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4I24M PARALLEL PORT MANUAL

Version 1.0

Copyright 1997 by MESA ELECTRONICS Richmond, CA. Printed in the United States of America.
All rights reserved. This document and the data disclosed herein is not to be reproduced, used,
disclosed in whole or in part to anyone without the written permission of MESA ELECTRONICS.

Mesa Electronics

4175 Lakeside Drive, Suite #100

Richmond, CA 94806-1950

Tel (510) 223-9272 - Fax (510) 223-9585

E-Mail: [email protected]

- Website: www.mesanet.com

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Содержание 4I24M Series

Страница 1: ...ll rights reserved This document and the data disclosed herein is not to be reproduced used disclosed in wholeor inpart to anyonewithout thewritten permissionofMESAELECTRONICS Mesa Electronics 4175 Lakeside Drive Suite 100 Richmond CA 94806 1950 Tel 510 223 9272 Fax 510 223 9585 E Mail tech mesanet com Website www mesanet com ...

Страница 2: ... 5 Default jumper settings 5 Base address selection 7 Aliased address selection 7 I O power options 9 INSTALLATION General 11 I O connector orientation 11 OPERATION Port mapping 12 Connector pinout 13 8255LOOP 16 REFERENCE INFORMATION Specifications 17 Warranty 18 Schematicdiagrams 19 4I24M USER S MANUAL ...

Страница 3: ...cautions should be taken when handling the 4I24M to prevent possible damage A Leavethe 4I24M in itsantistatic bag untilneeded B Allwork should be performed at an antistaticworkstation C Ground equipment into which4I24M willbeinstalled D Ground handling personnel with conductive bracelet through 1 megohm resistor to ground E Avoid wearing synthetic fabrics particularlyNylon ...

Страница 4: ...pinouts with three 50 pin connectors each having 24 I O bits with interleaved grounds 5V power on the I O connectors is fused on the 4I24 All 4I24 models can use the 16 bit stack through type PC 104 bus architecture Four layer circuit card construction is used to minimize radiated EMI and provide optimum ground and power integrity All CMOS design keeps power consumption to a minimum The 4I24 requi...

Страница 5: ... O card is oriented with its bus connectors J1 andJ2 at thebottomedge of the card nearest thepersondoing the configuration DEFAULT JUMPER SETTINGS Factorydefault 4I24M jumpering is as follows FUNCTION JUMPER S SETTING 4I24M power option W5 I O conns pin 49 gnd 4I24M ground option W1 W4 W15 I O even pins gnd 4I24M bit A0 option W2 W3 W14 I O conns pin 1 bit A0 4I24M Base address W6 W7 W8 W9 0200H W...

Страница 6: ...CONFIGURATION DEFAULT JUMPER SETTINGS Page 6 4I24M USER S MANUAL ...

Страница 7: ...e can be conserved by using aliased address s Aliasedaddresses are an artifact caused bythe partial only10 bit address decoding used bymost PC bus cards 4I24M cards actually decode A15 and A14 in addition to A0 through A9 This makes it possible to have up to four 4I24M s located at what appears to other cards in the system to be a single 16 byte block of I O addresses This is done by selecting the...

Страница 8: ...CONFIGURATION BASE AND ALIASED ADDRESS JUMPERS Page 8 4I24M USER S MANUAL ...

Страница 9: ...ion power is routed to pin 1 of the associated connector This is the appropriate setting for most 8 and 16 module I O racks Note that power to W2 W3 and W14 comes from power option jumper W5 which must be in the left hand position in order to supply powerto I O module racks When W2 W3 or W14 are in the right hand position pin 1 is an I O bit This is the appropriate setting for 24 module I O racks ...

Страница 10: ...CONFIGURATION POWER OPTION JUMPERS Page 10 4I24M USER S MANUAL ...

Страница 11: ...es I O CONNECTOR ORIENTATION The 50 pin connectors on the 4I24M have their pin one ends marked with a white square on the circuit card This corresponds with the colored stripe on typical flat cable assemblies If more positive polarization is desired center polarized IDC header connectors should be used These connectors will not fullymate with the pins on the 4I24M if installed backwards A suggeste...

Страница 12: ...wing table and I O connector pinout tables the letters A B and C refer to individual ports on a 8255 chip the standard 8255 port names while the numeric suffix 0 1 or 2 refers to the specificchip The 82C55 ports are addressed asfollows ADDRESS PORT CONNECTOR BASE 0 A0 P3 BASE 1 B0 P3 BASE 2 C0 P3 BASE 3 Control0 BASE 4 A1 P1 BASE 5 B1 P1 BASE 6 C1 P1 BASE 7 Control1 BASE 8 A2 P2 BASE 9 B2 P2 BASE ...

Страница 13: ...2 7 A0 bit 3 9 A0 bit 4 11 A0 bit 5 13 A0 bit 6 15 A0 bit 7 17 B0 bit 0 19 B0 bit 1 21 B0 bit 2 23 B0 bit 3 25 B0 bit 4 27 B0 bit 5 29 B0 bit 6 31 B0 bit 7 33 C0 bit 0 35 C0 bit 1 37 C0 bit 2 39 C0 bit 3 41 C0 bit 4 43 C0 bit 5 45 C0 bit 6 47 C0 bit 7 49 5V fused power or GND W5 option All even pins connected to ground or open W1 option Page 13 4I24M USER S MANUAL ...

Страница 14: ...13 A1 bit 6 15 A1 bit 7 17 B1 bit 0 19 B1 bit 1 21 B1 bit 2 23 B1 bit 3 25 B1 bit 4 27 B1 bit 5 29 B1 bit 6 31 B1 bit 7 33 C1 bit 0 35 C1 bit 1 37 C1 bit 2 39 C1 bit 3 41 C1 bit 4 43 C1 bit 5 45 C1 bit 6 47 C1 bit 7 49 5V fused power or GND W5 option All even pins connected to ground or open W4 option Page 14 4I24M USER S MANUAL ...

Страница 15: ...13 A2 bit 6 15 A2 bit 7 17 B2 bit 0 19 B2 bit 1 21 B2 bit 2 23 B2 bit 3 25 B2 bit 4 27 B2 bit 5 29 B2 bit 6 31 B0 bit 7 33 C2 bit 0 35 C2 bit 1 37 C2 bit 2 39 C2 bit 3 41 C2 bit 4 43 C2 bit 5 45 C2 bit 6 47 C2 bit 7 49 5V fused power or GND W5 option All even pins connected to ground or open W15 option Page 15 4I24M USER S MANUAL ...

Страница 16: ...rect port addresses missing loopback cablesetc andwillcheerfullyreport bit errorsevenifno 4I24M card is present To use 8255LOOP you must have a 50 conductor flat cable with female headers on each end Because the 4I24M has three I O connectors you must run 8255LOOP with 2 different cable arrangements First connect P3 and P1 together with the flat cable Make sure that the cable is properly polarized...

Страница 17: ...leakage current 5 uA Output drive capability 150 pF Output sink current 12 mA I O PORT LOADING Input logic low 3 8 V Input logic high 2 0 5 5 V Output low 4 V 2 5 mA sink Output high 3 0 V 2 5 mA source ENVIRONMENTAL Operating temperature range I version 40 85 o C C version 0 70 o C Relative humidity 0 90 Percent Non condensing Page 17 4I24M USER S MANUAL ...

Страница 18: ...ment willbe made without charge If the failure has been caused by misuse neglect accident or abnormal conditions ofoperation repairs willbebilled at anominalcost THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY FITNESS OR ADEQUACY FOR ANY PARTICULAR PURPOSE OR USE MESA ELECTRONICS SHALL NOT BE LIABLE F...

Страница 19: ...REFERENCE INFORMATION SCHEMATICS Page 19 4I24M USER S MANUAL ...

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