The feature-rich Si4734/35 receiver IC include advanced seek algorithms, soft mute, auto-calibrated digital tuning and FM stereo processing. In addition, the Si4734/35 ICs provide analog or digital audio output and a programmable reference clock. The device supports I2C-compatible 2-wire control interface, SPI and a Si4700/01 backwards-compatible 3-wire control interface.
The Si4734/35 ICs use digital processing to achieve high fidelity, optimal performance and design flexibility. The ICs provide excellent pilot rejection, selectivity and unmatched audio performance and offer both the manufacturer and the end-user extensive programmability and flexibility in the listening experience.
The Si4735 incorporates a digital processor for the European Radio Data System (RDS) and the North American Radio Broadcast Data System (RBDS) including all required symbol decoding, block synchronization, error detection and error correction functions. Using RDS, the Si4735 enables broadcast data such as station identification and song name to be displayed to the user.