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.
Standard configurations (others possible by request).
|VM-USB||VM-USB, USB cable, CD-ROM|
|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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