SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
The host must program the PROXY_CTL_j (where j = 0h to 3Fh) prior to accessing the PROXY_DATA_j_y (where j = 0h to 3Fh, y = 0h to 7Fh) unless the previous values are to be reused. This sets the channel within the target, the access mode (head, tail, peek), and the element size. These values will be used when writing the full message to the target, or reading a new message from the target. The target address used will be based on the target base address, the programmed channel, the programmed access mode (for the offset within the 4 kB of the target channel), and the element size (for the offset within the 512 Bytes max size message).
, for element size in bytes length.
The proxy will detect an error if these fields are changed while in the middle of a message.