Using the MPC 8360 processor. Our question concerns the DDR Impedance calibration.
- Is it recommended to use the Automatic hardware Calibration, or the manual software calibration algorithm referenced in MPC8360ERM Rev. 3 (section 18.104.22.168)?
- What is the power up value of the DDRCDR register? I was unable to find it in the manuals.
- The manual previously referenced does not indicate if the DDRDSR can be checked when using the Automatic hardware calibration to see if the Automatic Hardware calibration appears to be working. Can it be used, or is there another method to determine what the Automatic Hardware calibration is setting the impedance to?