2 minutes penalty time before programming xcore Topic is solved

Technical questions regarding the xTIMEcomposer, xSOFTip Explorer and Programming with XMOS.
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dsteinwe
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Joined: Wed Jun 29, 2016 8:59 am

2 minutes penalty time before programming xcore

Postby dsteinwe » Mon Jan 27, 2020 12:04 pm

Hello,

I have a strange problem on programming my custom build pcb with the xtag3. When I try to program my board immediately after powering up, I get following error message:
xrun: First stage multi-node boot failed, please check XN file and Xmos link connectivity
After waiting about 2 minutes, I can successfully program and debug my board. I am confused about this behaviour.

I have used the XUF216-512-TQ128. The circuits for powering and programming are equal to the "xCORE-200 explorer kit", except for the 3.3V. There I have used an RT6224DHGJ6F. I have verified with an oscilloscope, that the power circuits are even stable during programming. I have to prototypes and both have the same behaviour.

Do you have an idea, how to remove the "penalty time"?
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mon2
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Joined: Thu Jun 10, 2010 11:43 am

Postby mon2 » Mon Jan 27, 2020 12:24 pm

Hi. Review the #RESET line of the CPU and check when does this line return to a logic high for the normal use.

If not the cause, post the relevant parts of your schematic dealing with the power supply, clock and reset and power rail supervisors.
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dsteinwe
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Joined: Wed Jun 29, 2016 8:59 am

Postby dsteinwe » Mon Jan 27, 2020 4:50 pm

Hi mon2,

you have given me the right hint. Power and clock are ok, but not #RESET. It never goes really low. The cause is, that the IC NC7WZ07P6X was soldered 180° rotated. I have fixed it and now everythings works fine. THANKS!

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