Hello, i am having a trouble that only one USB Port of TUSB 2036 does not work at all whereas other 2 DP2 DM2 and DP3 DM3 work fine. I have used this USB Hub to connect to a ARM 9 board. I also checked to use the USB Hub's DP0 DM0 by connecting it to PC's USB Port but same problem. It detects 2nd and 3rd port but not the 1st port. Can anyone tell what might be the issue ? I am attaching the schematic. I cant understand why the same WIFI and Mouse work fine on DM3 DP3 but not on DM1 DP1. I checked all connections everything is fine.
NOTE:
1) The Reset net is a RC circuit of 2.2k ohm and 4.7uF.
2) The WFIDM and WFIDP port is the one connected to DP1 DM1 having issue rest of the ports work fine. I did connect the 2 15k ohm resistors to ground both lines but no effect.
3) I am using self-powered USB Hub mode.
4) I am using all 3 ports of USB Hub so i grounded NP3 NPINT1 NPINT0.
5) I didnot connect SN75064 Transient Suppressor IC. I am taking the nets directly.
6) I did try pulling up DP1 with a 1.5k ohm resistor but no effect.
The PC does not enumerate this port at all and shows error that "USB Device malfunctioned" on that DM1 DP1 port. Whereas the other 2 ports are fine. I have to use this DM1 DP1 so please respond soon.
