The "ksz80 ob s4lv02 datasheet" does not exist as a single unified document. The correct approach is to recognize that "KSZ80" indicates a Microchip KSZ8081/KSZ8041 Ethernet PHY, while "OB S4LV02" is an OEM-specific tracking mark.
Your definitive resource is the Microchip KSZ8081 Datasheet (DS00004284). Use the electrical and timing specifications from that document, and consult the specific board’s hardware manual for the strapping configuration of "OB S4LV02."
The closest known part is 24LC02 (Microchip) or S-24C02 (ABLIC) – a 2Kbit I²C serial EEPROM.
The “LV” suggests Low Voltage (1.7V–3.6V operation). ksz80 ob s4lv02 datasheet
Could the marking actually be:
24LV02 or 24LC02 with a date/batch code KSZ80 or OB S4?
The host processor communicates with the KSZ8081 via the MDIO/MDC serial interface. This allows the host to read link status, speed, and duplex, or to write configuration changes. The "ksz80 ob s4lv02 datasheet" does not exist
Basic Registers:
The KSZ8081 can be configured for several distinct operational modes: If it’s a marking code (shortened for space
Given the ambiguous part string, treat this as either:
If you physically have the chip:
If it’s a marking code (shortened for space on small packages):
If you have a physical chip with this marking: