tusb2046b windows say unknown device

fox1

Other Parts Discussed in Thread: TUSB2046B, TPS2044

Hello,

I created the following circuit. But when I connect the circuit with a Windows 7 system oder Windows XP system, Windows say unknown device. I created the circuit like the self-powered hub, individual port power management in the datasheet Figure 11. What is wrong in the circuit. I ask for help, please.

over 13 years ago

0 fox1 over 13 years ago

Prodigy 50 points

windows say error code 43

This device has been stopped because it has reported problems.

0 fox1 over 13 years ago in reply to fox1

Prodigy 50 points

now the usb hub is detected, but not the usb device (usb flash)

I change the RESET (pin 4) from gnd to a RC circuit. 3,3V to 2,2k to 0,1uF and Reset pin. like here

also I've corrected my mistake. the 3,3V and 1,5k connected to D+ or DP0 and not to the DM0

also I change the resistors on the connectors by DP0, DM0, DP1 and DM1 to 27R

now only has to be the usb flash detected. the voltage on the USB flash (VBUS) is only 0,5V. maybe that's a clue. the led on the usb flash lights on short time.