: Features a built-in 1.2V regulator for the core, allowing the entire chip to run off a single 3.3V supply.
: Single 3.3V power supply with an internal 1.2V regulator for the core. Key Features HP Auto MDI/MDI-X
Please check the again. Look for:
: Uses the RMII (Reduced Media Independent Interface) v1.2, which halves the number of data lines to save space.
: Receives an externally synthesized 50MHz clock directly to the XI pin from an oscillator or a master system clock source. Hardware Layout and Power Sequencing Best Practices ksz80 ob s4lv02 datasheet
Beyond hardware strapping pins (such as setting the primary PHY address via pull-up or pull-down configuration resistors), full customization of the chip requires reading and writing to registers through the and Management Data Clock (MDC) serial bus. Register Address (Hex) Common Register Name Key Functions and Diagnostic Bits 0x00 Basic Control Register
Elena scanned the dense tables of register maps. She was looking for the hardware configuration straps—the physical pins that dictated how the chip behaved at the exact millisecond power was applied. Pin 14 (RXD1/PHYAD1). Page 25: Pin 15 (RXD0/PHYAD0). : Features a built-in 1
Write 1 to initiate a software reset. Self-clearing.