Browse Prior Art Database

Circuit Card to Provide Eight Serial Ports on the STD Bus With Fiber- Optic Interface

IP.com Disclosure Number: IPCOM000034575D
Original Publication Date: 1989-Mar-01
Included in the Prior Art Database: 2005-Jan-27

Publishing Venue

IBM

Related People

Authors:
Mahlbacher, JC Stanley, RC [+details]

Abstract

A technique is described whereby a circuit card provides eight serial channels on a single STD bus. It provides two 36-pin connectors so as to allow for the configuring of any desired electrical interface, including fiber-optic communications interfaces. The concept provides a means of enabling up to 50 circuit boards to communicate with a single micro-controller, such as the Intel 8751, and provides an electrical interface and a channel density for STD bus configurations not currently available commercially. The STD bus card is 4.5 x 6.5 inches and usually supports a 16- or 20-bit address bus and an eight-bit data bus. Additional signals provide processor status and control lines.