A7130 is a half-duplex transceiver with embedded PA and LNA. For TX or RX frequency setting, user just needs to set up LO (Local Oscillator) frequency for two ways radio transmission.To target full range of 2.4GHz ISM band (2400 MHz to 2483.5 MHz), A7130 applies offset concept by LO frequency FLO = FLO_BASE + FOFFSET. Therefore, this device is easy to implement frequency hopping and multi-channels by just ONE register setting, PLL Register I (CHN [7:0]).