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VME Digital I/O Expansion via PMC
VME
Digital I/O
I/O Expansion via PMC
General Standards Corporation is the leading supplier of PMC Digital I/O boards for VME I/O expansion.
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Key Features:
Cable transceiver options include RS-422, RS-485, LVDS, PECL, and TTL;
High speed (up to 400M bytes/sec);
Flexible cable interface (32-bit bus, 7 hand-shake/status, and clock);
Large FPGAs for interface flexibility;
Large FIFOs.
Free Drivers & Loaner Boards.
Up to six PMC cards can be attached to one VME CPU card via a high speed local bus. [Read More]
Numerous software drivers are available for Windows, Labview, Linux, MathWorks, xPC, VxWorks, QNX, and Solaris. Drivers are also available for host boards from Spectrum Signal Processing and Mercury Computer Systems.
[View Digital I/O Selection Table]
Various I/O cables are available:
[View a list of I/O cables, part numbers, and price]
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Free Drivers & Loaner Boards.
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New: Conduction Cooled PMC (CCPMC)
[More New Products]
Coming Soon: XMC and PC/104-Express
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Other functions available include Serial I/O and high speed Analog I/O.
Form factors supported include PMC, CCPMC, XMC, PCI, PCI-X, PCI-Express, cPCI, cPCI-X, VME, PC/104-Plus, and PC/104-Express.
To view our large variety of PMC adapters Click Here.
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High Speed Expansion on VME with PMC
Numerous CPU boards on VME provide PMC slots for I/O expansion.
One CPU board can utilize up to six PMC cards via the PMCspan product.
This allows one CPU board to have high speed access to: 1) Up to 384
analog input channels; or 2) Up to 96 analog output channels; or 3) Up to 24
high speed bidirectional serial I/O channels; or 4) Up to six high speed 32-bit
bi-directional parallel busses; or 5) Any combination of the above.
Standalone PMC-to-VME adapters can provided for additional I/O expansion.
------- PMCspan ---------
PMCspan allows for Up to Six PMC Cards to attatch to the I/O computer board.
PMCspan works with Emerson Network Power's VME based CPU modules. When
coupled with an MCG processor module, the PMCspan provides up to six PMCs,
more expansion capability than any other VMEbus processor module. Each
PMCspan supports either two single-wide or one double-wide PCI Mezzanine
Card (PMC). By stacking PMCspans, a total of four additional single-wide
PMCs can be added to MCG's compute engines-either today or as future
application growth demands.
The PMCspan is a standard 6U single-slot VMEbus module that links to its
host board via a PCI expansion connector. It supports both front panel and
P2 I/O access for customer supplied PMCs.
For more Info:
http://www.emersonnetworkpowerembeddedcomputing.com/pmcspan_pmc_expansion_bo
ard_for_powerplus_vme_architecture/77
[View Selection Table for Analog I/O boards]
[View Selection Table for Serial I/O boards]
[View Selection Table for Digital I/O boards]
[Back to top for more choices]
Background on VMEbus
---- VME32 ---
VME32 is where everything started in August 1982. The original
specification was sponsored by VITA and eventually standardized as IEEE
1014. It established a framework for 8-, 16- and 32-bit parallel-bus
computer architectures that can implement single and multiprocessor systems.
This bus includes the initial four basic subbuses: (1) data transfer bus,
(2) priority interrupt bus, (3) arbitration bus, and (4) utility bus. Other
architectures with other subbuses are possible within this VME framework.
---- VME64 ---
In 1994, VME64 was formally approved by ANSI as ANSI/VITA 1-1994,
incorporating all the features of VME32 and adding support for 64-bit
transfers.
Parallel Data: 8-, 16-, 32- and 64-bit
Bandwidth: up to 80MB/secThe data transfer bus will support 8-, 16-, 32-,
and 64-bit data transfers in multiplexed and non multiplexed form. The
transfer protocols are asynchronous with varying degrees of handshaking
dependent on the speeds required. The priority interrupt subsystem provides
real-time interrupt services to the system. The allocation of bus mastership
is performed by the arbitration subsystem which allows the implementation of
several prioritization algorithms. The utility bus provides the system with
power plus power-up and power-down synchronization. The mechanical
specifications of boards, backplanes, subracks, and enclosures are based on
IEC 297 and IEEE 1101.1 specifications, also known as the Eurocard form
factor. Additional standards exist that can be used as sub-busses to this
architecture for data transfers transactions, peripheral interfaces and
intra-crate communications among compatible modules.
For more Info on VME see VITA:
http://www.vita.com/vme32.html
For detailed History and Description, see Wikipedia:
http://en.wikipedia.org/wiki/VMEbus
VME Analog, Serial, and Digital I/O
VME analog I/O boards feature up to 64 input channels, up to 50M SPS,
auto-calibration, and large FIFOs.
VME serial I/O boards feature RS-422, RS-232, or RS-485 cable transceivers,
FPGA, and large FIFOs.
VME digital I/O boards feature opto-isolation, LVDS, PECL, RS-422, or RS-485
cable transceivers, FPGA, and large FIFOs.
An extensive line of Data Acquisition I/O boards for VME, along with
[software drivers] for Windows, Linux, VxWorks, NT, etc], are available from
General Standards Corporation.
[View Selection Table for Analog I/O boards]
[View Selection Table for Serial I/O boards]
[View Selection Table for Digital I/O boards]
[Back to top for more choices]
======= VME Keywords ========
Miscellaneous Keywords Used for VME Digital:
"vme digital"
"vme digital board"
"vme digital card"
"vme digital i/o"
"vme digital input"
"vme digital io"
"vme lvds i/o"
"vme pecl i/o"
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