This is the revision B version of the DB9RJ11 module.

DB9RJ11 Module (Revision B)

Table of Contents

1. Introduction

The DB9RJ11 module intefaces an RJ11 connector to a DB9 connector. It is meant to used with a WireHost Module.

2. Hardware

The hardware consists of a circuit schematic and a printed circuit board.

2.1 Circuit Schematic

The schematic for the DB9RJ11 module is shown below:

DB9RJ11 Schematic

This board is designed to eventually support the Parallax product line. Besides the required three lines T×D, R×D, and Ground, the DTR signal is on the line as well. The Parallax products use the DTR line to reset the the various Basic Stamp processors. RTS is fed back to CTS just in case the host processor has hardware flow control turned on.

The parts list kept in a separate file -- db9rj11.ptl.

2.2 Printed Circuit Board

The printed circuit board files are listed below:

db9rj11_back.png
The solder side layer.
db9rj11_front.png
The component side layer.
db9rj11_artwork.png
The artwork layer.
db9rj11.gbl
The RS-274X "Gerber" back (solder side) layer.
db9rj11.gtl
The RS-274X "Gerber" top (component side) layer.
db9rj11.gal
The RS-274X "Gerber" artwork layer.
db9rj11.gml
The RS-274X "Gerber" mask layer.
db9rj11.drl
The "Excellon" NC drill file.
db9rj11.tol
The "Excellon" tool rack file.

3. Issues

The following fabrication issues came up:


Copyright © 2005-2007 by Wayne C. Gramlich. All rights reserved.