Quatech 802.11B/G SPI Commands, Tx Message Header, Rx Message Header, SPI Command Description

Page 24

Quatech, Inc.

Airborne Enterprise Module Databook

 

 

the Airborne Device Server module by the host at the same time the Rx message header is sent to the host from the Airborne Device Server.

The Tx message header consists of a Command (CMD) byte, followed by three Parameter (PARM) bytes. They are described in the SPI Commands section (7.4) below.

The Rx message header consists of a Rx Data Available field, and a Tx Buffer Available field. The Rx Data Available field indicates the number of data bytes the Device Server has available for the host. They can be received by the RXDATA command. The Tx Buffer Available field indicates how many data bytes the Device Server is able to accept from the host. This data is to be shifted in by the host using the TXDATA (Table 16) command. Both fields are 16 bit values and are stored in little-endian format (LSB first).

Table 14 - Tx Message Header

0

1

2

3

CMD

PARAM1

PARAM2

Table 15 - Rx Message Header

0

1

2

3

Rx Data Available

Tx Buffer Available

7.4SPI Commands

The following commands are available for use in the CMD message header.

Table 16 - SPI Command Description

 

Command

 

 

Name

 

 

Description

 

 

 

 

 

 

 

 

(Hex)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0x00

 

 

NOP

 

 

The NOP command does nothing.

 

 

 

 

 

 

 

It is intended to be used when the host wants to simply retrieve

 

 

 

 

 

 

 

the Rx Message Header without any other operation.

 

 

 

 

 

 

 

 

 

0x04

 

 

BREAK

 

 

The BREAK command will issue a break sequence to the

 

 

 

 

 

 

 

module.

 

 

 

 

 

 

 

It is analogous to the BREAK signal on a common UART.

 

 

 

 

 

 

 

 

 

0x08

 

 

TXINTCLR

 

 

The TXINTCLR command will clear the Tx interrupt.

 

 

 

 

 

 

 

Use this command when the module is issuing a Tx interrupt but

 

 

 

 

 

 

 

there is no more data to send. This is analogous to the reset Tx

 

 

 

 

 

 

 

interrupt command on a common UART.

 

 

 

 

 

 

 

 

 

24

8/11/2009

100-8080-110

Page 23 Page 25
Image 24
Page 23 Page 25
Contents Product Specification Airborne Enterprise Module Databook Quatech Confidential Quatech, Inc. HeadquartersAirborne Enterprise Module Databook Contents Figures Conventions TerminologyFile Format Product Description WLNG-AN-DP500 Module ExampleBlock Diagram WLNG-SE/SP/AN/ET-DP500 Block DiagramModel Numbers Model NumbersPin out and Connectors Module Pin DefinitionGpio CTS2 Uart Digital Uart Ports Ethernet PHY PortUart Pin Definition Serial Peripheral Interface SPI Debug/Console PortGeneral Purpose Input/Output Gpio Connector Definition RF ShieldElectrical & RF Specification Operating Conditions & DC SpecificationSymbol Parameter Min Typ Max Units Absolute Maximum Values1Transmitting @ 11Mb/s 10/100 100% Duty Cycle RF Characteristics 802.11b/g Symbol Parameter Rate Mb/s Min Average Peak Units DBm / mWBand Supported Data Rates Mb/s Band Region Freq Range No. Channels GHzTransmit Power AC Electrical Characteristics Transmitter Performance/RangeRadio Typical Performance Range Typical Outdoor DistanceSPI AC Characteristics SPI InterfaceUART2 Pin Debug Pin Definition DescriptionSPI Protocol SPI Read/Write TimingSPI Commands SPI Command DescriptionCommand Name Description Hex Tx Message HeaderIntena Antenna Antenna SelectionHost Board Mounted Antenna Antenna Type Features Cost Size Availability Performance Host Chassis Mounted AntennaEmbedded Antenna Embedded Antenna OptionsAntenna Location Performance Airborne Enterprise Module Databook Reset Function Symbol ParameterRadio Connector DF12-36DS-0.5VXX Hirose Board Connector DF12-36DP-0.5VXX HiroseRF Connector Mechanical OutlineCertification & Regulatory Approvals FCC StatementFCC RF Exposure Statement Information for Canadian Users IC Notice11.4 FCC/IOC Modular Approval Country StandardRegulatory Test Mode Support Physical & Environmental Approvals Mechanical ApprovalsTest Reference Conditions Change Log Date Section Change Description Author

802.11B/G specifications

Quatech 802.11B/G is a versatile wireless communication solution that has gained recognition for its reliability and performance in various industrial applications. Designed primarily for the industrial automation sector, this product offers robust connectivity and data transmission capabilities over Wi-Fi networks.

One of the standout features of the Quatech 802.11B/G is its compliance with the IEEE 802.11b and 802.11g standards. This ensures compatibility with a wide range of devices, enabling seamless integration into existing networks. The device supports data rates of up to 54 Mbps in the 802.11g mode, which is essential for applications that require quick and efficient data transfer.

In terms of technology, Quatech employs advanced wireless communication protocols that ensure a stable connection and minimize data loss. This is particularly important in industrial settings, where interruptions can result in costly downtime. The device utilizes error correction and encryption techniques to maintain the integrity and security of data being transmitted over the air.

Another important characteristic of the Quatech 802.11B/G is its operational range. The device can maintain a reliable connection across a significant distance, depending on the environmental conditions. This feature is crucial for applications that involve monitoring and control in large facilities, warehouses, or outdoor settings.

Power consumption is another critical aspect of the Quatech 802.11B/G design. The device is engineered for energy efficiency, making it suitable for applications where power resources may be limited. This feature allows for extended operational life in battery-powered devices without sacrificing performance.

The Quatech 802.11B/G is also equipped with multiple interfaces, including serial and Ethernet ports, facilitating easy connectivity with a wide array of devices. This versatility supports integration with various industrial equipment, sensors, and controllers, making the device highly adaptable to different environments.

Furthermore, the Quatech 802.11B/G is designed with durability in mind. It is built to withstand harsh conditions typical of industrial settings, ensuring long-lasting functionality and reducing the need for frequent maintenance or replacements.

In conclusion, the Quatech 802.11B/G offers a reliable and efficient wireless connectivity solution for industrial applications. Its compliance with industry standards, advanced communication protocols, extensive operational range, energy efficiency, and robust design make it a preferred choice for businesses looking to enhance their operational capabilities.
Top Page Image Contents