6.4.2.2 Performing Fault Injection

The following sequence should be followed to inject Faults.

1. Load the data RAM target address into the ECCFADDR register.

2. Select the first Fault bit determined by ECCFPTRbits.FLT1PTR[5:0]. The data RAM target bit is inverted to create the Fault.

3. If a double Fault is desired, select the second Fault bit determined by ECCFPTRbits.FLT2PTR[5:0], otherwise set ECCFPTR.FLT2PTR[5:0] = 6'h3F.

4. This step applies only to partial read/write operations using PWB register for a single memory location. Perform read/write operations on more than four memory locations other than the target address before proceeding.

5. Perform a read of the data RAM target address.

Note: For the PWB injection to work, its internal FIFO must be flushed. This ensures that data are read directly from memory rather than from the RAM buffer.