Quatech 802.11B/G Especificaciones descargar pdf (Pagina 16)

2 – Airborne Wireless LAN Node Module

Page 10 Airborne Wireless LAN Node Module Data Book 100-8004-102G

Quatech, Inc. Confidential

2.4.1 Application Processor

The application processor interfaces to the radio module and is the link between the wireless

LAN and the embedded Host application. A TCP/IP stack with TCP server and client

capabilities, an RTOS kernel, a radio Link Layer interface, and a Host application layer

Command Line Interface all support features required for flexible LAN connectivity.

The application processor contains its own memory, Flash, and RAM, which are used

exclusively to support the Module’s application functionality.

2.4.2 General Purpose Input/Output

A set of General Purpose Input/Output (GPIO) ports is provided for control, sensing, and data

exchange with the Host system or interface. These ports include digital input/output, analog

input, and serial interfaces.

2.4.2.1 Digital Inputs

All digital ports are configurable as digital inputs. The ports use 3.3 V signal levels and are

5.0 V tolerant.

2.4.2.2 Analog Inputs

The analog input ports accept analog signals from 0 - 2.5 V levels. These ports can be

alternatively used as digital inputs and can be set for use as digital outputs.

2.4.2.3 Serial Ports

The High Speed serial port can be used as a serial UART or as an SPI Slave. The serial ports

use 3.3 V signal levels and are 5.0 V tolerant.

2.4.3 Static Random Access Memory

The Module includes up to 128 KB Static Random Access Memory (SRAM) to support its

functions and features. SRAM is built-in and is used exclusively by the application processor.

2.4.4 Flash Memory

The Module includes up to 512 KB Flash memory to support its functions and features. Flash

memory is built-in and used exclusively by the application processor.

2.4.5 IEEE 802.11 Media Access Control

The IEEE 802.11 Media Access Control (MAC) provides for, and manages, all time-critical

wireless media control.

2.4.6 IEEE 802.11 Baseband/RF

The IEEE 802.11 Baseband RF device provides the appropriate baseband signal processing,

as well as the appropriate RF modulation for the wireless connection.

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