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2.14
PCI Express system
The Juno r2 SoC provides a PCIe Gen 2 4-lane root complex and PHY that connects to a PCIe Gen 2
switch on the V2M-Juno r2 motherboard.
This section contains the following subsections:
•
2.14.1 Overview of PCI Express system
•
2.14.2 PCI Express expansion slots
•
•
2.14.1
Overview of PCI Express system
The V2M-Juno r2 motherboard provides a PCIe switch that provides access through four PCIe slots, two
SATA 2.0 ports, and one Gigabit Ethernet port. The Juno r2 SoC implements a PCIe Gen 2 root complex
and PHY.
The following figure shows the V2M-Juno r2 motherboard PCIe system.
Versatile Express
V2M-Juno r2 motherboard
Juno r2 ARM
Development
Platform SoC
PCIe
PCIe Gen 2
switch
Part of PCIe Gigabit
Ethernet and dual-USB 2.0
connector J37
×4
×4
×4
×8
×16
×1
×1
×4
PCI Express
expansion
slots
Slot 0
×4
Slot 1
Slot 2
Slot 3
GbE
controller
Ethernet
SATA 2.0 0
SATA 2.0 1
SATA 2.0
controller
PCIe
root
complex
×1
Gen 1
×1
Gen 1
Figure 2-17 V2M-Juno r2 motherboard PCIe system
Related references
1.3 Location of components on the V2M-Juno r2 motherboard
2.14.2
PCI Express expansion slots
The PCIe Gen 2 switch connects to four PCIe expansion slots on the V2M-Juno r2 motherboard.
The following table shows the four PCIe expansion slots on the V2M-Juno r2 motherboard.
Table 2-6 PCI Express expansion slots
Slot number Connector size-PCIe lanes Used lanes Unused lanes
Slot 0
×4
1
3
Slot 1
×4
1
3
2 Hardware Description
2.14 PCI Express system
ARM 100114_0200_03_en
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