We use TPS73601DCQ as the supplier of the 1.8V voltage of TTMS320C6748.
When the 1.8V is not conected with C6748, the voltage detected is 1.8V as expected, but the voltage detected will become 2.7V whenever it is conected to C6748.
Although the 1.8V supply is abnormal, C6748 seems to be work properly.