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Discussion - Hardware / Re: FT2232H remains in suspend mode & not able to get detected in Windows/Linux
« on: September 24, 2021, 02:29:26 pm »
Thanks for instant reply
FT2232 is entirely self-powered so in schematic if you see VBUS connection on pin 59 is from internally generated 5V regulatory & with same supply we are generating 3.3V, so I think there should not be any issue with Power sequence because all three VCC,VCCIO & RESET are generated at same time.
Also we have a continuous supply of 3.3V on PWRSAV pin 59 & hence I don't think chip is in power down mode. But still FT2232H is not able to enuemerate the USB port. I saw that out 50-60 times I got one time Enuemeration of FTDI chip during that time I measured Clock which was showing 12Mhz & also measured the Suspend pin was showing at Normal Operation. After that I had never got USB enumeration
FT2232 is entirely self-powered so in schematic if you see VBUS connection on pin 59 is from internally generated 5V regulatory & with same supply we are generating 3.3V, so I think there should not be any issue with Power sequence because all three VCC,VCCIO & RESET are generated at same time.
Also we have a continuous supply of 3.3V on PWRSAV pin 59 & hence I don't think chip is in power down mode. But still FT2232H is not able to enuemerate the USB port. I saw that out 50-60 times I got one time Enuemeration of FTDI chip during that time I measured Clock which was showing 12Mhz & also measured the Suspend pin was showing at Normal Operation. After that I had never got USB enumeration