K64 (MK64FN1M0VLL12) debuger/programmer header connection

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K64 (MK64FN1M0VLL12) debuger/programmer header connection

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fzhang
Contributor II

Planning to use the UMulitlink for debugger probe on my K64 board.

Universal Multilink Development Interface|NXP

Here is the schematics following the K64 Tower board.

Capture.JPG

But on the document below:

http://cache.nxp.com/files/microcontrollers/doc/support_info/USBMLUNIVERSALFX.pdf?fpsp=1&WT_TYPE=Sup... Information&WT_VENDOR=FREESCALE&WT_FILE_FORMAT=pdf&WT_ASSET=Documentation&fileExt=.pdf

The 20-pin connector is showing like:

Capture1.JPG

My question is

pin 9 is ground on the probe definition but on the tower board schematic is left going nowhere. Do I have to ground pin 9? or it doesn't matter.

Thanks.

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Robin_Shen
NXP TechSupport
NXP TechSupport

Hi Fubin,

It doesn't matter. You can left it floating.

PTA4 is default as NMI_b/EZP_CS_b function.

If you don't need EzPort and Non-maskable Interrupt function, an external 4.7 kΩ to 10 kΩ pullup is recommended.

Or you can disable these function by using FOPT[NMI_DIS] bit and FOPT[EZPORT_DIS] bit.

Best Regards,

Robin

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fzhang
Contributor II

Robin,

Thank you for the confirmation. We will get the board made soon after the layout.

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Robin_Shen
NXP TechSupport
NXP TechSupport

Hi Fubin,

It doesn't matter. You can left it floating.

PTA4 is default as NMI_b/EZP_CS_b function.

If you don't need EzPort and Non-maskable Interrupt function, an external 4.7 kΩ to 10 kΩ pullup is recommended.

Or you can disable these function by using FOPT[NMI_DIS] bit and FOPT[EZPORT_DIS] bit.

Best Regards,

Robin

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fzhang
Contributor II

It seems like doesn't matter per reference manual:

Capture2.JPG

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