OS81110AFR-D1A-010205-VAO

Controllers Overview

The OS81110AFR-D1A-010205-VAO is an Intelligent Network Interface Controller (INIC) designed for MOST150 networks, providing a 150 Mbits/s data transport bandwidth. It operates within a temperature range of -40 °C to +105 °C and supports dual operating voltages of 1.8 V and 3.3 V. The device encapsulates complete network interface functions on a single chip using the familiar INIC architecture, ensuring compatibility with existing INIC25 and INIC50 applications. It features a 48-pin QFN lead-free, RoHS-compliant package and includes dedicated interfaces such as I2C, SPI, four high-speed I2S/SPDIF ports, and two Transport Stream Interfaces.

Controllers Feature Summary

• Seamless migration capability from legacy MOST25/MOST50 systems to MOST150 utilizing the same INIC API.
• Supports new Ethernet channel for transporting legacy Ethernet frames and IEEE MAC addressing without application modification.
• Includes new isochronous channels for flexible transport of non-MOST synchronized streams like SPDIF Audio and MPEG video.
• Provides versatile generic connectivity with no glue logic required for most applications via MediaLB multiplex interface.

Controllers Applications

• Modern automotive infotainment systems requiring high-bandwidth audio and video streaming.
• Multi-room sound systems and home theater setups with active speakers.
• Digital video transmission solutions connecting video source and sink devices.
• Ethernet tunneling implementations over MOST physical layers.

Controllers Procurement Notes

Verify that the specific ordering suffix matches the required tape and reel configuration or engineering sample status. Confirm the voltage and package specifications align with the target system design before finalizing procurement orders.

Controllers Selection Notes

Select this component when migrating existing MOST applications to higher bandwidth requirements while maintaining software compatibility. Ensure the host system supports the required 1.8 V or 3.3 V operating voltages and utilizes the specified 48-pin QFN footprint.

Controllers Part Context

This controller belongs to the SMSC/Microchip INIC family, specifically engineered for the MOST media-oriented systems transport standard. It represents the evolution from MOST25 and MOST50 architectures to support the increased throughput demands of modern multimedia applications in automotive environments.

Controllers Replacement Considerations

Direct functional replacements are limited due to proprietary architecture. Consider INIC25 or INIC50 variants only if downgrading bandwidth is acceptable and software adaptation is planned. Verify pinout and firmware compatibility carefully.

Controllers FAQ

Does the OS81110 require external glue logic?

No glue logic is typically required for most applications, as the chip provides versatile generic application connectivity and encapsulates all necessary network interface functions.

How does the OS81110 handle Ethernet traffic?

It features a new MOST Ethernet channel that allows the transport of legacy Ethernet frames and supports IEEE MAC addressing, enabling TCP/IP stacks to operate without modification.

What is the node-to-node delay characteristic?

The delay is reduced to 162 nanoseconds per timing slave node and 20.8 microseconds across the timing master device, which helps minimize echoes and flutter effects in audio systems.