GNSS RF IP is designed to support GPS L1, Beidou B1, Galileo E1, and GLONASS G1 modes. L2, L5, B2, and B3 bands are also supported in specific configurations. This RF receiver provides a digital interface for RX ADC output to digital baseband. Through a slave Serial Peripheral Interface (SPI), baseband can easily access the radio registers for control. The number of parallel receive channel is configurable.