ODIN-W2 series - System integration manual
UBX-14040040 - R20 System description Page 17 of 43
C1-Public
1.5.3.2 SPI / SD card
The SPI bus supports both slave and master modes in full-duplex and simplex communication modes.
It can communicate up to 45 Mbits/s. The 3-bit prescaler gives 8 master mode frequencies and the
frame is configurable either up to 8 bits or 16 bits. The hardware CRC generation/verification supports
basic SD Card/MMC modes.
1.5.3.3 I
2
C
The I²C bus interfaces can operate in multimaster and slave modes. They can support the standard
(up to 100 KHz), and fast (up to 400 KHz) modes. It supports the 7/10-bit addressing mode and the
7-bit dual addressing mode (as slave). A hardware CRC generation and verification is embedded.
1.6 Antenna interfaces
☞ The antenna interface is different for each module version in the ODIN-W2 series.
1.6.1 Antenna connectors
The ODIN-W260 module has two RF antenna U.FL. connectors with a characteristic impedance of
50 Ω. The main supports both Bluetooth and dual-band Wi-Fi. See Figure 4.
Figure 4: ODIN-W260 with external antenna connectors
The MIMO antenna connector supports 2x2 MIMO 2.4 GHz single band Wi-Fi. The use of multiple
antennas at both the transmitter and receiver improves communication performance. A MIMO m x n
system consists of m transmit and n receive antennas, where the data to be transmitted is divided
into m independent data streams.
For Bluetooth and Wi-Fi operation, the module has been tested and approved for use with the
antennas listed in the
ODIN-W2 series Data sheet [2]
.
☞ 2x2 MIMO is supported from software version 5.0.1 onwards.
1.6.2 Internal antenna
The ODIN-W262 and ODIN-W263 modules have an internal dual-band PIFA antenna. See “Internal
antenna design” section for antenna design information.
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