i.MX ProcessorsのトピックRe: i.MX6DL: USB Transmitter/Reciver Control Register setting in IBIS model

i.MX6DL: USB Transmitter/Reciver Control Register setting in IBIS model

kazuoasano — Wed, 30 Nov 2016 04:15:37 GMT

Hi community,

We are simulating by the following IBIS file.

i.MX 6DualLIte and i.MX 6Solo IBIS File(REV 1.4.)

Finally, We would like to confirm the signal difference by a simulation and our circuit board.

Therefore, I want to know register setting of IBIS model.

In addition information, A reference manual is described as follows.
"66.2.6 Recommended Register Configuration for USB Certification"

See : i.MX 6Solo/6DualLite Applications Processor Reference Manual (REV 2) P.5537

This is different from register setting of default.

See : i.MX 6Solo/6DualLite Applications Processor Reference Manual (REV 2) P.5545

66.3.2 USB PHY Transmitter Control Register (USBPHYx_TXn)

Register field parameter	Recommend for USB Certification	Default value
HW_USBPHY_TX_TXCAL45DP	0x0	0x6
HW_USBPHY_TX_TXCAL45DN	0x0	0x6
HW_USBPHY_TX_D_CAL	0x7	0x7

What kind of a register setting in IBIS model is it?

Re: i.MX6DL: USB Transmitter/Reciver Control Register setting in IBIS model

CarlosCasillas — Wed, 14 Dec 2016 22:08:39 GMT

Hi Kazuo,

We have internally escalated your request, you will receive additional details soon.

Best regards!

/Carlos

Re: i.MX6DL: USB Transmitter/Reciver Control Register setting in IBIS model

kazuoasano — Thu, 15 Dec 2016 01:29:00 GMT

Hi Carlos,

Thank you for response.

Please teach Detail USB register setting.
In addition, If possible, Please teach me the iomux setting on IBIS model in completely all function.

/Kazuo

Re: i.MX6DL: USB Transmitter/Reciver Control Register setting in IBIS model

CarlosCasillas — Wed, 21 Dec 2016 17:10:51 GMT

Hi Kazuo,

According with AE team, configuration options on USB IBIS are not provided. It is preferred to tune the registers during USB compliance test, as simulation can't replace compliance test.

Hope this will be useful for you.
Best regards!
/Carlos
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: i.MX6DL: USB Transmitter/Reciver Control Register setting in IBIS model

kazuoasano — Wed, 21 Dec 2016 23:41:50 GMT

> configuration options on USB IBIS are not provided.
I can't understand why couldn't be provided a configuration options on USB IBIS.

So, There is no help for it...

We don't never think that simulation can't replace compliance test.
Only,I just want to confirm the signal difference by a simulation design of IBIS and our circuit board.

I am extremely disappointed.

thanks,

/Kazuo