Hiding a Packet

For security reasons, it is possible to hide a packet after having read it through the User Interface. Once hidden, any read to the payload of the packet returns ‘0’.

To unhide a packet, a reset is necessary.

Hiding a packet does not make it available through the Key Buses.

To hide a packet, follow the steps below:

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