The sysctl DID0 and DID1 registers are the chip part number encoding registers. The parts we have been using indicate non-engineering units (and non-experimental), but the sysctl register indicates that the unit is a non-qualified engineering sample. Major and Minor revision level is 1.1
We have checked all units we have, and each one is the same. SYSCTL_DID0 is 0x18050101 and SYSCTL_DID1 is 0x1003602C. The documentation for the data sheet (Rev E) states the SYSCTL_DID1 is 0x1003602E (see page 225).
Are these parts truly engineering samples?