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Description
PMC-5565PIORC-110000 Reflective Memory PMC Node Card
- High Speed, Easy to Use Fiber-Optic Network (2.12 Gbaud Serially)
- Up to 256 Nodes
- Transparent Data Transfers Between Nodes
- Two Independent DMA Channels
- Error Management and Detection
The GE Fanuc / VMIC VMIPMC-5565 / 5565PIORC Reflective Memory PMC Modules are the PCI
mezzanine card (PMC) members of the GE Fanuc Embedded Systems VMIxxx-5565 family of
Reflective memory (RFM) real-time network products. The other members of the family are VMIVME-5565,
VME-compatible board, and VMIPCI-5565, the PCI-compatible board. All three of these products
are network compatible, and may be integrated into a network in any combination.
This family of products allows computers, workstations, PLCs, and other embedded controllers
with dissimilar operating systems or no operating systems at all to share data in real time.
To the local node, the Reflective Memory board appears as shared memory. Data can be
written to or read from the memory by any level of software, including the application itself. Data
written to the Reflective Memory in one node is transported by the network hardware to all other
nodes, and placed in the same address on those node’s Reflective Memory boards. This transport
of data is accomplished without the involvement of the processors on any node. By this system,
all nodes on the network have a local copy of shared data available for immediate access.
VMIPCI-5565-110000
The classic PCI-5565 contains several components which have been combined into a single FPGA
(Field Programmable Gate Array) in the PCI-5565PIORC. The components that were combined
include a PCI interface device by PLX Technologies, three separate smaller FPGAs, a transmit FIFO, and
a receive FIFO. The PCI-5565PIORC adds greater design flexibility and improved performance over the classic PCI-5565 in at least three areas.
1. The PCI-5565PIORC’s DMA burst and PIO single read access rates have an improvement over the classic PCI-5565.
2. The PCI-5565PIORC’s access bandwidth for the onboard SDRAM memory has doubled, improving the overall throughput.
3. The PCI-5565PIORC is field upgradeable as new features are added.
The classic PCI-5565 contained a group of control registers within the PLX device as well as a separate
group of RFM specific control registers located in an FPGA. Publication No. 500-9367855565-000 Rev. D.0
About This Manual 7 Because the two registers groups physically reside in separate devices, they are accessed
through different regions of memory. The PCI-5565PIORC, on the other hand, contains both groups of registers
within the same FPGA. The two groups could have been combined. However to provide software continuity and
backward compatibility, the two register groups have been maintained separately as in the classic VMIPCI-5565.
Further, the individual bit functions within the registers, where applicable, are still compatible.
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