Other NXP Products中的主题 Re: Problem in using MPC8260 in 'Configuration Master' (multiplocessor mode)

Problem in using MPC8260 in 'Configuration Master' (multiplocessor mode)

h_humble2001 — Sat, 08 Mar 2008 15:26:53 GMT

Hi,

I am using MPC8260 in Configuration Master in 2 boards. At power-up MPC executes from flash but crashes after about (0.5 sec). It is also observed that if the board is powered-up for a few minutes then the MPC works fine. It seemed that when the system is heated a little bit it works fine. I have two identical boards. One of them is working perfectly fine and the other one is not.

Please I need suggestions and possible reasons of this behaviour.

Thanks in advance.

John

Re: Problem in using MPC8260 in 'Configuration Master' (multiplocessor mode)

genuap — Mon, 10 Mar 2008 19:51:24 GMT

Do you know if it fetched the reset word? (Is RSTCFG pulled low? - to be a config master). You could try to pull RSTCONF high temporarilarly to use a 'default' setting to see if it's not getting the config word correctly.

Do you have a scope or analyzer on there to see how many bus accesses went on before it died?

Also, check your pullups on POR, HRESET & SRESET. They should be in the 2k range.