****      EFB Cmd/Status Reg      ****
****       Error Mask Bits        ****
--------------------------------------
HEADER_BIT_ERR_O       0
TRAILER_BIT_ERR_O      1
FLAGGED_ERROR_O        2
SYNC_ERR_O             3
COND_MODE_HIT_ERR_O    4
L1_ID_ERR_O            5
BC_ID_ERR_O            6
TIMEOUT_ERR_O          7
DATA_TRUNCATED_ERR_O   8
DATA_OVERFLOW_ERR_O    9

****   Dynamic Mask Status Bits   ****
DYNAMIC_MASK_STTS_O   10
DYNAMIC_MASK_STTS_W    2