Project Analog - March 2008 - (Page 7)

protocol handler state machine. The protocol handler sends the appropriate data bytes to the Host Controller in UART-formatted serial data. The MCP2150 replaces a wired serial connection with a wireless solution. The MCP2150 allows designers to add IrDA wireless connectivity to their embedded system designs easily and cost effectively. With this device, the host UART interface allows easy connections to PC serial ports. Another product available is the mcP2155, which is best suited for serial port interfaces (such as modems). In all cases, these pointto-point systems connect to devices of “higher intelligence”, such as PCs, PDAs, etc. This minimizes the cost of MCP215X-type devices. The mcP215x can also serve as a primary device in these point-topoint applications. Both devices provide support for the IrDA standard protocol “stack” plus bit encoding and decoding capability. Another product in this family from Microchip is the mcP2140a, which is an IrDA standard protocol 7 · ProjeCt ANALog · mAr 08 fig. 3 bit Encoding. stack controller with a fixed baud communication rate of 9600. Adding IR connectivity to costsensitive, high volume, embedded applications was not really feasible prior to the introduction of the MCP215X and MCP2140A parts. These parts remove the requirement of the system designer needing to implement the complex IrDA stack. Finally, the mcP2120 is an infrared encoder/decoder chip. Sending data using IR light requires some hardware and specialized communication protocols. These protocol and hardware requirements are described, in detail, in the IrDA standard specifications. The encoding/decoding functionality of the MCP2150 is designed to be compatible with the physical layer component of the IrDA standard. This part of the standard is often referred to as “IrPHY”. Additionally, the MCP2150 handles the specialized communication protocol, IrCOMM (9-wire “cooked” service class). A complete list of IrDA standard specifications is available on the IrDA website (www.irda.org). Contents Viewpoint Wireless Communication Using IrDA® Wireless Design Choices Advanced Communication Solutions for Lighting Analog news fig. 4 bit Encoding. Microchip analog page Interface products overview Sample center microchipDIRECT Reference designs/ app notes Technical training • http://www.microchip.com http://www.microchip.com/analog http://www.microchip.com/analog http://www.microchip.com/interface http://www.microchip.com/interface http://sample.microchip.com/Default.aspx?testCookies=true http://www.microchipdirect.com/catalogselection.aspx?returnURL=default.aspx http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1469&filter1=function&redirects=appnotes http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1469&filter1=function&redirects=appnotes http://www.irda.org http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1423

Table of Contents Feed for the Digital Edition of Project Analog - March 2008

Project Analog - March 2008 Contents Viewpoint About Project Analog Sponsor Wireless Communication Using the IrDA® Standard Protocol Wireless Design Choices Advanced Communication Solutions for Lighting Putting 10-GbE PHY Options Into Perspective Ease Into the Flexible CANbus Network Technology and Drivers for Mobile WiMAX Analog News—Analog News from Multiple Sources Enter to Win an iPhone Contact Project Analog Sponsor Treelink Microchip Advanced Parts Selector (MAPS)

Project Analog - March 2008

For optimal viewing of this digital publication, please enable JavaScript and then refresh the page. If you would like to try to load the digital publication without using Flash Player detection, please click here.