Figure 14. MXCHIP EMW3080
The main features of the MXCHIP EMW3080 module are:
•
IEEE 802.11n D7.0, OFDM-72.2 Mbps, single-stream width of 20 MHz, and short GI;
• IEEE 802.11g, OFDM 54 Mbps;
• IEEE 802.11b, DSSS 11 Mbps;
• IEEE 802.11i, security–Wi-Fi protected access (WPA)–PSK/TKIP–Wi-Fi protected access 2 (WPA2)–AES/
CCMP/802.1x authentication;
• GPIO, five ADCs (the SPI interface uses the ADC pins);
• Operating band: 2400 MHz ~ 2483.5 MHz (2.4 GHz ISM band)
• RF power: 16 dBm
• Power-saving mode allows the design of low-power applications;
• Lead-free design compliant with RoHS requirements;
• EMI/EMC metal shield to achieve the best RF performance in noisy environments and to accommodate for
lower RF emissions/signature for easier FCC compliance;
• FCC/CE compliance certification.
Table 11. MXCHIP EMW3080 I/O configuration
I/O Configuration
PG2 SPI1_CLK
PG4 SPI1_MOSI
PG3 SPI1_MISO
PH7 SPI_CS
PG15 INT (Flow)
PE7 INT (Notify)
PE12 Chip_En
1.6.2.4 STR485
The STR485 is a low-power differential line transceiver for data transmission standard RS485 applications in
half-duplex mode.
Data and enable signals are compatible with 1.8 V or 3.3 V supplies.
Two speeds are selectable through the SLR pin: fast data rate up to 20 Mbps or slow data rate for extended cable
running to 250 kbps.
The thermal shutdown circuit prevents excessive power dissipation due to bus contention or faults. This circuit
forces the driver outputs into a high impedance state.
The receiver has a fail-safe feature, which guarantees a high output state when the inputs are left open, shorted,
or idle.
UM2965
Functional blocks
UM2965 - Rev 1
page 15/58
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