AnsweredAssumed Answered

ADUM4160 Works via hub, not when connected directly

Question asked by DerekS on Oct 2, 2013
Latest reply on Oct 3, 2013 by DerekS


   I'm using an ADUM4160 connected to an FTDI FT245RL. When the unit is connected through a hub it works fine, and no issues. However, when connected directly to a PC, windows displays the "fails to enumerate" message.


   I had PIN connected to VDD2. SPD=VDD2, SPU=VBUS.


   I lifted PIN and controlled it externally. Toggling it externally when connected to a hub caused it to enumerate properly as we saw before. Toggling it when the unit is connected to a PC still gave me the "fails to enumerate" message.


How can I solve this issue?