Device Clock Generation

The article discusses techniques for generating clock signals to control external peripherals in SOC (System-on-Chip) designs, drawing from the author's experience building various controllers including NOR flash, HyperRAM, NAND flash, and SDIO/eMMC interfaces. Key challenges include managing variable clock frequencies across different platforms (FPGA vs. ASIC), pausing clocks when needed, and generating offset clocks for DDR (Dual Data Rate) protocols that require data transitions on both clock edges. The author plans to address related topics such as processing return clocks from peripherals in future articles.