SPRUJ79 November 2024 F29H850TU , F29H859TU-Q1
At the heart of the C29x Flash subsystem are one or more Flash Controllers (FLCn), which interface directly with the Flash banks and charge pump. Each Flash controller performs the following primary functions:
Additionally, there are four Flash Read Interfaces (FRI-n), which provide an interface for various initiators in the device to read from Flash memory. The Flash Read Interfaces provide memory address regions for Flash read, and include buffer and cache mechanisms to maximize read performance. The Flash Bank Access Router (FBAR) connects each Flash read port to the associated Flash bank or bank pair, depending on MODE and SWAP configuration. These modules are explained in detail in the following sections. Accesses from all initiators to the Flash Read Interface or Flash Controller registers are filtered through the SSU access permission logic and HSM usurp controls.