MCP2140A-I/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

MCP2140A-I/SO

IrDA® Standard Protocol Stack Controller With Fixed 9600 Baud Communication Rate

Microchip Technology 

MCP2140A

APPENDIX D: DB-9 PIN

INFORMATION

Table D-1 shows the DB-9 pin information and the

direction of the MCP2140A signals. The MCP2140A is

designed for use in Data Communications Equipment

(DCE) applications.

TABLE D-1: DB-9 SIGNAL INFORMATION

DB-9

Pin No.

Signal

Direction

Comment

1 CD

HC →

MCP2140A

2 RX

MCP2140A →

HC

3 TX

HC →

MCP2140A

4 DTR

HC →

MCP2140A

5 GND

—

6 DSR

MCP2140A →

HC

7 RTS

HC →

MCP2140A

8 CTS

MCP2140A →

HC

9 RI

HC →

MCP2140A

Legend: HC = Host Controller

Carrier Detect

Received Data

Transmit Data

Data Terminal

Ready

Ground

Data Set

Ready

Request to

Send

Clear to Send

Ring Indicator

APPENDIX E:

KNOW PRIMARY

DEVICE

COMPATIBILITY

ISSUES

• None

DS22050A-page 56

© 2007 Microchip Technology Inc.

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