MDGG-16 multi functional VME Logic Module
The MDGG-16 is a single wide 6U VME multi functional FPGA based delay logic and timing module which provides often needed functions as gate generator & pulse generator, logic fan in – fan out, coincidence register and scaler / pre-scaler. The module has 16 LVDS/ECL inputs and 16 ECL outputs on pin headers and 2 NIM inputs as well as 4 NIM outputs (Lemo), which are free configurable in regards to their functionality.
The MDGG-16 is based on a XC3S500E FPGA with 36kB of block RAM. One FPGA configuration file can be stored in the on-board flash memory from which the FPGA can boot at power-on. The flash memory can be reprogrammed via VME for firmware upgrades. The required logic functionality can be programmed in a easy way by the writing configuration data into MDGG-16 registers via VME D32 A24 “write” commands.
MDGG-16 can be readily customized within the constraints set by the hardware resources. It may be considered an 18-input/20-output/7-diagnostic LED universal logical module for which the user can develop his own firmware using the free XILINX WebPack software.
Features
- single wide 6U A24/D32 VME slave module
- Inputs: 16 ECL/LVDS (pin header) + 2 NIM (LEMO connectors)
- Outputs: 16 ECL / optional LVDS (pin header) + 4 NIM (LEMO connectors)
- 8 diagnostic LED’s
- IRQ capable, IRQ level selected by a jumper.
- Firmware upgradable via VME
- Built-in functions (firmware dependent)
- programmable delay / gate / pulse generators, start/stop latches or pre-scalers (8 ns steps)
- gated or latching scalers with 1k x 32 FIFO per channel
- 8 bit coincidence register
- combinatorial gates (2 fold OR of 8 fold AND)
- Flexible configuration and multiplexing of NIM inputs / outputs and logic devices
- Programmable Veto inputs
- VME triggering of logic devices and reset of scalers
- Individually programmable output polarity for all NIM (4) and ECL (16) outputs
Ordering Information
Standard configurations (others possible by request).
| Part Number | Description |
|---|---|
| MDGG-16 | 16 Channel MDGG-16 with 32 pin header connector and LEMO I/O |
Technical Information
| Specifications: | |
|---|---|
| Packaging | single wide 6U VME module |
| Inputs: | 16 channel ECL / LVDS pinheader, 2 NIM (LEMO) |
| Outputs: | 16 channel ECL / LVDS pinheader, 4 NIM (LEMO) |
| LED’s: | 8 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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