TUSB2046B: computer can't recognize the USB port

Wiky Liao

Intellectual 1940 points

Part Number: TUSB2046B

Hi Team,

We finish TUSB2046B in board, but we find the computer can't recognize it when connect to computer, could you help to share any comments? thanks.

Best Regards.

Wiky

over 6 years ago

0 Malik Barton57 over 6 years ago

TI__Guru 64326 points

Hi Wiky,

Is there a 1.5K pull-up on DP0? This is necessary for TUSB2046B to be recognized by a USB Host. 15K pull-down is also be used on downstream ports and, optionally, 22pF cap to ground for edge control.

0 Brian Zhou over 6 years ago in reply to Malik Barton57

TI__Guru*** 146535 points

Wiky:

any update?

0 Wiky Liao over 6 years ago in reply to Brian Zhou

TI__Intellectual 1940 points

Hi Brian and Malik,

Thanks for your comments. After adding the pull up resistor it works now. Appreciate your effort.

Best Regards.

Wiky

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TUSB2046B: computer can't recognize the USB port