PLL change
"qty154" <[email protected]>
| Newsgroups | gmane.comp.hardware.motorola.microcontrollers |
|---|---|
| Message-ID | <[email protected]> |
Hello!
I want to achieve a board reset on my Wuerz MPC555 board that is
initiated from software. I have one option, that is the watchdog. I
simply don't update the key register and the watchdog, when expired,
causes a hard reset. However, watchdog is not always enabled.
Second trial is to use the clock. I lock the MF, CSRC, LPM fields, and
I try to change the MF. According to the manual it should cause a hard
reset (because of the lock). However, nothing such actually happens.
Before the changes, PLPRCR and SCCR is the following:
PLPRCR: 0X00915080 SCCR: 0XAD20C040
After the changes (change MF and set LOLRE) the registers look like
this:
PLPRCR: 0X006150C0 SCCR: 0XAD20C040
Why doesn't reset the MPC555?
How can I achieve reset?
Regards
Attila
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