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VM-USB VME Controller with USB-2 interface

The VM-USB is a VME master with high speed USB2 interface. Enhanced functionality is given by the programmable internal FPGA logic which provides a VME command sequencer with 4kB stack and 28kB data buffer. Combined with the 4 front panel I/O ports this allows VME operation and data acquisition / buffering without any PC or USB activity.

All VM-USB logic is controlled by the XILINX Spartan 3 family FPGA. Upon power-up the FPGA boots from a flash memory. The configuration flash memory can be reprogrammed via the USB port, allowing convenient updates of the firmware.


Ordering Information

Standard configurations (others possible by request).

Part NumberDescription

Technical Information

Packaging single wide 6U VME module
Interface USB2 / USB1 auto-detecting / ranging, Connector: USB type B
Inputs 2 user inputs, NIM / TTL level jumper selectable, LEMO connectors
multiplexed, firmware dependent functionality 
Outputs 2 multiplexed outputs for VME, USB and DAQ signals/ TTL level jumper selectable, LEMO connectors,  function firmware dependent
Display 4 programmable User LED’s (green, red, green, yellow)
3 USB status LED’s (USB1, USB2, Failure)
VME master modes A16, A24, A32, D8, D16, D24, D32, BLT32, BLT16
System Controller bus arbiter and / or interrupt handler
Firmware Software upgradeable, 4 firmware locations
Selection via 8 position switch (P=program, C=use)
Performance D32 via USB (EASY-VME):   128 kB/s
D32 with data buffering: 9...13MB/s (depending on slave module)
BLT: 10...15MB/s  (depending on slave module)

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