36.5.3.7.5 Invalidating a Packet

To invalidate a packet, follow the steps below:

1. Write the address value of the header of the packet to invalidate in OTPC_MR.ADDR.
2. Write 0x7167 in the OTPC_CR.KEY field and ‘1’ to OTPC_CR.INVLD.

The end of the invalidation operation is indicated by OTPC_ISR.EOI= ‘1’ and/or OTPC_SR.INVLD=’0’.

If the invalidated packet is the User Hardware Configuration special packet, its old payload remains active until the next reset or the next refresh. The OTPC_UHCxR registers will be updated after the reset or the refresh following the invalidation operation.