TS3A225E, got Apple and HTC handset can't detection issue.
When use Apple and HTC handset, power on customer board IC VDD ready first, insert handset, DET-trigger pin got a rising edge from low to high, this process can access all handset.
Following above process, Apple/HTC handset has been inserted, then run cold boot (windows system reboot) process, Due to VDD and DET-trigger pull high to the same 3.3V, VDD and DET_Trigger will power down then power up together, then system shows handset device can't be find.
Use Nokia handset no this kind of problem.
If DET_Trigger pin always keep high then power on VDD, IC default will set to OMTP mode?
What's the delay time requirement during VDD to DET_Trigger?
Any ideas to fix cold boot can't access Apple and HTC handset problem? Or its not a problem, reinsert handset can solve this corner case, no need to change VDD and DET-trigger sequence or use external RC to delay DET-trigger.
