W&T Electronics SW 2.11, SW 2.10, SW 2.12, SW 1.12, SW 1.1 User Manual
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W&T
PC cards for ISA bus systems
Subject to error and alteration
Manual
PC Cards for ISA Bus Systems
Type13001, 13401
13601, 13801, 13802
Release 1.2
W&T
W&T
PC cards for ISA bus systems
© 09/2002 by Wiesemann & Theis GmbH
Subject to error and alteration:
Since it is possible that we make mistakes, you mustn’t use any
of our statements without verification. Please, inform us of any
error or misunderstanding you come about, so we can identify
and eliminate it as soon as possible.
Carry out your work on or with W&T products only to the extent that they are described here and after you have completely
read and understood the manual or guide. We are not liable for
unauthorized repairs or tampering. When in doubt, check first
with us or with your dealer.
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Manual
W&T PC cards
Part.-No. Page
2 x RS232, without isolation 13801 21
2 x RS232, 1 kV isolated 13802 23
2 x 20mA, 1 kV isolated 13401 27
2 x RS422/485, 1 kV isolated 13601 31
2 x serial PC card, 1 kV isolated 13001 36
module mainboard
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Function
The W&T PC card 13801 equip your PC with two independent RS232 serial interfaces.
Both serial ports are equipped with type 16C550 FIFO UARTs; this makes them functionally compatible with
standard RS232 interfaces, so that the cards can easily be used with your available software. Following a reset, the
type 16550 elements are in standard UART operating mode, so that there is no need to worry about existing
software. The FIFO mode has to be activated explicitly by the software.
DMA operation of the 16550 UARTs is not supported by the hardware of the W&T PC card 13801.
ESD protection
All interface signal lines of the PC card 13801 are protected against electrostatic discharge of up to 15 kV according
to IEC 801-2, level 4.
Configuring the card
The base address and the required interrupt line can be set by DIP switches at the lower edge of the card.
Port 2 Port 1
20V8
SW1
SW2
UART
Port 2
UART
Port 1
XTAL
PC card 2 x RS232
#13801
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Base addresses
The I/O base addresses of the two ports can be set independently by DIP switches to 03F8H, 02F8H, 03E8H or
02E8H. Serial ports at these base addresses are recognized by almost all modern BIOS versions upon startup of
the PC, and are written to the BIOS RAM of the computer. Some older BIOS versions recognize only two serial ports
at the base addresses for COM1 and COM2. In these rare cases, a separate program is needed to search the
computer for installed serial ports and write the COM3 and COM4 ports to BIOS RAM. The necessary software can
be obtained from W&T on request. Setting both ports to the same base address should be strictly avoided. Please
see the following tables for an explanation of the address DIP switch settings:
Since the address is decoded by means of GALs, customizing of the I/O address is no problem. This option makes
it possible to employ more than 4 serial ports on a computer, if the software permits the use of additional I/O
addresses.
Interrupt settings
The W&T serial PC Cards permit use of the standard interrupts IRQ3 and IRQ4 for the serial ports COM1 and
COM2, and interrupts IRQ5 and IRQ7 for the parallel ports LPT1 and LPT2 if the system has no parallel ports or if
the built-in parallel ports do not operate in interrupt mode. Since it is a long card, the PC Card 16201 also supports
interrupts IRQ9..IRQ12 of the second interrupt controller. Please see the following tables for an explanation of the
IRQ DIP switch setting:
Interrupt setting port 1
Interrupt setting port 2
Port 1 SW 1.9 SW 1.10 SW 1.11
Disabled X X OFF
COM1 03F8H OFF OFF ON
COM2 02F8H ON OFF ON
COM3 03E8H OFF ON ON
COM4 02E8H ON ON ON
Port 2 SW 2.9 SW 2.10 SW 2.11
Disabled X X OFF
COM1 03F8H OFF OFF ON
COM2 02F8H ON OFF ON
COM3 03E8H OFF ON ON
COM4 02E8H ON ON ON
IRQ SW 1.1 SW 1.2 SW 1.3 SW 1.4 SW 1.5 SW 1.6 SW 1.7 SW 1.8
- OFF OFF OFF OFF OFF OFF OFF OFF
3 OFF OFF OFF ON OFF OFF OFF OFF
4 OFF OFF OFF OFF ON OFF OFF OFF
5 OFF OFF OFF OFF OFF ON OFF OFF
7 OFF OFF OFF OFF OFF OFF ON OFF
9 OFF OFF OFF OFF OFF OFF OFF ON
10 OFF OFF ON OFF OFF OFF OFF OFF
11 OFF ON OFF OFF OFF OFF OFF OFF
12 ON OFF OFF OFF OFF OFF OFF OFF
IRQ SW 2.1 SW 2.2 SW 2.3 SW 2.4 SW 2.5 SW 2.6 SW 2.7 SW 2.8
- OFF OFF OFF OFF OFF OFF OFF OFF
3 OFF OFF OFF ON OFF OFF OFF OFF
4 OFF OFF OFF OFF ON OFF OFF OFF
5 OFF OFF OFF OFF OFF ON OFF OFF
7 OFF OFF OFF OFF OFF OFF ON OFF
9 OFF OFF OFF OFF OFF OFF OFF ON
10 OFF OFF ON OFF OFF OFF OFF OFF
11 OFF ON OFF OFF OFF OFF OFF OFF
12 ON OFF OFF OFF OFF OFF OFF OFF
SW 2.12 has
no function
SW 1.12 has
no function
PC card 2 x RS232
#13801
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Connectors and pin assignment
The two ports of the W&T RS232 PC card 13801 use DB9 male connectors with identical pin configuration. The
connector pin assignments are shown in the table below:
Technical data
base adresses: 03F8H, 02F8H, 03E8H, 02E8H
interrupts: IRQ3, IRQ4, IRQ5, IRQ7
IRQ9, IRQ10, IRQ11, IRQ12
Baudrate: 50..115200 Baud
data format: any data format
insulation: no insulation
ESD protection: up to 15 kV according to IEC 801-2, level 4
supply current: approx. 200mA @5V, 30mA @12V, 30mA @-12V
RS232 interface: DB 9 male connector
dimensions: 165 x 106 mm
weight: approx. 150 g
packing list: 1 x RS232 PC card, type 13801
function
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI
pin#
1
2
3
4
5
6
7
8
9
pin assignment
RS232 interface
PC card 2 x RS232
#13801
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PC card 2 x RS232
#13802
Function
The W&T PC card 13802 equip your PC with two independent RS232 serial interfaces with an insulation of up to
1000 Volts.
Both serial ports are equipped with type 16C550 FIFO UARTs; this makes them functionally compatible with
standard RS232 interfaces, so that the cards can easily be used with your available software. Following a reset, the
type 16550 elements are in standard UART operating mode, so that there is no need to worry about existing
software. The FIFO mode has to be activated explicitly by the software.
DMA operation of the 16550 UARTs is not supported by the hardware of the W&T port cards.
Insulation and ESD protection
The two ports of the W&T serial PC card 13802 are insulated both from each other and from the PC with a dielectric
strength of 1000 volts. The signals are isolated by means of high-speed opto-couplers; energy is supplied to the
driver and receiver elements by means of an isolated DC/DC converter. Please note that the shielding of the port
connectors is directly connected to the case of the PC by the metallic back panel.
All interface signal lines of the PC card 13802 are protected against electrostatic discharge of up to 15 kV according
to IEC 801-2, level 4.
Configuring the card
The base address and the required interrupt line can be set by DIP switches at the lower edge of the card.
Port 2 Port 1
20V8
SW1
SW2
UART
Port 2
UART
Port 1
XTAL
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