SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
When operating a pad in certain modes, a Manual IO Timing Mode must be configured to ensure that IO timings are met. The modes requiring Manual IO Timing Modes are described in Manual Functions Mapping tables within the “Timing Requirements and Switching Characteristics” section of the Data Manual. These tables list each pad associated with a specific Manual IO Timing Mode, along with the required A_DELAY and G_DELAY values that should be used to calculate the correct values to be set in the CFG_x_IN, CFG_x_OEN, and CFG_x_OUT registers associated with that pad. For more information regarding these registers, see Section 18.7, IODELAYCONFIG Module Register Manual
To select a Manual IO Timing Mode, the MODESELECT field of each associated pad configuration register must be set to 0b1 and the associated CFG_x_IN, CFG_x_OEN, and CFG_x_OUT registers should be set via the following sequence:
Selection of all Manual IO Timing Modes should be done as part of the IO Delay Recalibration Sequence described in Section 18.4.6.1.8, IO Delay Recalibration.