Part Number: TUSB8041
I designed a circuit. Only when TUSB8041 chip's 50 pins were connected with GND could it recognize the USB disk. However, I could not recognize the USB disk when I controlled TUSB8041 with IO of CPU.
See attached schematic diagram(1012_USB.PDF).1012_USB.pdf
The following figure shows the power-on timing of my test, in which yellow is 1.1V and blue is 3.3V
The following figure shows the power-on timing of my test, with TUSB8041 chip 50 pin (GRSTZ) in yellow and 3.3V in blue
The following figure shows the power-on timing of my test. Yellow is 1.1V and blue is TUSB8041 chip 50 pin (GRSTZ).
Please kindly follow up with TI engineer. Thank you
