A.9
PCI Express expansion slots
The V2M-Juno r2 motherboard provides several PCIe slots that connect to the on-board switch.
This section contains the following subsections:
•
A.9.1 PCI Express ×4 connectors, one-lane slot 0 and slot 1
•
A.9.2 PCI Express ×8 connector, four-lane slot 2
•
A.9.3 PCI Express ×16 connector, four-lane slot 3
A.9.1
PCI Express ×4 connectors, one-lane slot 0 and slot 1
The V2M-Juno r2 motherboard provides two PCIe ×4 connectors that each provide one lane. The board
uses one lane on each connector and does not use the other six lanes.
Note
The PCIe I/O voltage at the connectors is 3.3V.
The following figure shows the PCIe ×4 connectors, one-lane slots 0 and 1, connectors J10 and J11.
Pin B1
Pin B32
Pin A32
Pin A1
Figure A-9 PCIe ×4 connector, one-lane slots 0 and 1, connectors J10 and J11
The following table shows the pin mapping for the one-lane PCI ×4 connector, one-lane slot 0, that is,
connector J11.
Table A-5 PCIe one-lane slot 0, connector J11, signal list
Pin Signal
Pin Signal
B1
12V
A1
GND
B2
12V
A2
12V
B3
12V
A3
12V
B4
GND
A4
GND
B5
No connection
A5
No connection
B6
No connection
A6
PCIE_LOOP4
B7
GND
A7
PCIE_LOOP4
B8
3V3
A8
No connection
B9
No connection
A9
3V3
B10
3V3
A10
3V3
B11
PCIE_nWAKE0
A11
PCIE_nPERST5
B12 No connection
A12
GND
B13
GND
A13
PCIE_CLKP8
B14
PCIE_PETP2
A14
PCIE_CLKN8
B15
PCIE_PETN2
A15
GND
B16
GND
A16
PCIE_PERP2
A Signal Descriptions
A.9 PCI Express expansion slots
ARM 100114_0200_03_en
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