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Uboot SDRAM output drive strength for IMX6D

Question asked by Tom Saluzzo on Jun 30, 2014
Latest reply on Jul 1, 2014 by igorpadykov

Using the IMX6D. Why does Uboot 2009.08 set the output drive strength for DDR3 SDRAM interface signals to 40 ohms? The Micron MT4J128M16HA-15E DDR3 SDRAM datasheet (page 134) states that 34 ohms is the primary output driver impedance setting for DDR3 SDRAM devices.