i.MX6Q/eye pattern of USB HS1 setup

[soichiyamamoto]

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

[Yuri · Accepted solution]

Hello,

  Have You tried FrankLiuapproach ?

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Simple way to do the High Speed Host Electrical Test(including Eye Diagram) without PID/VID Test Fixture:

Use memtool to set the USB PHY registers Port Status & Control (USBC_n_PORTSC1)directly to output the specified pattern, make sure a HS device is connected to DUT before setting, otherwise system might crash.

memtool 0x2184184 1                           //read the register settings, address of the other USB port is 0x2184384

memtool 0x2184184=0x18441205      // Force to output Test Packet for Eye Diagram Test  

memtool 0x2184184=0x18411205      //Force to output J_STATE

memtool 0x2184184=0x18421205      // Force to output K_STATE

memtool 0x2184184=0x18431205      // Force to output SE0 (host) / NAK (device)

memtool 0x2184384=0x18001305      // Force to output Reset

memtool 0x2184384=0x18001285      //Ho Force to output Suspend

memtool 0x2184384=0x18001245      // Force to output Resume

---

Have a great day,
Yuri

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[soichiyamamoto]

Hi

Thank you.

What is DUT?

Which register is it?

Please ｇive me a little more concrete information.

Best Regards,

soichi

[Yuri]

Hello,

1.

DUT - Device Under Test

2.

To output signal for Eye Diagram Test (from i.MX6) :

$ memtool 0x2184184=0x18441205      // Force to output Test Packet

Regards,

Yuri.