20.11.1 Principle of Operation

The DSU provides a CRC32 or MBIST memory service. The Address, Length and Data registers (ADDR, LENGTH, DATA) must be configured first; then a command can be issued by writing the Control register. When a command is ongoing, other commands are discarded until the current operation is completed. Therefore, the user must wait for the STATUSA.DONE bit to be set prior to issuing another one.