MPC5566 EVB is in continuous fault and reset mode

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MPC5566 EVB is in continuous fault and reset mode

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harshal_pawar
Contributor III

I have two MPC5566 EVBs. On one board code is uploading (using PE micro USB Multilink & CW 5.9.0) & its working fine but on second board the FAULT & RESET LEDs are continuously glowing.

And while uploading code on second board following error is repeating:

1.Debugger retrying force to background mode.

2. Can not enter background mode.

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lukaszadrapa
NXP TechSupport
NXP TechSupport

Hi,

what were the last steps before this problem? Could you check the reset line by oscilloscope? Is it low all the time after power-on? Are there the same jumper settings on both boards? Have you measured supply voltages?

Regards,

Lukas

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harshal_pawar
Contributor III

The jumper setting on both boards is same & supply voltages are also proper.

The reset line waveform is continuously high (3.9V) after power-on unless RESET switch is pressed.

I have also observed that on working board only LED_SPEED is continuously glowing while on faulty board LED_LINK, LED_SPEED & LED_ACT all are continuously glowing.

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lukaszadrapa
NXP TechSupport
NXP TechSupport

Hi,

can you see 3.9V on reset on both boards? Did you check that by oscilloscope or did you just measured the voltage?

Regards,

Lukas

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