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The CATU can generate two types of error, VA error and AXI error.
Both of these errors are visible in the STATUS register as STATUS.ADRERR and STATUS.AXIERR. A VA error also results in an addrerr interrupt assertion IRQEN.IRQEN is set.
When an error is discovered, either by the processor receiving an interrupt or a read of the STATUS register showing an error, follow the steps in 4 Reprogramming the CATU.