topic Re: IMX6Q EIM （16bit :D0~D15） problem in i.MX Processors

IMX6Q EIM （16bit :D0~D15） problem

jianminli — Fri, 18 Aug 2017 11:56:07 GMT

We're using i.MX6Q with EIM interfacing to an FPGA, using synch 16 bit none multiplexed mode with burst mode.

we use EIM_D0~EIM_D15 as DATA bus;

address and data bus work well except EIM_D6 and EIM_D7: when it pull down , it is hard to be pull up.

so if i want it to give a 101 level ,but it actually give me a level of 100.

why? is there some hardware problem?

Re: IMX6Q EIM （16bit :D0~D15） problem

igorpadykov — Sun, 20 Aug 2017 23:24:56 GMT

Hi jianmin

yes this may be hardware problem, please try to set these pads as

gpios and toggle them. May be useful to test board with jtag and baremetal test SDK:

Github SDK
https://github.com/backenklee/swp-report/tree/master/iMX6_Platform_SDK

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: IMX6Q EIM （16bit :D0~D15） problem

jianminli — Wed, 06 Sep 2017 08:41:52 GMT

I have set these pads as gpios and toggle them,the first picture is the performence of EIM_D6 or EIM_D7,

The second picture is the performence of other EIM DATA pins .

I checked the hardware connetion,and there is nothing wrong.

is there any possible that the chip(mx6q) itself has something bug with EIM_D6 and EIM_D7? I tried some other imx6q chips,and got the same result. Can u help me ?

normal：

Re: IMX6Q EIM （16bit :D0~D15） problem

igorpadykov — Wed, 06 Sep 2017 10:34:36 GMT

had you tried baremetal sdk example. Please try it, set eim with low frequency,

for example with 20MHz.

Best regards
igor

Re: IMX6Q EIM （16bit :D0~D15） problem

329982628 — Thu, 27 Sep 2018 05:49:06 GMT

您好

想问一下楼主解决这个问题了吗

最近开发遇到了相似的问题~

邮箱号 329982628@qq.com

望回复谢谢

Re: IMX6Q EIM （16bit :D0~D15） problem

jianminli — Tue, 19 Feb 2019 09:26:40 GMT

The configuration of the pin is incorrect.