[MPC5644A] Please, check my Flash BIU settings.

[najongmin]

MCU : MPC5644A

Operating Clock : 150MHz, Oscilator clock : 40MHz

OS : EB's ProOSEK

I set the Flash BIU refer to MPC5644A Datasheet.

My program is no problem in this settings.

But I’m not assure about this configuration.

Of course, Wait state control was using the values recommended by the datasheet.

On the contrary, Line prefetch control and Line buffer configuration can’t be sure whether correctly.

So, Please check that my Flash BIU configurations.

[lukaszadrapa]

Hi,

Yes, the settings are correct.

You can also try different setting of Prefetch Limit if you are facing any performance issues. It is not possible to say which one is better because it depends on application a lot. The best way is to test it.

As per reference manual, there are two possible settings (except disabling of prefetching/buffering):

01: The referenced line is prefetched on a buffer miss, that is, prefetch on miss.

1x: The referenced line is prefetched on a buffer miss, or the next sequential line is prefetched on a

buffer hit (if not already present), that is, prefetch on miss or hit.

Regards,

Lukas