3.2. Hardware Initialization

When the LCB initializes it needs the starting address of the event circular buffer. As discussed in [8] the Director SBC of the PCI crate is responsible for programming the EVENT_BASEn registers of the LCB on behalf of all SBCs in the PCI crate.

The power on reset value of the EVENT_FREEn registers will be 0x0, which is not correct for the circular buffer. The Director SBC will write a "good" starting value into the EVENT_FREEn registers, but that value is TBD.

At this point the hardware is ready to take event data. The LEPI, however, requires more configuration before processing event data.