QorIQ T4160 DDR MDIC resistor value

[dibing]

For a QorIQ T4160 based design, as per AN3490 document, DDR3 design checklist point 38, MDIC pins need to be connected to GND/DDR power via a 40 ohm resistor, but as per T4160 datasheet the resistor value required is 187 ohm (for rev2). Which is the correct value that is required ?

[ufedor]

MDIC calibration resistors have different values for different series/revisions of processors.

It is required to refer to the specific processor's Data Sheet.

187 ohm (for T4160 Rev.2) is correct.