The Texas Instruments LM3S9B96-IBZ80-C3T is a 32-bit ARM Cortex-M3 MCU from the Stellaris 9000 series, clocked at 80 MHz.
At 80 MHz, the Cortex-M3 executes a single-cycle multiply and hardware divide, which matters for real-time control loops and protocol parsing. The Ethernet MAC and USB OTG controller can saturate the bus if the DMA engine isn't configured right — the part includes DMA, so offloading packet movement from the core is the right approach for maintaining throughput on both interfaces simultaneously.
Connectivity set for a gateway role
This MCU carries CAN, Ethernet, and USB OTG on the same die — a combination that made it a natural fit for building-automation controllers and industrial protocol gateways. The EBI/EMI interface also allows glueless connection to external SRAM or Flash, useful when the 96 KB of on-chip RAM isn't enough for large packet buffers or data logs.