Other Parts Discussed in Thread: TUSB1044
After today's test, I ask customer direct connect SBU signal to TUSB544 AUX pin ( in orignial question we let AUX and SBU pin floating because QC SOC have SBU MUX by itself ) then DP can work.
But yesterday, David told me that can let AUX pin pull up or pull down. In this morning we use this suggestion, but it can't work.
So, my customer ask me how to explain why need to connect SBU signal to AUX pin and can't let it floating or pull up/down.
Thanks for reply.
BR
Bruce