Whenever the module is in active mode, a logic high is asserted on WAKE_OUT (Pin 27). WAKE_OUT
can be used to signal an external processor. When the WSN802G is in sleep mode, WAKE_OUT is set
to logic low.
2.2 Automatic I/O Reporting
The WSN802G sends an I/O report when one of the following events occur:
•
A logic high signal is applied to the WAKE_IN pin
•
The
AutoReport
timer fires (module in either active or sleep mode)
2.3 Data Serial Port
The data serial port on the WSN802G modules supports baud rates from 1.2 to 921.6 kbps. The following
serial port configurations are supported:
•
5, 6, 7 and 8-bit character lengths
•
1 or 2 stop bits
•
Even, odd, mark, space or no parity
The default serial port configuration is 9.6 kbps, 8, N,1. See Sections 4.14 and 7.2 for serial port configu-
ration details. Serial port operation is full-duplex. Data is sent and received on the serial port transparent-
ly, with configuration information sent and received as UDP datagrams. The WSN802G includes an
acknowledgement and retry mechanism to minimize data loss on RF transmissions. However, the UDP/IP
protocol being carried by the RF transmissions does not provide guaranteed end-to-end delivery. The
user must make provisions for detecting and resending data lost on an end-to-end transmission. The
WSN802G data port is supported with optional /HOST_RTS and /HOST_CTS flow control signals.
2.4 Diagnostic Serial Port
The diagnostic serial port on the WSN802G modules supports baud rates from 1.2 to 115.2 kbps. The
default diagnostic port configuration is 9.6 kbps, 8, N,1. Diagnostic port operation is full-duplex, three-
wire, without flow control support. Diagnostic data is sent and received using a simple string protocol.
Contact RFM module technical support for diagnostic port data format information.
2.5 Serial Peripheral Interface (SPI) Port
The WSN802G SPI port provides master mode functionality at data rates configurable up to 11 Mbps. SPI
port operation is full duplex in the sense that a single clock signal simultaneously shifts data into and out
of the SPI port.
©2009-2015 by Murata Electronics N.A., Inc.
HN-210D/X, HN-214 D/X Rev. 2.0 01-16-15
Page 8 of 101
www.murata.com
