We have a design with the processor MPC8572E and have some problems with the low temperature tests(-40 celsius).
While digging the documents(errata mainly) we found that in the bring up guide(AN3647, Rev2) in section 1.7 table 1, we cannot see the our chip's device marking.
We two different chips that have the following device markings:
04M20X and 44M20X
Do you have a new version of this bring up guide or which revision of the MPC8572E have these device markings ?
Thanks in advance
In the chip errata(MPC8572ECE Rev.N, 06/12) at page 39 it says:
A-004508: DDR controller may not function across the full industrial temperature range
Decription: When the DDR controller is initialized below 0 C and operated beyond am ambient tempature of 60 C, the DDR controller may not function properly.
Impact: Data corruption may be observed during reads from DRAM.
Workaround: When the DDR controller operates across the full supported industrial temperature range then software should set bit 22 at the CCSR register offset 0x0_2F08 before the DDR controller is enabled.
Fix Plan: No plans to fix.
This errata seems a way to fix the issue however in the family reference manual there is not such a register with the given offset. Anybody have an idea ?