SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
When IET is enabled through CPSW_CONTROL_REG[17] IET_ENABLE = 1h and configured, IET allows premptable traffic on selected transmit priorities to be prempted by express traffic on selected express priorities. Received traffic is separated onto express and prempt receive queues. When IET is disabled (IET_ENABLE = 0h), all Ethernet traffic is express traffic and switch operation is as if IET does not exist. Traffic is only intended to be moved to the prempt queue after premption is verified and enabled.