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i.MX6Q/eye pattern of USB HS1 setup

Question asked by Soichi Yamamoto on Jan 20, 2016
Latest reply on Jan 27, 2016 by Yuri Muhin

Hi,

 

I develop a trial manufacture board of i. MX6 Quad and i. MX6 Dual-Lite.

 

I let you output a signal from the following pin and want to observe eye pattern to evaluate the signal quality on the board of USB I/F.

 ・i.MX6 Dual-Lite USB_H1_DP(E10)

 ・i.MX6 Dual-Lite USB_H1_DN(F10)

 

I refer to follows.

I.MX6 series USB Certification Guides

Patch to make i.MX6DQ USB to support test modes for certification test

 

I set follows.

 

CCM_CCGR6_bit.CG1 = 3;
CCM_ANALOG_PLL_USB2_bit.POWER = 1;
USBC_UH1_USBCMD_bit.RST = 1;
USBC_UH1_USBMODE_bit.CM = 3;
USBC_UH1_PORTSC1_bit.PTC = 4;☆

 

A system is hung up when I set ”USBC_UH1_PORTSC1_bit.PTC”.

 

Is there the necessary setting anything else?

 

Best Regards,

soichi

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