The status of the FIFO, the mode of operation and the running status of the AST can all be read from the statusregister STATUS_REG. The layout of the bits of the statusword is listed in table 2.
Socalled 'unlatched' values contain actual values, 'latched' values signify that the event it represents has occurred at least once since the last time the statusregister was read; latched values are reset to zero when the statusregister is read.
Table 2: Definition of the AST statusregister bits.