SPRUII0F May 2019 – June 2024 TMS320F28384D , TMS320F28384D-Q1 , TMS320F28384S , TMS320F28384S-Q1 , TMS320F28386D , TMS320F28386D-Q1 , TMS320F28386S , TMS320F28386S-Q1 , TMS320F28388D , TMS320F28388S
Standard read mode is defined as the read mode in effect when program cache/prefetch-mechanism and data cache are disabled. Standard read mode is also the default read mode after reset. During this mode, each read access to Flash is decoded by the Flash wrapper to fetch the data from the addressed location and the data is returned after the RWAIT+1 number of cycles.
The program cache/prefetch mecahnism and data cache are bypassed in standard read mode; therefore, every access to the Flash/OTP is used by the CPU immediately and every access creates a unique Flash bank access.
Standard read mode is the recommended mode for lower system frequency operation in which RWAIT can be set to zero to provide single cycle access operation.
FMC can operate at higher frequencies using standard read mode at the expense of adding wait states. At higher system frequencies, enable cache and prefetch mechanisms to improve performance. Refer to the data sheet to determine the maximum Flash frequency allowed in standard read mode (that is, the maximum Flash clock frequency with one wait state - FCLKmax).