Maxim Integrated 78Q8430 Software Driver - Manual (Page 38)

78Q8430 Software Driver Development Guidelines UG_8430_004
STEP 4: Read RRIR.
A single bit will be set in RRIR for each receive counter that has rolled over. The driver increments by
one each rollover counter that corresponds to a RRIR set bit.
All of the RRIR and TRIR bits are cleared on read. Once the RRIR and TRIR bits clear, the RMON
bit in the HIR will be clear.
38 Rev. 1.0