ODIN-W2 series - System Integration Manual
UBX-14040040 - R03
Advance Information
System description
Page 6 of 33
1.2
Architecture
Figure 1: Block diagram of ODIN-W2 series
1.2.1
RF section
The radio frequency (RF) section contains an RF transceiver, RF switches, RF filters, RF diplexer and a high
tolerance 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/out
The Bluetooth and Wi-Fi 2.4 GHz main ports are switched together to a common RF path, which is filtered with
a 2.4 GHz band pass filter. The in and out ports of Wi-Fi 5 GHz are switched together to a common in and out
path. The 2.4 GHz and 5 GHz RF paths are combined together with a 2.4 and 5 GHz diplexer (the diplexer also
have band pass characteristics) into a dual-band Wi-Fi and Bluetooth dual-mode in and out antenna port (main
antenna port). The switches are controlled by the radio transceiver, which guarantees only one port is active at
any given point of time.
The Wi-Fi MIMO port is separate from the other ports and connected directly to a coaxial U.FL. connector
through a band pass filter. The U.FL. connector should be connected to an external antenna through a coaxial
cable. See Approved antennas
section 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 antenna
through a coaxial cable. See Antenna connectors section for more information about the antenna
connectors.
•
ODIN-W262: An internal dual-band PIFA antenna. See Internal antenna subsection for more information
about 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 processor
The host processor is composed of a high-performance ARM® Cortex™-M4 Microcontroller (MCU). The MCU
operates at a system frequency of up to 168 MHz and has 2 MB of Flash and 256 KB of RAM memory. A 24
MHz crystal supplies the host for accurate interface timing. The host enables communication with the ODIN-W2
module over both UART and RMII.
