The control and monitor interface of the local trigger board for the daya bay neutrino experiment

We have designed a local trigger board (LTB) for the Daya Bay Neutrino Experiment. To control and monitor the LTB, a VME bus based interface is implemented on the LTB. The control and status registers employed by the LTB can be accessed by this interface. This interface can also be used to read out the LTB data and update the LTB FPGA firmware. This interface has been tested and proved to be useful and functional.