u-blox ODIN-W260 System Integration Manual

u-blox ODIN-W260 System Integration Manual Manual pdf 6 page image

ODIN-W2 series - System Integration ManualUBX-14040040 - R03 Advance Information System descriptionPage 6 of 331.2 ArchitectureFigure 1: Block diagram of ODIN-W2 series1.2.1 RF sectionThe radio frequency (RF) section contains an RF transceiver, RF switches, RF filters, RF diplexer and a hightolerance crystal oscillator. The transceiver has the following five RF ports:• Bluetooth 2.4 GHz in/out, classic Bluetooth and Bluetooth low energy• Wi-Fi 2.4 GHz band main port in/out• Wi-Fi 5 GHz band In• Wi-Fi 5 GHz band out• Wi-Fi 2.4 GHz band MIMO port in/outThe Bluetooth and Wi-Fi 2.4 GHz main ports are switched together to a common RF path, which is filtered witha 2.4 GHz band pass filter. The in and out ports of Wi-Fi 5 GHz are switched together to a common in and outpath. The 2.4 GHz and 5 GHz RF paths are combined together with a 2.4 and 5 GHz diplexer (the diplexer alsohave band pass characteristics) into a dual-band Wi-Fi and Bluetooth dual-mode in and out antenna port (mainantenna port). The switches are controlled by the radio transceiver, which guarantees only one port is active atany given point of time.The Wi-Fi MIMO port is separate from the other ports and connected directly to a coaxial U.FL. connectorthrough a band pass filter. The U.FL. connector should be connected to an external antenna through a coaxialcable. See Approved antennassection for more information about how to select the antennas.The MIMO port/functionality is available only in the ODIN-W260 module.Different antenna options are available depending on the chosen ODIN-W2 series model:• ODIN-W260: A standard coaxial U.FL. connector that must be connected to an external antennathrough a coaxial cable. See Antenna connectors section for more information about the antennaconnectors.• ODIN-W262: An internal dual-band PIFA antenna. See Internal antenna subsection for more informationabout the internal antenna.Three internal DC/DC regulators generate 1.1 V, 1.8 V and 2.7 V to the RF parts.1.2.2 Host processorThe host processor is composed of a high-performance ARM® Cortex™-M4 Microcontroller (MCU). The MCUoperates at a system frequency of up to 168 MHz and has 2 MB of Flash and 256 KB of RAM memory. A 24MHz crystal supplies the host for accurate interface timing. The host enables communication with the ODIN-W2module over both UART and RMII.