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66AK2H14: DDR3 controller

Part Number: 66AK2H14

Hi

Some questions about the DDR3A interface, and descriptions from  SPRUHN7C document:

  • Is there a way to change the DDR3CLKOUP output drive and slew rate ?

  • Is the ACIOCR register operational ? how can we use it ? are there constraints about when to change the <31-30> bit values (before leveling? after leveling ? else?

  • same kind of question about ZQnCR0 register :
    • How to use ZDATA feature ?
    • we tried to force the same ZDATA values as the ones automatically retrieved from levelling in ZQnSR0 register , but this makes the core to crush.
    • to which impedance traces are related ZQ0CR0 , ZQ1CR0,ZQ2CR0, and ZQ3CR0 ?

With best regards,

Bruno