Publication No. 500-9300875565-000 Rev. C.0
About This Manual 9
Vendor and Device Identification
The PCI Configuration register reserved for the vendor ID has the value of $114A,
which designates Abaco. The PCI Configuration register reserved for the device
ID has the value of $5565, which is Abaco’s board type.
Subsystem Vendor ID and Subsystem ID
The PCI Configuration register reserved for the subsystem vendor ID has the
value of $1556, which designates PLD Applications. The PCI Configuration
register reserved for the subsystem ID has the value of $0080, which is the PLD
Applications PCI-X core identification number.
Comparison of the PCIE-5565RC and the VMIPCI-5565*
The classic VMIPCI-5565* contains several components which have been
combined into a single Field Programmable Gate Array (FPGA) in the
PCIE-5565RC. 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 PCIE-5565RC adds greater design flexibility and improved performance over
the classic VMIPCI-5565 in at least three areas.
1. The PCIE-5565RC’s DMA burst and PIO write access rates have an
improvement over the classic VMIPCI-5565.
2. The PCIE-5565RC’s access bandwidth for the onboard SDRAM memory has
doubled, improving the overall throughput.
3. The PCIE-5565RC is field upgradeable as new features are added.
The classic VMIPCI-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. Because the two registers’ groups physically reside in separate devices,
they are accessed through different regions of memory. The PCIE-5565RC, 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.
The PCIE-5565RC does not include a second DMA engine.
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