OS81118AFR-D2A-020400-V11

Controllers Overview

The OS81118 is a MOST150 Intelligent Network Interface Controller (INIC) featuring a USB 2.0 high-speed device port and integrated coaxial transceiver. It provides 150 Mbits/s MOST network bandwidth, supporting both optical (oPHY) and coax physical layers (cPhy). The device includes an on-chip IEEE MAC controller, two configurable streaming ports with up to 512xFs sequential mode, and operates at 1.2 V/1.8 V/3.3 V in a 72-pin QFN package.

Controllers Feature Summary

• Intelligent Network Interface Controller architecture providing complete network interface on a single chip
• Integrated coaxial transceiver supporting dual-simplex and full-duplex communication alongside low-cost LED/POF-based optical physical layer support
• Supports industry standard streaming formats including synchronous audio, isochronous audio/video, and Ethernet packets for TCP/IP applications
• Embedded MOST network management features including network protection mode, watchdog timers, and intelligent muting

Controllers Applications

• In-car mobile and Wi-Fi connectivity systems using 3G/LTE modules
• Head unit designs based on multi-core consumer SoCs
• Rear-seat entertainment systems and peripheral devices
• Advanced Driver Assistance Systems (ADAS) networking

Controllers Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm physical layer capabilities, as the integrated coaxial transceiver is not available on all product variants. Ensure the selected part matches the required temperature range and voltage specifications for the target automotive application environment.

Controllers Selection Notes

Select this component when integrating MOST150 networks with USB 2.0 hosts or multi-core SoCs requiring flexible data routing. Consider the integrated coaxial transceiver for cost-efficient physical layer implementations in ADAS or infotainment systems where optical cabling is impractical.

Controllers Part Context

This INIC belongs to the MOST150 family designed for automotive multimedia networks. It bridges consumer-grade USB interfaces with automotive MOST standards, enabling seamless integration of modern processors into vehicle infotainment architectures while maintaining strict timing and security requirements.

Controllers Replacement Considerations

Consult Microchip documentation for direct pin-to-pin replacements within the OS81118 series. Verify functional equivalence regarding coaxial transceiver availability and software stack compatibility before substituting.