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MDGG-8 multi functional VME Logic Module

The MDGG-8 is a single wide 6U VME multi functional FPGA based delay logic and timing module which provides often needed functions as gate, delay & pulse generator, logic fan in – fan out, coincidence register and scaler / pre-scaler. The module has 8 inputs and 8 outputs with NIM levels, which are free configurable in regards to their used functionality.

The MDGG-8 is based on a XC3S400 FPGA with 36kB of block RAM. Two FPGA configuration files can be stored in the on-board flash memory  from which the FPGA can boot at power-on (selection by a jumper). The flash memory can be reprogrammed via VME for firmware upgrades.

MDGG-8 can be readily customized within the constraints set by the hardware resources. It may be considered an 9-input/8-output/12-diagnostic LED universal logical module for which the user can develop his own firmware using the free XILINX WebPack software.


Ordering Information

Standard configurations (others possible by request).

Part NumberDescription
MDGG-88 Channel MDGG-8 with LEMO I/O

Technical Information

Packaging single wide 6U VME module
Inputs: 8 channel inputs + 1 common (LEMO 00)
Outputs: 8 channel outputs (LEMO 00)
LED’s: 12 Diagnostic LED’s, driven by signal stretchers
Firmware: Programmed via VME
Interface: VME A24 D32, base address via jumpers.
VME IRQ: Capable of asserting VME IRQ, level selected via jumper
Power: 5V, 1A

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