The flickering neon of the "Circuit Breaker" dive bar reflected off Elias’s cracked tablet screen. He wasn’t looking at news or messages; he was staring at a PDF that shouldn't exist: Ksz80 Ob S4lv0.2 Datasheet
To a layman, it was a dry collection of pinout diagrams, thermal resistance tables, and timing characteristics for a specialized microprocessor. But to Elias, a freelance hardware forensicist, it was a roadmap to a ghost. The "S" in the revision stood for
Depending on the specific part number prefix within the KSZ80 family, the device interfaces with the host processor via RMII or MII:
Manages software reset, loopback mode selection, speed selection (10 vs 100 Mbps), auto-negotiation enable, and power-down modes.