Connect Tech ComSync/104 Manual de usuario

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ComSync/104

PC/104 serial communications

User Manual

Connect Tech Inc

42 Arrow Road

Guelph, Ontario

N1K 1S6

Tel: 519-836-1291

Toll:800-426-8979

Fax: 519-836-4878

Email: sa[email protected]

URL: http://www.connecttech.com

CTIM-00012, Revision 0.04, June 2007

Limited Lifetime Warranty

Connect Tech Inc. provides a Lifetime Warranty for all Connect Tech Inc. products. Should this

product, in Connect Tech Inc.'s opinion, fail to be in good working order during the warranty

period, Connect Tech Inc. will, at its option, repair or replace this product at no charge, provided

that the product has not been subjected to abuse, misuse, accident, disaster or non Connect Tech

Inc. authorized modification or repair.

You may obtain warranty service by delivering this product to an authorized Connect Tech Inc.

business partner or to Connect Tech Inc. along with proof of purchase. Product returned to

Connect Tech Inc. must be pre-authorized by Connect Tech Inc. with an RMA (Return Material

Authorization) number marked on the outside of the package and sent prepaid, insured and

packaged for safe shipment. Connect Tech Inc. will return this product by prepaid ground

shipment service.

The Connect Tech Inc. Lifetime Warranty is defined as the serviceable life of the product. This is

defined as the period during which all components are available. Should the product prove to be

irreparable, Connect Tech Inc. reserves the right to substitute an equivalent product if available

or to retract Life Time Warranty if no replacement is available.

The above warranty is the only warranty authorized by Connect Tech Inc. Under no

circumstances will Connect Tech Inc. be liable in any way for any damages, including any lost

profits, lost savings or other incidental or consequential damages arising out of the use of, or

inability to use, such product.

The information contained in this document is subject to change without notice. Connect Tech

Inc. shall not be liable for errors contained herein or for incidental consequential damages in

connection with the furnishing, performance, or use of this material. This document contains

proprietary information that is protected by copyright. All rights are reserved. No part of this

document may be photocopied, reproduced, or translated to another language without the prior

written consent of Connect Tech, Inc.

Trademark Acknowledgment

Connect Tech, Inc. acknowledges all trademarks, registered trademarks and/or copyrights

referred to in this document as the property of their respective owners.

Not listing all possible trademarks or copyright acknowledgments does not constitute a lack of

acknowledgment to the rightful owners of the trademarks and copyrights mentioned in this

document.

Customer Support Overview

If you experience difficulties after reading the manual and/or using the product, contact the

Connect Tech reseller from which you purchased the product. In most cases the reseller can help

you with product installation and difficulties.

In the event that the reseller is unable to resolve your problem, our highly qualified support staff

can assist you. Our support section is available 24 hours a day, seven days a week on our

website at:

www.connecttech.com/sub/support/support.asp. See the contact information section below for

more information on how to contact us directly. Our technical support is always free.

Contact Information

We offer three ways for you to contact us:

Telephone/Facsimile

Technical Support representatives are ready to answer your call Monday through Friday, from

8:30 a.m. to 5:00 p.m. Eastern Standard Time. Our numbers for calls are:

Telephone: 800-426-8979 (North America only)

Telephone: 519-836-1291 (Live assistance available 8:30 a.m. to 5:00 p.m. EST, Monday to

Friday)

Facsimile: 519-836-4878 (on-line 24 hours)

Email/Internet

You may contact us through the Internet. Our email and URL addresses are:

[email protected]

www.connecttech.com

Mail/Courier

You may contact us by letter and our mailing address for correspondence is:

Connect Tech Inc.

Technical Support

42 Arrow Road

Guelph, Ontario

Canada N1K 1S6

Note:

Please go to the Download Zone or the Knowledge Database in the

Support Center on the Connect Tech website for product manuals,

installation guides, device driver software and technical tips.

Submit your technical support questions to our customer support

engineers via the Support Center on the Connect Tech website.

Table of Contents

Limited Lifetime Warranty................................................................................................. 2

Copyright Notice................................................................................................................. 2

Trademark Acknowledgment.............................................................................................. 2

Customer Support Overview............................................................................................... 3

Contact Information................................................................................................................ 3

Table of Contents................................................................................................................ 4

List of Figures..................................................................................................................... 4

List of Tables ...................................................................................................................... 4

Introduction......................................................................................................................... 5

Features................................................................................................................................... 5

Hardware Installation.......................................................................................................... 6

Innovative I/O Structure.......................................................................................................... 6

DMA Support.......................................................................................................................... 8

85230 Register Bit Cloning..................................................................................................... 9

Security Feature ...................................................................................................................... 9

Software Selectable IRQs ..................................................................................................... 10

Shared IRQ (Revision C and proceeding)............................................................................. 10

IRQ Pull-Down (Revision C and proceeding) ...................................................................... 10

Software Selectable Line Interface Modes ........................................................................... 11

Line Termination................................................................................................................... 12

RS485 Modes (Revision C and proceeding)......................................................................... 12

I/O Connect Pin Assignments............................................................................................... 13

I/O Address and I/O Mode Setup................................................................................................... 14

List of Figures

Figure 1: ComSync104 board layout preceeding Revision C......................................................................... 5

Figure 2: ComSync104 Revision C/D board layout........................................................................................ 6

Figure 3: Line Termination........................................................................................................................... 12

List of Tables

Table 1: I/O Map............................................................................................................................................ 7

Table 2: DMA Support................................................................................................................................... 8

Table 3: Register Bit Cloning......................................................................................................................... 9

Table 4: IRQs ............................................................................................................................................... 10

Table 5: Line Interface Mode Settings ......................................................................................................... 11

Table 6: Control Bits.................................................................................................................................... 12

Table 7: Pin Assignments............................................................................................................................. 13

Table 8: I/O Address Selection..................................................................................................................... 14

Introduction

The Connect Tech Inc. ComSync/104 is a 2 channel Synchronous/Asynchronous Serial Adapter

card for PC/104 Bus systems.

The card utilizes the features and functionality of the Zilog 85230 ESCC , along with an

innovative I/O structure, to provide the user with full featured SYNC/ASYNC communications.

Features

●Zilog 85230 clocked at 19.6608 MHz, allowing bit rates up to 4.9 Mbps

●Innovative I/O structure featuring basic and enhanced I/O

●Choice of seven software selectable electrical interfaces: RS-232, RS-422, RS-449, EIA-

530, EIA-530/A, V.35 and X.21

●Support four software programmable DMA (Direct Memory Access) channels with TC

(Terminal Count) interrupt

●85230 Register Bit Cloning

●Available security features

●Software selectable IRQ on PC/104 bus, and Master Interrupt Enable

●Software selectable Shared IRQ and Pull-Down modes (Rev C and later)

●RS485 Mode support (Rev C and later)

●Available Industrial Temperature operating range of -40 to 85 degrees Celsius

(-40 to 185 degrees F) at a reduced clock rate (14.7456 MHz)

Figure 1: ComSync/104 board layout preceeding Revision C

IO Addr

IO Mode

ChannelB

Made in Canada

ChannelA

ComSync/104

65859 Rev.

CTIB-00020

SW1

Pin 1

Pin 26

DIP Switch SW1

I/O address

I/O mode

Line termination

Zilog 85230 ESCC

Channel B

Channel A

Pin 26

Pin 1

PC/104 bus connector

Figure 2: ComSync104 Revision C/D board layout

Hardware Installation

Be sure to configure all dip-switch settings prior to the physical installation of your

ComSync/104 adapter into your PC/104 stack.

Innovative I/O Structure

The innovative I/O structure supports either a Basic mode or Enhanced mode of I/O interfacing.

The Basic mode decodes 16 (eight prior to Revision C) consecutive I/O addresses of which 10

are used, which supports the ESCC along with Control and Status functions.

The Enhanced mode is 64 consecutive I/O addresses which supports the Basic mode plus an

additional I/O region which allows the ESCC registers to be read/written in one PC/104 Bus

cycle. The following table shows the I/O Map.

IO Addr

IO Mode

ChannelB

ChannelA

ComSync/104

65859 Rev.C

CTIB-00020

SW1

Pin 1

Pin 26

DIP Switch SW1

I/O address

I/O mode

Line termination

Zilog 85230 ESCC

Channel B

Channel A

Pin 26

Pin 1

PC/104 bus connector

Table 1: I/O Map

I/O Address

(Offset) Function

Name Bit Definitions

(Write) Bit Definitions

(Read)

0 Channel(A)

Data [1] 0 » 7 85230 Data register 0 » 7 85230 Data register

1 Channel(A)

Control [1] 0 » 7 85230 Control register 0 » 7 85230 Control register

2 Channel(B)

Data [1] 0 » 7 85230 Data register 0 » 7 85230 Data register

3 Channel(B)

Control [1] 0 » 7 85230 Control register 0 » 7 85230 Control register

4 Status and

Control 0

3 » 5

DTR(A) [2]

DTR(B)

Security Feature Enable

IRQ Selection

DMA Enable (B)

DMA Enable (A)

DSR(A)

DSR(B)

Security Feature Enable

85230 INT pin

I/O mode

TC Interrupt[3]

DMA Enable (B)

DMA Enable (A)

5 TC &

Security any Clear TC Interrupt [3] 0 » 7 Security Function

6 85230

Control any Resets 85230 and

7 Misc

Control 0 » 2

3 » 5

Line Interface Mode (A)

Line Interface Mode (B)

Master Interrupt Enable

WAIT/TC Enable [4]

0 » 2

3 » 5

Line Interface Mode (A)

Line Interface Mode (B)

Master Interrupt Enable

WAIT/TC Enable [4]

8 [8] IRQ

Control 0

3 » 5

Shared IRQ Enable

IRQ Pull-Down Enable

Reserved

IRQ Selection [9]

Master Interrupt Enable [10]

Software IRQ [11]

3 » 5

Shared IRQ Enable

IRQ Pull-Down Enable

Reserved

IRQ Selection

Master Interrupt Enable

Software IRQ

9 [8] RS485

Control 0 » 3

4 » 7 RX and TX RS485 Modes [7]

Reserved 0 » 3

4 » 7 RX and TX RS485 Modes [7]

Reserved

0x20 » 0x2F [6] Channel(A)

Registers 0 » 7 Register Write data 0 » 7 Register Read data

0x30 » 0x3F [6] Channel(B)

Registers 0 » 7 Register Write data 0 » 7 Register Read data

Notes

[1] See Zilog ESCC user manual for description of functionality.

[2] DTR control from this I/O point is only valid when the /DTR//REQ pin of the ESCC is

programmed for use as a DMA request.

[3] TC is the Terminal Count signal from the PC/104 Bus, which occurs at the end of a

DMA transfer.

[4] When the /W//REQ pin of the ESCC is programmed as a WAIT function, this bit

enables WAIT states to occur on the PC/104 Bus. When both channels are programmed

to operate in DMA mode, this bit becomes a TC Interrupt Enable.

[5] 85230 Registers bits which are cloned.

[6] Only when Enhanced Addressing mode is enabled.

[7] Refer to description below for bit meanings.

[8] I/O Offsets [8] and [9] are only available on Revision C (or later) cards.

[9] IRQ Selection can be set at I/O Offset [8] and [4] (same bit numbers).

[10] Master Interrupt Enable can be set at I/O Offset [8] and [7] (same bit number).

[11] Software IRQ will cause the card to generate an IRQ and is mostly used for testing.

DMA Support

To allow fast data reception and transmission, the ComSync/104 supports four DMA channels;

each one is assigned to one of the ESCC DMA Request pins. Each channel of the ESCC has 2

request pins which can be programmed as either a combined receive/transmit request or as

separate receive and transmit requests (see the ESCC Users Manual for much more detail).

The I/O of this card will support a DMA Enable for each Channel of the ESCC. The DMA

support is organized as follows:

Table 2: DMA Support

PC/104

DMA signals 85230 DMA

85230

Chan

nel 85230

Bit Function

DRQ0 /

DACK0# /DTR//REQA

A WR14.2 = 1 I/O(4).7 Transmit DMA

DRQ1 /

DACK1# /W//REQA A WR1.6 = 1 I/O(4).7 Receive or Transmit DMA

DRQ2 /

DACK2# /DTR//REQB

B WR14.2 = 1 I/O(4).6 Transmit DMA

DRQ3 /

DACK3# /W//REQB B WR1.6 = 1 I/O(4).6 Receive or Transmit DMA

Note:If a Floppy drive is installed in the system then DRQ2/DACK2#

are used and should not be used for the ComSync/104.

85230 Register Bit Cloning

Various features of the ComSync/104 board are set up when certain register bits of the ESCC are

programmed. This feature is extremely convenient and reduces the redundancy of setup

functions. When certain bits are written to ESCC registers, the card keeps a copy of those bits to

perform the setup of card features. These Register bits are cloned for each channel of the ESCC,

to perform the following functions:

Table 3: Register Bit Cloning

ESCC

Cloned Function on ESCC Function on Card

WR11.2 TRxC pin as an Input or Output

(Reset state is an Input) Controls the direction of the TRxC(±) pins of the

Line Interface to match the setting of the ESCC.

WR4.[5,4,3,2] Various SYNC modes which

require the SYNC pin to be an

Input (Reset to Async mode).

Controls the direction of the SYNC(±) pins of the

Line Interface to match the setting of the ESCC.

(SYNC is an input when External SYNC is

selected or Async mode is selected. All other

times SYNC is an Output).

WR1.6 Changes functionality of the

/W//REQ pin (Reset state is the

WAIT function).

When programmed to the WAIT function, and

the WAIT Enable [I/O(7).7] bit is ON, the card

will generate wait states onto the PC/104 Bus

during Data reads or writes (using the IOCHRDY

signal).

USE EXTREME CAUTION WHEN USING

THIS MODE, INFINITE WAIT PERIODS

CAN OCCUR!

When programmed for the REQ function the

ESCC pin becomes the DMA signal DRQn

WR14.2 Changes the functionality of the

/DTR//REQ pin (Reset state is

the DTR function).

When programmed to the DTR function, the

DTR(±) signals on the line interface are supplied

by the ESCC (WR5.7) and the DMA signal

DRQn is disabled.

When programmed to the REQ function, the

ESCC pin becomes the DMA signal DRQn, and

the DTR(±) line interface signals are provided by

the I/O(4).0,1 bits.

Security Feature

Due to the specialized nature of this product, users may wish to “Secure” their software to the

use of the CTI hardware. This is similar to the use of a “Software Security Dongle” (sometimes

attached to a Parallel port of a PC). The function is implemented by CTI engineers (with

customer input) and can be customer specific. It is programmed into the PLD logic component

on the card during manufacturing.

The security feature is enabled by setting I/O (4).2, setting the required security bits (this is

customer specific), and then reading back the result from I/O (5). When finished with the security

feature, the bit at I/O (4).2 is cleared to return to normal operation.

When the security feature is enabled the following functions are inhibited:

•Master Interrupt Enable cannot be changed.

•WAIT states are disabled (IOCHRDY will not activate on PC/104 bus cycles).

•WAIT Enable cannot be changed.

•Line Interface Mode cannot be changed for either channel.

Note: The function which can be programmed is limited in scope and

is NOT as fully featured as one would find on a typical “Security

Dongle”, but it is usually sufficiently cryptic to slow down pirates.

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