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MM-6495DT
8GB Dual
RACE++ VME64 Memory Buffer with simultaneous
access to multiple ports |
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Conduction Cooled for Extended Operating
Temperatures |
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Capacity: 128MB, 256MB, 512MB, 1GB,
2GB, 4GB, 8GB |
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Dual RACE++ on P2 |
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Four Independent RACE Memory Nodes |
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Simultaneous Access to Multiple Ports |
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Description |
The MM-6495DT is an 8GB SDRAM VME memory buffer
with six RACE++ ports and a VME64 port for use
in array processing applications with intensive
data streaming requirements.
The card can be placed at the front or rear end
of a real time DSP system to buffer incoming and
outgoing data. Individual compute nodes can then
receive, process and transfer streaming data at
will, which can greatly reduce total compute
time for the DSP’s and arbitration and overhead
for the host, improving overall system
performance.
The MM-6495DT has two RACE++ ports located on P2
and a VME64 port on P1. The card also has four
RACE++ ports on the face of the board. Each of
these four ports has an individual memory bank
with up to 2GB of SDRAM. Each memory bank can be
accessed simultaneously, but only through its
dedicated RACE++ port.
This architecture provides that data from the
two independent RACE++ ports on P2 and data from
the VME64 port on P1 can be directly transmitted
or received from any one of four "non-busy"
memory banks to achieve an aggregate transfer
rate of up to 612MB/s.
The card is offered in a commercial version -the
MM-6495D, a semi-ruggedized version – the
MM-6495DR (Mercury Level 1), and a rugged
extended temperature version - the MM-6495DT
(Mercury Level 2) for harsh environments.
Reliability is ensured by burn-in and running
memory diagnostics that check operations while
temperature-cycling the boards.
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MM-6495D
Specifications |
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Capacity : 2GB, 4G, 8GB |
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Data Transfer Rate : VME: 40 MB/s,
VME64: 80 MB/s, RACE++: 266 MB/s |
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Address : VMEbus: 8, 16, 32, 64 bits
(UAT) multiplexed
RACEway: 32 bits multiplexed |
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Data In/Data Out : Block Transfer
(BLT) of 256 bytes (MBLT) 2 KB, and RACEway 2KB |
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Sequential Access : Block Transfer
(BLT) of 256 bytes (MBLT) 2 KB, and RACEway 2KB |
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CSR Selection : CSR Selection CSR
selection is jumper selectable on any 256 byte boundary in
the VME A16 address space. Module selection is software
selectable on 1 MB boundaries (max 256 MB)* |
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Interface : Compatible with VMEbus
ANSI/VITA 1-1994, RACE++ as defined by Mercury |
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Memory Selection : Computer's CSR is
jumper selectable on any 256 byte boundary in VME A16
Address space. The CSR controls the VME "window" onto the
RACE fabric. The "window" is software selectable from one
(1) to 256MB.* |
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Relative Humidity : Up to 95% without
condensation |
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Warranty : One year parts and service
warranty |
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Power Requirements : 5.0 V @ 1.4 amps
max, 3.3V @ 2.2 amp max |
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Operating Temperature :
D version: 0°C to +60° C
DR version: -25°C to +60° C
DT version: -45°C to +71° C |
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Storage Temperature :
D version: -40°C to +85° C
DR version: -40°C to +85° C
DT version: -40°C to +85° C |
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Shock :
D version: N/A
DR version: 20Gs
DT version: 20Gs |
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Vibration :
D version: 2Gs
DR version: 12Gs
DT version: 12Gs |
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Other :
DR version: Conformal coating
DT version: Conformal coating |
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Ordering
Information
Part Number
MM-6495D/XXX
MM-6495DR/XXX
MM-6495DT/XXX
Memory Capacity
XXX= 512MB, 1GB, 2GB, 4G, and 8GB |
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