3.3.12.2 TDF Optimization Enabled (TDF_MODE = 1)

When SMC_MODE.TDF_MODE is set to 1 (TDF optimization enabled), the SMC takes advantage of the setup period of the next access to optimize the number of Wait state cycles to insert.

The following figure shows a read access controlled by NRD, followed by a write access controlled by NWE, on Chip Select 0. Chip Select 0 has been programmed with:

NRD_HOLD = 4; READ_MODE = 1 (NRD controlled)

NWE_SETUP = 3; WRITE_MODE = 1 (NWE controlled)

TDF_CYCLES = 6; TDF_MODE = 1 (optimization enabled).

Figure 3-31. TDF Optimization: No TDF Wait states are inserted if the TDF period is over when the next access begins