MCP2120 datasheet(22/64 Pages) MICROCHIP

22 / 64 page

MCP2120/MCP2150 USER’S GUIDE

DS51246A-page 18

 2001 Microchip Technology Inc.

2.4.1.

Configuration 1

This is the typical mode that will be used for the two MCP2120 Developer’s

Board. In this configuration, the MCP2120 board receives data as a single

ASCII byte. This byte is then translated to the IR data format, and transmitted

out of the selected optical transceiver logic.

The host interface can be from either the DB-9 (PC or other UART) or the

Header.

A PC running a terminal emulation program, such as Hyperterminal,

connected to the serial port will create this ASCII data stream. The PC can

then be connected to the Developer’s Board DB-9 connector.

2.4.2.

Configuration 2

This is used to view the effects of the IrDA standard stack protocol on the data

stream. This can be used to better understand the construction of the IrDA

standard data packet, or as a diagnostic tool.

The host interface can be from either the DB-9 (PC or other UART) or the

Header.

A PC running a terminal emulation program, such as Hyperterminal,

connected to the IR port as a virtual serial port will create this ASCII data

stream. The PC can then be connected to the MCP2120 Developer’s Board

DB-9 connector.

2.4.3.

Configuration 3

This is the configuration when using one MCP2120 Developer’s Board and

one MCP2150 Developer’s Board.

The MCP2150 Developer’s Board can have the host interface be from either

the DB-9 (PC or other UART) or the Header.

The MCP2120 Developer’s Board would interface to a PC running a terminal

emulation program, such as Hyperterminal, that connects the IR port to a

virtual serial port.

Developer’s Board #1

Developer’s Board #2

MCP2120 Dev Board (ASCII)

↔ MCP2120 Dev Board (ASCII)

Developer’s Board #1

Developer’s Board #2

MCP2120 Dev Board (IR Driver)

→ MCP2120 Dev Board (IR Driver)

Developer’s Board #1

Developer’s Board #2

MCP2150 Dev Board (ASCII)

↔ MCP2120 Dev Board (IR Driver)

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