Gigabit Ethernet interface Design
The Gigabit ethernet interface was designed to readout DAQMB data by a
PC. The design is so successful that it is also used on DDU and DCC
for local DAQ farm interface, and copied by other group.
The first interface design was implemented in xcv200E fpga
with TI2201 physical driver on DAQMB. The DAQMB can send data directly
to a gigabit NIC inside computer. There are more than a dozen setups
are running at UCLA, UF, Russia, China, Switzerland and France. This
design saved hugh amount of time to develop a PC interface card (the gigabit
NIC is commercially available), and money. It is very reliable, no problem
for a dozen setups to run for more than three years.
The design is simplified by the later introduced RocketIO inside FPGA. Now
the DDU and DCC implemented the Gigabit ethernet interface with virtex-2pro
FPGAs. This interface is used for EMU local data acquisition (a PC farm
with eighteen high-end computer).
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