BitFlow Cyton-CXP, Hardware Reference Manual

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General Description and Architecture General Description
Version A.0 BitFlow, Inc. CYT-1-5
1.3 General Description
The Cyton-CXP is a x8 PCI Express Gen 2 board. It can work in any PCI Express slot
that it can fit it. Usually this means an x8 or x16 slot. However, some mother boards
have x4 slots with x8 connectors. The Cyton-CXP will work in these slots, although
performance my be somewhat reduced. The Cyton-CXP is a Gen 2 PCIe device, but it
will work in Gen 1 slots, though DMA performance will be degraded. DMA perfor-
mance will be the same for both Gen 2 and Gen 3 slots.
The Cyton-CXP is extremely flexible. Each VFG can acquire from any of the CXP links
on the board (although certain restriction usually apply). In addition, each VFG can
acquire from one or more CXP links. This flexibility means that, for example, the
Cyton-CXP can be used as two VFGs, each acquiring from a dual link CXP camera, or
one VFG acquiring from a quad link CXP camera (in this case, the other VFGs would
not be used).
Figure 1-2 shows the block diagram of a Cyton-CXP VFG when it used with a single
link camera.
Figure 1-2 Cyton-CXP Single Link Configuration
Data
I/O I/O
PCIe
Control
Interface
Power
CXP
Phys i cal
Layer
Acqu i s i on
Eng i ne
De-packet i zer
PCI Express Bus
I/O
Connector
Packet i zer
Buffer
Manager
I/O
System
Camera
Commun i cat i ons
Control
CXP BNC
Connector