The Si469xx/xxC is a high-performance, multi-standard, multi-channel digital radio coprocessor. Supporting up to four channels, the Si469xx/xxC enables reception, decode, and playback of digital radio broadcasts by demodulating RF signals, decoding encoded audio, and seamlessly linking multiple audio streams to minimize the effects of switching between digital and analog AM/FM streams from multiple antennas. The Si469xx/xxC supports Maximal Ratio Combining (MRC), radio services, and background scan. When combined with Skyworks’ Si479xx Hybrid SDR tuners, system designers benefit from unparalleled scalability and configurability allowing a single PCB design to support all global regions and a full range of performance segments. A customer-programmable MCU, Digital Data Stream Interface (DDSI), Base Radio Manager, two SPI/I2C interfaces for host control, and automatic power-on-reset and self-boot simplify hardware and software design and reduce system cost.