Hi,
I have built a USB HUB that uses TUSB2077A with Self Powered, Ganged Port, 7-port hub.
The problem I face is that, the device gets listed as a Generic USB Hub, but the VID & PID data are null and no device connected to the Down stream port is getting detected. Went throug a fourm & Google for hours, but couldn't find the exact solution. Please help me with this problem. Attached image FYR. Circuit built with reference to the datasheet.
Hello,
Sorry for the delay in response. My residence was completely flooded and Comm networks failed due to rains. So wasn't able to reply immediately. Have e-mailed you the screenshot FYR. Made EXTMEM high but still the same response.
The EXTMEM pin was made high and i got a msg in PC that the hub was configured successfully. But the HUB_CONFIG and PORT_DIS pins goes high for few seconds and then LOW simultaneously the SUSPEND pin goes high. attached a screenshot FYR. A HID Keyboard device is connected to port 5 of TUSB but doesn't get detected in the PC. Using other ready available USB hubs the same device gets detected.
