ZHCSBT2G November 2012 – October 2017 66AK2H06 , 66AK2H12 , 66AK2H14
PRODUCTION DATA.
The DDR3A PLL and DDR3B PLL generate interface clocks for the DDR3A and DDR3B memory controllers. When coming out of power-on reset, DDR3A PLL and DDR3B PLL are programmed to a valid frequency during the boot configuration process before being enabled and used.
DDR3A PLL and DDR3B PLL power is supplied via the DDR3 PLL power-supply pin (AVDDA2). An external EMI filter circuit must be added to all PLL supplies. See Hardware Design Guide for KeyStone II Devices for detailed recommendations.
Figure 11-25 shows a block diagram of the DDR3A PLL and DDR3B PLL.