TUSB1310A ULPI does not work!

MASAO YAMAZAKI

Other Parts Discussed in Thread: TUSB1310A

Hello,

I'm trying TUSB1310A to work on USB2.0 mode.

I checked that all strap pins are driven properly and set the ULPI registers, but D+ is not pulled up and ULPI_CLK is stopped.

Do I have to do some other settings?

Best regards,

0 Wes Ray over 14 years ago

Is PCLK running at 250 MHz?

What is the input clock frequency on XI, is is a crystal or digital clock input?

What is PHY_MODE[1:0] set to?

Are you sure that the strap pins are set properly on the rising edge of RESETN? Have you verified on a scope?

0 MASAO YAMAZAKI over 14 years ago in reply to Wes Ray

Hi, Wess,

I chcked the strapping option and PCLK Freq. and PHY mode.

I confirm the ULPI I/F timing and recovered some problems.

Thank you.

Masao

Interface forum