Visible to Intel only — GUID: wxe1662013874736
Ixiasoft
Visible to Intel only — GUID: wxe1662013874736
Ixiasoft
26.3.2.8.5. Read Modify Write
When ECC feature is enabled, altera_syncram does not support byte enable. To support the “byte enable” feature, read modify write approach is implemented. On-Chip Memory II IP will first read the data from the memory based on the write address. Then, writedata with byte enabled is written to the memory while the other bytes are replaced with the readdata previously. Note that during the read transaction of the read modify write approach, if the ECC status received from altera_syncram is an uncorrectable error, then no data is written into the memory for that beat and the AXI BRESP signal will flag a SLAVE ERROR to indicate that the write transaction is not successful.