IMX7-Dual Boundary-scan on DDR pins

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IMX7-Dual Boundary-scan on DDR pins

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ians1
Contributor I

Hello

We have one of your sabre development boards with the IMX7 dual processor populated. We are using it to prove the bsdl model supplied prior to a mutual customers production run.

Some of the IO pins follow the BSDL and can be toggled when the device is in boundary-scan/extest mode.

However none of the DDR pins (Address/data/control) toggle - they sit at 0.5V during test.

Is there any configuration (board or chip) required to turn on the ddr bank so the IMX7's "DDR" address/data and control pins toggle in extest?

(eg, IMX6 did have a register which needed programming to turn the EIM bus from highz drive value).

Thanks

Ian

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Ian

I am afraid ddr testing with bsdl is not supported, some customers tried but

there were no known successful results.

Best regards
igor
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