Dear all,
we are producing a USB interface based on TUSB2036, and in some case we meet trouble with the detection in the device manager. The issue is reproducible with some kind of Window 7 PC and identified interface.
An interface which always failed to be detected with KIND_PC_1 could always be detected with KIND_PC_2.
After several tests, we arrived to the conclusion that the component TUSB2036 is a major actor in the issue (soldering of a new TUSB2036 on a 'defective' interface solves the issue, and the soldering of the 'defective' TUSB2036 on a good interface leads to a failure).
In case of failure the analysis with WireShark highlights a difference during the step Port_POWER with a value put at false for the PORT_POWER instead of true, and then there is no step C_PORT_CONNECTION.
Could you tell me under which condition the PORT_POWER is set to true ?
thank you in advance for your help.