ComSync/PCI-104 Gen 3
Users Guide
Connect Tech Inc. Tel: 519-836-1291
42 Arrow Road Toll: 800-426-8979 (North America only)
Guelph, Ontario Fax: 519-836-4878
N1K 1S6 Email: sales@connecttech.com
www.connecttech.com support@connecttech.com
CTIM-00122 Revision 0.01 2017-01-26
ComSync/PCI-104 Gen 3
Users Guide
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Document: CTIM-00122
Revision: 0.01
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Table of Contents
Table of Contents ................................................................................................................................... 2
Preface ................................................................................................................................................... 3
Customer Support Overview ........................................................................................................................... 3
Contact Information ........................................................................................................................................ 3
Limited Lifetime Warranty ............................................................................................................................. 4
Copyright Notice ............................................................................................................................................. 4
Trademark Acknowledgment .......................................................................................................................... 4
ESD Warning .................................................................................................................................................. 5
Revision History .................................................................................................................................... 5
Introduction........................................................................................................................................... 6
Product Features and Specifications ................................................................................................................ 6
Part Numbers / Ordering Information ............................................................................................................. 6
Product Overview .................................................................................................................................. 7
Block Diagram ................................................................................................................................................ 7
Connector & Jumper Summary & Locations .................................................................................................. 7
Serial Data & Clocking Connectors........................................................................................................ 8
Signal Description ........................................................................................................................................... 9
Configuration Jumpers & Switches ........................................................................................................ 9
PCI-104 Slot Selection .................................................................................................................................... 9
RS485, ½ Duplex Bias/Termination Selection .............................................................................................. 10
IO Cable .............................................................................................................................................. 10
ESCC DMA Data Transfers ................................................................................................................. 11
Detailed Technical Manual .................................................................................................................. 11
ComSync/PCI-104 Gen 3
Users Guide
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Preface
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, 7 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
Mail/Courier
Connect Tech Inc.
Technical Support
42 Arrow Road
Guelph, Ontario
Canada N1K 1S6
Email/Internet
sales@connecttech.com
support@connecttech.com
www.connecttech.com
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.
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:
Toll Free: 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)
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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 Lifetime 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.
Copyright Notice
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.
Copyright 2014 by 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.
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Electronic components and circuits are sensitive to
ElectroStatic Discharge (ESD). When handling any circuit
board assemblies including Connect Tech COM Express
carrier assemblies, it is recommended that ESD safety
precautions be observed. ESD safe best practices include,
but are not limited to:
Leaving circuit boards in their antistatic packaging
until they are ready to be installed.
Using a grounded wrist strap when handling circuit
boards, at a minimum you should touch a grounded
metal object to dissipate any static charge that may be
present on you.
Only handling circuit boards in ESD safe areas, which
may include ESD floor and table mats, wrist strap
stations and ESD safe lab coats.
Avoiding handling circuit boards in carpeted areas.
Try to handle the board by the edges, avoiding contact
with components.
Revision
Date
Changes
0.00
2014-08-28
Preliminary Release
0.01
2017-01-26
Minor formatting changes
ESD Warning
Revision History
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Specifications
PCI-104 Board footprint
PCI-104 V1.1 and PC/104 V2.6 Compliant
Zilog ESCC (8523L)
Dual channel Synchronous Serial controller
FPGA
PCI-104 Bus interface with DMA support
Bit Rate
Up to 2.6 Mbps, depending on line interface, and serial mode settings
Data FIFO’s
512 bytes per port / direction
Line Interfaces
RS232, RS422, RS485
Industrial Temp operation
-40C to +85C
Part Number
CPG004
Standard Product
CPG005
CPG004 with Conformal coating
Introduction
The ComSync/PCI-104 Gen 3 is a 2-Port Synchronous and Asynchronous Serial board for PCI-104 computer
systems. Although it includes Asynchronous capability, its main focus is for Synchronous communications
protocols, like HDLC, MonoSync or BiSync.
The Serial controller device is an industry standard Zilog ESCC (8523L) which has been well known and
supported, for quite a long time. The ESCC’s main weak point is its small data FIFO’s, which limits maximum
data bit rates to 100 to 200 Kbps in most implementations.
This “Gen 3” board teams the ESCC with an FPGA which allows Serial Data to be transferred between the
ESCC and the system memory very quickly, thus realizing bit rates up to 2.6 Mbps.
Product Features and Specifications
Part Numbers / Ordering Information
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Designator
Description
P1
JTAG FPGA programming connector (not for user connection)
P2
Port-1 Serial Data and Clocking signals
P3
Port-2 Serial Data and Clocking signals
P4
PCI-104 Bus Stack connector
SW1
PCI-104 Bus “Slot” selector
J1/J2
Port-1 RS485 Bias/Termination
J3/J4
Port-2 RS485 Bias/Termination
J5
Alternate PCI-104 Bus “Slot” selector (not normally populated)
Product Overview
Block Diagram
Connector & Jumper Summary & Locations
ComSync/PCI-104 Gen 3
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26 pin
Header
Pin#
RS422
(full duplex)
Signal
RS485
(½ duplex)
Signal
RS232
Signal
Direction
DB25
Connector
Pin#
[1]
1
GND
GND
GND
--- 1 2
TX+
TXRX+
TXD
I/O [4]
2
3
RX+
---
[2]
RXD
Input
3
4
RTS+
---
[2]
RTS
Output
4
5
CTS+
---
[2]
CTS
Input
5
6
---
[2]
---
[2]
DSR
Input
6
7
GND
GND
GND
---
7 8 ---
[2]
---
[2]
DCD
Input
8
9
RTxC+
RTxC+
---
[2]
Input
9
10
TRxC+
TRxC+
---
[2]
I/O [3]
10
11
---
[2]
---
[2]
TRxC
Input
11
12
N/C
N/C
N/C
---
12
13
N/C
N/C
N/C
---
13
14
N/C
N/C
N/C
---
14
15
TX-
TXRX-
---
[2]
I/O [4]
15
16
RX-
---
[2]
---
[2]
Input
16
17
RTS-
---
[2]
---
[2]
Output
17
18
CTS-
---
[2]
---
[2]
Input
18
19
N/C
N/C
N/C
---
19
20
---
[2]
---
[2]
DTR
Output
20
21
N/C
N/C
RTxC
Input
21
22
RTxC-
RTxC-
---
[2]
Input
22
23
TRxC-
TRxC-
---
[2]
I/O [3]
23
24
SYNC [5]
SYNC [5]
SYNC [5]
Input
24
25
N/C
N/C
N/C
---
25
26
N/C
N/C
N/C
---
---
Serial Data & Clocking Connectors
Connectors P2 (for Port-1) and P3 (for Port-2) are used to connect between the ComSync/PCI-104 Gen 3 board
and the peripheral device. The following drawings show the orientation and pin assignments for these
connectors.
13 1
26 14
Pin 1
Notes:
[1] A cable can be provided to adapt the 26 pin header to a 25 pin D connector.
[2] Do NOT connect (pin is carrying an image of another signal).
[3] Input or Output in RS422 or RS485 modes, output only in RS232 mode.
[4] Input or Output in RS485 mode, otherwise an Output.
[5] Always RS232 level signal in all modes.
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Signal Name
Signal Description
Mode Used
GND
Signal Ground
All
TXD
Transmit Data
RS232
TX+
Transmit Data (+)
RS422
TX-
Transmit Data (-)
RS422
TXRX+
Transmit / Receive Data (+)
RS485
TXRX-
Transmit / Receive Data (-)
RS485
TRxC
Transmitter Data Clock
RS232
TRxC+
Transmitter Data Clock (+)
RS422, 485
TRxC-
Transmitter Data Clock (-)
RS422, 485
RTxC
Receiver Data Clock
RS232
RTxC+
Receiver Data Clock (+)
RS422, 485
RTxC-
Receiver Data Clock (-)
RS422, 485
DTR
Data Terminal Ready
RS232
DSR
Data Set Ready
RS232, 485
RTS
Request To Send
RS232,
RTS+
Request To Send (+)
RS422
RTS-
Request To Send (-)
RS422
CTS
Clear To Send
RS232
CTS+
Clear To Send (+)
RS422
CTS-
Clear To Send (-)
RS422
SYNC
Receiver Sync
All
N/C
Pin Not Connected
---
Switch
Position
Slot
Number
0,4,8,C
#1
1,5,9,D
#2
2,6,A,E
#3
3,7,B,F
#4
Signal Description
Configuration Jumpers & Switches
PCI-104 Slot Selection
A rotary switch enables selection of the PCI-104 bus slot, as defined in the PCI-104 or PC/104-Plus
Specifications. Positions 0 through 3 select the 4 possible slots. The other positions just mirror the first 4
selections.
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RS485, ½ Duplex Bias/Termination Selection
Each port, has a pair of jumpers which enable bias and termination resistors to be applied to the differential
TX/RX± signal pair. J1/J2 for Port-1 and J3/J4 for Port-2. High resistance biasing is always applied when the
jumpers are not installed. The circuit is implemented as follows. These jumpers should be removed for RS422
(full duplex) and RS232 modes of operation. The RX± and CTS± signals have the high resistance (100K) bias
applied permanently.
The jumpers are usually applied in pairs, but they can be used individually for special situations.
Port-1 Port-2
IO Cable
Cable assembly CBG001 (CTIC-00055) can be used with the ComSync PCI-104 Gen 3 product. It provides a
DB-25 style of connector. The pin assignments for this cable are shown in the table above.
ComSync/PCI-104 Gen 3
Users Guide
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ESCC DMA Data Transfers
The Zilog ESCC device has the ability to “signal” the need for data transfers to/from its internal data FIFO’s,
which operates independently from its interrupting mechanism. This ability has been exploited in this product
with the inclusion of an FPGA. Internal to the FPGA is 2 independent DMA controllers, each with dual
memory buffer access capability. Also with the FPGA is a total of 2048 bytes of FIFO (512 bytes per port /
direction).
Once initialized by software, the data transfers between the computer memory and the ESCC are completely
autonomous, with the DMA controllers generating interrupts when transfer buffers are completed, or errors
occur.
Detailed Technical Manual
A companion detailed technical manual for this product is available upon execution of an Non-Disclosure
Agreement (NDA). This manual contains technical details that software developers would need to incorporate
this product in their system.
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