The control path starts at the mcGroup instances. The mapping of SDRAM group and bank addresses to mcGroup instance ensures that transactions to the same full address map to the same mcGroup instance. Because each mcGroup instance processes the transactions it receives in order, read-after-write and write-after-write address hazards are prevented.
Read and write data pass through the MC. If ECC is enabled, a SECDEC code word is generated on writes and checked on reads. For more details on ECC, see the related information. The MC generates the requisite control signals to the mcRead and mcWrite modules telling them the timing of read and write data. The two modules acquire or provide the data as required at the right time.