The Fast Access Controller (FAC) is a specialized solution developed by Intellitech, targeting efficient external flash programming in production environments. It is engineered to hasten on-board Flash memory programming, especially when configured with FPGAs, by utilizing a minimal bitstream through the 1149.1 bus. This IP is purpose-built for microcontroller, DSP, and CPU designers, aligning with the demands for enhanced design-for-test features and stronger programming performances in manufacturing processes.