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MEM_PLL_RAT CodeWarrior 8:1 ratio is invalid for LS1021A

Question asked by Dainius Zilys on Dec 27, 2016
Latest reply on Jan 22, 2017 by Yiping Wang


I'm testing LS1021A with Tower board. And want to modify RCW.

Original RCW starts with 0608000A, which is exactly as I need (100MHz clk input, 800MHz DDR clk).

The value of MEM_PLL_RAT is 0_1000 8:1, which is pretty good according to the datasheet. But the CodeWarrior says, it's invalid, and does not allow to select.

If I import whole configuration, it says, PLL configuration is invalid, and I have to select "valid" value from the list.

How to understand it? What configuration tool should be used to select values, which are described in the datasheet, and should be valid?


CodeWarrior configuration