SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
The DDR controller and DDR PHY are connected via DDR PHY Interface (DFI) which is used for transferring control information and data between the PHY and the controller. There are DFI programmable parameters which software can interact with through some of the DDR controller (see Section 8.2.5.2), PI (see Section 8.2.5.3) and DDR PHY (see Section 8.2.5.4) registers. For more information about DFI, see http://www.ddr-phy.org/.