Introduction; Features; Figure 1: Comsync104 Board Layout Preceeding Revision C - Connect Tech ComSync/104 User Manual

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
Pin 26
Channel B
Pin 1
DIP Switch SW1
I/O address
I/O mode
Line termination
Zilog 85230 ESCC
Channel B
P5
Made in Canada
(c) 2002 Connect Tech Inc.
SW1
ON
IO Addr
IO Mode
A
TE
B
P1
P2
P3
PC/104 bus connector
Pin 1
Channel A
ComSync/104
65859 Rev.
Pin 26
Channel A
CTIB-00020
P4
B
A
C
D