Quatech 802.11B/G - Manual (Page 14)

Quatech, Inc. Airborne Enterprise Module Databook
14 7/15/2010 100-8080-120
5.3 Serial Peripheral Interface (SPI)
Please refer to section 7.0 for details on this interface.
5.4 Debug/Console Port
A debug/console port is supported by a 2-wire serial interface defined in Table 3.
This port is a bidirectional serial port intended for debug of the unit only, it does
not support data transfer.
It is recommended that a connection to this port be supported via test points or a
two pin header. The default settings for the debug port are 115200, 8, N 1, No
Flow Control.
 CAUTION: Do not use the debug port without contacting Quatech Technical
Support first. Potential damage to the module may occur.
5.5 General Purpose Input/Output (GPIO)
A number of the interface pins support multiple functional definitions. Those
defined as alternately GPIO pins can be selected as such via device firmware.
The GPIO pins are digital I/O capable of supporting up to a 16mA drive current at
3.3VDC.