10.2.1.4 MAC Statistics Module

The MAC Statistics module is a register-based, statistics-gathering module. The MAC Statistics module offers 37 separate counters, which can be used either to count or to accumulate conditions (such as dropped frames which occur as packets), that are transmitted or received. The presence of non-zero elements in either of these statistics vectors triggers MAC Statistics module to update its statistics counters.

The counter’s rollover condition is indicated through a carry interrupt output from the MAC Statistics module. Each counters rollover condition can be discreetly masked from causing an interrupt by internal masking registers.

Table 10-104 and Table 10-105 show the mask registers for transmit and receive.