The transceiver is configured via standard IEEE 802.3 Management Support Registers accessible through the MDIO/MDC interface. Essential Registers
This comprehensive technical analysis serves as a functional datasheet and repair guide for the KSZ80_0B_S4LV0.2 board, detailing its architecture, chipsets, nominal voltages, and troubleshooting methodologies. Architecture & Hardware Layout
To diagnose a malfunctioning KSZ80_0B_S4LV0.2 board safely, engineers should execute the following isolation procedure:
The "Ksz80 Ob S4lv0.2" is an identifying marking on a specific T-Con board, not an off-the-shelf component. It's most likely found inside 40-inch Sony or JVC LCD TVs, dating back to around 2013.
: Retailers like Great Bharat Spares and Harry Electronics provide the best physical specifications and visual identification for replacement.
| Parameter | Min | Typ | Max | Unit | |-----------|-----|-----|-----|------| | Output voltage range (each channel) | 1.8 | 3.3 | 5.0 | V | | Output current (per channel) | – | 0.2 | 0.22 | A | | Dropout voltage @ 200mA | – | 150 | 250 | mV | | Line regulation | – | 0.05 | 0.1 | %/V | | Load regulation | – | 0.1 | 0.5 | % | | PSRR @ 1kHz | 50 | 60 | – | dB |
The "KSZ80" identifier maps directly to the Microchip Technology KSZ8041 Single-Supply Fast Ethernet Transceiver . On connected panel assemblies, this IC handles system-level telemetry and synchronous commands. Specification 10BASE-T / 100BASE-TX Fast Ethernet Supply Voltage 3.3V Nominal (3.135V to 3.465V Tolerance Range) Interface Options Media Independent Interface (MII) & Reduced MII (RMII) Package Style 32-Pin Lead-Free QFN / MLF Special Mechanics HP Auto MDI/MDI-X for automatic cable crossover correction