Question about UART signals direction and route in i.MX6SoloX

[ko-hey]

Hi all

I have a question about UART module in i.MX6SoloX.
I'm confusing the direction and routing of the UART signals based on whether the UART is operating in DCE mode (UARTn_UFCR[DCEDTE]=0) or DTE mode (UARTn_UFCR[DCEDTE]=1).

So I want to clear it.

Here is a UART signals and direction table that is in general and refer from the Figure 65-2 of IMX6SXRM.

The part highlighted in yellow is different from general and refer from the Figure 65-2 of IMX6SXRM.

I think the Figure 65-2 of IMX6SXRM is wrong.

Am I wrong ?

Also I checked P5199 of IMX6DQRM, Table 90 of IMX6DQCEC and a following thread.

https://community.nxp.com/docs/DOC-97509

All of those UART signals direction and route are different.

Please tell me which direction and route are correct.

Ko-hey

[Yuri]

Hello,

  The UART signals TX_DATA, RX_DATA, CTS, RTS on the 6SoloX are mapped on
the external pins in the same manner as for other i.MX6 parts (D/Q). The Figure 65-2
of IMX6SXRM rev.1  is correct. 

Have a great day,

Yuri

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[ko-hey]

Hi Yuri

So the P5199 of IMX6DQRM Rev3 is correct.

Is my understanding correct ?

Ko-hey

[Yuri]

Hello,

> So the P5199 of IMX6DQRM Rev3 is correct.

Yes - it is fully correct for i.MX6 D/Q, and correct regarding 

TX_DATA, RX_DATA, CTS, RTS on the 6SoloX. 

Regards,

Yuri.

[ko-hey]

Hi Yuri

I've still confused about connection of i.MX6SX.

Please let me confirm once again.

I made a material which is figure that I think the correct.

According to the section 65.4.3 IMX6SXRM (Rev. 1, 6/2016), UART Module Signal's directions are fixed in either mode.

Furthermore according to the Table 65-2 of IMX6SXRM (Rev. 1, 6/2016), the external signals's direction are both input and output.

If the table 65-2's directions are correct, the attached document which I made is correct.

Could you check the attached document and reply whether the connection is correct or not ?

Add info: 

My customer have stopped the development due to this question.

Please answer me as soon as possible.

Ko-hey

[ko-hey]

Could you follow this thread and reply the question ?

Ko-hey

[Yuri]

Hello,

  I will send the answer directly via e-mail.

Regards,

Yuri.