IMX6Q EIM （16bit :D0~D15） problem

[jianminli]

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?

[329982628]

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

[jianminli]

The configuration of the pin is incorrect.

[igorpadykov]

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!
-----------------------------------------------------------------------------------------------------------------------

[jianminli]

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：

[igorpadykov]

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

for example with 20MHz.

Best regards
igor