MM-6496D Curtiss-Wright VME Module

The MM-6496 / MM-6496D is a high-speed, nine port, single slot VME memory buffer that provides up to 2 GB of DRAM for FPDP, VME, and RACEway systems. Data from two independent FPDP ports and two independent RACEway ports can be directly transmitted or received from any of four "non-busy" RACEway ports at 160MB/s with a combined data rate of 640MB/s.

In addition to having two FPDP ports and a VME port, the card as two RACEway ports on P2 and four RACEway ports on the face of the board. Each of these four ports has an individual memory bank with up to 512MB of DRAM. Each memory bank can be accessed simultaneously, but only through its dedicated RACEway port.

The MM-6496 / MM-6496D has a direct FPDP to RACEway interface, 160MB/s to 160MB/s, with a full chain DMA. Because the interface is built into an FPGA there is no hardware inteegration required to configure the FPDP/RACEway connection. Loading a simple driver is the only software installation required to achirve the fastest possible FPDP to RACEway solution.

The two bi-directional FPDP ports can be configured as either two input ports, two output ports, or one input and one output port. Data can be transmitted or received from each FPDP port simultaneously and the FPDP ports conform to FPDP/TM (Transmit Master), FPDP/RM (Receive Master), FPDP/R (Receive) through jumper selection.

The FPDP ports are controlled by a full chain DMA in the RACEway interface and can be initialized by a host processor on either the VME bus or over the RACEway.

Users who desire access through FPDP and VME but do not require RACEway can still access each of the four memory banks through their dedicated RACEway ports without utilizing MCOS.