TUSB1211 can't communication

Kai Hsiao

Guru 12675 points

Other Parts Discussed in Thread: TUSB1211

Dear Sir

When I connect my tablet (TUSB1211) with my notebook ,My notebook could detect my tablet

But if I download data from PC to tablet ,it can't process communication

Have any experience about this issue??

Below is schematic and platform is Intel Baytrail

Thanks

over 10 years ago

0 Gerardo over 10 years ago

TI__Genius 11280 points

Hello Kia,

We are going to review your schematic and reply soon.

In the meantime could you verify that the tablet is enumerated in the Windows Device Manager?

Regards,

Gerardo

0 Gerardo over 10 years ago in reply to Gerardo

TI__Genius 11280 points

Hello Kia,

Two comments about the schematic:

Normally ID is not used to control VBUS. Please bypass Q44

What’s the voltage level of USB_PHY signal? If it is in the range 3.2 – 3.6 volts is ok.

Regards,

Gerardo

0 Kai Hsiao over 10 years ago in reply to Gerardo

Guru 12675 points

Dear Sir

Update !!

Please refer to below vedio link

http://youtu.be/f0pBkZiLDNE

This platform is Baytrail-T ,This issue occur when we install Andriod OS on our tablet

Intel Baytrail-T require to through TUSB1211 USB port to install Andriod OS ,can't use SD card to install the OS

We find the Notebook could detect "Intel Andriod phone" ,but the CS pin fo TUSB1211 will be changed from H to L when we start to install OS (please refer 1:11 in the video link)

Do you have any idea about this issue?

Thanks

0 Kai Hsiao over 10 years ago in reply to Gerardo

Guru 12675 points

Dear Gerardo

Q44 had already bypass

USB_PHY = 3.3V

Thanks

0 Kai Hsiao over 10 years ago in reply to Kai Hsiao

Guru 12675 points

Dear Sir

Have any idea about this issue ?

Or what document I need to provide?

Thanks

0 Mike Perkins over 10 years ago in reply to Kai Hsiao

Intellectual 565 points

Perhaps I'm missing the point here, but the CS pin is an input into the TUSB1211 and so won't its level will be determined by the Baytrail-T platform and the loader/installer?

Am I wide of the mark?

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TUSB1211 can't communication