The reference KSZ80-0B-S4LV02 corresponds to a TV Scaler PCB Board
Ethernet PHY usage (if relevant)
The prefix is unmistakably associated with Microchip Technology (formerly Micrel Inc.). Microchip’s KSZ series is world-famous for Ethernet PHY (Physical Layer Transceivers) and integrated Ethernet switches.
The core architecture across standard variants like the Microchip KSZ8081 and Microchip KSZ8091 features highly integrated blocks designed to reduce Bill of Materials (BOM) cost and maximize board-level performance: ksz80 ob s4lv02 datasheet
: Supports 10 Mbps and 100 Mbps Ethernet over CAT-5 unshielded twisted pair (UTP) cable. Power Supply
If you are searching for this board's datasheet to repair a faulty television, look for these common failure points:
If using a 50 MHz oscillator for RMII, isolate the clock trace from noisy power planes or switching digital signals. Analog Front End (AFE) and Magnetics The reference KSZ80-0B-S4LV02 corresponds to a TV Scaler
Note: For precise electrical characteristics (voltage thresholds, timing diagrams, and thermal limits), always refer to the official Microchip KSZ8081 datasheet.
High-speed serial lines carrying RGB data bits, horizontal sync ( Hsynccap H sub s y n c end-sub ), vertical sync ( Vsynccap V sub s y n c end-sub ), and data enable (DE) flags. Common Failure Modes & Diagnostics
The text printed on the chip package—specifically lines like "KSZ80" followed by internal tracking, step, or package codes like "OB S4LV02"—typically points directly to the or KSZ8001 family of Ethernet PHYs. Power Supply If you are searching for this
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.
: 24LC02 or M24C02 – check those datasheets if you see an 8-pin SOIC or TSSOP marking code S4LV02 .
voltage rails, preventing the transistors from switching states quickly enough. Voltage Reference Checklist