V110-BD11 Kinetic Systems VXI Memory Module

The DynamicSignals / Kinetic Systems V110 Series VXI Memory Modules are a single-width, register-based, C-size, VXI modules that can be used as a general-purpose, read/write memory on VXIbus or can interface with the family of I/O modules from KineticSystems that uses the Digi-bus™ protocol. Options of the V110 are available which provide a memory-based data source for output modules such as the V285 Arbitrary Waveform Generator or the V387 Discrete I/O modules (with output options installed); data storage for input modules such as the V207 ADC Subsystem with its family of signal conditioning modules; or VXIbus only operation (no Digi-bus interface). The physical path for the Digi-bus communications is the VXI Local Bus on the backplane P2 connector. Data can be read or written over Digi-bus from the V110 at a peak rate of 10 Mbyte/s. The actual average transfer rate may be limited by the associated I/O modules and their clock rate settings.

The memory on the V110 VXIbus memory module is dual-ported when a Digi-bus OUT module option is used, one buffer on the V110 can be written from VXIbus while a second buffer is supplying data over Digi-bus to a V285 Arbitrary Waveform Generator, for example. When that second buffer is empty, the module begins reading data from the first buffer, allowing the second buffer to be filled from VXIbus. It is also dual-ported when a Digi-bus IN module option is used, one buffer on the V110 can be read from VXIbus while a second buffer is receiving data over Digi-bus from a V207 ADC Subsystem, for example. When that second buffer is full, Digi-bus begins writing data to the first buffer, allowing the second buffer to be read from VXIbus. Lastly, the memory module is dual-ported with all options of the V110, it can be used as a general-purpose, read/write memory via VXIbus.

The Digi-bus input option of the V110 can also be used as a transient data recorder memory. When this feature is programmed, the memory is configured as a circular buffer. The logical size of the memory can be programmed to be the entire physical memory or a portion of it. In operation, data from an ADC module begins to be stored in the V110 prior to an "event". The logical memory size can be divided into pre-trigger and post-trigger samples. When an event trigger is received, the memory will continue recording until all post-trigger samples have been received.

The V110 supports both static and dynamic configuration capabilities. It may be accessed using A32/A16, D32/D16 data transfers. A built-in self-test is provided which performs a full memory test at power up.