SLAU723A October 2017 – October 2018 MSP432E401Y , MSP432E411Y
The only aspect of the transmit path that changes with advanced timestamp is the descriptor, which extends to 32-bytes long.
When you enable the advanced timestamp feature, the structure of the descriptor changes. The advanced timestamp feature is supported only through the enhanced descriptors format. The descriptor is 32-bytes long (eight words) and the snapshot of the timestamp is written in descriptor TDES6 and TDES7.