Introduction
This document provides an overview of the programming requirements for the Si477x AM/FM receiver with support for an external IBOC HD demodulator. The hardware control interface and software commands are detailed along with several examples of the required steps to configure the device for various modes of operation. Table 1 provides a programming guide cross-reference for each Si477x part released by Silicon Labs to date. This programming guide focuses on the Si477x-A20 release.