.B. - Reviewed by G.G. Copyright © 2016 SECO S.r.l.
48
Not Connected
N.C.
B79
A79
GND
Power Ground
Power Ground
GND
B80
A80
N.C.
Not connected
Hot Plug presence detect (needed to enable clock)
PRSNT#2
B81
A81
N.C.
Not connected
Not Connected
RSVD
B82
A82
GND
Power Ground
The single PCI-express lanes that come out from Qseven
®
card edge connector can be alternatively routed to three (3) single PCI-e x1 lanes and one miniPCI-e
Slot. The switching between the single PCI-e x 16 slot and the different connectors is made using jumper JP1, which is a two-way P 2.54mm jumper.
According to the table above reported, when JP1 is not inserted, then three PCI-e x1 slots are singularly enabled.
PCI-e x1 Slot #1 - CN15
Description
Pin name
Pin nr.
Pin nr. Pin name
Description
+12V Power Rail
+12V_S
B1
A1
GND
Hot Plug presence detect (tied to GND)
+12V Power Rail
+12V_S
B2
A2
+12V_S
+12V Power Rail
+12V Power Rail
+12V_S
B3
A3
+12V_S
+12V Power Rail
Power Ground
GND
B4
A4
GND
Power Ground
SM Bus Clock line
SMB_CLK
B5
A5
N.C.
Not connected
SM Bus Data line
SMB_DAT
B6
A6
N.C.
Not connected
Power Ground
GND
B7
A7
N.C.
Not connected
+3.3V Power Rail
+3.3V_S
B8
A8
N.C.
Not connected
Not connected
N.C.
B9
A9
+3.3V_S
+3.3V Power Rail
JP1 position
PCI-e lanes routing:
Lane #0
Lane #1
Lane #2
Lane #3
Not inserted
miniPCI-e slot CN18
PCI-e x1 slot CN15
PCI-e x1 slot CN16
PCI-e x1 slot CN17
Inserted
PCI-e x 16 slot CN14
Please be aware that PCI-e management on CQ7-A30 carrier board requires that the add-in card placed on this slot manages the Presence Detect
pins (B31/B17 and A1). More exactly, according to the PCI Express Card Electromechanical Specification v3.0, it is required that these pins are tied
together on the ADD-in Card (at least, it is needed that pin A1 is connected with pin B17 or pin B31).
In case that these pins are not tied together on the add-in card, then the carrier board will not acknowledge the presence of the card in the slot, and
will not enable the reference clock (and the add-in card will not work).
